test: adjusted BadCommandUsage javadoc

Paper plugin should be able to register Brigadier commands that redirects to the root command node (similar to vanilla /execute run)

.gitignore

@@ -1,3 +1,5 @@
 /.idea
 /*/target
-dependency-reduced-pom.xml
+dependency-reduced-pom.xml
+
+*.iml

Readme.md

@@ -18,8 +18,9 @@ that are detailed in their respective Readme file (if any).
 - `pandalib-players` A library to handle classes representing online or offline players;
 - `pandalib-players-permissible` An extension of `pandalib-players` with support for the permission system `pandalib-permissions`;
 - `pandalib-netapi` A poorly designed, but working TCP network library;
+- `pandalib-config` Utility and helper classes to handle configuration related files and folders;
 - `pandalib-commands` An abstract command manager working on top of [Brigadier](https://github.com/Mojang/brigadier);
-- `pandalib-cli` Utility and helper classes for a standalone CLI Java application.
+- `pandalib-cli` Utility and helper classes for a standalone CLI Java application;
 - `pandalib-core` A catch-all module for some helper classes that didn't have their own module yet;
 
 ### Use in your projects

pandalib-bungee-chat/.gitignore

@@ -0,0 +1 @@
+/target/

pandalib-bungee-chat/pom.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>pandalib-parent</artifactId>
+        <groupId>fr.pandacube.lib</groupId>
+        <version>1.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>pandalib-bungee-chat</artifactId>
+    <packaging>jar</packaging>
+
+    <repositories>
+        <repository>
+            <id>bungeecord-repo</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-util</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-chat</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>net.md-5</groupId>
+            <artifactId>bungeecord-chat</artifactId>
+            <version>${bungeecord.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>net.kyori</groupId>
+            <artifactId>adventure-platform-bungeecord</artifactId>
+            <version>4.3.0</version>
+        </dependency>
+    </dependencies>
+
+</project>

pandalib-bungee-chat/src/main/java/fr/pandacube/lib/bungee/chat/ChatBungee.java

@@ -0,0 +1,77 @@
+package fr.pandacube.lib.bungee.chat;
+
+import fr.pandacube.lib.chat.Chat;
+import fr.pandacube.lib.chat.Chat.FormatableChat;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.serializer.bungeecord.BungeeComponentSerializer;
+import net.md_5.bungee.api.chat.BaseComponent;
+
+/**
+ * Utility class to ease conversion between our Adventure backed Chat API and BungeeCord chat API.
+ */
+public class ChatBungee {
+
+
+
+    /**
+     * Creates a {@link FormatableChat} from the provided Bungee {@link BaseComponent}.
+     * @param c the {@link BaseComponent}.
+     * @return a new {@link FormatableChat}.
+     */
+    public static FormatableChat chatComponent(BaseComponent c) {
+        return Chat.chatComponent(toAdventure(c));
+    }
+
+
+
+    /**
+     * Creates a {@link FormatableChat} from the provided Bungee {@link BaseComponent BaseComponent[]}.
+     * @param c the array of {@link BaseComponent}.
+     * @return a new {@link FormatableChat}.
+     */
+    public static FormatableChat chatComponent(BaseComponent[] c) {
+        return Chat.chatComponent(toAdventure(c));
+    }
+
+
+
+    /**
+     * Converts the Bungee {@link BaseComponent} array into Adventure {@link Component}.
+     * @param components the Bungee {@link BaseComponent} array.
+     * @return a {@link Component}.
+     */
+    public static Component toAdventure(BaseComponent[] components) {
+        return BungeeComponentSerializer.get().deserialize(components);
+    }
+    /**
+     * Converts the Bungee {@link BaseComponent} into Adventure {@link Component}.
+     * @param component the Bungee {@link BaseComponent}.
+     * @return a {@link Component}.
+     */
+    public static Component toAdventure(BaseComponent component) {
+        return toAdventure(new BaseComponent[] { component });
+    }
+
+    /**
+     * Converts the Adventure {@link Component} into Bungee {@link BaseComponent} array.
+     * @param component the Adventure {@link Component}.
+     * @return a {@link BaseComponent} array.
+     */
+    public static BaseComponent[] toBungeeArray(ComponentLike component) {
+        return BungeeComponentSerializer.get().serialize(component.asComponent());
+    }
+
+    /**
+     * Converts the Adventure {@link Component} into Bungee {@link BaseComponent}.
+     * @param component the Adventure {@link Component}.
+     * @return a {@link BaseComponent}.
+     */
+    public static BaseComponent toBungee(ComponentLike component) {
+        BaseComponent[] arr = toBungeeArray(component);
+        return arr.length == 1 ? arr[0] : new net.md_5.bungee.api.chat.TextComponent(arr);
+    }
+
+
+    private ChatBungee() {}
+}

pandalib-bungee-permissions/src/main/java/fr/pandacube/lib/bungee/permissions/PandalibBungeePermissions.java

@@ -25,7 +25,6 @@ import java.util.function.Function;
  */
 public class PandalibBungeePermissions implements Listener {
 
-
     /**
      * Registers event listener to redirect permission checks to {@code pandalib-permissions}.
      * @param bungeePlugin a BungeeCord plugin.
@@ -35,6 +34,8 @@ public class PandalibBungeePermissions implements Listener {
     }
 
 
+    private PandalibBungeePermissions() {}
+
     /**
      * Event handler called when a plugin asks if a player has a permission.
      * @param event the permission check event.

pandalib-bungee/pom.xml

@@ -33,7 +33,7 @@
         </dependency>
         <dependency>
             <groupId>fr.pandacube.lib</groupId>
-            <artifactId>pandalib-chat</artifactId>
+            <artifactId>pandalib-bungee-chat</artifactId>
             <version>${project.version}</version>
         </dependency>
         <dependency>

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/PandaLibBungee.java

@@ -4,26 +4,46 @@ import fr.pandacube.lib.bungee.util.BungeeDailyLogRotateFileHandler;
 import fr.pandacube.lib.bungee.util.PluginMessagePassthrough;
 import net.md_5.bungee.api.plugin.Plugin;
 
+/**
+ * General class used to initialize some tools of pandalib-bungee, following the bungee plugin's lifecycle.
+ */
 public class PandaLibBungee {
 
     private static Plugin plugin;
 
+    /**
+     * Method to be called in {@link Plugin#onLoad()} method.
+     * @param plugin the plugin instance.
+     */
     public static void onLoad(Plugin plugin) {
         PandaLibBungee.plugin = plugin;
 
     }
 
+    /**
+     * Method to be called in {@link Plugin#onEnable()} method.
+     */
     public static void onEnable() {
         PluginMessagePassthrough.init(plugin);
         BungeeDailyLogRotateFileHandler.init(true);
     }
 
 
+    /**
+     * Method to be called in {@link Plugin#onDisable()} method.
+     */
     public static void disable() {
 
     }
 
+    /**
+     * Returns the plugin instance.
+     * @return the plugin instance.
+     */
     public static Plugin getPlugin() {
         return plugin;
     }
+
+    private PandaLibBungee() {}
+
 }

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/backup/BungeeBackupConfig.java

@@ -6,12 +6,40 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * Class that holds the configuration varables for {@link BungeeBackupManager}.
+ */
 @SuppressWarnings("CanBeFinal")
 public class BungeeBackupConfig {
+    /**
+     * Tells if the working directory of the current bungee instance should be backed up.
+     */
     public boolean workdirBackupEnabled = true;
+    /**
+     * Tells if the old logs of the current bungee instance should be backed up.
+     */
     public boolean logsBackupEnabled = true;
+    /**
+     * The cron scheduling of when the workdir backup occurs.
+     */
     public String scheduling = "0 2 * * *"; // cron format, here is every day at 2am
+    /**
+     * The destination directory for the backups.
+     */
     public File backupDirectory = null;
+    /**
+     * The configuration handling the cleaning of the backup directory.
+     */
     public BackupCleaner workdirBackupCleaner = BackupCleaner.KEEPING_1_EVERY_N_MONTH(3).merge(BackupCleaner.KEEPING_N_LAST(5));
+    /**
+     * A list of ignored files or directory in the workdir to exclude from the backup.
+     */
     public List<String> workdirIgnoreList = new ArrayList<>();
+
+    /**
+     * Creates a new {@link BungeeBackupConfig}.
+     */
+    public BungeeBackupConfig() {
+
+    }
 }

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/backup/BungeeBackupManager.java

@@ -6,10 +6,17 @@ import fr.pandacube.lib.core.backup.RotatedLogsBackupProcess;
 
 import java.io.File;
 
+/**
+ * Handles the backup processes for a Bungeecord instance.
+ */
 public class BungeeBackupManager extends BackupManager {
 
 	BungeeBackupConfig config;
-	
+
+	/**
+	 * Instanciate a new {@link BungeeBackupManager}.
+	 * @param config the configuration.
+	 */
 	public BungeeBackupManager(BungeeBackupConfig config) {
 		super(config.backupDirectory);
 		setConfig(config);
@@ -24,12 +31,19 @@ public class BungeeBackupManager extends BackupManager {
 		super.addProcess(process);
 	}
 
+	/**
+	 * Sets a new configuration for this backup manager.
+	 * @param config the new configuration.
+	 */
 	public void setConfig(BungeeBackupConfig config) {
 		this.config = config;
 		backupQueue.forEach(this::updateProcessConfig);
 	}
 
-
+	/**
+	 * Deploys the new configuration to the provided backup process.
+	 * @param process the process on which to apply the new config.
+	 */
 	public void updateProcessConfig(BackupProcess process) {
 		if (process instanceof BungeeWorkdirProcess) {
 			process.setEnabled(config.workdirBackupEnabled);

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/backup/BungeeWorkdirProcess.java

@@ -5,8 +5,15 @@ import fr.pandacube.lib.core.backup.BackupProcess;
 import java.io.File;
 import java.util.function.BiPredicate;
 
+/**
+ * The backup process responsible for the working directory of the current Bungeecord instance.
+ */
 public class BungeeWorkdirProcess extends BackupProcess {
-	
+
+	/**
+	 * Instantiates this backup process.
+	 * @param bm the backup manager.
+	 */
 	protected BungeeWorkdirProcess(BungeeBackupManager bm) {
 		super(bm, "workdir");
 	}

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/commands/BungeeBrigadierCommand.java

@@ -7,7 +7,7 @@ import com.mojang.brigadier.suggestion.Suggestions;
 import com.mojang.brigadier.tree.LiteralCommandNode;
 import fr.pandacube.lib.commands.BrigadierCommand;
 import fr.pandacube.lib.commands.SuggestionsSupplier;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.connection.ProxiedPlayer;

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/commands/BungeeBrigadierDispatcher.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.bungee.commands;
 
-import fr.pandacube.lib.chat.Chat;
+import fr.pandacube.lib.bungee.chat.ChatBungee;
 import fr.pandacube.lib.commands.BrigadierDispatcher;
 import net.kyori.adventure.text.ComponentLike;
 import net.md_5.bungee.api.CommandSender;
@@ -71,6 +71,6 @@ public class BungeeBrigadierDispatcher extends BrigadierDispatcher<CommandSender
 
 	@Override
 	protected void sendSenderMessage(CommandSender sender, ComponentLike message) {
-		sender.sendMessage(Chat.toBungee(message.asComponent()));
+		sender.sendMessage(ChatBungee.toBungee(message.asComponent()));
 	}
 }

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/players/BungeeOnlinePlayer.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.bungee.players;
 
-import fr.pandacube.lib.chat.Chat;
+import fr.pandacube.lib.bungee.chat.ChatBungee;
 import fr.pandacube.lib.core.mc_version.ProtocolVersion;
 import fr.pandacube.lib.players.standalone.AbstractOnlinePlayer;
 import fr.pandacube.lib.reflect.Reflect;
@@ -84,13 +84,13 @@ public interface BungeeOnlinePlayer extends BungeeOffPlayer, AbstractOnlinePlaye
 
     @Override
     default void sendMessage(Component message) {
-        getBungeeProxiedPlayer().sendMessage(Chat.toBungee(message));
+        getBungeeProxiedPlayer().sendMessage(ChatBungee.toBungee(message));
     }
 
     @Override
     default void sendTitle(Component title, Component subtitle, int fadeIn, int stay, int fadeOut) {
         ProxyServer.getInstance().createTitle()
-                .title(Chat.toBungee(title)).subTitle(Chat.toBungee(subtitle))
+                .title(ChatBungee.toBungee(title)).subTitle(ChatBungee.toBungee(subtitle))
                 .fadeIn(fadeIn).stay(stay).fadeOut(fadeOut)
                 .send(getBungeeProxiedPlayer());
     }

pandalib-bungee/src/main/java/fr/pandacube/lib/bungee/util/BungeeDailyLogRotateFileHandler.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.bungee.util;
 
-import fr.pandacube.lib.util.logs.DailyLogRotateFileHandler;
+import fr.pandacube.lib.util.log.DailyLogRotateFileHandler;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.log.ConciseFormatter;
 

pandalib-chat/pom.xml

@@ -26,26 +26,35 @@
         <dependency>
             <groupId>net.kyori</groupId>
             <artifactId>adventure-api</artifactId>
-            <version>4.11.0</version>
+            <version>4.15.0</version>
         </dependency>
         <dependency>
             <groupId>net.kyori</groupId>
-            <artifactId>adventure-platform-bungeecord</artifactId>
-            <version>4.1.1</version>
+            <artifactId>adventure-text-serializer-gson</artifactId>
+            <version>4.13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>net.kyori</groupId>
+            <artifactId>adventure-text-serializer-legacy</artifactId>
+            <version>4.13.0</version>
         </dependency>
         <dependency>
             <groupId>net.kyori</groupId>
             <artifactId>adventure-text-serializer-plain</artifactId>
-            <version>4.11.0</version>
+            <version>4.15.0</version>
+        </dependency>
+        <dependency>
+            <groupId>net.kyori</groupId>
+            <artifactId>adventure-text-minimessage</artifactId>
+            <version>4.15.0</version>
         </dependency>
 
 
 
         <dependency>
-            <groupId>net.md-5</groupId>
-            <artifactId>bungeecord-chat</artifactId>
-            <version>${bungeecord.version}</version>
-            <scope>compile</scope>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.10.1</version>
         </dependency>
     </dependencies>
 

pandalib-chat/src/main/java/fr/pandacube/lib/chat/Chat.java

@@ -1,15 +1,12 @@
 package fr.pandacube.lib.chat;
 
-import java.awt.Color;
-import java.util.Objects;
-import java.util.function.Consumer;
-import java.util.function.UnaryOperator;
-
 import net.kyori.adventure.key.Key;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.ComponentBuilder;
 import net.kyori.adventure.text.ComponentLike;
 import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TranslationArgument;
+import net.kyori.adventure.text.TranslationArgumentLike;
 import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.event.HoverEvent;
 import net.kyori.adventure.text.event.HoverEventSource;
@@ -18,13 +15,18 @@ import net.kyori.adventure.text.format.Style;
 import net.kyori.adventure.text.format.TextColor;
 import net.kyori.adventure.text.format.TextDecoration;
 import net.kyori.adventure.text.format.TextDecoration.State;
-import net.kyori.adventure.text.serializer.bungeecord.BungeeComponentSerializer;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
-import net.md_5.bungee.api.ChatColor;
-import net.md_5.bungee.api.chat.BaseComponent;
 import org.jetbrains.annotations.NotNull;
 
+import java.awt.*;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.function.Consumer;
+import java.util.function.UnaryOperator;
+
 /**
  * A builder for chat components.
  * <p>
@@ -63,26 +65,10 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      * Builds the component into Adventure Component instance.
      * @return the {@link Component} built from this {@link Chat} component.
      */
-    public Component getAdv() {
+    public Component get() {
         return builder.build();
     }
 
-    /**
-     * Builds the component into BungeeCord {@link BaseComponent} instance.
-     * @return the {@link BaseComponent} built from this {@link Chat} component.
-     */
-    public BaseComponent get() {
-        return toBungee(getAdv());
-    }
-
-    /**
-     * Builds the component into BungeeCord {@link BaseComponent} array.
-     * @return the {@link BaseComponent} array built from this {@link Chat} component.
-     */
-    public BaseComponent[] getAsArray() {
-        return toBungeeArray(getAdv());
-    }
-
     private static final LegacyComponentSerializer LEGACY_SERIALIZER_BUNGEE_FRIENDLY = LegacyComponentSerializer.builder()
             .hexColors()
             .useUnusualXRepeatedCharacterHexFormat()
@@ -93,7 +79,7 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      * @return the legacy text. RGB colors are in BungeeCord format.
      */
     public String getLegacyText() {
-        return LEGACY_SERIALIZER_BUNGEE_FRIENDLY.serialize(getAdv());
+        return LEGACY_SERIALIZER_BUNGEE_FRIENDLY.serialize(get());
     }
 
     /**
@@ -101,12 +87,12 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      * @return the plain text of this component.
      */
     public String getPlainText() {
-        return PlainTextComponentSerializer.plainText().serializeOr(getAdv(), "");
+        return PlainTextComponentSerializer.plainText().serializeOr(get(), "");
     }
 
     @Override
     public @NotNull HoverEvent<Component> asHoverEvent(@NotNull UnaryOperator<Component> op) {
-        return HoverEvent.showText(op.apply(getAdv()));
+        return HoverEvent.showText(op.apply(get()));
     }
 
     /**
@@ -115,7 +101,32 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      */
     @Override
     public @NotNull Component asComponent() {
-        return getAdv();
+        return get();
+    }
+
+    /**
+     * Builds the component into Adventure Component instance, also down sampling the RGB colors to named colors.
+     * @return the {@link Component} built from this {@link Chat} component, with down-sampled colors.
+     */
+    public Component getAsDownSampledColorsComponent() {
+        String json = GsonComponentSerializer.colorDownsamplingGson().serialize(get());
+        return GsonComponentSerializer.gson().deserialize(json);
+    }
+
+    /**
+     * Returns a new {@link Chat} consisting of this {@link Chat} instance, with the RGB colors down-sampled to named colors.
+     * @return a new {@link Chat} instance, with down-sampled colors.
+     */
+    public Chat getAsDownSampledColors() {
+        return chatComponent(getAsDownSampledColorsComponent());
+    }
+
+    /**
+     * Returns a MiniMessage representation of this {@link Chat} component.
+     * @return the MiniMessage representation if this {@link Chat} component.
+     */
+    public String getMiniMessage() {
+        return MiniMessage.miniMessage().serialize(get());
     }
 
 
@@ -155,15 +166,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
         return this;
     }
 
-    /**
-     * Appends a BungeeCord {@link BaseComponent} to this component.
-     * @param comp the component to append.
-     * @return this.
-     */
-    public Chat then(BaseComponent comp) {
-        return then(toAdventure(comp));
-    }
-
     /**
      * Appends a component to this component.
      * @param comp the component to append.
@@ -178,15 +180,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
         return then(comp.asComponent());
     }
 
-    /**
-     * Appends a BungeeCord {@link BaseComponent} array to this component.
-     * @param comp the components to append.
-     * @return this.
-     */
-    public Chat then(BaseComponent[] comp) {
-        return then(toAdventure(comp));
-    }
-
 
 
 
@@ -261,7 +254,7 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      * @param comp the component.
      * @return this.
      */
-    public Chat thenPlayerName(Component comp) { return then(playerNameComponent(comp)); }
+    public Chat thenPlayerName(ComponentLike comp) { return then(playerNameComponent(comp)); }
 
     /**
      * Appends a component consisting of a new line.
@@ -270,12 +263,26 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
     public Chat thenNewLine() { return then(Component.newline()); }
 
     /**
-     * Appends a component with the provided legacy text as its content.
-     * @param legacyText the legacy text.
+     * Appends a component with the provided legacy text as its content, using the section {@code "§"} character.
+     * @param legacyText the legacy text that uses the {@code "§"} character.
      * @return this.
      */
     public Chat thenLegacyText(Object legacyText) { return then(legacyText(legacyText)); }
 
+    /**
+     * Appends a component with the provided legacy text as its content, using the ampersand {@code "&"} character.
+     * @param legacyText the legacy text that uses the {@code "&"} character.
+     * @return this.
+     */
+    public Chat thenLegacyAmpersandText(Object legacyText) { return then(legacyAmpersandText(legacyText)); }
+
+    /**
+     * Appends a component with the provided MiniMessage text as its content.
+     * @param miniMessageText the MiniMessage text.
+     * @return this.
+     */
+    public Chat thenMiniMessage(String miniMessageText) { return then(miniMessageText(miniMessageText)); }
+
     /**
      * Appends a component with the provided translation key and parameters.
      * @param key the translation key.
@@ -452,17 +459,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      */
     public Chat thenLeftText(ComponentLike leftText) { return then(leftText(leftText, console)); }
 
-    /**
-     * Appends a component filling a chat line with the configured decoration character and
-     * color and a left-aligned text.
-     * @param leftText the text aligned to the left.
-     * @return a new {@link FormatableChat} filling a chat line with the configured decoration character
-     *         and color and a left-aligned text.
-     * @deprecated uses Bungeecord chat API.
-     */
-    @Deprecated
-    public Chat thenLeftText(BaseComponent leftText) { return thenLeftText(chatComponent(leftText)); }
-
     /**
      * Appends a component filling a chat line with the configured decoration character and
      * color and a right-aligned text.
@@ -472,17 +468,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
      */
     public Chat thenRightText(ComponentLike rightText) { return then(rightText(rightText, console)); }
 
-    /**
-     * Appends a component filling a chat line with the configured decoration character and
-     * color and a right-aligned text.
-     * @param rightText the text aligned to the right.
-     * @return a new {@link FormatableChat} filling a chat line with the configured decoration character
-     *         and color and a right-aligned text.
-     * @deprecated uses Bungeecord chat API.
-     */
-    @Deprecated
-    public Chat thenRightText(BaseComponent rightText) { return thenRightText(chatComponent(rightText)); }
-
     /**
      * Appends a component filling a chat line with the configured decoration character and
      * color and a centered text.
@@ -494,19 +479,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
         return then(centerText(centerText, console));
     }
 
-    /**
-     * Appends a component filling a chat line with the configured decoration character and
-     * color and a centered text.
-     * @param centerText the text aligned to the center.
-     * @return a new {@link FormatableChat} filling a chat line with the configured decoration character
-     *         and color and a centered text.
-     * @deprecated uses Bungeecord chat API.
-     */
-    @Deprecated
-    public Chat thenCenterText(BaseComponent centerText) {
-        return thenCenterText(chatComponent(centerText));
-    }
-
     /**
      * Appends a component filling a chat line with the configured decoration character and color.
      * @return a new {@link FormatableChat} filling a chat line with a decoration character and color.
@@ -586,12 +558,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
          * @return this.
          */
         public FormatableChat color(TextColor c) { builder.color(c); return this; }
-        /**
-         * Sets the color of this component.
-         * @param c the color.
-         * @return this.
-         */
-        public FormatableChat color(ChatColor c) { return color(c == null ? null : TextColor.color(c.getColor().getRGB())); }
         /**
          * Sets the color of this component.
          * @param c the color.
@@ -603,7 +569,16 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
          * @param c the color.
          * @return this.
          */
-        public FormatableChat color(String c) { return color(c == null ? null : ChatColor.of(c)); }
+        public FormatableChat color(String c) {
+            if (c == null)
+                return color((TextColor) null);
+            TextColor tc = c.startsWith("#")
+                    ? TextColor.fromCSSHexString(c)
+                    : NamedTextColor.NAMES.value(c.toLowerCase(Locale.ROOT));
+            if (tc == null)
+                throw new IllegalArgumentException("Invalid color string '" + c + "'.");
+            return color(tc);
+        }
 
 
         /**
@@ -881,18 +856,6 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
          * @return this.
          */
         public FormatableChat hover(ComponentLike v) { return hover(v.asComponent()); }
-        /**
-         * Configure this component to show the provided component when hovered.
-         * @param v the component to show.
-         * @return this.
-         */
-        public FormatableChat hover(BaseComponent v) { return hover(toAdventure(v)); }
-        /**
-         * Configure this component to show the provided component when hovered.
-         * @param v the component to show.
-         * @return this.
-         */
-        public FormatableChat hover(BaseComponent[] v) { return hover(toAdventure(v)); }
         /**
          * Configure this component to show the provided legacy text when hovered.
          * @param legacyText the legacy text to show.
@@ -920,7 +883,7 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
 
     @Override
     public int hashCode() {
-        return getAdv().hashCode();
+        return get().hashCode();
     }
 
     @Override
@@ -931,60 +894,41 @@ public abstract sealed class Chat extends ChatStatic implements HoverEventSource
 
 
 
+    /* package */ static ComponentLike filterObjToComponentLike(Object v) {
+        return switch (v) {
+            case ComponentLike componentLike -> componentLike;
+            case null, default -> Component.text(Objects.toString(v));
+        };
+    }
 
     /* package */ static ComponentLike[] filterObjToComponentLike(Object[] values) {
         if (values == null)
             return null;
         ComponentLike[] ret = new ComponentLike[values.length];
         for (int i = 0; i < values.length; i++) {
-            Object v = values[i];
-            if (v instanceof BaseComponent[])
-                ret[i] = toAdventure((BaseComponent[]) v);
-            else if (v instanceof BaseComponent)
-                ret[i] = toAdventure((BaseComponent) v);
-            else if (v instanceof ComponentLike)
-                ret[i] = (ComponentLike) v;
-            else
-                ret[i] = Component.text(Objects.toString(v));
+            ret[i] = filterObjToComponentLike(values[i]);
         }
         return ret;
     }
 
 
-    /**
-     * Converts the Bungee {@link BaseComponent} array into Adventure {@link Component}.
-     * @param components the Bungee {@link BaseComponent} array.
-     * @return a {@link Component}.
-     */
-    public static Component toAdventure(BaseComponent[] components) {
-        return BungeeComponentSerializer.get().deserialize(components);
-    }
-    /**
-     * Converts the Bungee {@link BaseComponent} into Adventure {@link Component}.
-     * @param component the Bungee {@link BaseComponent}.
-     * @return a {@link Component}.
-     */
-    public static Component toAdventure(BaseComponent component) {
-        return toAdventure(new BaseComponent[] { component });
+    /* package */ static TranslationArgumentLike[] filterObjToTranslationArgumentLike(Object[] values) {
+        if (values == null)
+            return null;
+        TranslationArgumentLike[] ret = new TranslationArgumentLike[values.length];
+        for (int i = 0; i < values.length; i++) {
+            Object v = values[i];
+            if (v instanceof Number n)
+                ret[i] = TranslationArgument.numeric(n);
+            else if (v instanceof Boolean b)
+                ret[i] = TranslationArgument.bool(b);
+            else
+                ret[i] = TranslationArgument.component(filterObjToComponentLike(values[i]));
+        }
+        return ret;
     }
 
-    /**
-     * Converts the Adventure {@link Component} into Bungee {@link BaseComponent} array.
-     * @param component the Adventure {@link Component}.
-     * @return a {@link BaseComponent} array.
-     */
-    public static BaseComponent[] toBungeeArray(Component component) {
-        return BungeeComponentSerializer.get().serialize(component);
-    }
-    /**
-     * Converts the Adventure {@link Component} into Bungee {@link BaseComponent}.
-     * @param component the Adventure {@link Component}.
-     * @return a {@link BaseComponent}.
-     */
-    public static BaseComponent toBungee(Component component) {
-        BaseComponent[] arr = toBungeeArray(component);
-        return arr.length == 1 ? arr[0] : new net.md_5.bungee.api.chat.TextComponent(arr);
-    }
+
 
     /**
      * Force the italic formatting to be set to false if it is not explicitly set in the component.

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatColorGradient.java

@@ -4,15 +4,30 @@ import java.util.ArrayList;
 import java.util.List;
 
 import net.kyori.adventure.text.format.TextColor;
+import org.jetbrains.annotations.NotNull;
 
 /**
  * A custom gradient with at least 2 colors in it.
  */
 public class ChatColorGradient {
-    private record GradientColor(float location, TextColor color) { }
+
+    private record GradientColor(
+            float location,
+            TextColor color
+    ) implements Comparable<GradientColor> {
+        @Override
+        public int compareTo(@NotNull ChatColorGradient.GradientColor o) {
+            return Float.compare(location(), o.location());
+        }
+    }
 
     private final List<GradientColor> colors = new ArrayList<>();
 
+    /**
+     * Create the custom gradient.
+     */
+    public ChatColorGradient() {}
+
     /**
      * Put a specific color at a specific location in the gradient.
      * @param gradientLocation the location in the gradient.
@@ -21,6 +36,7 @@ public class ChatColorGradient {
      */
     public synchronized ChatColorGradient add(float gradientLocation, TextColor gradientColor) {
         colors.add(new GradientColor(gradientLocation, gradientColor));
+        colors.sort(null);
         return this;
     }
 
@@ -31,25 +47,26 @@ public class ChatColorGradient {
      */
     public synchronized TextColor pickColorAt(float gradientLocation) {
         if (colors.isEmpty())
-            throw new IllegalStateException("Must define at least one color in this ChatValueGradient instance.");
+            throw new IllegalStateException("Must define at least one color in this ChatColorGradient instance.");
         if (colors.size() == 1)
-            return colors.get(0).color();
+            return colors.getFirst().color();
 
-        colors.sort((p1, p2) -> Float.compare(p1.location(), p2.location()));
-
-        if (gradientLocation <= colors.get(0).location())
-            return colors.get(0).color();
-        if (gradientLocation >= colors.get(colors.size() - 1).location())
-            return colors.get(colors.size() - 1).color();
-
-        int p1 = 1;
-        for (; p1 < colors.size(); p1++) {
-            if (colors.get(p1).location() >= gradientLocation)
+        int i = 0;
+        for (; i < colors.size(); i++) {
+            if (gradientLocation <= colors.get(i).location())
                 break;
         }
-        int p0 = p1 - 1;
-        float v0 = colors.get(p0).location(), v1 = colors.get(p1).location();
-        TextColor cc0 = colors.get(p0).color(), cc1 = colors.get(p1).color();
-        return ChatColorUtil.interpolateColor(v0, v1, gradientLocation, cc0, cc1);
+
+        if (i == 0)
+            return colors.get(i).color();
+        if (i == colors.size())
+            return colors.getLast().color();
+
+        int p = i - 1;
+        float pLoc = colors.get(p).location();
+        float iLoc = colors.get(i).location();
+        TextColor pCol = colors.get(p).color();
+        TextColor iCol = colors.get(i).color();
+        return ChatColorUtil.interpolateColor(pLoc, iLoc, gradientLocation, pCol, iCol);
     }
 }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatColorUtil.java

@@ -1,14 +1,14 @@
 package fr.pandacube.lib.chat;
 
+import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.format.TextDecoration;
+import net.kyori.adventure.text.format.TextFormat;
+import net.kyori.adventure.util.RGBLike;
+
 import java.util.regex.Pattern;
 
-import net.kyori.adventure.text.format.NamedTextColor;
-import net.kyori.adventure.text.format.TextColor;
-import net.kyori.adventure.util.RGBLike;
-import net.md_5.bungee.api.ChatColor;
-
 /**
- * Provides methods to manipulate legacy colors and {@link ChatColor} class.
+ * Provides methods to manipulate legacy colors.
  */
 public class ChatColorUtil {
 
@@ -38,12 +38,12 @@ public class ChatColorUtil {
         int length = legacyText.length();
 
         for (int index = length - 2; index >= 0; index--) {
-            if (legacyText.charAt(index) == ChatColor.COLOR_CHAR) {
+            if (legacyText.charAt(index) == LegacyChatFormat.COLOR_CHAR) {
 
                 // detection of rgb color §x§0§1§2§3§4§5
                 String rgb;
                 if (index > 11
-                        && legacyText.charAt(index - 12) == ChatColor.COLOR_CHAR
+                        && legacyText.charAt(index - 12) == LegacyChatFormat.COLOR_CHAR
                         && (legacyText.charAt(index - 11) == 'x'
                         || legacyText.charAt(index - 11) == 'X')
                         && HEX_COLOR_PATTERN.matcher(rgb = legacyText.substring(index - 12, index + 2)).matches()) {
@@ -64,7 +64,7 @@ public class ChatColorUtil {
 
                 // try detect non-rgb format
                 char colorChar = legacyText.charAt(index + 1);
-                ChatColor legacyColor = getChatColorByChar(colorChar);
+                LegacyChatFormat legacyColor = LegacyChatFormat.of(colorChar);
 
                 if (legacyColor != null) {
                     result.insert(0, legacyColor);
@@ -83,15 +83,6 @@ public class ChatColorUtil {
         return result.toString();
     }
 
-    /**
-     * Returns the {@link ChatColor} associated with the provided char, case-insensitive.
-     * @param code the case-insensitive char code.
-     * @return the corresponding {@link ChatColor}.
-     */
-    public static ChatColor getChatColorByChar(char code) {
-        return ChatColor.getByChar(Character.toLowerCase(code));
-    }
-
 
 
 
@@ -99,7 +90,7 @@ public class ChatColorUtil {
      * Translate the color code of the provided string, that uses the alt color char, to the {@code §} color code
      * format.
      * <p>
-     * This method is the improved version of {@link ChatColor#translateAlternateColorCodes(char, String)},
+     * This method is the improved version of Bukkit’s {@code ChatColor.translateAlternateColorCodes(char, String)},
      * because it takes into account essentials RGB color code, and {@code altColorChar} escaping (by doubling it).
      * Essentials RGB color code are converted to Bungee chat RGB format, so the returned string can be converted
      * to component (see {@link Chat#legacyText(Object)}).
@@ -112,7 +103,7 @@ public class ChatColorUtil {
      */
     public static String translateAlternateColorCodes(char altColorChar, String textToTranslate)
     {
-        char colorChar = ChatColor.COLOR_CHAR;
+        char colorChar = LegacyChatFormat.COLOR_CHAR;
         StringBuilder acc = new StringBuilder();
         char[] b = textToTranslate.toCharArray();
         for ( int i = 0; i < b.length; i++ )
@@ -180,7 +171,7 @@ public class ChatColorUtil {
      * @return the text fully italic.
      */
     public static String forceItalic(String legacyText) {
-        return forceFormat(legacyText, ChatColor.ITALIC);
+        return forceFormat(legacyText, TextDecoration.ITALIC);
     }
 
     /**
@@ -190,7 +181,7 @@ public class ChatColorUtil {
      * @return the text fully bold.
      */
     public static String forceBold(String legacyText) {
-        return forceFormat(legacyText, ChatColor.BOLD);
+        return forceFormat(legacyText, TextDecoration.BOLD);
     }
 
     /**
@@ -200,7 +191,7 @@ public class ChatColorUtil {
      * @return the text fully underlined.
      */
     public static String forceUnderline(String legacyText) {
-        return forceFormat(legacyText, ChatColor.UNDERLINE);
+        return forceFormat(legacyText, TextDecoration.UNDERLINED);
     }
 
     /**
@@ -210,7 +201,7 @@ public class ChatColorUtil {
      * @return the text fully stroked through.
      */
     public static String forceStrikethrough(String legacyText) {
-        return forceFormat(legacyText, ChatColor.STRIKETHROUGH);
+        return forceFormat(legacyText, TextDecoration.STRIKETHROUGH);
     }
 
     /**
@@ -220,15 +211,16 @@ public class ChatColorUtil {
      * @return the text fully obfuscated.
      */
     public static String forceObfuscated(String legacyText) {
-        return forceFormat(legacyText, ChatColor.MAGIC);
+        return forceFormat(legacyText, TextDecoration.OBFUSCATED);
     }
 
 
 
-    private static String forceFormat(String legacyText, ChatColor format) {
+    private static String forceFormat(String legacyText, TextFormat format) {
+        String formatStr = LegacyChatFormat.of(format).toString();
         return format + legacyText
-                .replace(format.toString(), "") // remove previous tag to make the result cleaner
-                .replaceAll("§([a-frA-FR\\d])", "§$1" + format);
+                .replace(formatStr, "") // remove previous tag to make the result cleaner
+                .replaceAll("§([a-frA-FR\\d])", "§$1" + formatStr);
     }
 
 
@@ -243,40 +235,12 @@ public class ChatColorUtil {
      * @return the resulting text.
      */
     public static String resetToColor(String legacyText, String color) {
-        return legacyText.replace(ChatColor.RESET.toString(), color);
+        return legacyText.replace(LegacyChatFormat.RESET.toString(), color);
     }
 
 
 
 
-    /**
-     * Converts the provided {@link ChatColor} to its Adventure counterpart.
-     * @param bungee a BungeeCord {@link ChatColor} instance.
-     * @return the {@link TextColor} equivalent to the provided {@link ChatColor}.
-     */
-    public static TextColor toAdventure(ChatColor bungee) {
-        if (bungee == null)
-            return null;
-        if (bungee.getColor() == null)
-            throw new IllegalArgumentException("The provided Bungee ChatColor must be an actual color (not format nor reset).");
-        return TextColor.color(bungee.getColor().getRGB());
-    }
-
-    /**
-     * Converts the provided {@link TextColor} to its BungeeCord counterpart.
-     * @param col a Adventure {@link TextColor} instance.
-     * @return the {@link ChatColor} equivalent to the provided {@link TextColor}.
-     */
-    public static ChatColor toBungee(TextColor col) {
-        if (col == null)
-            return null;
-        if (col instanceof NamedTextColor) {
-            return ChatColor.of(((NamedTextColor) col).toString());
-        }
-        return ChatColor.of(col.asHexString());
-    }
-
-
     /**
      * Create a color, interpolating between 2 colors.
      * @param v0 the value corresponding to color {@code cc0}.
@@ -293,4 +257,7 @@ public class ChatColorUtil {
     }
 
 
+
+    private ChatColorUtil() {}
+
 }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatConfig.java

@@ -50,7 +50,7 @@ public class ChatConfig {
     /**
      * The color used to display data in a message.
      */
-    public static TextColor dataColor = PandaTheme.CHAT_GRAY_MID;
+    public static TextColor dataColor = NamedTextColor.GRAY;
 
     /**
      * The color used for displayed URLs and clickable URLs.
@@ -87,7 +87,7 @@ public class ChatConfig {
      */
     public static int getPrefixWidth(boolean console) {
         Chat c;
-        return prefix == null ? 0 : (c = prefix.get()) == null ? 0 : ChatUtil.componentWidth(c.getAdv(), console);
+        return prefix == null ? 0 : (c = prefix.get()) == null ? 0 : ChatUtil.componentWidth(c.get(), console);
     }
 
 
@@ -157,5 +157,9 @@ public class ChatConfig {
                     .thenText("] ");
         }
 
+        private PandaTheme() {}
+
     }
+
+    private ChatConfig() {}
 }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatFilledLine.java

@@ -59,6 +59,7 @@ public class ChatFilledLine implements ComponentLike {
     private boolean decorationBold = false;
     private int nbSide = ChatConfig.nbCharMargin;
     private boolean spacesAroundText = false;
+    private boolean spacesDecorationRightSide = false;
     private boolean console = false;
     private Integer maxWidth = null;
 
@@ -116,6 +117,16 @@ public class ChatFilledLine implements ComponentLike {
         return this;
     }
 
+    /**
+     * If the {@link #decoChar(char)} is set to space, also add spaces at the right of the text
+     * to reach the desired width.
+     * @return this.
+     */
+    public ChatFilledLine spacesDecorationRightSide() {
+        spacesDecorationRightSide = true;
+        return this;
+    }
+
     /**
      * Configure if the line will be rendered on console or not.
      * @param console true for console, false for game UI.
@@ -184,7 +195,7 @@ public class ChatFilledLine implements ComponentLike {
         Chat d = Chat.chat()
                 .then(Chat.text(ChatUtil.repeatedChar(decorationChar, nbCharLeft)).color(decorationColor).bold(decorationBold))
                 .then(text);
-        if (decorationChar != ' ')
+        if (decorationChar != ' ' || spacesDecorationRightSide)
             d.then(Chat.text(ChatUtil.repeatedChar(decorationChar, nbCharRight)).color(decorationColor).bold(decorationBold));
         return (FormatableChat) d;
     }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatStatic.java

@@ -1,7 +1,6 @@
 package fr.pandacube.lib.chat;
 
-import java.util.Objects;
-
+import fr.pandacube.lib.chat.Chat.FormatableChat;
 import net.kyori.adventure.text.BlockNBTComponent;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.ComponentBuilder;
@@ -16,10 +15,10 @@ import net.kyori.adventure.text.TranslatableComponent;
 import net.kyori.adventure.text.event.HoverEventSource;
 import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
-import net.md_5.bungee.api.chat.BaseComponent;
 
-import fr.pandacube.lib.chat.Chat.FormatableChat;
+import java.util.Objects;
 
 /**
  * Abstract class holding the publicly accessible methods to create an instance of {@link Chat} component.
@@ -32,15 +31,6 @@ public abstract class ChatStatic {
         return new FormatableChat(componentToBuilder(c));
     }
 
-    /**
-     * Creates a {@link FormatableChat} from the provided Bungee {@link BaseComponent}.
-     * @param c the {@link BaseComponent}.
-     * @return a new {@link FormatableChat}.
-     */
-    public static FormatableChat chatComponent(BaseComponent c) {
-        return new FormatableChat(componentToBuilder(Chat.toAdventure(c)));
-    }
-
     /**
      * Creates a {@link FormatableChat} from the provided {@link ComponentLike}.
      * If the provided component is an instance of {@link Chat}, its content will be duplicated, and the provided one
@@ -60,15 +50,6 @@ public abstract class ChatStatic {
         return new FormatableChat(Component.text());
     }
 
-    /**
-     * Creates a {@link FormatableChat} from the provided Bungee {@link BaseComponent BaseComponent[]}.
-     * @param c the array of {@link BaseComponent}.
-     * @return a new {@link FormatableChat}.
-     */
-    public static FormatableChat chatComponent(BaseComponent[] c) {
-        return chatComponent(Chat.toAdventure(c));
-    }
-
 
 
 
@@ -91,18 +72,58 @@ public abstract class ChatStatic {
 
 
     /**
-     * Creates a {@link FormatableChat} with the provided legacy text as its content.
-     * @param legacyText the legacy text to use as the content.
+     * Creates a {@link FormatableChat} with the provided legacy text as its content, using the section {@code "§"}
+     * character.
+     * @param legacyText the legacy text to use as the content, that uses the {@code "§"} character.
      * @return a new {@link FormatableChat} with the provided text as its content.
-     * @throws IllegalArgumentException If the {@code plainText} parameter is instance of {@link Chat} or
+     * @throws IllegalArgumentException If the {@code legacyText} parameter is instance of {@link Chat} or
      *         {@link Component}. The caller should use {@link #chatComponent(ComponentLike)}
      *         instead.
      */
     public static FormatableChat legacyText(Object legacyText) {
+        return legacyText(legacyText, LegacyComponentSerializer.SECTION_CHAR);
+    }
+
+
+    /**
+     * Creates a {@link FormatableChat} with the provided legacy text as its content, using the ampersand {@code "&"}
+     * character.
+     * @param legacyText the legacy text to use as the content, that uses the {@code "&"} character.
+     * @return a new {@link FormatableChat} with the provided text as its content.
+     * @throws IllegalArgumentException If the {@code legacyText} parameter is instance of {@link Chat} or
+     *         {@link Component}. The caller should use {@link #chatComponent(ComponentLike)}
+     *         instead.
+     */
+    public static FormatableChat legacyAmpersandText(Object legacyText) {
+        return legacyText(legacyText, LegacyComponentSerializer.AMPERSAND_CHAR);
+    }
+
+
+    /**
+     * Creates a {@link FormatableChat} with the provided legacy text as its content, using the specified
+     * legacyCharacter.
+     * @param legacyText the legacy text to use as the content.
+     * @param legacyCharacter the character used in the provided text to prefix color and format code.
+     * @return a new {@link FormatableChat} with the provided text as its content.
+     * @throws IllegalArgumentException If the {@code legacyText} parameter is instance of {@link Chat} or
+     *         {@link Component}. The caller should use {@link #chatComponent(ComponentLike)}
+     *         instead.
+     */
+    private static FormatableChat legacyText(Object legacyText, char legacyCharacter) {
         if (legacyText instanceof ComponentLike) {
             throw new IllegalArgumentException("Expected any object except instance of " + ComponentLike.class + ". Received " + legacyText + ". Please use ChatStatic.chatComponent(ComponentLike) instead.");
         }
-        return chatComponent(LegacyComponentSerializer.legacySection().deserialize(Objects.toString(legacyText)));
+        return chatComponent(LegacyComponentSerializer.legacy(legacyCharacter).deserialize(Objects.toString(legacyText)));
+    }
+
+
+    /**
+     * Creates a {@link FormatableChat} with the provided MiniMessage text as its content.
+     * @param miniMessageText the MiniMessage text to use as the content.
+     * @return a new {@link FormatableChat} with the provided text as its content.
+     */
+    public static FormatableChat miniMessageText(String miniMessageText) {
+        return chatComponent(MiniMessage.miniMessage().deserialize(miniMessageText));
     }
 
 
@@ -207,7 +228,7 @@ public abstract class ChatStatic {
      * @param c the {@link Component}.
      * @return a new {@link FormatableChat}.
      */
-    public static FormatableChat playerNameComponent(Component c) {
+    public static FormatableChat playerNameComponent(ComponentLike c) {
         FormatableChat fc = chatComponent(c);
         fc.builder.colorIfAbsent(NamedTextColor.WHITE);
         return fc;
@@ -223,7 +244,7 @@ public abstract class ChatStatic {
      * @return a new {@link FormatableChat} with the provided translation key and parameters.
      */
     public static FormatableChat translation(String key, Object... with) {
-        return new FormatableChat(Component.translatable().key(key).args(Chat.filterObjToComponentLike(with)));
+        return new FormatableChat(Component.translatable().key(key).arguments(Chat.filterObjToTranslationArgumentLike(with)));
     }
 
     /**
@@ -591,52 +612,39 @@ public abstract class ChatStatic {
 
 
     private static ComponentBuilder<?, ?> componentToBuilder(Component c) {
-        ComponentBuilder<?, ?> builder;
-        if (c instanceof TextComponent) {
-            builder = Component.text()
-                    .content(((TextComponent) c).content());
-        }
-        else if (c instanceof TranslatableComponent) {
-            builder = Component.translatable()
-                    .key(((TranslatableComponent) c).key())
-                    .args(((TranslatableComponent) c).args());
-        }
-        else if (c instanceof SelectorComponent) {
-            builder = Component.selector()
-                    .pattern(((SelectorComponent) c).pattern());
-        }
-        else if (c instanceof ScoreComponent) {
-            builder = Component.score()
-                    .name(((ScoreComponent) c).name())
-                    .objective(((ScoreComponent) c).objective());
-        }
-        else if (c instanceof KeybindComponent) {
-            builder = Component.keybind()
-                    .keybind(((KeybindComponent) c).keybind());
-        }
-        else if (c instanceof BlockNBTComponent) {
-            builder = Component.blockNBT()
-                    .interpret(((BlockNBTComponent) c).interpret())
-                    .nbtPath(((BlockNBTComponent) c).nbtPath())
-                    .pos(((BlockNBTComponent) c).pos());
-        }
-        else if (c instanceof EntityNBTComponent) {
-            builder = Component.entityNBT()
-                    .interpret(((EntityNBTComponent) c).interpret())
-                    .nbtPath(((EntityNBTComponent) c).nbtPath())
-                    .selector(((EntityNBTComponent) c).selector());
-        }
-        else if (c instanceof StorageNBTComponent) {
-            builder = Component.storageNBT()
-                    .interpret(((StorageNBTComponent) c).interpret())
-                    .nbtPath(((StorageNBTComponent) c).nbtPath())
-                    .storage(((StorageNBTComponent) c).storage());
-        }
-        else {
-            throw new IllegalArgumentException("Unknown component type " + c.getClass());
-        }
+        ComponentBuilder<?, ?> builder = switch (c) {
+            case TextComponent textComponent -> Component.text()
+                    .content(textComponent.content());
+            case TranslatableComponent translatableComponent -> Component.translatable()
+                    .key(translatableComponent.key()).arguments(translatableComponent.arguments());
+            case SelectorComponent selectorComponent -> Component.selector()
+                    .pattern(selectorComponent.pattern());
+            case ScoreComponent scoreComponent -> Component.score()
+                    .name(scoreComponent.name())
+                    .objective(scoreComponent.objective());
+            case KeybindComponent keybindComponent -> Component.keybind()
+                    .keybind(keybindComponent.keybind());
+            case BlockNBTComponent blockNBTComponent -> Component.blockNBT()
+                    .interpret(blockNBTComponent.interpret())
+                    .nbtPath(blockNBTComponent.nbtPath())
+                    .pos(blockNBTComponent.pos());
+            case EntityNBTComponent entityNBTComponent -> Component.entityNBT()
+                    .interpret(entityNBTComponent.interpret())
+                    .nbtPath(entityNBTComponent.nbtPath())
+                    .selector(entityNBTComponent.selector());
+            case StorageNBTComponent storageNBTComponent -> Component.storageNBT()
+                    .interpret(storageNBTComponent.interpret())
+                    .nbtPath(storageNBTComponent.nbtPath())
+                    .storage(storageNBTComponent.storage());
+            case null, default -> throw new IllegalArgumentException("Unknown component type " + (c == null ? "null" : c.getClass()));
+        };
         return builder.style(c.style()).append(c.children());
     }
 
+    /**
+     * Creates a new {@link ChatStatic} instance.
+     */
+    protected ChatStatic() {}
+
 
 }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatTreeNode.java

@@ -1,10 +1,13 @@
 package fr.pandacube.lib.chat;
 
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+
 import java.util.ArrayList;
 import java.util.List;
 
 /**
- * A tree structure of {@link Chat} component intended to be rendered in chat using {@link #render(boolean)}.
+ * A tree structure of chat {@link Component} intended to be rendered in chat using {@link #render(boolean)}.
  */
 public class ChatTreeNode {
 
@@ -19,7 +22,7 @@ public class ChatTreeNode {
     /**
      * The component for the current node.
      */
-    public final Chat component;
+    public final ComponentLike component;
 
     /**
      * Children nodes.
@@ -30,7 +33,7 @@ public class ChatTreeNode {
      * Construct a new {@link ChatTreeNode}.
      * @param cmp the component for the current node.
      */
-    public ChatTreeNode(Chat cmp) {
+    public ChatTreeNode(ComponentLike cmp) {
         component = cmp;
     }
 
@@ -50,7 +53,7 @@ public class ChatTreeNode {
      * Each element in the returned list represent 1 line of this tree view.
      * Thus, the caller may send each line separately or at once, depending on the quantity of data.
      * @param console true to render for console, false otherwise.
-     * @return an array of component, each element being a single line.
+     * @return a list of component, each element being a single line.
      */
     public List<Chat> render(boolean console) {
         List<Chat> ret = new ArrayList<>();

pandalib-chat/src/main/java/fr/pandacube/lib/chat/ChatUtil.java

@@ -1,5 +1,17 @@
 package fr.pandacube.lib.chat;
 
+import fr.pandacube.lib.chat.Chat.FormatableChat;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TranslatableComponent;
+import net.kyori.adventure.text.TranslationArgument;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.format.TextDecoration;
+import net.kyori.adventure.text.format.TextDecoration.State;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -10,16 +22,7 @@ import java.util.Set;
 import java.util.TreeSet;
 import java.util.stream.Collectors;
 
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.TextComponent;
-import net.kyori.adventure.text.TranslatableComponent;
-import net.kyori.adventure.text.format.NamedTextColor;
-import net.kyori.adventure.text.format.TextColor;
-import net.kyori.adventure.text.format.TextDecoration;
-import net.kyori.adventure.text.format.TextDecoration.State;
-import net.md_5.bungee.api.ChatColor;
-
-import fr.pandacube.lib.chat.Chat.FormatableChat;
+import static fr.pandacube.lib.chat.ChatStatic.chat;
 
 /**
  * Provides various methods and properties to manipulate text displayed in chat and other parts of the game.
@@ -127,7 +130,7 @@ public class ChatUtil {
                 pagesToDisplay.add(i);
         }
 
-        Chat d = ChatStatic.chat().thenLegacyText(prefix);
+        Chat d = chat().thenLegacyText(prefix);
         boolean first = true;
         int previous = 0;
 
@@ -167,6 +170,58 @@ public class ChatUtil {
 
 
 
+    /**
+     * Do like {@link String#join(CharSequence, Iterable)}, but for components, and the last separator is different from
+     * the others. It is useful when enumerating things in a sentence, for instance :
+     * <code>"a thing<u>, </u>a thing<u> and </u>a thing"</code>
+     * (the coma being the usual separator, and {@code " and "} being the final separator).
+     * @param regularSeparator the separator used everywhere except between the two last components to join.
+     * @param finalSeparator the separator used between the two last components to join.
+     * @param elements the components to join.
+     * @return a new {@link Chat} instance with all the provided {@code component} joined using the separators.
+     */
+    public static FormatableChat joinGrammatically(ComponentLike regularSeparator, ComponentLike finalSeparator, List<? extends ComponentLike> elements) {
+        int size = elements == null ? 0 : elements.size();
+        int last = size - 1;
+        return switch (size) {
+            case 0, 1, 2 -> join(finalSeparator, elements);
+            default -> (FormatableChat) join(regularSeparator, elements.subList(0, last))
+                    .then(finalSeparator)
+                    .then(elements.get(last));
+        };
+    }
+
+
+
+
+
+
+    /**
+     * Do like {@link String#join(CharSequence, Iterable)}, but for components.
+     * @param separator the separator used everywhere except between the two last components to join.
+     * @param elements the components to join.
+     * @return a new {@link Chat} instance with all the provided {@code component} joined using the separators.
+     */
+    public static FormatableChat join(ComponentLike separator, Iterable<? extends ComponentLike> elements) {
+        FormatableChat c = chat();
+        if (elements == null)
+            return c;
+        boolean first = true;
+        for (ComponentLike el : elements) {
+            if (!first) {
+                c.then(separator);
+            }
+            c.then(el);
+            first = false;
+        }
+        return c;
+    }
+
+
+
+
+
+
 
 
 
@@ -210,8 +265,8 @@ public class ChatUtil {
             count += strWidth(((TextComponent)component).content(), console, actuallyBold);
         }
         else if (component instanceof TranslatableComponent) {
-            for (Component c : ((TranslatableComponent)component).args())
-                count += componentWidth(c, console, actuallyBold);
+            for (TranslationArgument c : ((TranslatableComponent)component).arguments())
+                count += componentWidth(c.asComponent(), console, actuallyBold);
         }
 
         for (Component c : component.children())
@@ -295,7 +350,7 @@ public class ChatUtil {
 
         do {
             char c = legacyText.charAt(index);
-            if (c == ChatColor.COLOR_CHAR && index < legacyText.length() - 1) {
+            if (c == LegacyComponentSerializer.SECTION_CHAR && index < legacyText.length() - 1) {
                 currentWord.append(c);
                 c = legacyText.charAt(++index);
                 currentWord.append(c);
@@ -377,12 +432,12 @@ public class ChatUtil {
      *                alignment, much harder).
      * @return a List containing each rendered line of the table.
      */
-    public static List<Component> renderTable(List<List<Chat>> data, String space, boolean console) {
+    public static List<Component> renderTable(List<List<ComponentLike>> data, String space, boolean console) {
         List<List<Component>> compRows = new ArrayList<>(data.size());
-        for (List<Chat> row : data) {
+        for (List<ComponentLike> row : data) {
             List<Component> compRow = new ArrayList<>(row.size());
-            for (Chat c : row) {
-                compRow.add(c.getAdv());
+            for (ComponentLike c : row) {
+                compRow.add(c.asComponent());
             }
             compRows.add(compRow);
         }
@@ -416,7 +471,7 @@ public class ChatUtil {
         // create the lines with appropriate spacing
         List<Component> spacedRows = new ArrayList<>(data.size());
         for (List<Component> row : data) {
-            Chat spacedRow = Chat.chat();
+            Chat spacedRow = chat();
             for (int i = 0; i < row.size() - 1; i++) {
                 int w = componentWidth(row.get(i), console);
                 int padding = nbPixelPerColumn.get(i) - w;
@@ -425,8 +480,8 @@ public class ChatUtil {
                 spacedRow.thenText(space);
             }
             if (!row.isEmpty())
-                spacedRow.then(row.get(row.size() - 1));
-            spacedRows.add(spacedRow.getAdv());
+                spacedRow.then(row.getLast());
+            spacedRows.add(spacedRow.get());
         }
 
         return spacedRows;
@@ -448,14 +503,14 @@ public class ChatUtil {
      */
     public static Component customWidthSpace(int width, boolean console) {
         if (console)
-            return Chat.text(" ".repeat(width)).getAdv();
+            return Chat.text(" ".repeat(width)).get();
         return switch (width) {
             case 0, 1 -> Component.empty();
-            case 2 -> Chat.text(".").black().getAdv();
-            case 3 -> Chat.text("`").black().getAdv();
-            case 6 -> Chat.text(". ").black().getAdv();
-            case 7 -> Chat.text("` ").black().getAdv();
-            case 11 -> Chat.text("`  ").black().getAdv();
+            case 2 -> Chat.text(".").black().get();
+            case 3 -> Chat.text("`").black().get();
+            case 6 -> Chat.text(". ").black().get();
+            case 7 -> Chat.text("` ").black().get();
+            case 11 -> Chat.text("`  ").black().get();
             default -> {
                 int nbSpace = width / 4;
                 int nbBold = width % 4;
@@ -464,13 +519,13 @@ public class ChatUtil {
                     if (nbBold > 0) {
                         yield Chat.text(" ".repeat(nbNotBold)).bold(false)
                                 .then(Chat.text(" ".repeat(nbBold)).bold(true))
-                                .getAdv();
+                                .get();
                     }
                     else
-                        yield Chat.text(" ".repeat(nbNotBold)).bold(false).getAdv();
+                        yield Chat.text(" ".repeat(nbNotBold)).bold(false).get();
                 }
                 else if (nbBold > 0) {
-                    yield Chat.text(" ".repeat(nbBold)).bold(true).getAdv();
+                    yield Chat.text(" ".repeat(nbBold)).bold(true).get();
                 }
                 throw new IllegalStateException("Should not be here (width=" + width + "; nbSpace=" + nbSpace + "; nbBold=" + nbBold + "; nbNotBold=" + nbNotBold + ")");
             }
@@ -602,5 +657,6 @@ public class ChatUtil {
         return str;
     }
 
+    private ChatUtil() {}
 
 }

pandalib-chat/src/main/java/fr/pandacube/lib/chat/LegacyChatFormat.java

@@ -0,0 +1,230 @@
+package fr.pandacube.lib.chat;
+
+import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.format.TextDecoration;
+import net.kyori.adventure.text.format.TextFormat;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+import net.kyori.adventure.text.serializer.legacy.LegacyFormat;
+
+import java.util.Arrays;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Convenient enum to uses legacy format while keeping compatibility with modern chat format and API (Adventure, ...)
+ */
+public enum LegacyChatFormat {
+
+    /**
+     * Black (0) color format code.
+     */
+    BLACK('0'),
+    /**
+     * Dark blue (1) color format code.
+     */
+    DARK_BLUE('1'),
+    /**
+     * Dark green (2) color format code.
+     */
+    DARK_GREEN('2'),
+    /**
+     * Dark aqua (3) color format code.
+     */
+    DARK_AQUA('3'),
+    /**
+     * Dark red (4) color format code.
+     */
+    DARK_RED('4'),
+    /**
+     * Dark purple (5) color format code.
+     */
+    DARK_PURPLE('5'),
+    /**
+     * Gold (6) color format code.
+     */
+    GOLD('6'),
+    /**
+     * Gray (7) color format code.
+     */
+    GRAY('7'),
+    /**
+     * Dark gray (8) color format code.
+     */
+    DARK_GRAY('8'),
+    /**
+     * Blue (9) color format code.
+     */
+    BLUE('9'),
+    /**
+     * Green (A) color format code.
+     */
+    GREEN('a'),
+    /**
+     * Aqua (B) color format code.
+     */
+    AQUA('b'),
+    /**
+     * Red (C) color format code.
+     */
+    RED('c'),
+    /**
+     * Light purple (D) color format code.
+     */
+    LIGHT_PURPLE('d'),
+    /**
+     * Yellow (E) color format code.
+     */
+    YELLOW('e'),
+    /**
+     * White (F) color format code.
+     */
+    WHITE('f'),
+    /**
+     * Obfuscated (K) decoration format code.
+     */
+    OBFUSCATED('k'),
+    /**
+     * Bold (L) decoration format code.
+     */
+    BOLD('l'),
+    /**
+     * Strikethrough (M) decoration format code.
+     */
+    STRIKETHROUGH('m'),
+    /**
+     * Underlined (N) decoration format code.
+     */
+    UNDERLINED('n'),
+    /**
+     * Italic (O) decoration format code.
+     */
+    ITALIC('o'),
+    /**
+     * Reset (R) format code.
+     */
+    RESET('r');
+
+
+    /**
+     * The character used by Minecraft for legacy chat format.
+     */
+    public static final char COLOR_CHAR = LegacyComponentSerializer.SECTION_CHAR;
+
+    /** {@link #COLOR_CHAR} but as a String! */
+    public static final String COLOR_STR_PREFIX = Character.toString(COLOR_CHAR);
+
+    private static final Map<Character, LegacyChatFormat> BY_CHAR;
+    private static final Map<TextFormat, LegacyChatFormat> BY_FORMAT;
+    private static final Map<LegacyFormat, LegacyChatFormat> BY_LEGACY;
+
+
+    /**
+     * Gets the {@link LegacyChatFormat} from the provided chat color code.
+     * @param code the character code from [0-9A-Fa-fK-Ok-oRr].
+     * @return the {@link LegacyChatFormat} related to the provided code.
+     */
+    public static LegacyChatFormat of(char code) {
+        return BY_CHAR.get(Character.toLowerCase(code));
+    }
+
+    /**
+     * Gets the {@link LegacyChatFormat} from the provided {@link TextFormat} instance.
+     * @param format the {@link TextFormat} instance.
+     * @return the {@link LegacyChatFormat} related to the provided format.
+     */
+    public static LegacyChatFormat of(TextFormat format) {
+        LegacyChatFormat colorOrDecoration = BY_FORMAT.get(format);
+        if (colorOrDecoration != null)
+            return colorOrDecoration;
+        if (format.getClass().getSimpleName().equals("Reset")) // an internal class of legacy serializer library
+            return RESET;
+        throw new IllegalArgumentException("Unsupported format of type " + format.getClass());
+    }
+
+    /**
+     * Gets the {@link LegacyChatFormat} from the provided {@link LegacyFormat} instance.
+     * @param advLegacy the {@link LegacyFormat} instance.
+     * @return the {@link LegacyChatFormat} related to the provided format.
+     */
+    public static LegacyChatFormat of(LegacyFormat advLegacy) {
+        return BY_LEGACY.get(advLegacy);
+    }
+
+
+    /**
+     * The format code of this chat format.
+     */
+    public final char code;
+
+    /**
+     * The Adventure legacy format instance related to this chat format.
+     */
+    public final LegacyFormat advLegacyFormat;
+
+    LegacyChatFormat(char code) {
+        this.code = code;
+        advLegacyFormat = LegacyComponentSerializer.parseChar(code);
+    }
+
+    /**
+     * Gets the related {@link TextColor}, or null if it's not a color.
+     * @return the related {@link TextColor}, or null if it's not a color.
+     */
+    public TextColor getTextColor() {
+        return advLegacyFormat.color();
+    }
+
+    /**
+     * Tells if this format is a color.
+     * @return true if this format is a color, false otherwise.
+     */
+    public boolean isColor() {
+        return getTextColor() != null;
+    }
+
+    /**
+     * Gets the related {@link TextDecoration}, or null if it's not a decoration.
+     * @return the related {@link TextDecoration}, or null if it's not a decoration.
+     */
+    public TextDecoration getTextDecoration() {
+        return advLegacyFormat.decoration();
+    }
+
+    /**
+     * Tells if this format is a decoration (bold, italic, ...).
+     * @return true if this format is a decoration, false otherwise.
+     */
+    public boolean isDecoration() {
+        return getTextDecoration() != null;
+    }
+
+    /**
+     * Tells if this format is the reset.
+     * @return true if this format is the reset, false otherwise.
+     */
+    public boolean isReset() {
+        return this == RESET;
+    }
+
+    @Override
+    public String toString() {
+        return COLOR_STR_PREFIX + code;
+    }
+
+
+
+    static {
+        BY_CHAR = Arrays.stream(values()).sequential()
+                .collect(Collectors.toMap(e -> e.code, e -> e, (e1, e2) -> e1, LinkedHashMap::new));
+        BY_FORMAT = Arrays.stream(values()).sequential()
+                .filter(e -> e.isColor() || e.isDecoration())
+                .collect(Collectors.toMap(e -> {
+                    if (e.isColor())
+                        return e.getTextColor();
+                    return e.getTextDecoration();
+                }, e -> e, (e1, e2) -> e1, LinkedHashMap::new));
+        BY_LEGACY = Arrays.stream(values()).sequential()
+                .collect(Collectors.toMap(e -> e.advLegacyFormat, e -> e, (e1, e2) -> e1, LinkedHashMap::new));
+    }
+}

pandalib-cli/pom.xml

@@ -15,42 +15,36 @@
     <packaging>jar</packaging>
     
 	<repositories>
-		<repository>
-			<id>minecraft-libraries</id>
-			<name>Minecraft Libraries</name>
-			<url>https://libraries.minecraft.net</url>
-		</repository>
         <repository>
             <id>bungeecord-repo</id>
             <url>https://oss.sonatype.org/content/repositories/snapshots</url>
         </repository>
     </repositories>
 
-  <dependencies>
-      <dependency>
-          <groupId>fr.pandacube.lib</groupId>
-          <artifactId>pandalib-core</artifactId>
-          <version>${project.version}</version>
-      </dependency>
-      <dependency>
-          <groupId>fr.pandacube.lib</groupId>
-          <artifactId>pandalib-reflect</artifactId>
-          <version>${project.version}</version>
-      </dependency>
-      <dependency>
-          <groupId>fr.pandacube.lib</groupId>
-          <artifactId>pandalib-commands</artifactId>
-          <version>${project.version}</version>
-      </dependency>
-
+    <dependencies>
         <dependency>
-            <groupId>net.md-5</groupId>
-            <artifactId>bungeecord-log</artifactId>
-            <version>${bungeecord.version}</version>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-reflect</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-commands</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-config</artifactId>
+            <version>${project.version}</version>
         </dependency>
         <dependency>
             <groupId>net.md-5</groupId>
-            <artifactId>bungeecord-config</artifactId>
+            <artifactId>bungeecord-log</artifactId>
             <version>${bungeecord.version}</version>
         </dependency>
 

pandalib-cli/src/main/java/fr/pandacube/lib/cli/CLI.java

@@ -8,7 +8,7 @@ import fr.pandacube.lib.cli.log.CLILogger;
 import jline.console.ConsoleReader;
 import org.fusesource.jansi.AnsiConsole;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Class to handle general standard IO operation for a CLI application. It uses Jline’s {@link ConsoleReader} for the

pandalib-cli/src/main/java/fr/pandacube/lib/cli/CLIApplication.java

@@ -2,7 +2,8 @@ package fr.pandacube.lib.cli;
 
 import fr.pandacube.lib.cli.commands.CommandAdmin;
 import fr.pandacube.lib.cli.commands.CommandStop;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.cli.log.CLILogger;
+import fr.pandacube.lib.util.log.Log;
 
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Logger;
@@ -14,17 +15,23 @@ public abstract class CLIApplication {
 
     private static CLIApplication instance;
 
+    /**
+     * Returns the current application instance.
+     * @return the current application instance.
+     */
     public static CLIApplication getInstance() {
         return instance;
     }
 
 
-
-
-
-
+    /**
+     * The instance of {@link CLI} for this application.
+     */
     public final CLI cli;
 
+    /**
+     * Creates a new application instance.
+     */
     protected CLIApplication() {
         instance = this;
         CLI tmpCLI = null;
@@ -46,7 +53,7 @@ public abstract class CLIApplication {
             new CommandAdmin();
             new CommandStop();
 
-            Runtime.getRuntime().addShutdownHook(new Thread(this::end));
+            Runtime.getRuntime().addShutdownHook(shutdownThread);
 
             cli.start(); // actually starts the CLI thread
 
@@ -56,48 +63,74 @@ public abstract class CLIApplication {
         }
     }
 
+    /**
+     * Returns the application's {@link Logger}.
+     * @return the application's {@link Logger}.
+     */
     public Logger getLogger() {
         return cli.getLogger();
     }
 
 
-    private final Object stopLock = new Object();
+    private final Thread shutdownThread = new Thread(this::stop);
+
     private final AtomicBoolean stopping = new AtomicBoolean(false);
 
-    @SuppressWarnings("finally")
+    /**
+     * Stops this application.
+     */
     public final void stop() {
-        synchronized (stopLock) {
-            synchronized (stopping) {
-                if (stopping.get())
-                    return;
-                stopping.set(true);
-            }
-            Log.info("Stopping " + getName() + " version " + getClass().getPackage().getImplementationVersion());
-            try {
-                end();
-            } catch (Throwable t) {
-                Log.severe("Error stopping application " + getName() + " version " + getClass().getPackage().getImplementationVersion(), t);
-            } finally {
-                Log.info("Bye bye.");
-                System.exit(0);
-            }
+        synchronized (stopping) {
+            if (stopping.get())
+                return;
+            stopping.set(true);
         }
+        Log.info("Stopping " + getName() + " version " + getClass().getPackage().getImplementationVersion());
+        try {
+            end();
+        } catch (Throwable t) {
+            Log.severe("Error stopping application " + getName() + " version " + getClass().getPackage().getImplementationVersion(), t);
+        } finally {
+            Log.info("Bye bye.");
 
+            CLILogger.actuallyResetLogManager();
+            if (!Thread.currentThread().equals(shutdownThread))
+                System.exit(0);
+        }
     }
 
+    /**
+     * Tells if this application is currently stopping, that is the {@link #stop()} method has been called.
+     * @return true if the application is stopping, false otherwise.
+     */
     public boolean isStopping() {
         return stopping.get();
     }
 
 
-
-
+    /**
+     * Gets the name of this application.
+     * @return the name of this application.
+     */
     public abstract String getName();
 
+    /**
+     * Method to override to initialize stuff in this application.
+     * This method is called on instanciation of this Application.
+     * @throws Exception If an exception is thrown, the application will not start.
+     */
     protected abstract void start() throws Exception;
 
+    /**
+     * Method to override to reload specific stuff in this application.
+     * This method is called by using the command {@code admin reload}.
+     */
     public abstract void reload();
 
+    /**
+     * Method to override to execute stuff when this application stops.
+     * This method is called once before this application terminates, possibly from a shutdown hook Thread.
+     */
     protected abstract void end();
 
 

pandalib-cli/src/main/java/fr/pandacube/lib/cli/commands/CLIBrigadierDispatcher.java

@@ -25,6 +25,9 @@ public class CLIBrigadierDispatcher extends BrigadierDispatcher<CLICommandSender
 	public static final CLICommandSender CLI_CONSOLE_COMMAND_SENDER = new CLIConsoleCommandSender();
 
 
+	private CLIBrigadierDispatcher() {}
+
+
 	/**
 	 * Executes the provided command as the console.
 	 * @param commandWithoutSlash the command, without the eventual slash at the beginning.

pandalib-cli/src/main/java/fr/pandacube/lib/cli/commands/CLIConsoleCommandSender.java

@@ -1,7 +1,7 @@
 package fr.pandacube.lib.cli.commands;
 
 import fr.pandacube.lib.chat.Chat;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import net.kyori.adventure.audience.MessageType;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
@@ -11,6 +11,12 @@ import org.jetbrains.annotations.NotNull;
  * The console command sender.
  */
 public class CLIConsoleCommandSender implements CLICommandSender {
+
+    /**
+     * Creates a new console command sender.
+     */
+    protected CLIConsoleCommandSender() {}
+
     public String getName() {
         return "Console";
     }

pandalib-cli/src/main/java/fr/pandacube/lib/cli/commands/CommandAdmin.java

@@ -17,8 +17,8 @@ import fr.pandacube.lib.chat.Chat;
 import fr.pandacube.lib.chat.Chat.FormatableChat;
 import fr.pandacube.lib.chat.ChatTreeNode;
 import fr.pandacube.lib.cli.CLIApplication;
-import fr.pandacube.lib.util.Log;
-import net.md_5.bungee.api.chat.BaseComponent;
+import fr.pandacube.lib.util.log.Log;
+import net.kyori.adventure.text.Component;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -31,8 +31,16 @@ import static fr.pandacube.lib.chat.ChatStatic.failureText;
 import static fr.pandacube.lib.chat.ChatStatic.successText;
 import static fr.pandacube.lib.chat.ChatStatic.text;
 
+/**
+ * The {@code admin} command for a {@link CLIApplication}.
+ */
 public class CommandAdmin extends CLIBrigadierCommand {
 
+	/**
+	 * Initializes the admin command.
+	 */
+	public CommandAdmin() {}
+
 	@Override
 	protected LiteralArgumentBuilder<CLICommandSender> buildCommand() {
 		return literal("admin")
@@ -184,7 +192,7 @@ public class CommandAdmin extends CLIBrigadierCommand {
 	
 	
 	
-	private BaseComponent displayCurrentNode(CommandNode<CLICommandSender> node, boolean redirectTarget, CLICommandSender sender) {
+	private Component displayCurrentNode(CommandNode<CLICommandSender> node, boolean redirectTarget, CLICommandSender sender) {
 		if (node == null)
 			throw new IllegalArgumentException("node must not be null");
 		FormatableChat d;

pandalib-cli/src/main/java/fr/pandacube/lib/cli/commands/CommandStop.java

@@ -5,10 +5,15 @@ import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import fr.pandacube.lib.cli.CLIApplication;
 
 /**
- * /stop (/end) command.
+ * the {@code stop} (or {@code end}) command for a {@link CLIApplication}.
  */
 public class CommandStop extends CLIBrigadierCommand {
 
+	/**
+	 * Initializes the admin command.
+	 */
+	public CommandStop() {}
+
 	@Override
 	protected LiteralArgumentBuilder<CLICommandSender> buildCommand() {
 		return literal("stop")

pandalib-cli/src/main/java/fr/pandacube/lib/cli/log/CLILogger.java

@@ -1,9 +1,10 @@
 package fr.pandacube.lib.cli.log;
 
 import fr.pandacube.lib.cli.CLI;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.cli.CLIApplication;
 import fr.pandacube.lib.util.ThrowableUtil;
-import fr.pandacube.lib.util.logs.DailyLogRotateFileHandler;
+import fr.pandacube.lib.util.log.DailyLogRotateFileHandler;
+import fr.pandacube.lib.util.log.Log;
 import net.md_5.bungee.log.ColouredWriter;
 import net.md_5.bungee.log.ConciseFormatter;
 
@@ -13,6 +14,7 @@ import java.io.PrintStream;
 import java.util.Scanner;
 import java.util.logging.Handler;
 import java.util.logging.Level;
+import java.util.logging.LogManager;
 import java.util.logging.Logger;
 
 /**
@@ -20,8 +22,31 @@ import java.util.logging.Logger;
  */
 public class CLILogger {
 
+	static {
+		System.setProperty("java.util.logging.manager", ShutdownHookDelayerLogManager.class.getName());
+	}
+
 	private static Logger logger = null;
 
+
+	private static class ShutdownHookDelayerLogManager extends LogManager {
+		static ShutdownHookDelayerLogManager instance;
+		public ShutdownHookDelayerLogManager() { instance = this; }
+		@Override public void reset() { /* don't reset yet. */ }
+		private void actuallyReset() { super.reset(); }
+	}
+
+	/**
+	 * Tells the LogManager to actually reset.
+	 * <p>
+	 * This method is called by the shutdown hook of {@link CLIApplication}, because the {@link CLILogger} uses a custom
+	 * {@link LogManager} that bypass the reset process during the shutdown of the process.
+	 */
+	public static void actuallyResetLogManager() {
+		ShutdownHookDelayerLogManager.instance.actuallyReset();
+	}
+
+
 	/**
 	 * Initialize and return the logger for this application.
 	 * @param cli the CLI instance to use
@@ -46,6 +71,8 @@ public class CLILogger {
 	        System.setOut(newRedirector(logger, Level.INFO));
 
 			Log.setLogger(logger);
+
+			Thread.setDefaultUncaughtExceptionHandler((t, e) -> Log.severe("Uncaught Exception in thread " + t.getName(), e));
 		}
 		return logger;
 	}
@@ -70,5 +97,7 @@ public class CLILogger {
 		t.start();
 		return ps;
 	}
+
+	private CLILogger() {}
 	
 }

pandalib-commands/src/main/java/fr/pandacube/lib/commands/BadCommandUsage.java

@@ -0,0 +1,45 @@
+package fr.pandacube.lib.commands;
+
+import java.util.logging.Logger;
+
+/**
+ * Throw an instance of this exception to indicate to the plugin command handler that the user has missused the command.
+ * The message, if provided, must indicate the reason of the mussusage of the command. It will be displayed on the
+ * screen with eventual indications of how to use the command (help command for example).
+ * If a {@link Throwable} cause is provided, it will be relayed to the plugin {@link Logger}.
+ * 
+ */
+public class BadCommandUsage extends RuntimeException {
+
+	/**
+	 * Constructs a new runtime exception with no message or cause.
+	 */
+	public BadCommandUsage() {
+		super();
+	}
+
+	/**
+	 * Constructs a new runtime exception with the specified cause.
+	 * @param cause the cause.
+	 */
+	public BadCommandUsage(Throwable cause) {
+		super(cause);
+	}
+
+	/**
+	 * Constructs a new runtime exception with the specified message.
+	 * @param message the message.
+	 */
+	public BadCommandUsage(String message) {
+		super(message);
+	}
+
+	/**
+	 * Constructs a new runtime exception with the specified message and cause.
+	 * @param message the message.
+	 * @param cause the cause.
+	 */
+	public BadCommandUsage(String message, Throwable cause) {
+		super(message, cause);
+	}
+}

pandalib-commands/src/main/java/fr/pandacube/lib/commands/BrigadierCommand.java

@@ -10,9 +10,10 @@ import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import com.mojang.brigadier.exceptions.SimpleCommandExceptionType;
 import com.mojang.brigadier.suggestion.SuggestionProvider;
 import com.mojang.brigadier.tree.LiteralCommandNode;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.util.Arrays;
+import java.util.List;
 import java.util.function.Function;
 import java.util.function.Predicate;
 
@@ -24,6 +25,11 @@ import java.util.function.Predicate;
  */
 public abstract class BrigadierCommand<S> {
 
+    /**
+     * Creates a Brigadier command.
+     */
+    public BrigadierCommand() {}
+
 
     /**
      * Returns a builder for this command.
@@ -235,9 +241,12 @@ public abstract class BrigadierCommand<S> {
                 args = Arrays.copyOf(args, args.length + 1);
                 args[args.length - 1] = message.substring(tokenStartPos);
 
-                for (String s : suggestions.getSuggestions(sender, args.length - 1, args[args.length - 1], args)) {
-                    if (s != null)
-                        builder.suggest(s);
+                List<String> wrappedResult = suggestions.getSuggestions(sender, args.length - 1, args[args.length - 1], args);
+                if (wrappedResult != null) {
+                    for (String s : wrappedResult) {
+                        if (s != null)
+                            builder.suggest(s);
+                    }
                 }
             } catch (Throwable e) {
                 Log.severe("Error while tab-completing '" + message + "' for " + sender, e);

pandalib-commands/src/main/java/fr/pandacube/lib/commands/BrigadierDispatcher.java

@@ -6,7 +6,7 @@ import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import com.mojang.brigadier.suggestion.Suggestions;
 import com.mojang.brigadier.tree.LiteralCommandNode;
 import fr.pandacube.lib.chat.Chat;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import net.kyori.adventure.text.ComponentLike;
 
 import java.util.concurrent.CompletableFuture;
@@ -21,6 +21,11 @@ public abstract class BrigadierDispatcher<S> {
 
     private final CommandDispatcher<S> dispatcher = new CommandDispatcher<>();
 
+    /**
+     * Creates a new Dispatcher instance.
+     */
+    public BrigadierDispatcher() {}
+
 
     /**
      * Registers the provided command node into this dispatcher.

pandalib-commands/src/main/java/fr/pandacube/lib/commands/BrigadierSuggestionsUtil.java

@@ -140,4 +140,8 @@ public class BrigadierSuggestionsUtil {
     }
 
 
+
+    private BrigadierSuggestionsUtil() {}
+
+
 }

pandalib-config/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>pandalib-parent</artifactId>
+        <groupId>fr.pandacube.lib</groupId>
+        <version>1.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>pandalib-config</artifactId>
+    <packaging>jar</packaging>
+
+    <repositories>
+        <repository>
+            <id>bungeecord-repo</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>net.md-5</groupId>
+            <artifactId>bungeecord-config</artifactId>
+            <version>${bungeecord.version}</version>
+        </dependency>
+
+    </dependencies>
+
+</project>

pandalib-config/src/main/java/fr/pandacube/lib/config/AbstractConfig.java

@@ -1,7 +1,4 @@
-package fr.pandacube.lib.core.config;
-
-import fr.pandacube.lib.chat.ChatColorUtil;
-import fr.pandacube.lib.util.Log;
+package fr.pandacube.lib.config;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -56,7 +53,7 @@ public abstract class AbstractConfig {
 		while ((line = reader.readLine()) != null) {
 			String trimmedLine = line.trim();
 			
-			if (ignoreEmpty && trimmedLine.equals(""))
+			if (ignoreEmpty && trimmedLine.isEmpty())
 				continue;
 			
 			if (ignoreHashtagComment && trimmedLine.startsWith("#"))
@@ -114,25 +111,6 @@ public abstract class AbstractConfig {
 	}
 
 
-	/**
-	 * Utility method to that translate the {@code '&'} formatted string to the legacy format.
-	 * @param string the string to convert.
-	 * @return a legacy formatted string (using {@code '§'}).
-	 */
-	public static String getTranslatedColorCode(String string) {
-		return ChatColorUtil.translateAlternateColorCodes('&', string);
-	}
-
-
-	/**
-	 * Logs the message as a warning into console, prefixed with the context of this config.
-	 * @param message the message to log.
-	 */
-	protected void warning(String message) {
-		Log.warning("Error in configuration '"+configFile.getName()+"': " + message);
-	}
-
-
 	/**
 	 * The type of config.
 	 */

pandalib-config/src/main/java/fr/pandacube/lib/config/AbstractConfigManager.java

@@ -1,4 +1,4 @@
-package fr.pandacube.lib.core.config;
+package fr.pandacube.lib.config;
 
 import java.io.File;
 import java.io.IOException;

pandalib-core/pom.xml

@@ -37,6 +37,12 @@
             <version>${project.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+
         <!-- Cron expression interpreter -->
         <dependency>
             <groupId>ch.eitchnet</groupId>
@@ -50,7 +56,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.5.2</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -104,6 +110,7 @@
                     <outputDirectory>${project.basedir}/src/main/resources/fr/pandacube/lib/core/mc_version</outputDirectory>
                     <outputFileName>mcversion.json</outputFileName>
                     <skipCache>true</skipCache>
+                    <overwrite>true</overwrite>
                 </configuration>
             </plugin>
         </plugins>

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/BackupCleaner.java

@@ -1,8 +1,8 @@
 package fr.pandacube.lib.core.backup;
 
 import fr.pandacube.lib.chat.Chat;
-import fr.pandacube.lib.util.Log;
-import net.md_5.bungee.api.ChatColor;
+import fr.pandacube.lib.chat.LegacyChatFormat;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.time.LocalDateTime;
@@ -70,6 +70,11 @@ public abstract class BackupCleaner implements UnaryOperator<TreeSet<LocalDateTi
         };
     }
 
+    /**
+     * Create a backup cleaner.
+     */
+    public BackupCleaner() {}
+
 
     /**
      * Creates a new {@link BackupCleaner} that keeps the archives kept by this {@link BackupCleaner} or by the provided
@@ -102,14 +107,14 @@ public abstract class BackupCleaner implements UnaryOperator<TreeSet<LocalDateTi
         if (files == null)
             return;
 
-        Log.info("[Backup] Cleaning up backup directory " + ChatColor.GRAY + compressDisplayName + ChatColor.RESET + "...");
+        Log.info("[Backup] Cleaning up backup directory " + LegacyChatFormat.GRAY + compressDisplayName + LegacyChatFormat.RESET + "...");
 
         TreeMap<LocalDateTime, File> datedFiles = new TreeMap<>();
 
         for (String filename : files) {
             File file = new File(archiveDir, filename);
             if (!filename.matches("\\d{8}-\\d{6}\\.zip")) {
-                Log.warning("[Backup] " + ChatColor.GRAY + compressDisplayName + ChatColor.RESET + " Invalid file in backup directory: " + filename);
+                Log.warning("[Backup] " + LegacyChatFormat.GRAY + compressDisplayName + LegacyChatFormat.RESET + " Invalid file in backup directory: " + filename);
                 continue;
             }
 
@@ -118,7 +123,7 @@ public abstract class BackupCleaner implements UnaryOperator<TreeSet<LocalDateTi
             try {
                 ldt = LocalDateTime.parse(dateTimeStr, BackupProcess.dateFileNameFormatter);
             } catch (DateTimeParseException e) {
-                Log.warning("[Backup] " + ChatColor.GRAY + compressDisplayName + ChatColor.RESET + " Unable to parse file name to a date-time: " + filename, e);
+                Log.warning("[Backup] " + LegacyChatFormat.GRAY + compressDisplayName + LegacyChatFormat.RESET + " Unable to parse file name to a date-time: " + filename, e);
                 continue;
             }
 
@@ -151,7 +156,7 @@ public abstract class BackupCleaner implements UnaryOperator<TreeSet<LocalDateTi
         if (testOnly || oneDeleted)
             Log.warning(c.getLegacyText());
 
-        Log.info("[Backup] Backup directory " + ChatColor.GRAY + compressDisplayName + ChatColor.RESET + " cleaned.");
+        Log.info("[Backup] Backup directory " + LegacyChatFormat.GRAY + compressDisplayName + LegacyChatFormat.RESET + " cleaned.");
     }
 
 

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/BackupManager.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.core.backup;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.time.ZonedDateTime;
@@ -66,7 +66,13 @@ public class BackupManager extends TimerTask {
         return backupDirectory;
     }
 
-
+    /**
+     * Tells if a backup is currently running.
+     * @return true if a backup is running, false otherwise.
+     */
+    public synchronized boolean isBackupRunning() {
+        return runningBackup.get() != null;
+    }
 
 
     public synchronized void run() {
@@ -90,11 +96,12 @@ public class BackupManager extends TimerTask {
      * Disables this backup manager, canceling scheduled backups.
      * It will wait for a currently running backup to finish before returning.
      */
+    @SuppressWarnings("BusyWait")
     public synchronized void onDisable() {
 
         schedulerTimer.cancel();
 
-        if (runningBackup.get() != null) {
+        if (isBackupRunning()) {
             Log.warning("[Backup] Waiting after the end of a backup...");
             BackupProcess tmp;
             while ((tmp = runningBackup.get()) != null) {

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/BackupProcess.java

@@ -1,10 +1,10 @@
 package fr.pandacube.lib.core.backup;
 
 import fc.cron.CronExpression;
+import fr.pandacube.lib.chat.LegacyChatFormat;
 import fr.pandacube.lib.core.cron.CronScheduler;
 import fr.pandacube.lib.util.FileUtils;
-import fr.pandacube.lib.util.Log;
-import net.md_5.bungee.api.ChatColor;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.text.DateFormat;
@@ -209,7 +209,7 @@ public abstract class BackupProcess implements Comparable<BackupProcess>, Runnab
             File sourceDir = getSourceDir();
 
             if (!sourceDir.exists()) {
-                Log.warning("[Backup] Unable to compress " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + ": source directory " + sourceDir + " doesn't exist");
+                Log.warning("[Backup] Unable to compress " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + ": source directory " + sourceDir + " doesn't exist");
                 return;
             }
 
@@ -219,7 +219,7 @@ public abstract class BackupProcess implements Comparable<BackupProcess>, Runnab
             onBackupStart();
 
             new Thread(() -> {
-                Log.info("[Backup] Starting for " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " ...");
+                Log.info("[Backup] Starting for " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " ...");
 
                 compressor = new ZipCompressor(sourceDir, target, 9, filter);
 
@@ -229,7 +229,7 @@ public abstract class BackupProcess implements Comparable<BackupProcess>, Runnab
 
                     success = true;
 
-                    Log.info("[Backup] Finished for " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET);
+                    Log.info("[Backup] Finished for " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET);
 
                     try {
                         BackupCleaner cleaner = getBackupCleaner();
@@ -267,7 +267,7 @@ public abstract class BackupProcess implements Comparable<BackupProcess>, Runnab
      * Logs the scheduling status of this backup process.
      */
     public void displayNextSchedule() {
-        Log.info("[Backup] " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " next backup on "
+        Log.info("[Backup] " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " next backup on "
                 + DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG).format(new Date(getNext())));
     }
 
@@ -297,7 +297,7 @@ public abstract class BackupProcess implements Comparable<BackupProcess>, Runnab
     public void logProgress() {
         if (compressor == null)
             return;
-        Log.info("[Backup] " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + ": " + compressor.getState().getLegacyText());
+        Log.info("[Backup] " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + ": " + compressor.getState().getLegacyText());
     }
 
 

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/Persist.java

@@ -3,7 +3,7 @@ package fr.pandacube.lib.core.backup;
 import com.google.gson.JsonParseException;
 import com.google.gson.reflect.TypeToken;
 import fr.pandacube.lib.core.json.Json;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.io.FileReader;

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/RotatedLogsBackupProcess.java

@@ -1,8 +1,8 @@
 package fr.pandacube.lib.core.backup;
 
 import com.google.common.io.Files;
-import fr.pandacube.lib.util.Log;
-import net.md_5.bungee.api.ChatColor;
+import fr.pandacube.lib.chat.LegacyChatFormat;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.io.IOException;
@@ -53,7 +53,7 @@ public class RotatedLogsBackupProcess extends BackupProcess {
         if (!getSourceDir().isDirectory())
             return;
 
-        Log.info("[Backup] Starting for " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " ...");
+        Log.info("[Backup] Starting for " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " ...");
 
         try {
             // wait a little after the log message above, in case the log file rotation has to be performed.
@@ -82,9 +82,9 @@ public class RotatedLogsBackupProcess extends BackupProcess {
 
             success = true;
 
-            Log.info("[Backup] Finished for " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET);
+            Log.info("[Backup] Finished for " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET);
         } catch (Exception e) {
-            Log.severe("[Backup] Failed for : " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET, e);
+            Log.severe("[Backup] Failed for : " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET, e);
         } finally {
             onBackupEnd(success);
 

pandalib-core/src/main/java/fr/pandacube/lib/core/backup/ZipCompressor.java

@@ -5,6 +5,7 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.ArrayList;
 import java.util.List;
@@ -117,7 +118,11 @@ public class ZipCompressor {
 			}
 			
 			for (Entry entry : entriesToCompress) {
-				entry.zip();
+				try {
+					entry.zip();
+				} catch (NoSuchFileException ignored) {
+					// file has been deleted since
+				}
 			}
 			
 			synchronized (stateLock) {

pandalib-core/src/main/java/fr/pandacube/lib/core/cron/CronScheduler.java

@@ -4,7 +4,7 @@ import com.google.gson.JsonParseException;
 import com.google.gson.reflect.TypeToken;
 import fc.cron.CronExpression;
 import fr.pandacube.lib.core.json.Json;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.File;
 import java.io.FileReader;
@@ -54,7 +54,7 @@ public class CronScheduler {
                 long now = System.currentTimeMillis();
 
                 if (!tasks.isEmpty()) {
-                    CronTask next = tasks.get(0);
+                    CronTask next = tasks.getFirst();
                     if (next.nextRun <= now) {
                         next.runAsync();
                         setLastRun(next.taskId, now);
@@ -224,5 +224,6 @@ public class CronScheduler {
                 .toEpochMilli();
     }
 
+    private CronScheduler() {}
 
 }

pandalib-core/src/main/java/fr/pandacube/lib/core/json/Json.java

@@ -2,11 +2,15 @@ package fr.pandacube.lib.core.json;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.JsonParseException;
+import com.google.gson.ToNumberStrategy;
 import com.google.gson.TypeAdapter;
 import com.google.gson.TypeAdapterFactory;
 import com.google.gson.reflect.TypeToken;
-import fr.pandacube.lib.util.Log;
+import com.google.gson.stream.MalformedJsonException;
+import fr.pandacube.lib.core.mc_version.MinecraftVersionList.MinecraftVersionListAdapter;
 
+import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Function;
@@ -17,6 +21,52 @@ import java.util.function.Function;
  */
 public class Json {
 
+	/**
+	 * Makes Gson deserialize numbers to Number subclasses the same way SnakeYAML does
+	 */
+	private static final ToNumberStrategy YAML_EQUIVALENT_NUMBER_STRATEGY = in -> {
+		String value = in.nextString();
+
+		// YAML uses Regex to resolve values as INT or FLOAT (see org.yaml.snakeyaml.resolver.Resolver), trying FLOAT first.
+		// We see in the regex that FLOAT MUST have a "." in the string, but INT must not, so we try that.
+		boolean isFloat = value.contains(".");
+
+		if (isFloat) {
+			// if float, will only parse to Double
+			//   (see org.yaml.snakeyaml.constructor.SafeConstructor.ConstructYamlFloat)
+			try {
+				Double d = Double.valueOf(value);
+				if ((d.isInfinite() || d.isNaN()) && !in.isLenient()) {
+					throw new MalformedJsonException("JSON forbids NaN and infinities: " + d + "; at path " + in.getPreviousPath());
+				}
+				return d;
+			} catch (NumberFormatException e) {
+				throw new JsonParseException("Cannot parse " + value + "; at path " + in.getPreviousPath(), e);
+			}
+		}
+		else {
+			// if integer, will try to parse int, then long, then BigDecimal
+			//   (see org.yaml.snakeyaml.constructor.SafeConstructor.ConstructYamlInt
+			//    then org.yaml.snakeyaml.constructor.SafeConstructor.createNumber)
+			try {
+				return Integer.valueOf(value);
+			} catch (NumberFormatException e) {
+				try {
+					return Long.valueOf(value);
+				} catch (NumberFormatException e2) {
+					try {
+						return new BigInteger(value);
+					} catch (NumberFormatException e3) {
+						throw new JsonParseException("Cannot parse " + value + "; at path " + in.getPreviousPath(), e3);
+					}
+				}
+			}
+		}
+	};
+
+
+
+
 	/**
 	 * {@link Gson} instance with {@link GsonBuilder#setLenient()} and support for Java records and additional
 	 * {@link TypeAdapterFactory} provided with {@link #registerTypeAdapterFactory(TypeAdapterFactory)}.
@@ -53,6 +103,8 @@ public class Json {
 	private static Gson build(Function<GsonBuilder, GsonBuilder> builderModifier) {
 		GsonBuilder base = new GsonBuilder()
 				.registerTypeAdapterFactory(new CustomAdapterFactory())
+				.disableHtmlEscaping()
+				.setObjectToNumberStrategy(YAML_EQUIVALENT_NUMBER_STRATEGY)
 				.setLenient();
 		return builderModifier.apply(base).create();
 	}
@@ -90,25 +142,27 @@ public class Json {
 
 
 
-	private static boolean hasGsonNativeRecordSupport() {
-		try {
-			com.google.gson.internal.reflect.ReflectionHelper.class.getDeclaredField("RECORD_HELPER");
-			return true;
-		} catch (NoClassDefFoundError e) {
-			Log.warning("Unable to check Gson supporting records. Assuming it does not. " + e);
-			return false;
-		} catch (NoSuchFieldException e) {
-			return false;
-		}
-	}
-
-
-
 	static {
-		if (!hasGsonNativeRecordSupport())
-			registerTypeAdapterFactory(RecordTypeAdapter.FACTORY);
 		registerTypeAdapterFactory(StackTraceElementAdapter.FACTORY);
 		registerTypeAdapterFactory(ThrowableAdapter.FACTORY);
+		registerTypeAdapterFactory(MinecraftVersionListAdapter.FACTORY);
 	}
 
+
+	/*public static void main(String[] args) {
+		TypeToken<Map<String, Object>> MAP_STR_OBJ_TYPE = new TypeToken<>() { };
+		Map<String, Object> map = gson.fromJson("{" +
+				"\"int\":34," +
+				"\"long\":3272567356876864," +
+				"\"bigint\":-737868677777837833757846576245765," +
+				"\"float\":34.0" +
+				"}", MAP_STR_OBJ_TYPE.getType());
+		for (String key : map.keySet()) {
+			Object v = map.get(key);
+			System.out.println(key + ": " + v + " (type " + v.getClass() + ")");
+		}
+	}*/
+
+	private Json() {}
+
 }

pandalib-core/src/main/java/fr/pandacube/lib/core/json/RecordTypeAdapter.java

@@ -1,88 +0,0 @@
-package fr.pandacube.lib.core.json;
-
-import com.google.gson.Gson;
-import com.google.gson.TypeAdapter;
-import com.google.gson.TypeAdapterFactory;
-import com.google.gson.reflect.TypeToken;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonToken;
-import com.google.gson.stream.JsonWriter;
-
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.RecordComponent;
-import java.util.HashMap;
-import java.util.Map;
-
-// from https://github.com/google/gson/issues/1794#issuecomment-812964421
-/* package */ class RecordTypeAdapter<T> extends TypeAdapter<T> {
-
-    public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
-        @Override
-        public <TT> TypeAdapter<TT> create(Gson gson, TypeToken<TT> type) {
-            @SuppressWarnings("unchecked")
-            Class<TT> clazz = (Class<TT>) type.getRawType();
-            if (!clazz.isRecord() || clazz == Record.class) {
-                return null;
-            }
-            return new RecordTypeAdapter<>(gson, this, type);
-        }
-    };
-
-
-    private final Gson gson;
-    private final TypeAdapterFactory factory;
-    private final TypeToken<T> type;
-
-    public RecordTypeAdapter(Gson gson, TypeAdapterFactory factory, TypeToken<T> type) {
-        this.gson = gson;
-        this.factory = factory;
-        this.type = type;
-    }
-
-    @Override
-    public void write(JsonWriter out, T value) throws IOException {
-        gson.getDelegateAdapter(factory, type).write(out, value);
-    }
-
-    @Override
-    public T read(JsonReader reader) throws IOException {
-        if (reader.peek() == JsonToken.NULL) {
-            reader.nextNull();
-            return null;
-        } else {
-            @SuppressWarnings("unchecked")
-            Class<T> clazz = (Class<T>) type.getRawType();
-
-            RecordComponent[] recordComponents = clazz.getRecordComponents();
-            Map<String, TypeToken<?>> typeMap = new HashMap<>();
-            for (RecordComponent recordComponent : recordComponents) {
-                typeMap.put(recordComponent.getName(), TypeToken.get(recordComponent.getGenericType()));
-            }
-            var argsMap = new HashMap<String, Object>();
-            reader.beginObject();
-            while (reader.hasNext()) {
-                String name = reader.nextName();
-                argsMap.put(name, gson.getAdapter(typeMap.get(name)).read(reader));
-            }
-            reader.endObject();
-
-            var argTypes = new Class<?>[recordComponents.length];
-            var args = new Object[recordComponents.length];
-            for (int i = 0; i < recordComponents.length; i++) {
-                argTypes[i] = recordComponents[i].getType();
-                args[i] = argsMap.get(recordComponents[i].getName());
-            }
-            Constructor<T> constructor;
-            try {
-                constructor = clazz.getDeclaredConstructor(argTypes);
-                constructor.setAccessible(true);
-                return constructor.newInstance(args);
-            } catch (NoSuchMethodException | InstantiationException | SecurityException | IllegalAccessException
-                     | IllegalArgumentException | InvocationTargetException e) {
-                throw new RuntimeException(e);
-            }
-        }
-    }
-}

pandalib-core/src/main/java/fr/pandacube/lib/core/json/ThrowableAdapter.java

@@ -10,7 +10,7 @@ import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
 import com.google.gson.TypeAdapterFactory;
 import com.google.gson.internal.bind.TreeTypeAdapter;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import fr.pandacube.lib.util.ThrowableUtil;
 
 import java.lang.reflect.Constructor;
@@ -30,6 +30,8 @@ public class ThrowableAdapter implements JsonSerializer<Throwable>, JsonDeserial
 
     /* package */ static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newTypeHierarchyFactory(Throwable.class, new ThrowableAdapter());
 
+    private ThrowableAdapter() {}
+
 
     @Override
     public Throwable deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {

pandalib-core/src/main/java/fr/pandacube/lib/core/json/TypeConverter.java

@@ -237,5 +237,8 @@ public class TypeConverter {
 		}
 		
 	}
+
+
+	private TypeConverter() {}
 	
 }

pandalib-core/src/main/java/fr/pandacube/lib/core/mc_version/MinecraftVersionList.java

@@ -1,22 +1,85 @@
 package fr.pandacube.lib.core.mc_version;
 
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.internal.bind.TreeTypeAdapter;
+import com.google.gson.reflect.TypeToken;
+
+import java.lang.reflect.Type;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.TreeMap;
 
+/**
+ * Record holding the data for {@link ProtocolVersion}, to facilitate serializing and deserializing.
+ * @param protocolOfVersion mapping from a version string to the corresponding protocol version number.
+ * @param versionsOfProtocol mapping from a protocol version number to a list of the supported MC versions.
+ */
 public record MinecraftVersionList(
         Map<String, Integer> protocolOfVersion,
         Map<Integer, List<String>> versionsOfProtocol
 ) {
+
+    /**
+     * Creates an empty {@link MinecraftVersionList}.
+     */
     public MinecraftVersionList() {
         this(new TreeMap<>(MinecraftVersionUtil::compareVersions), new TreeMap<>());
     }
 
+    /**
+     * Adds a new pair of version string and protocol version number.
+     * @param versionId the version string (e.g. "1.19.4").
+     * @param protocolVersion the protocol version number.
+     */
     public void add(String versionId, int protocolVersion) {
         protocolOfVersion.put(versionId, protocolVersion);
         List<String> versions = versionsOfProtocol.computeIfAbsent(protocolVersion, p -> new ArrayList<>());
         versions.add(versionId);
         versions.sort(MinecraftVersionUtil::compareVersions);
     }
+
+
+    /**
+     * Gson Adapter that ensure the data in {@link MinecraftVersionList} is sorted correctly when deserializing.
+     */
+    public static class MinecraftVersionListAdapter implements JsonSerializer<MinecraftVersionList>, JsonDeserializer<MinecraftVersionList> {
+        /**
+         * Gson adapter factory for {@link MinecraftVersionList}.
+         */
+        public static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newTypeHierarchyFactory(MinecraftVersionList.class, new MinecraftVersionListAdapter());
+
+        private static final TypeToken<Map<String, Integer>> MAP_STR_INT_TYPE = new TypeToken<>() { };
+        private static final TypeToken<Map<Integer, List<String>>> MAP_INT_LIST_STRING_TYPE = new TypeToken<>() { };
+
+        private MinecraftVersionListAdapter() {}
+
+        @Override
+        public MinecraftVersionList deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+            if (!(json instanceof JsonObject jsonObj))
+                throw new JsonParseException("Expected JsonObject, got " + json.getClass().getSimpleName() + ".");
+            MinecraftVersionList mvList = new MinecraftVersionList();
+            mvList.protocolOfVersion.putAll(context.deserialize(jsonObj.get("protocolOfVersion"), MAP_STR_INT_TYPE.getType()));
+            mvList.versionsOfProtocol.putAll(context.deserialize(jsonObj.get("versionsOfProtocol"), MAP_INT_LIST_STRING_TYPE.getType()));
+            for (List<String> versionLists : mvList.versionsOfProtocol.values()) {
+                versionLists.sort(MinecraftVersionUtil::compareVersions);
+            }
+            return mvList;
+        }
+
+        @Override
+        public JsonElement serialize(MinecraftVersionList src, Type typeOfSrc, JsonSerializationContext context) {
+            JsonObject obj = new JsonObject();
+            obj.add("protocolOfVersion", context.serialize(src.protocolOfVersion));
+            obj.add("versionsOfProtocol", context.serialize(src.versionsOfProtocol));
+            return obj;
+        }
+    }
 }

pandalib-core/src/main/java/fr/pandacube/lib/core/mc_version/MinecraftVersionUtil.java

@@ -135,4 +135,7 @@ public class MinecraftVersionUtil {
         return set;
     }
 
+
+    private MinecraftVersionUtil() {}
+
 }

pandalib-core/src/main/java/fr/pandacube/lib/core/mc_version/ProtocolVersion.java

@@ -1,7 +1,7 @@
 package fr.pandacube.lib.core.mc_version;
 
 import fr.pandacube.lib.core.json.Json;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import fr.pandacube.lib.util.StringUtil;
 import org.jetbrains.annotations.NotNull;
 
@@ -156,8 +156,9 @@ public class ProtocolVersion implements Comparable<ProtocolVersion> {
      * @return all the {@link ProtocolVersion} currently known by this class.
      */
     public static List<ProtocolVersion> allKnownProtocolVersions() {
-        return versionList.get().versionsOfProtocol().keySet().stream()
-                .map(ProtocolVersion::ofProtocol)
+        return versionList.get().versionsOfProtocol().entrySet().stream()
+                .filter(e -> e.getValue() != null && !e.getValue().isEmpty())
+                .map(e -> new ProtocolVersion(e.getKey(), List.copyOf(e.getValue())))
                 .toList();
     }
 
@@ -215,6 +216,22 @@ public class ProtocolVersion implements Comparable<ProtocolVersion> {
         return displayOptimizedListOfVersions(List.of(this), finalWordSeparator);
     }
 
+    /**
+     * Gets the first (earliest) Minecraft version that supports this protocol version.
+     * @return the first (earliest) Minecraft version that supports this protocol version.
+     */
+    public String getFirstVersion() {
+        return versions.get(0);
+    }
+
+    /**
+     * Gets the last (latest) Minecraft version that supports this protocol version.
+     * @return the last (latest) Minecraft version that supports this protocol version.
+     */
+    public String getLastVersion() {
+        return versions.get(versions.size() - 1);
+    }
+
     @Override
     public boolean equals(Object o) {
         return o instanceof ProtocolVersion pv && protocolVersionNumber == pv.protocolVersionNumber;

pandalib-core/src/main/java/fr/pandacube/lib/core/search/SearchEngine.java

@@ -2,7 +2,7 @@ package fr.pandacube.lib.core.search;
 
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.util.ArrayList;
 import java.util.HashMap;

pandalib-core/src/main/resources/fr/pandacube/lib/core/mc_version/mcversion.json

@@ -1,181 +1,91 @@
 {
   "protocolOfVersion": {
-    "1.20.1": 763,
-    "1.20": 763,
-    "1.19.4": 762,
-    "1.19.3": 761,
-    "1.19.2": 760,
-    "1.19.1": 760,
-    "1.19": 759,
-    "1.18.2": 758,
-    "1.18.1": 757,
-    "1.18": 757,
-    "1.17.1": 756,
-    "1.17": 755,
-    "1.16.5": 754,
-    "1.16.4": 754,
-    "1.16.3": 753,
-    "1.16.2": 751,
-    "1.16.1": 736,
-    "1.16": 735,
-    "1.15.2": 578,
-    "1.15.1": 575,
-    "1.15": 573,
-    "1.14.4": 498,
-    "1.14.3": 490,
-    "1.14.2": 485,
-    "1.14.1": 480,
-    "1.14": 477,
-    "1.13.2": 404,
-    "1.13.1": 401,
-    "1.13": 393,
-    "1.12.2": 340,
-    "1.12.1": 338,
-    "1.12": 335,
-    "1.11.2": 316,
-    "1.11.1": 316,
-    "1.11": 315,
-    "1.10.2": 210,
-    "1.10.1": 210,
-    "1.10": 210,
-    "1.9.4": 110,
-    "1.9.3": 110,
-    "1.9.2": 109,
-    "1.9.1": 108,
-    "1.9": 107,
-    "1.8.9": 47,
-    "1.8.8": 47,
-    "1.8.7": 47,
-    "1.8.6": 47,
-    "1.8.5": 47,
-    "1.8.4": 47,
-    "1.8.3": 47,
-    "1.8.2": 47,
-    "1.8.1": 47,
-    "1.8": 47,
-    "1.7.10": 5,
-    "1.7.9": 5,
-    "1.7.8": 5,
-    "1.7.7": 5,
-    "1.7.6": 5,
-    "1.7.5": 4,
-    "1.7.4": 4,
+    "1.7.2": 4,
     "1.7.3": 4,
-    "1.7.2": 4
+    "1.7.4": 4,
+    "1.7.5": 4,
+    "1.7.6": 5,
+    "1.7.7": 5,
+    "1.7.8": 5,
+    "1.7.9": 5,
+    "1.7.10": 5,
+    "1.8": 47,
+    "1.8.1": 47,
+    "1.8.2": 47,
+    "1.8.3": 47,
+    "1.8.4": 47,
+    "1.8.5": 47,
+    "1.8.6": 47,
+    "1.8.7": 47,
+    "1.8.8": 47,
+    "1.8.9": 47,
+    "1.9": 107,
+    "1.9.1": 108,
+    "1.9.2": 109,
+    "1.9.3": 110,
+    "1.9.4": 110,
+    "1.10": 210,
+    "1.10.1": 210,
+    "1.10.2": 210,
+    "1.11": 315,
+    "1.11.1": 316,
+    "1.11.2": 316,
+    "1.12": 335,
+    "1.12.1": 338,
+    "1.12.2": 340,
+    "1.13": 393,
+    "1.13.1": 401,
+    "1.13.2": 404,
+    "1.14": 477,
+    "1.14.1": 480,
+    "1.14.2": 485,
+    "1.14.3": 490,
+    "1.14.4": 498,
+    "1.15": 573,
+    "1.15.1": 575,
+    "1.15.2": 578,
+    "1.16": 735,
+    "1.16.1": 736,
+    "1.16.2": 751,
+    "1.16.3": 753,
+    "1.16.4": 754,
+    "1.16.5": 754,
+    "1.17": 755,
+    "1.17.1": 756,
+    "1.18": 757,
+    "1.18.1": 757,
+    "1.18.2": 758,
+    "1.19": 759,
+    "1.19.1": 760,
+    "1.19.2": 760,
+    "1.19.3": 761,
+    "1.19.4": 762,
+    "1.20": 763,
+    "1.20.1": 763,
+    "1.20.2": 764,
+    "1.20.3": 765,
+    "1.20.4": 765,
+    "1.20.5": 766,
+    "1.20.6": 766,
+    "1.21": 767,
+    "1.21.1": 767,
+    "1.21.2": 768,
+    "1.21.3": 768,
+    "1.21.4": 769
   },
   "versionsOfProtocol": {
-    "763": [
-      "1.20",
-      "1.20.1"
+    "4": [
+      "1.7.2",
+      "1.7.3",
+      "1.7.4",
+      "1.7.5"
     ],
-    "762": [
-      "1.19.4"
-    ],
-    "761": [
-      "1.19.3"
-    ],
-    "760": [
-      "1.19.1",
-      "1.19.2"
-    ],
-    "759": [
-      "1.19"
-    ],
-    "758": [
-      "1.18.2"
-    ],
-    "757": [
-      "1.18",
-      "1.18.1"
-    ],
-    "756": [
-      "1.17.1"
-    ],
-    "755": [
-      "1.17"
-    ],
-    "754": [
-      "1.16.4",
-      "1.16.5"
-    ],
-    "753": [
-      "1.16.3"
-    ],
-    "751": [
-      "1.16.2"
-    ],
-    "736": [
-      "1.16.1"
-    ],
-    "735": [
-      "1.16"
-    ],
-    "578": [
-      "1.15.2"
-    ],
-    "575": [
-      "1.15.1"
-    ],
-    "573": [
-      "1.15"
-    ],
-    "498": [
-      "1.14.4"
-    ],
-    "490": [
-      "1.14.3"
-    ],
-    "485": [
-      "1.14.2"
-    ],
-    "480": [
-      "1.14.1"
-    ],
-    "477": [
-      "1.14"
-    ],
-    "404": [
-      "1.13.2"
-    ],
-    "401": [
-      "1.13.1"
-    ],
-    "393": [
-      "1.13"
-    ],
-    "340": [
-      "1.12.2"
-    ],
-    "338": [
-      "1.12.1"
-    ],
-    "335": [
-      "1.12"
-    ],
-    "316": [
-      "1.11.1",
-      "1.11.2"
-    ],
-    "315": [
-      "1.11"
-    ],
-    "210": [
-      "1.10",
-      "1.10.1",
-      "1.10.2"
-    ],
-    "110": [
-      "1.9.3",
-      "1.9.4"
-    ],
-    "109": [
-      "1.9.2"
-    ],
-    "108": [
-      "1.9.1"
-    ],
-    "107": [
-      "1.9"
+    "5": [
+      "1.7.6",
+      "1.7.7",
+      "1.7.8",
+      "1.7.9",
+      "1.7.10"
     ],
     "47": [
       "1.8",
@@ -189,18 +99,140 @@
       "1.8.8",
       "1.8.9"
     ],
-    "5": [
-      "1.7.6",
-      "1.7.7",
-      "1.7.8",
-      "1.7.9",
-      "1.7.10"
+    "107": [
+      "1.9"
     ],
-    "4": [
-      "1.7.2",
-      "1.7.3",
-      "1.7.4",
-      "1.7.5"
+    "108": [
+      "1.9.1"
+    ],
+    "109": [
+      "1.9.2"
+    ],
+    "110": [
+      "1.9.3",
+      "1.9.4"
+    ],
+    "210": [
+      "1.10",
+      "1.10.1",
+      "1.10.2"
+    ],
+    "315": [
+      "1.11"
+    ],
+    "316": [
+      "1.11.1",
+      "1.11.2"
+    ],
+    "335": [
+      "1.12"
+    ],
+    "338": [
+      "1.12.1"
+    ],
+    "340": [
+      "1.12.2"
+    ],
+    "393": [
+      "1.13"
+    ],
+    "401": [
+      "1.13.1"
+    ],
+    "404": [
+      "1.13.2"
+    ],
+    "477": [
+      "1.14"
+    ],
+    "480": [
+      "1.14.1"
+    ],
+    "485": [
+      "1.14.2"
+    ],
+    "490": [
+      "1.14.3"
+    ],
+    "498": [
+      "1.14.4"
+    ],
+    "573": [
+      "1.15"
+    ],
+    "575": [
+      "1.15.1"
+    ],
+    "578": [
+      "1.15.2"
+    ],
+    "735": [
+      "1.16"
+    ],
+    "736": [
+      "1.16.1"
+    ],
+    "751": [
+      "1.16.2"
+    ],
+    "753": [
+      "1.16.3"
+    ],
+    "754": [
+      "1.16.4",
+      "1.16.5"
+    ],
+    "755": [
+      "1.17"
+    ],
+    "756": [
+      "1.17.1"
+    ],
+    "757": [
+      "1.18",
+      "1.18.1"
+    ],
+    "758": [
+      "1.18.2"
+    ],
+    "759": [
+      "1.19"
+    ],
+    "760": [
+      "1.19.1",
+      "1.19.2"
+    ],
+    "761": [
+      "1.19.3"
+    ],
+    "762": [
+      "1.19.4"
+    ],
+    "763": [
+      "1.20",
+      "1.20.1"
+    ],
+    "764": [
+      "1.20.2"
+    ],
+    "765": [
+      "1.20.3",
+      "1.20.4"
+    ],
+    "766": [
+      "1.20.5",
+      "1.20.6"
+    ],
+    "767": [
+      "1.21",
+      "1.21.1"
+    ],
+    "768": [
+      "1.21.2",
+      "1.21.3"
+    ],
+    "769": [
+      "1.21.4"
     ]
   }
 }

pandalib-db/pom.xml

@@ -27,7 +27,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-dbcp2</artifactId>
-            <version>2.9.0</version>
+            <version>2.12.0</version>
         </dependency>
     </dependencies>
 
@@ -36,7 +36,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.5.2</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -56,29 +56,32 @@
                                     <artifact>org.apache.commons:commons-dbcp2</artifact>
                                     <excludes>
                                         <exclude>META-INF/MANIFEST.MF</exclude>
+                                        <exclude>META-INF/versions/9/**</exclude>
                                     </excludes>
                                 </filter>
                                 <filter>
                                     <artifact>org.apache.commons:commons-pool2</artifact>
                                     <excludes>
                                         <exclude>META-INF/MANIFEST.MF</exclude>
+                                        <exclude>META-INF/versions/9/**</exclude>
                                     </excludes>
                                 </filter>
                                 <filter>
                                     <artifact>commons-logging:commons-logging</artifact>
                                     <excludes>
                                         <exclude>META-INF/MANIFEST.MF</exclude>
+                                        <exclude>META-INF/versions/9/**</exclude>
                                     </excludes>
                                 </filter>
                             </filters>
                             <relocations>
                                 <relocation>
-                                    <pattern>org.apache.commons</pattern>
-                                    <shadedPattern>fr.pandacube.lib.db.shaded.commons</shadedPattern>
+                                    <pattern>org.apache.commons.dbcp2</pattern>
+                                    <shadedPattern>fr.pandacube.lib.db.shaded.commons.dbcp2</shadedPattern>
                                 </relocation>
                                 <relocation>
-                                    <pattern>org.apache.commons</pattern>
-                                    <shadedPattern>fr.pandacube.lib.db.shaded.commons</shadedPattern>
+                                    <pattern>org.apache.commons.pool2</pattern>
+                                    <shadedPattern>fr.pandacube.lib.db.shaded.commons.pool2</shadedPattern>
                                 </relocation>
                             </relocations>
                             <transformers>

pandalib-db/src/main/java/fr/pandacube/lib/db/DB.java

@@ -15,7 +15,7 @@ import java.util.Objects;
 import java.util.function.Consumer;
 
 import fr.pandacube.lib.reflect.Reflect;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Static class to handle most of the database operations.

pandalib-db/src/main/java/fr/pandacube/lib/db/DBConnection.java

@@ -23,7 +23,8 @@ public class DBConnection {
     public DBConnection(String host, int port, String dbname, String login, String password) {
         this("jdbc:mysql://" + host + ":" + port + "/" + dbname
                         + "?useUnicode=true"
-                        + "&useSSL=false"
+                        + "&sslMode=DISABLED"
+                        + "&allowPublicKeyRetrieval=true"
                         + "&characterEncoding=utf8"
                         + "&characterSetResults=utf8"
                         + "&character_set_server=utf8mb4"

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLElement.java

@@ -26,7 +26,7 @@ import java.util.UUID;
 import java.util.stream.Collectors;
 
 import fr.pandacube.lib.util.EnumUtil;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Represents an entry in a SQL table. Each subclass is for a specific table.
@@ -241,17 +241,24 @@ public abstract class SQLElement<E extends SQLElement<E>> {
      * Gets the value of the provided field in this entry.
      * @param field the field to get the value from.
      * @return the value of the provided field in this entry.
+     * @throws IllegalArgumentException if the provided field is null or not from the table represented by this class.
+     * @throws IllegalStateException if the field is not nullable and there is no value set
      * @param <T> the Java type of the field.
      */
     public <T> T get(SQLField<E, T> field) {
-        if (field == null) throw new IllegalArgumentException("field can't be null");
+        if (field == null)
+            throw new IllegalArgumentException("field can't be null");
+        if (!fields.containsKey(field.getName()) || !fields.get(field.getName()).equals(field))
+            throw new IllegalArgumentException("The provided field " + field + " is not from this table " + getClass().getName());
         if (values.containsKey(field)) {
             @SuppressWarnings("unchecked")
             T val = (T) values.get(field);
             return val;
         }
-        throw new IllegalArgumentException("The field '" + field.getName() + "' in this instance of " + getClass().getName()
-                + " does not exist or is not set");
+        if (field.nullable)
+            return null;
+        throw new IllegalStateException("The non-nullable field '" + field.getName() + "' in this instance of " + getClass().getName()
+                + " is not set");
     }
 
     /**
@@ -354,7 +361,7 @@ public abstract class SQLElement<E extends SQLElement<E>> {
                     first = false;
                     concatValues.append(" ? ");
                     concatFields.append("`").append(entry.getKey().getName()).append("`");
-                    addValueToSQLObjectList(psValues, entry.getKey(), entry.getValue());
+                    psValues.add(entry.getKey().fromJavaTypeToJDBCType(entry.getValue()));
                 }
 
                 try (Connection c = db.getConnection();
@@ -382,20 +389,6 @@ public abstract class SQLElement<E extends SQLElement<E>> {
         return (E) this;
     }
 
-
-    @SuppressWarnings({ "rawtypes", "unchecked" })
-    /* package */ static <E extends SQLElement<E>> void addValueToSQLObjectList(List<Object> list, SQLField<E, ?> field, Object jValue) throws DBException {
-        if (jValue != null && field.type instanceof SQLCustomType) {
-            try {
-                jValue = ((SQLCustomType)field.type).javaToDbConv.apply(jValue);
-            } catch (Exception e) {
-                throw new DBException("Error while converting value of field '"+field.getName()+"' with SQLCustomType from "+field.type.getJavaType()
-                        +"(java source) to "+((SQLCustomType<?, ?>)field.type).intermediateJavaType+"(jdbc destination). The original value is '"+jValue+"'", e);
-            }
-        }
-        list.add(jValue);
-    }
-
     /**
      * Tells if this entry is currently stored in DB or not.
      * @return true if this entry is currently stored in DB, or false otherwise.

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLElementList.java

@@ -16,6 +16,11 @@ import java.util.stream.Collectors;
  */
 public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 
+    /**
+     * Creates an empty list of sql elements.
+     */
+    public SQLElementList() {}
+
     /**
      * Stores all the values modified by {@link #setCommon(SQLField, Object)}.
      */

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLFKField.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.db;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * A foreign key field in a SQL table.

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLField.java

@@ -133,7 +133,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code =} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> eq(T r) {
         return comp(SQLComparator.EQ, r);
@@ -142,7 +142,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code >=} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> geq(T r) {
         return comp(SQLComparator.GEQ, r);
@@ -151,7 +151,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code >} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> gt(T r) {
         return comp(SQLComparator.GT, r);
@@ -160,7 +160,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code <=} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> leq(T r) {
         return comp(SQLComparator.LEQ, r);
@@ -169,7 +169,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code <} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> lt(T r) {
         return comp(SQLComparator.LT, r);
@@ -178,7 +178,7 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code !=} operator.
      * @param r the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> neq(T r) {
         return comp(SQLComparator.NEQ, r);
@@ -194,7 +194,7 @@ public class SQLField<E extends SQLElement<E>, T> {
      * Create a SQL {@code WHERE} expression comparing this field with the provided value using the {@code LIKE}
      * keyword.
      * @param like the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> like(String like) {
         return new SQLWhereLike<>(this, like);
@@ -206,7 +206,7 @@ public class SQLField<E extends SQLElement<E>, T> {
      * Create a SQL {@code WHERE} expression testing the presence of this field in the provided collection of value
      * using the {@code IN} keyword.
      * @param v the value to compare with.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> in(Collection<T> v) {
         return new SQLWhereIn<>(this, v);
@@ -216,7 +216,7 @@ public class SQLField<E extends SQLElement<E>, T> {
 
     /**
      * Create a SQL {@code WHERE} expression testing the nullity of this field using the {@code IS NULL} keyword.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> isNull() {
         return new SQLWhereNull<>(this, true);
@@ -225,10 +225,35 @@ public class SQLField<E extends SQLElement<E>, T> {
     /**
      * Create a SQL {@code WHERE} expression testing the non-nullity of this field using the {@code IS NOT NULL}
      * keyword.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public fr.pandacube.lib.db.SQLWhere<E> isNotNull() {
         return new SQLWhereNull<>(this, false);
     }
 
+
+    @SuppressWarnings({"rawtypes", "unchecked"})
+    /* package */ Object fromJavaTypeToJDBCType(Object value) throws DBException {
+        Object ret = value;
+        if (value != null && type instanceof SQLCustomType customType) {
+            try {
+                ret = customType.javaToDbConv.apply(value);
+            } catch (Exception e) {
+                throw new DBException("Error while converting value of field '" + name + "' with SQLCustomType from " + type.getJavaType()
+                        + "(java source) to " + customType.intermediateJavaType + "(jdbc destination). The original value is '" + value + "'", e);
+            }
+        }
+        return ret;
+    }
+
+    /* package */ Collection<Object> fromListJavaTypeToJDBCType(Collection<?> values) throws DBException {
+        if (values == null)
+            return null;
+        List<Object> ret = new ArrayList<>(values.size());
+        for (Object value : values) {
+            ret.add(fromJavaTypeToJDBCType(value));
+        }
+        return ret;
+    }
+
 }

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLUpdateBuilder.java

@@ -6,7 +6,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Builder for a SQL {@code UPDATE} query.
@@ -74,7 +74,7 @@ public class SQLUpdateBuilder<E extends SQLElement<E>> {
             if (!first)
                 sql.append(", ");
             sql.append("`").append(entry.getKey().getName()).append("` = ? ");
-            SQLElement.addValueToSQLObjectList(params, entry.getKey(), entry.getValue());
+            params.add(entry.getKey().fromJavaTypeToJDBCType(entry.getValue()));
             first = false;
         }
 

pandalib-db/src/main/java/fr/pandacube/lib/db/SQLWhere.java

@@ -3,15 +3,21 @@ package fr.pandacube.lib.db;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.Objects;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
- * A SQL {@code WHERE} expression.
+ * SQL {@code WHERE} expression.
  * @param <E> the table type.
  */
 public abstract class SQLWhere<E extends SQLElement<E>> {
 
+    /**
+     * Creates a SQL WHERE expression.
+     */
+    protected SQLWhere() {}
+
     /* package */ abstract ParameterizedSQLString toSQL() throws DBException;
 
     @Override
@@ -29,7 +35,7 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
      * Create a SQL {@code WHERE} expression that is true when this expression {@code AND} the provided expression is
      * true.
      * @param other the other expression.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public SQLWhere<E> and(SQLWhere<E> other) {
         return SQLWhere.<E>and().and(this).and(other);
@@ -39,7 +45,7 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
      * Create a SQL {@code WHERE} expression that is true when this expression {@code OR} the provided expression is
      * true.
      * @param other the other expression.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      */
     public SQLWhere<E> or(SQLWhere<E> other) {
         return SQLWhere.<E>or().or(this).or(other);
@@ -48,7 +54,7 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
     /**
      * Create a SQL {@code WHERE} expression builder joining multiple expressions with the {@code AND} operator.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      * @param <E> the table type.
      */
     public static <E extends SQLElement<E>> SQLWhereAndBuilder<E> and() {
@@ -57,13 +63,63 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
     /**
      * Create a SQL {@code WHERE} expression builder joining multiple expressions with the {@code OR} operator.
-     * @return a SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
      * @param <E> the table type.
      */
     public static <E extends SQLElement<E>> SQLWhereOrBuilder<E> or() {
         return new SQLWhereOrBuilder<>();
     }
 
+    /**
+     * Create a custom SQL {@code WHERE} expression.
+     * @param whereExpr the raw SQL {@code WHERE} expression.
+     * @return a new SQL {@code WHERE} expression.
+     * @param <E> the table type.
+     */
+    public static <E extends SQLElement<E>> SQLWhere<E> expression(String whereExpr) {
+        return expression(whereExpr, List.of());
+    }
+
+    /**
+     * Create a custom SQL {@code WHERE} expression.
+     * @param whereExpr the raw SQL {@code WHERE} expression.
+     * @param params the parameters of the provided expression.
+     * @return a new SQL {@code WHERE} expression.
+     * @param <E> the table type.
+     */
+    public static <E extends SQLElement<E>> SQLWhere<E> expression(String whereExpr, List<Object> params) {
+        return new SQLWhereCustomExpression<>(whereExpr, params);
+    }
+
+    /**
+     * Create a SQL {@code WHERE ... IN ...} expression with a custom left operand.
+     * @param leftExpr the raw SQL left operand.
+     * @param valuesIn the values on the right of the {@code IN} operator.
+     * @return a new SQL {@code WHERE} expression.
+     * @param <E> the table type.
+     */
+    public static <E extends SQLElement<E>> SQLWhere<E> expressionIn(String leftExpr, Collection<?> valuesIn) {
+        return expressionIn(leftExpr, List.of(), valuesIn);
+    }
+
+    /**
+     * Create a SQL {@code WHERE ... IN ...} expression with a custom left operand.
+     * @param leftExpr the raw SQL left operand.
+     * @param leftParams the parameters of the left operand.
+     * @param valuesIn the values on the right of the {@code IN} operator.
+     * @return a new SQL {@code WHERE} expression.
+     * @param <E> the table type.
+     */
+    public static <E extends SQLElement<E>> SQLWhere<E> expressionIn(String leftExpr, List<Object> leftParams, Collection<?> valuesIn) {
+        return new SQLWhereInCustom<>(leftExpr, leftParams, valuesIn);
+    }
+
+
+
+
+
+
+
 
     /**
      * A SQL {@code WHERE} expression builder joining multiple expressions with the {@code AND} or {@code OR} operator.
@@ -207,9 +263,8 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
         @Override
         /* package */ ParameterizedSQLString toSQL() throws DBException {
-            List<Object> params = new ArrayList<>();
-            SQLElement.addValueToSQLObjectList(params, left, right);
-            return new ParameterizedSQLString("`" + left.getName() + "` " + comp.sql + " ? ", params);
+            return new ParameterizedSQLString("`" + left.getName() + "` " + comp.sql + " ? ",
+                    List.of(left.fromJavaTypeToJDBCType(right)));
         }
 
         /* package */ enum SQLComparator {
@@ -241,33 +296,39 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
 
 
-    /* package */ static class SQLWhereIn<E extends SQLElement<E>> extends SQLWhere<E> {
+    /* package */ static class SQLWhereInCustom<E extends SQLElement<E>> extends SQLWhere<E> {
 
-        private final SQLField<E, ?> field;
-        private final Collection<?> values;
+        private final String leftExpression;
+        private final List<Object> leftExpressionParameters;
+        protected Collection<?> collectionIn;
 
-        /* package */ <T> SQLWhereIn(SQLField<E, T> f, Collection<T> v) {
-            if (f == null || v == null)
-                throw new IllegalArgumentException("All arguments for SQLWhereIn constructor can't be null");
-            field = f;
-            values = v;
+        /* package */ <T> SQLWhereInCustom(String leftExpr, List<Object> leftExprParams, Collection<T> collectionIn) {
+            if (leftExpr == null)
+                throw new IllegalArgumentException("leftExpr can't be null");
+            if (leftExprParams == null)
+                leftExprParams = List.of();
+            if (collectionIn == null)
+                collectionIn = List.of();
+            leftExpression = leftExpr;
+            leftExpressionParameters = leftExprParams;
+            this.collectionIn = collectionIn;
         }
 
         @Override
         /* package */ ParameterizedSQLString toSQL() throws DBException {
             List<Object> params = new ArrayList<>();
 
-            if (values.isEmpty())
+            if (collectionIn.isEmpty())
                 return new ParameterizedSQLString(" 1=0 ", params);
 
-            for (Object v : values)
-                SQLElement.addValueToSQLObjectList(params, field, v);
+            params.addAll(leftExpressionParameters);
+            params.addAll(collectionIn);
 
-            char[] questions = new char[values.size() == 0 ? 0 : (values.size() * 2 - 1)];
+            char[] questions = new char[collectionIn.size() * 2 - 1];
             for (int i = 0; i < questions.length; i++)
                 questions[i] = i % 2 == 0 ? '?' : ',';
 
-            return new ParameterizedSQLString("`" + field.getName() + "` IN (" + new String(questions) + ") ", params);
+            return new ParameterizedSQLString("(" + leftExpression + ") IN (" + new String(questions) + ") ", params);
         }
 
     }
@@ -277,6 +338,32 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
 
 
+    /* package */ static class SQLWhereIn<E extends SQLElement<E>> extends SQLWhereInCustom<E> {
+
+        private final SQLField<E, ?> field;
+        private boolean collectionFiltered = false;
+
+        /* package */ <T> SQLWhereIn(SQLField<E, T> f, Collection<T> v) {
+            super("`" + Objects.requireNonNull(f).getName() + "`", List.of(), v);
+            field = f;
+        }
+
+
+        @Override
+        ParameterizedSQLString toSQL() throws DBException {
+            if (!collectionFiltered) {
+                collectionIn = field.fromListJavaTypeToJDBCType(collectionIn);
+                collectionFiltered = true;
+            }
+            return super.toSQL();
+        }
+    }
+
+
+
+
+
+
 
 
     /* package */ static class SQLWhereLike<E extends SQLElement<E>> extends SQLWhere<E> {
@@ -334,6 +421,33 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
 
 
 
+    /* package */ static class SQLWhereCustomExpression<E extends SQLElement<E>> extends SQLWhere<E> {
+
+        private final String sqlExpression;
+        private final List<Object> parameters;
+
+        /* package */ SQLWhereCustomExpression(String sqlExpression, List<Object> parameters) {
+            if (sqlExpression == null)
+                throw new IllegalArgumentException("sqlExpression can't be null");
+            if (parameters == null)
+                parameters = List.of();
+            this.sqlExpression = sqlExpression;
+            this.parameters = parameters;
+        }
+
+        @Override
+            /* package */ ParameterizedSQLString toSQL() {
+            return new ParameterizedSQLString(sqlExpression, parameters);
+        }
+
+    }
+
+
+
+
+
+
+
 
 
     /**

pandalib-netapi/pom.xml

@@ -21,4 +21,8 @@
         </dependency>
     </dependencies>
 
+    <properties>
+        <maven.javadoc.skip>true</maven.javadoc.skip>
+    </properties>
+
 </project>

pandalib-netapi/src/main/java/fr/pandacube/lib/netapi/server/AbstractRequestExecutor.java

@@ -5,7 +5,7 @@ import java.io.PrintStream;
 import java.net.InetAddress;
 import java.net.Socket;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 public abstract class AbstractRequestExecutor {
 

pandalib-netapi/src/main/java/fr/pandacube/lib/netapi/server/NetworkAPIListener.java

@@ -1,6 +1,6 @@
 package fr.pandacube.lib.netapi.server;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 import java.io.IOException;
 import java.net.InetAddress;

pandalib-netapi/src/main/java/fr/pandacube/lib/netapi/server/PacketExecutor.java

@@ -5,7 +5,7 @@ import java.io.PrintStream;
 import java.net.Socket;
 
 import fr.pandacube.lib.netapi.server.RequestAnalyser.BadRequestException;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Prends en charge un socket client et le transmet au gestionnaire de paquet

pandalib-paper-permissions/pom.xml

@@ -16,7 +16,7 @@
     <repositories>
         <repository>
             <id>papermc</id>
-            <url>https://papermc.io/repo/repository/maven-public/</url>
+            <url>https://repo.papermc.io/repository/maven-public/</url>
         </repository>
 
         <!-- WorldEdit -->
@@ -77,7 +77,7 @@
         <dependency>
             <groupId>com.sk89q.worldedit</groupId>
             <artifactId>worldedit-bukkit</artifactId>
-            <version>7.2.9</version>
+            <version>7.2.19</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>

pandalib-paper-permissions/src/main/java/fr/pandacube/lib/paper/permissions/PandalibPaperPermissions.java

@@ -23,11 +23,11 @@ import org.bukkit.permissions.ServerOperator;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import fr.pandacube.lib.permissions.Permissions;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /**
  * Class that integrates the {@code pandalib-permissions} system into a Bukkit/Spigot/Paper instance.
- * The integration is made when calling {@link #init(JavaPlugin, String)}.
+ * The integration is made when calling {@link #onLoad(JavaPlugin, String)} and {@link #onEnable()}.
  * The permission system must be initialized first, using {@link Permissions#init(Function)}.
  * Don’t forget that the permission system also needs a connection to a database, so don’t forget to call
  * {@link DB#init(DBConnection, String)} with the appropriate parameters before anything.
@@ -38,18 +38,26 @@ public class PandalibPaperPermissions implements Listener {
 	/* package */ static String serverName;
 	/* package */ static final Map<String, String> permissionMap = new HashMap<>();
 
+
 	/**
-	 * Integrates the {@code pandalib-permissions} system into the Bukkit server.
+	 * Integrates the {@code pandalib-permissions} system into the Bukkit server, during the loading phase of the plugin.
 	 * @param plugin a Bukkit plugin.
 	 * @param serverName the name of the current server, used to fetch server specific permissions. Cannot be null.
 	 *                   If this server in not in a multiserver configuration, use a dummy server name, like
 	 *                   {@code ""} (empty string).
 	 */
-	public static void init(JavaPlugin plugin, String serverName) {
+	public static void onLoad(JavaPlugin plugin, String serverName) {
 		PandalibPaperPermissions.plugin = plugin;
 		PandalibPaperPermissions.serverName = serverName;
+		PermissionsInjectorVault.onLoad();
+	}
+
+	/**
+	 * Integrates the {@code pandalib-permissions} system into the Bukkit server, during the enabling phase of the plugin.
+	 */
+	public static void onEnable() {
 		PermissionsInjectorBukkit.inject(Bukkit.getConsoleSender());
-		PermissionsInjectorVault.inject();
+		PermissionsInjectorVault.onEnable();
 		PermissionsInjectorWEPIF.inject();
 
 		Bukkit.getPluginManager().registerEvents(new PandalibPaperPermissions(), plugin);
@@ -74,6 +82,12 @@ public class PandalibPaperPermissions implements Listener {
 		}
 	}
 
+
+	/**
+	 * Creates a {@link PandalibPaperPermissions} instance.
+	 */
+	private PandalibPaperPermissions() {}
+
 	/**
 	 * Player login event handler.
 	 * @param event the event.

pandalib-paper-permissions/src/main/java/fr/pandacube/lib/paper/permissions/PermissionsInjectorBukkit.java

@@ -6,7 +6,7 @@ import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import fr.pandacube.lib.permissions.Permissions;
 import fr.pandacube.lib.reflect.Reflect;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
 import org.bukkit.entity.Player;

pandalib-paper-permissions/src/main/java/fr/pandacube/lib/paper/permissions/PermissionsInjectorVault.java

@@ -2,7 +2,9 @@ package fr.pandacube.lib.paper.permissions;
 
 import fr.pandacube.lib.permissions.PermGroup;
 import fr.pandacube.lib.permissions.Permissions;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
+import net.milkbowl.vault.chat.Chat;
+import net.milkbowl.vault.permission.Permission;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.plugin.ServicePriority;
@@ -10,28 +12,55 @@ import org.bukkit.plugin.ServicePriority;
 import java.util.List;
 
 /* package */ class PermissionsInjectorVault {
+
+	private static final ServicePriority servicePriority = ServicePriority.Highest;
 	
 	public static PandaVaultPermission permInstance;
-	
-	public static void inject() {
+
+	/**
+	 * Vault injection needs to happen as soon as possible so other plugins detects it when they load.
+	 */
+	public static void onLoad() {
 		try {
 			permInstance = new PandaVaultPermission();
 			PandaVaultChat chat = new PandaVaultChat(permInstance);
-			Bukkit.getServicesManager().register(net.milkbowl.vault.permission.Permission.class, permInstance,
-					PandalibPaperPermissions.plugin, ServicePriority.High);
-			Bukkit.getServicesManager().register(net.milkbowl.vault.chat.Chat.class, chat,
-					PandalibPaperPermissions.plugin, ServicePriority.High);
+			Bukkit.getServicesManager().register(Permission.class, permInstance,
+					PandalibPaperPermissions.plugin, servicePriority);
+			Bukkit.getServicesManager().register(Chat.class, chat,
+					PandalibPaperPermissions.plugin, servicePriority);
 			Log.info("Providing permissions and chat prefix/suffix through Vault API.");
 		} catch (NoClassDefFoundError e) {
 			Log.warning("Vault plugin not detected. Not using it to provide permissions and prefix/suffix." + e.getMessage());
 		}
 	}
+	
+	public static void onEnable() {
+		Bukkit.getScheduler().runTaskLater(PandalibPaperPermissions.plugin,
+				PermissionsInjectorVault::checkServicesRegistration, 1);
+	}
+
+
+	private static void checkServicesRegistration() {
+		Permission permService = Bukkit.getServicesManager().load(Permission.class);
+		if (!(permService instanceof PandaVaultPermission)) {
+			Log.severe("Check for Vault Permission service failed. "
+					+ (permService == null ? "Service manager returned null."
+					: ("Returned service is " + permService.getName() + " (" + permService.getClass().getName() + ").")));
+
+		}
+		Chat chatService = Bukkit.getServicesManager().load(Chat.class);
+		if (!(chatService instanceof PandaVaultChat)) {
+			Log.severe("Check for Vault Chat service failed. "
+					+ (chatService == null ? "Service manager returned null."
+					: ("Returned service is " + chatService.getName() + " (" + chatService.getClass().getName() + ").")));
+		}
+	}
 
 
 
 
 
-	/* package */ static class PandaVaultPermission extends net.milkbowl.vault.permission.Permission {
+	/* package */ static class PandaVaultPermission extends Permission {
 		
 		private PandaVaultPermission() { }
 
@@ -45,6 +74,11 @@ import java.util.List;
 			return PandalibPaperPermissions.plugin != null && PandalibPaperPermissions.plugin.isEnabled();
 		}
 
+		private void checkEnabled() {
+			if (!isEnabled())
+				throw new IllegalStateException("Cannot provide permission service because plugin is disabled.");
+		}
+
 		@Override
 		public boolean hasSuperPermsCompat() {
 			return true;
@@ -58,6 +92,7 @@ import java.util.List;
 		
 		@Override
 		public boolean playerHas(String world, OfflinePlayer player, String permission) {
+			checkEnabled();
 			Boolean res = Permissions.getPlayer(player.getUniqueId()).hasPermission(permission, PandalibPaperPermissions.serverName, world);
 			if (res != null)
 				return res;
@@ -77,8 +112,10 @@ import java.util.List;
 
 		@Override
 		public boolean playerAdd(String world, OfflinePlayer player, String permission) {
+			checkEnabled();
 			String server = PandalibPaperPermissions.serverName;
 			Permissions.getPlayer(player.getUniqueId()).addSelfPermission(permission, server, world);
+			Permissions.clearPlayerCache(player.getUniqueId());
 			Log.info("A plugin added permission " + permission + " (server=" + server + ",world=" + world + ") to player " + player.getName() + " through Vault.");
 			return true;
 		}
@@ -91,14 +128,17 @@ import java.util.List;
 
 		@Override
 		public boolean playerRemove(String world, OfflinePlayer player, String permission) {
+			checkEnabled();
 			String server = PandalibPaperPermissions.serverName;
 			Permissions.getPlayer(player.getUniqueId()).removeSelfPermission(permission, server, world);
+			Permissions.clearPlayerCache(player.getUniqueId());
 			Log.info("A plugin removed permission " + permission + " (server=" + server + ",world=" + world + ") to player " + player.getName() + " through Vault.");
 			return true;
 		}
 
 		@Override
 		public boolean groupHas(String world, String group, String permission) {
+			checkEnabled();
 			Boolean res = Permissions.getGroup(group).hasPermission(permission, PandalibPaperPermissions.serverName, world);
 			if (res != null)
 				return res;
@@ -112,14 +152,14 @@ import java.util.List;
 
 		@Override
 		public boolean groupAdd(String world, String group, String permission) {
-			Log.warning(new Throwable("A plugin tried to add to group " + group + " (world=" + world + ") the permission " + permission
+			Log.severe(new Throwable("A plugin tried to add to group " + group + " (world=" + world + ") the permission " + permission
 					+ " through Vault but Pandalib does not support it."));
 			return false;
 		}
 
 		@Override
 		public boolean groupRemove(String world, String group, String permission) {
-			Log.warning(new Throwable("A plugin tried to remove from group " + group + " (world=" + world + ") the permission " + permission
+			Log.severe(new Throwable("A plugin tried to remove from group " + group + " (world=" + world + ") the permission " + permission
 					+ " through Vault but Pandalib does not support it."));
 			return false;
 		}
@@ -132,13 +172,14 @@ import java.util.List;
 		
 		@Override
 		public boolean playerInGroup(String world, OfflinePlayer player, String group) {
+			checkEnabled();
 			return Permissions.getPlayer(player.getUniqueId()).isInGroup(group);
 		}
 
 		@Deprecated
 		@Override
 		public boolean playerAddGroup(String world, String player, String group) {
-			Log.warning(new Throwable("A plugin tried to add player " + player + " (world=" + world + ") to permission group " + group
+			Log.severe(new Throwable("A plugin tried to add player " + player + " (world=" + world + ") to permission group " + group
 					+ " through Vault but Pandalib does not support it."));
 			return false;
 		}
@@ -146,7 +187,7 @@ import java.util.List;
 		@Deprecated
 		@Override
 		public boolean playerRemoveGroup(String world, String player, String group) {
-			Log.warning(new Throwable("A plugin tried to remove player " + player + " (world=" + world + ") from permission group " + group
+			Log.severe(new Throwable("A plugin tried to remove player " + player + " (world=" + world + ") from permission group " + group
 					+ " through Vault but Pandalib does not support it."));
 			return false;
 		}
@@ -159,6 +200,7 @@ import java.util.List;
 		
 		@Override
 		public String[] getPlayerGroups(String world, OfflinePlayer player) {
+			checkEnabled();
 			List<String> groups = Permissions.getPlayer(player.getUniqueId()).getGroupsString();
 			return groups.toArray(new String[0]);
 		}
@@ -171,12 +213,14 @@ import java.util.List;
 		
 		@Override
 		public String getPrimaryGroup(String world, OfflinePlayer player) {
+			checkEnabled();
 			return Permissions.getPlayer(player.getUniqueId()).getGroupsString().stream()
 					.findFirst().orElse(null);
 		}
 
 		@Override
 		public String[] getGroups() {
+			checkEnabled();
 			return Permissions.getGroups().stream()
 					.map(PermGroup::getName).toArray(String[]::new);
 		}
@@ -189,9 +233,9 @@ import java.util.List;
 	}
 	
 	
-	private static class PandaVaultChat extends net.milkbowl.vault.chat.Chat {
+	private static class PandaVaultChat extends Chat {
 
-		public PandaVaultChat(net.milkbowl.vault.permission.Permission perms) {
+		public PandaVaultChat(Permission perms) {
 			super(perms);
 		}
 
@@ -205,6 +249,11 @@ import java.util.List;
 			return PandalibPaperPermissions.plugin != null && PandalibPaperPermissions.plugin.isEnabled();
 		}
 
+		private void checkEnabled() {
+			if (!isEnabled())
+				throw new IllegalStateException("Cannot provide permission service because plugin is disabled.");
+		}
+
 		@Deprecated
 		@Override
 		public String getPlayerPrefix(String world, String player) {
@@ -213,6 +262,7 @@ import java.util.List;
 		
 		@Override
 		public String getPlayerPrefix(String world, OfflinePlayer player) {
+			checkEnabled();
 			return Permissions.getPlayer(player.getUniqueId()).getPrefix();
 		}
 
@@ -224,16 +274,19 @@ import java.util.List;
 		
 		@Override
 		public String getPlayerSuffix(String world, OfflinePlayer player) {
+			checkEnabled();
 			return Permissions.getPlayer(player.getUniqueId()).getSuffix();
 		}
 
 		@Override
 		public String getGroupPrefix(String world, String group) {
+			checkEnabled();
 			return Permissions.getGroup(group).getPrefix();
 		}
 
 		@Override
 		public String getGroupSuffix(String world, String group) {
+			checkEnabled();
 			return Permissions.getGroup(group).getSuffix();
 		}
 

pandalib-paper-permissions/src/main/java/fr/pandacube/lib/paper/permissions/PermissionsInjectorWEPIF.java

@@ -11,7 +11,7 @@ import org.bukkit.plugin.ServicePriority;
 
 import fr.pandacube.lib.permissions.PermPlayer;
 import fr.pandacube.lib.permissions.Permissions;
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 
 /* package */ class PermissionsInjectorWEPIF {
 	

pandalib-paper/pom.xml

@@ -16,7 +16,7 @@
     <repositories>
         <repository>
             <id>papermc</id>
-            <url>https://papermc.io/repo/repository/maven-public/</url>
+            <url>https://repo.papermc.io/repository/maven-public/</url>
         </repository>
         <repository>
             <id>fabricmc</id>
@@ -71,6 +71,12 @@
             <version>${project.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>fr.pandacube.lib</groupId>
+            <artifactId>pandalib-bungee-chat</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>fr.pandacube.lib</groupId>
             <artifactId>pandalib-paper-permissions</artifactId>
@@ -84,19 +90,6 @@
             <artifactId>paper-api</artifactId>
             <version>${paper.version}-SNAPSHOT</version>
         </dependency>
-        <dependency>
-            <groupId>io.papermc.paper</groupId>
-            <artifactId>paper-mojangapi</artifactId>
-            <version>${paper.version}-SNAPSHOT</version>
-        </dependency>
-
-        <!-- Needed to read obfuscation mapping file. Already included in Paper -->
-        <dependency>
-            <groupId>net.fabricmc</groupId>
-            <artifactId>mapping-io</artifactId>
-            <version>0.3.0</version>
-            <scope>provided</scope>
-        </dependency>
     </dependencies>
 
     <build>

pandalib-paper/src/main/java/fr/pandacube/lib/paper/PandaLibPaper.java

@@ -1,29 +1,51 @@
 package fr.pandacube.lib.paper;
 
+import fr.pandacube.lib.paper.event.ServerStopEvent;
 import fr.pandacube.lib.paper.json.PaperJson;
 import fr.pandacube.lib.paper.modules.PerformanceAnalysisManager;
 import org.bukkit.plugin.Plugin;
 
+/**
+ * Main class for pandalib-paper.
+ */
 public class PandaLibPaper {
 	
 	private static Plugin plugin;
-	
+
+	/**
+	 * Method to call in plugin's {@link Plugin#onLoad()} method.
+	 * @param plugin the plugin instance.
+	 */
 	public static void onLoad(Plugin plugin) {
 		PandaLibPaper.plugin = plugin;
 		PaperJson.init();
 	}
 
+	/**
+	 * Method to call in plugin's {@link Plugin#onEnable()} method.
+	 */
 	public static void onEnable() {
 		PerformanceAnalysisManager.getInstance(); // initialize
+		ServerStopEvent.init();
 	}
 
 
+
+	/**
+	 * Method to call in plugin's {@link Plugin#onDisable()} method.
+	 */
 	public static void disable() {
-		PerformanceAnalysisManager.getInstance().cancelInternalBossBar();
+		PerformanceAnalysisManager.getInstance().deinit();
 	}
-	
+
+	/**
+	 * Gets the plugin instance.
+	 * @return the plugin instance provided with {@link #onLoad(Plugin)}.
+	 */
 	public static Plugin getPlugin() {
 		return plugin;
 	}
 
+	private PandaLibPaper() {}
+
 }

pandalib-paper/src/main/java/fr/pandacube/lib/paper/backup/PaperBackupConfig.java

@@ -6,14 +6,65 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * A basic class holding configuration for {@link PaperBackupManager}.
+ */
 @SuppressWarnings("CanBeFinal")
 public class PaperBackupConfig {
+
+    /**
+     * Creates a new Paper backup config.
+     */
+    public PaperBackupConfig() {}
+
+    /**
+     * Set to true to enable worlds backup.
+     * Defaults to true.
+     */
     public boolean worldBackupEnabled = true;
+
+    /**
+     * Set to true to enable the backup of the working directory.
+     * The workdir backup will already ignore the logs directory and any world folder (folder with a level.dat file in it).
+     * Defaults to true.
+     */
     public boolean workdirBackupEnabled = true;
+
+    /**
+     * Set to true to enable the backup of logs.
+     * Defaults to true.
+     */
     public boolean logsBackupEnabled = true;
+
+    /**
+     * The cron-formatted scheduling of the worlds and workdir backups.
+     * The default value is {@code "0 2 * * *"}, that is every day at 2am.
+     */
     public String scheduling = "0 2 * * *"; // cron format, here is every day at 2am
+
+    /**
+     * The backup target directory.
+     * Must be set (defaults to null).
+     */
     public File backupDirectory = null;
+
+    /**
+     * The backup cleaner for the worlds backup.
+     * Defaults to keep 1 backup every 3 month + the last 5 backups.
+     */
     public BackupCleaner worldBackupCleaner = BackupCleaner.KEEPING_1_EVERY_N_MONTH(3).merge(BackupCleaner.KEEPING_N_LAST(5));
+
+    /**
+     * The backup cleaner for the workdir backup.
+     * Defaults to keep 1 backup every 3 month + the last 5 backups.
+     */
     public BackupCleaner workdirBackupCleaner = BackupCleaner.KEEPING_1_EVERY_N_MONTH(3).merge(BackupCleaner.KEEPING_N_LAST(5));
+
+    /**
+     * The list of files or directory to ignore.
+     * Defaults to none.
+     * The workdir backup will already ignore the logs directory and any world folder (folder with a level.dat file in it).
+     */
     public List<String> workdirIgnoreList = new ArrayList<>();
+
 }

pandalib-paper/src/main/java/fr/pandacube/lib/paper/backup/PaperBackupManager.java

@@ -21,13 +21,21 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.CancellationException;
 
+/**
+ * The backup manager for Paper servers.
+ */
 public class PaperBackupManager extends BackupManager implements Listener {
 
 	private final Map<String, PaperWorldProcess> compressWorlds = new HashMap<>();
 
 	PaperBackupConfig config;
-	
+
+	/**
+	 * Instantiate a new backup manager.
+	 * @param config the configuration of the backups.
+	 */
 	public PaperBackupManager(PaperBackupConfig config) {
 		super(config.backupDirectory);
 		setConfig(config);
@@ -48,13 +56,17 @@ public class PaperBackupManager extends BackupManager implements Listener {
 		super.addProcess(process);
 	}
 
+	/**
+	 * Updates the backups config
+	 * @param config the new config.
+	 */
 	public void setConfig(PaperBackupConfig config) {
 		this.config = config;
 		backupQueue.forEach(this::updateProcessConfig);
 	}
 
 
-	public void updateProcessConfig(BackupProcess process) {
+	private void updateProcessConfig(BackupProcess process) {
 		if (process instanceof PaperWorkdirProcess) {
 			process.setEnabled(config.workdirBackupEnabled);
 			process.setBackupCleaner(config.workdirBackupCleaner);
@@ -76,7 +88,9 @@ public class PaperBackupManager extends BackupManager implements Listener {
 	public void run() {
 		try {
 			SchedulerUtil.runOnServerThreadAndWait(super::run);
-		} catch (Exception e) {
+		} catch (CancellationException ignored) {
+
+        } catch (Exception e) {
 			throw new RuntimeException(e);
 		}
 	}
@@ -116,12 +130,12 @@ public class PaperBackupManager extends BackupManager implements Listener {
 	private final Set<String> dirtyForSave = new HashSet<>();
 
 	@EventHandler(priority = EventPriority.MONITOR)
-	public void onWorldLoad(WorldLoadEvent event) {
+	void onWorldLoad(WorldLoadEvent event) {
 		initWorldProcess(event.getWorld().getName());
 	}
 
 	@EventHandler(priority = EventPriority.MONITOR)
-	public void onWorldSave(WorldSaveEvent event) {
+	void onWorldSave(WorldSaveEvent event) {
 		if (event.getWorld().getLoadedChunks().length > 0
 				|| dirtyForSave.contains(event.getWorld().getName())) {
 			compressWorlds.get(event.getWorld().getName()).setDirtyAfterSave();
@@ -134,18 +148,18 @@ public class PaperBackupManager extends BackupManager implements Listener {
 
 
 	@EventHandler(priority = EventPriority.MONITOR)
-	public void onPlayerChangeWorldEvent(PlayerChangedWorldEvent event) {
+	void onPlayerChangeWorldEvent(PlayerChangedWorldEvent event) {
 		dirtyForSave.add(event.getFrom().getName());
 		dirtyForSave.add(event.getPlayer().getWorld().getName());
 	}
 
 	@EventHandler(priority = EventPriority.MONITOR)
-	public void onPlayerJoin(PlayerJoinEvent event) {
+	void onPlayerJoin(PlayerJoinEvent event) {
 		dirtyForSave.add(event.getPlayer().getWorld().getName());
 	}
 
 	@EventHandler(priority = EventPriority.MONITOR)
-	public void onPlayerQuit(PlayerQuitEvent event) {
+	void onPlayerQuit(PlayerQuitEvent event) {
 		dirtyForSave.add(event.getPlayer().getWorld().getName());
 	}
 

pandalib-paper/src/main/java/fr/pandacube/lib/paper/backup/PaperBackupProcess.java

@@ -10,11 +10,19 @@ import net.kyori.adventure.bossbar.BossBar.Color;
 import net.kyori.adventure.bossbar.BossBar.Overlay;
 import org.bukkit.Bukkit;
 
+/**
+ * A backup process with specific logic around Paper server.
+ */
 public abstract class PaperBackupProcess extends BackupProcess {
 
 
 	private BossBar bossBar;
-	
+
+	/**
+	 * Instantiates a new backup process.
+	 * @param bm the associated backup manager.
+	 * @param id the process identifier.
+	 */
 	protected PaperBackupProcess(PaperBackupManager bm, String id) {
 		super(bm, id);
 	}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/backup/PaperWorkdirProcess.java

@@ -3,8 +3,15 @@ package fr.pandacube.lib.paper.backup;
 import java.io.File;
 import java.util.function.BiPredicate;
 
+/**
+ * A backup process with specific logic around Paper server working directory.
+ */
 public class PaperWorkdirProcess extends PaperBackupProcess {
-	
+
+	/**
+	 * Instantiates a new backup process for the paper server working directory.
+	 * @param bm the associated backup manager.
+	 */
 	protected PaperWorkdirProcess(PaperBackupManager bm) {
 		super(bm, "workdir");
 	}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/backup/PaperWorldProcess.java

@@ -1,9 +1,9 @@
 package fr.pandacube.lib.paper.backup;
 
+import fr.pandacube.lib.chat.LegacyChatFormat;
 import fr.pandacube.lib.paper.scheduler.SchedulerUtil;
-import fr.pandacube.lib.paper.util.WorldUtil;
-import fr.pandacube.lib.util.Log;
-import net.md_5.bungee.api.ChatColor;
+import fr.pandacube.lib.paper.world.WorldUtil;
+import fr.pandacube.lib.util.log.Log;
 import org.bukkit.Bukkit;
 import org.bukkit.World;
 
@@ -11,14 +11,22 @@ import java.io.File;
 import java.text.DateFormat;
 import java.util.Date;
 
+/**
+ * A backup process with specific logic around Paper server world.
+ */
 public class PaperWorldProcess extends PaperBackupProcess {
 	private final String worldName;
 	
-	private boolean autoSave = true; 
-	
-	protected PaperWorldProcess(PaperBackupManager bm, final String n) {
-		super(bm, "worlds/" + n);
-		worldName = n;
+	private boolean autoSave = true;
+
+	/**
+	 * Instantiates a new backup process for a world.
+	 * @param bm the associated backup manager.
+	 * @param worldName the name of the world.
+	 */
+	protected PaperWorldProcess(PaperBackupManager bm, final String worldName) {
+		super(bm, "worlds/" + worldName);
+		this.worldName = worldName;
 	}
 	
 	private World getWorld() {
@@ -62,11 +70,11 @@ public class PaperWorldProcess extends PaperBackupProcess {
 
 	public void displayNextSchedule() {
 		if (hasNextScheduled()) {
-			Log.info("[Backup] " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " is dirty. Next backup on "
+			Log.info("[Backup] " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " is dirty. Next backup on "
 					+ DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG).format(new Date(getNext())));
 		}
 		else {
-			Log.info("[Backup] " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " is clean. Next backup not scheduled.");
+			Log.info("[Backup] " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " is clean. Next backup not scheduled.");
 		}
 	}
 
@@ -80,7 +88,7 @@ public class PaperWorldProcess extends PaperBackupProcess {
 	public void setDirtyAfterSave() {
 		if (!isDirty()) { // don't set dirty if it is already
 			setDirtySinceNow();
-			Log.info("[Backup] " + ChatColor.GRAY + getDisplayName() + ChatColor.RESET + " was saved and is now dirty. Next backup on "
+			Log.info("[Backup] " + LegacyChatFormat.GRAY + getDisplayName() + LegacyChatFormat.RESET + " was saved and is now dirty. Next backup on "
 					+ DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG)
 					.format(new Date(getNext()))
 			);

pandalib-paper/src/main/java/fr/pandacube/lib/paper/commands/PaperBrigadierCommand.java

@@ -1,8 +1,8 @@
 package fr.pandacube.lib.paper.commands;
 
-import com.destroystokyo.paper.brigadier.BukkitBrigadierCommandSource;
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.arguments.ArgumentType;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import com.mojang.brigadier.context.CommandContext;
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import com.mojang.brigadier.suggestion.SuggestionProvider;
@@ -10,118 +10,128 @@ import com.mojang.brigadier.tree.CommandNode;
 import com.mojang.brigadier.tree.LiteralCommandNode;
 import com.mojang.brigadier.tree.RootCommandNode;
 import fr.pandacube.lib.chat.Chat;
+import fr.pandacube.lib.commands.BadCommandUsage;
 import fr.pandacube.lib.commands.BrigadierCommand;
 import fr.pandacube.lib.commands.SuggestionsSupplier;
-import fr.pandacube.lib.paper.permissions.PandalibPaperPermissions;
-import fr.pandacube.lib.paper.reflect.PandalibPaperReflect;
-import fr.pandacube.lib.paper.reflect.wrapper.craftbukkit.CraftServer;
+import fr.pandacube.lib.paper.PandaLibPaper;
 import fr.pandacube.lib.paper.reflect.wrapper.craftbukkit.CraftVector;
 import fr.pandacube.lib.paper.reflect.wrapper.craftbukkit.VanillaCommandWrapper;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.BlockPosArgument;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.Commands;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.ComponentArgument;
 import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.Coordinates;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.EntityArgument;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.EntitySelector;
 import fr.pandacube.lib.paper.reflect.wrapper.minecraft.commands.Vec3Argument;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.core.BlockPos;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.server.ServerPlayer;
-import fr.pandacube.lib.paper.reflect.wrapper.paper.PaperAdventure;
+import fr.pandacube.lib.paper.reflect.wrapper.paper.commands.BukkitCommandNode;
+import fr.pandacube.lib.paper.reflect.wrapper.paper.commands.PluginCommandNode;
 import fr.pandacube.lib.players.standalone.AbstractOffPlayer;
 import fr.pandacube.lib.players.standalone.AbstractOnlinePlayer;
 import fr.pandacube.lib.players.standalone.AbstractPlayerManager;
-import fr.pandacube.lib.reflect.wrapper.ReflectWrapper;
-import fr.pandacube.lib.util.Log;
-import net.kyori.adventure.text.Component;
+import fr.pandacube.lib.reflect.Reflect;
+import fr.pandacube.lib.reflect.ReflectClass;
+import fr.pandacube.lib.util.log.Log;
+import io.papermc.paper.command.brigadier.CommandSourceStack;
+import io.papermc.paper.plugin.lifecycle.event.types.LifecycleEvents;
 import org.bukkit.Bukkit;
 import org.bukkit.World;
 import org.bukkit.command.Command;
-import org.bukkit.command.CommandMap;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
 import org.bukkit.command.PluginCommand;
-import org.bukkit.command.defaults.BukkitCommand;
-import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerCommandSendEvent;
-import org.bukkit.event.server.ServerLoadEvent;
 import org.bukkit.plugin.Plugin;
-import org.bukkit.util.BlockVector;
 import org.bukkit.util.Vector;
 
-import java.util.ArrayList;
+import java.lang.reflect.InvocationTargetException;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.function.Predicate;
 import java.util.stream.Stream;
 
-import static fr.pandacube.lib.util.ThrowableUtil.wrapEx;
+import static fr.pandacube.lib.reflect.wrapper.ReflectWrapper.unwrap;
+import static fr.pandacube.lib.reflect.wrapper.ReflectWrapper.wrap;
 
 /**
  * Abstract class to hold a command to be integrated into a Paper server vanilla command dispatcher.
  */
-public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBrigadierCommandSource> implements Listener {
+@SuppressWarnings("UnstableApiUsage")
+public abstract class PaperBrigadierCommand extends BrigadierCommand<CommandSourceStack> implements Listener {
 
-    private static final Commands vanillaCommandDispatcher;
-    private static final CommandDispatcher<BukkitBrigadierCommandSource> nmsDispatcher;
+    private static CommandDispatcher<CommandSourceStack> vanillaPaperDispatcher = null;
 
-    static {
-        wrapEx(PandalibPaperReflect::init);
-        vanillaCommandDispatcher = ReflectWrapper.wrapTyped(Bukkit.getServer(), CraftServer.class)
-                .getServer()
-                .vanillaCommandDispatcher();
-        nmsDispatcher = vanillaCommandDispatcher.dispatcher();
+    /**
+     * Gets the Brigadier dispatcher provided by paper API during {@link LifecycleEvents#COMMANDS}.
+     * <p>
+     * This Dispatcher is not the vanilla one. Instead, Paper implementation wraps the vanilla one to handle proper registration
+     * of commands from plugins.
+     * @return the Brigadier dispatcher.
+     */
+    public static CommandDispatcher<CommandSourceStack> getVanillaPaperDispatcher() {
+        return vanillaPaperDispatcher;
     }
 
+    /**
+     * Gets the root node of the dispatcher from {@link #getVanillaPaperDispatcher()}.
+     * @return the root node, or null if {@link #getVanillaPaperDispatcher()} is also null.
+     */
+    public static RootCommandNode<CommandSourceStack> getRootNode() {
+        return vanillaPaperDispatcher == null ? null : vanillaPaperDispatcher.getRoot();
+    }
+
+    private static void updateVanillaPaperDispatcher(CommandDispatcher<CommandSourceStack> newDispatcher) {
+        if (vanillaPaperDispatcher == null || newDispatcher != vanillaPaperDispatcher) {
+            vanillaPaperDispatcher = newDispatcher;
+
+            // vanillaPaperDispatcher.getRoot() is not the real root but a wrapped root. Trying to map the fake root with the real one to trick the Paper/Brigadier (un)wrapper
+            RootCommandNode<CommandSourceStack> wrappedRoot = vanillaPaperDispatcher.getRoot();
+            ReflectClass<?> apiMirrorRootNodeClass = Reflect.ofClassOfInstance(wrappedRoot);
+            try {
+                RootCommandNode<?> unwrappedRoot = ((CommandDispatcher<?>) apiMirrorRootNodeClass.method("getDispatcher").invoke(wrappedRoot)).getRoot();
+
+                Reflect.ofClass(CommandNode.class).field("unwrappedCached").setValue(wrappedRoot, unwrappedRoot);
+                Reflect.ofClass(CommandNode.class).field("wrappedCached").setValue(unwrappedRoot, wrappedRoot);
+
+            } catch (InvocationTargetException|IllegalAccessException|NoSuchMethodException|NoSuchFieldException e) {
+                Log.severe("Unable to trick the Paper/Brigadier unwrapper to properly handle commands redirecting to root command node.", e);
+            }
+        }
+    }
+
+
+
     /**
      * Removes a plugin command that overrides a vanilla command, so the vanilla command functionalities are fully
      * restored (so, not only the usage, but also the suggestions and the command structure sent to the client).
      * @param name the name of the command to restore.
      */
     public static void restoreVanillaCommand(String name) {
-        CommandMap bukkitCmdMap = Bukkit.getCommandMap();
-        Command bukkitCommand = bukkitCmdMap.getCommand(name);
-        if (bukkitCommand != null) {
-            if (VanillaCommandWrapper.REFLECT.get().isInstance(bukkitCommand)) {
-                //Log.info("Command /" + name + " is already a vanilla command.");
+
+        PandaLibPaper.getPlugin().getLifecycleManager().registerEventHandler(LifecycleEvents.COMMANDS,
+                event -> updateVanillaPaperDispatcher(event.registrar().getDispatcher()));
+
+
+        Bukkit.getServer().getScheduler().runTask(PandaLibPaper.getPlugin(), () -> {
+            if (vanillaPaperDispatcher == null)
+                return;
+
+            CommandNode<CommandSourceStack> targetCommand = vanillaPaperDispatcher.getRoot().getChild("minecraft:" + name);
+            if (targetCommand == null) {
+                Log.warning("There is no vanilla command '" + name + "' to restore.");
                 return;
             }
-            Log.info("Removing Bukkit command /" + name + " (" + getCommandIdentity(bukkitCommand) + ")");
-            bukkitCmdMap.getKnownCommands().remove(name.toLowerCase(java.util.Locale.ENGLISH));
-            bukkitCommand.unregister(bukkitCmdMap);
 
-            LiteralCommandNode<BukkitBrigadierCommandSource> node = (LiteralCommandNode<BukkitBrigadierCommandSource>) getRootNode().getChild(name);
-            Command newCommand = new VanillaCommandWrapper(vanillaCommandDispatcher, node).__getRuntimeInstance();
-            bukkitCmdMap.getKnownCommands().put(name.toLowerCase(), newCommand);
-            newCommand.register(bukkitCmdMap);
-        }
+            CommandNode<CommandSourceStack> eventuallyBadCommandToReplace = vanillaPaperDispatcher.getRoot().getChild(name);
+            Boolean isPluginCommand = isPluginCommand(eventuallyBadCommandToReplace);
+            if (isPluginCommand != null && isPluginCommand) {
+                Log.info(getCommandIdentity(eventuallyBadCommandToReplace) + " found in the dispatcher. Restoring the vanilla command.");
+                vanillaPaperDispatcher.getRoot().getChildren().removeIf(c -> c.getName().equals(name));
+                vanillaPaperDispatcher.getRoot().addChild(getAliasNode(targetCommand, name));
+            }
+            /*else if (isPluginCommand == null) {
+                Log.info(getCommandIdentity(eventuallyBadCommandToReplace) + " found in the dispatcher. Unsure if we restore the vanilla command.");
+            }*/
+        });
     }
 
 
-    /**
-     * Returns the vanilla instance of the Brigadier dispatcher.
-     * @return the vanilla instance of the Brigadier dispatcher.
-     */
-    public static CommandDispatcher<BukkitBrigadierCommandSource> getNMSDispatcher() {
-        return nmsDispatcher;
-    }
-
-    /**
-     * Returns the root command node of the Brigadier dispatcher.
-     * @return the root command node of the Brigadier dispatcher.
-     */
-    protected static RootCommandNode<BukkitBrigadierCommandSource> getRootNode() {
-        return nmsDispatcher.getRoot();
-    }
-
-
-
-
-
-
 
 
 
@@ -130,7 +140,16 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
     /**
      * The command node of this command.
      */
-    protected final LiteralCommandNode<BukkitBrigadierCommandSource> commandNode;
+    protected LiteralCommandNode<CommandSourceStack> commandNode;
+    /**
+     * The command requested aliases.
+     */
+    protected final String[] aliases;
+
+    /**
+     * The command description.
+     */
+    protected final String description;
 
     private final RegistrationPolicy registrationPolicy;
 
@@ -145,13 +164,13 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
     public PaperBrigadierCommand(Plugin pl, RegistrationPolicy regPolicy) {
         plugin = pl;
         registrationPolicy = regPolicy;
-        commandNode = buildCommand().build();
-        postBuildCommand(commandNode);
+        String[] aliasesTmp = getAliases();
+        aliases = aliasesTmp == null ? new String[0] : aliasesTmp;
+        description = getDescription();
         register();
-        Bukkit.getPluginManager().registerEvents(this, plugin);
-        try {
-            PandalibPaperPermissions.addPermissionMapping("minecraft.command." + commandNode.getLiteral().toLowerCase(), getTargetPermission().toLowerCase());
-        } catch (NoClassDefFoundError ignored) { }
+        //try {
+        //    PandalibPaperPermissions.addPermissionMapping("minecraft.command." + commandNode.getLiteral().toLowerCase(), getTargetPermission().toLowerCase());
+        //} catch (NoClassDefFoundError ignored) { }
     }
 
     /**
@@ -166,163 +185,179 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
 
 
     private void register() {
+        plugin.getLifecycleManager().registerEventHandler(LifecycleEvents.COMMANDS, event -> {
+            updateVanillaPaperDispatcher(event.registrar().getDispatcher());
 
-        String[] aliases = getAliases();
-        if (aliases == null)
-            aliases = new String[0];
+            commandNode = buildCommand().build();
+            postBuildCommand(commandNode);
 
-        String pluginName = plugin.getName().toLowerCase();
+            if (vanillaPaperDispatcher.getRoot().getChild(commandNode.getName()) != null) {
+                Log.info("Command /" + commandNode.getName() + " found in the vanilla dispatcher during initial command registration. Replacing it by force.");
+                vanillaPaperDispatcher.getRoot().getChildren().removeIf(c -> c.getName().equals(commandNode.getName()));
+            }
 
-        registeredAliases = new HashSet<>();
-        registerNode(commandNode, false);
-        registerAlias(pluginName + ":" + commandNode.getLiteral(), true);
+            registeredAliases = new HashSet<>(event.registrar().register(commandNode, description, List.of(aliases)));
+            doPostRegistrationFixes();
 
-        for (String alias : aliases) {
-            registerAlias(alias, false);
-            registerAlias(pluginName + ":" + alias, true);
+            if (registrationPolicy == RegistrationPolicy.ALL) {
+                // enforce registration of aliases
+                for (String alias : aliases) {
+                    if (!registeredAliases.contains(alias)) {
+                        Log.info("Command /" + commandNode.getName() + ": forcing registration of alias " + alias);
+                        registeredAliases.addAll(event.registrar().register(getAliasNode(commandNode, alias), description));
+                    }
+                }
+            }
+
+
+            Bukkit.getServer().getScheduler().runTask(plugin, () -> {
+                if (vanillaPaperDispatcher == null)
+                    return;
+
+                Set<String> forceRegistrationAgain = new HashSet<>();
+                forceRegistrationAgain.add(commandNode.getName());
+                if (registrationPolicy == RegistrationPolicy.ALL)
+                    forceRegistrationAgain.addAll(List.of(aliases));
+
+                for (String aliasToForce : forceRegistrationAgain) {
+                    CommandNode<CommandSourceStack> actualNode = vanillaPaperDispatcher.getRoot().getChild(aliasToForce);
+                    if (actualNode != null) {
+                        //Log.info("Forcing registration of alias /" + aliasToForce + " for command /" + commandNode.getName() + ": replacing " + getCommandIdentity(actualNode) + "?");
+                        if (PluginCommandNode.REFLECT.get().isInstance(actualNode)) {
+                            PluginCommandNode pcn = wrap(actualNode, PluginCommandNode.class);
+                            if (pcn.getPlugin().equals(plugin))
+                                return;
+                        }
+                        else if (BukkitCommandNode.REFLECT.get().isInstance(actualNode)) {
+                            BukkitCommandNode bcn = wrap(actualNode, BukkitCommandNode.class);
+                            if (bcn.getBukkitCommand() instanceof PluginCommand pc && pc.getPlugin().equals(plugin))
+                                return;
+                        }
+                        vanillaPaperDispatcher.getRoot().getChildren().removeIf(c -> c.getName().equals(aliasToForce));
+                    }
+                /*else {
+                    Log.info("Forcing registration of alias /" + aliasToForce + " for command /" + commandNode.getName() + ": no command found for alias. Adding alias.");
+                }*/
+                    LiteralCommandNode<CommandSourceStack> newPCN = unwrap(new PluginCommandNode(aliasToForce, plugin.getPluginMeta(), commandNode, description));
+                    vanillaPaperDispatcher.getRoot().addChild(newPCN);
+                }
+            });
+
+        });
+
+    }
+
+
+
+
+    private void doPostRegistrationFixes() {
+        postRegistrationFixNode(new HashSet<>(), commandNode);
+    }
+
+    private void postRegistrationFixNode(Set<CommandNode<CommandSourceStack>> fixedNodes, CommandNode<CommandSourceStack> originalNode) {
+        if (originalNode instanceof RootCommandNode)
+            return;
+        if (fixedNodes.contains(originalNode))
+            return;
+        fixedNodes.add(originalNode);
+        if (originalNode.getRedirect() != null) {
+            try {
+                @SuppressWarnings("rawtypes")
+                ReflectClass<CommandNode> cmdNodeClass = Reflect.ofClass(CommandNode.class);
+                @SuppressWarnings("unchecked")
+                CommandNode<CommandSourceStack> unwrappedNode = (CommandNode<CommandSourceStack>) cmdNodeClass.field("unwrappedCached").getValue(originalNode);
+                if (unwrappedNode != null) {
+                    cmdNodeClass.field("modifier").setValue(unwrappedNode, cmdNodeClass.field("modifier").getValue(originalNode));
+                    cmdNodeClass.field("forks").setValue(unwrappedNode, cmdNodeClass.field("forks").getValue(originalNode));
+                }
+            } catch (IllegalAccessException | NoSuchFieldException e) {
+                throw new RuntimeException(e);
+            }
+
+            postRegistrationFixNode(fixedNodes, originalNode.getRedirect());
+        }
+        else {
+            try {
+                for (CommandNode<CommandSourceStack> child : originalNode.getChildren())
+                    postRegistrationFixNode(fixedNodes, child);
+            } catch (UnsupportedOperationException ignored) {
+                // in case getChildren is not possible (vanilla commands are wrapped by Paper API)
+            }
         }
     }
 
 
-    private void registerAlias(String alias, boolean prefixed) {
-        LiteralCommandNode<BukkitBrigadierCommandSource> node = literal(alias)
+    private static LiteralCommandNode<CommandSourceStack> getAliasNode(CommandNode<CommandSourceStack> commandNode, String alias) {
+         return LiteralArgumentBuilder.<CommandSourceStack>literal(alias)
                 .requires(commandNode.getRequirement())
                 .executes(commandNode.getCommand())
                 .redirect(commandNode)
                 .build();
-        registerNode(node, prefixed);
     }
 
-
-    private void registerNode(LiteralCommandNode<BukkitBrigadierCommandSource> node, boolean prefixed) {
-        RootCommandNode<BukkitBrigadierCommandSource> root = getRootNode();
-        String name = node.getLiteral();
-        boolean isAlias = node.getRedirect() == commandNode;
-        boolean forceRegistration = switch (registrationPolicy) {
-            case NONE -> false;
-            case ONLY_BASE_COMMAND -> prefixed || !isAlias;
-            case ALL -> true;
-        };
-
-        // nmsDispatcher integration and conflit resolution
-        boolean nmsRegister = false, nmsRegistered = false;
-        CommandNode<BukkitBrigadierCommandSource> nmsConflicted = root.getChild(name);
-        if (nmsConflicted != null) {
-
-            if (isFromThisCommand(nmsConflicted)) {
-                // this command is already registered in NMS. Don’t need to register again
-                nmsRegistered = true;
+    private static String getCommandIdentity(CommandNode<CommandSourceStack> command) {
+        if (PluginCommandNode.REFLECT.get().isInstance(command)) {
+            PluginCommandNode wrappedPCN = wrap(command, PluginCommandNode.class);
+            return "Node /" + command.getName() + " from plugin " + wrappedPCN.getPlugin().getName();
+        }
+        else if (BukkitCommandNode.REFLECT.get().isInstance(command)) {
+            BukkitCommandNode wrappedBCN = wrap(command, BukkitCommandNode.class);
+            Command bukkitCmd = wrappedBCN.getBukkitCommand();
+            if (bukkitCmd instanceof PluginCommand cmd) {
+                return "Node /" + command.getName() + " wrapping Bukkit command /" + bukkitCmd.getName() + " from plugin " + cmd.getPlugin().getName();
             }
-            else if (forceRegistration) {
-                nmsRegister = true;
-                Log.info("Overwriting Brigadier command /" + name);
-            }
-            else if (prefixed || !isAlias) {
-                Log.severe("/" + name + " already in NMS Brigadier instance."
-                        + " Wont replace it because registration is not forced for prefixed or initial name of a command.");
-            }
-            else { // conflict, won't replace, not forced but only an alias anyway
-                Log.info("/" + name + " already in NMS Brigadier instance."
-                        + " Wont replace it because registration is not forced for a non-prefixed alias.");
+            else if (VanillaCommandWrapper.REFLECT.get().isInstance(bukkitCmd)) {
+                VanillaCommandWrapper vcw = wrap(bukkitCmd, VanillaCommandWrapper.class);
+                CommandNode<CommandSourceStack> vanillaCmd = vcw.vanillaCommand();
+                if (vanillaCmd != command)
+                    return "Node /" + command.getName() + " wrapping non-plugin command /" + bukkitCmd.getName() + " wrapping: " + getCommandIdentity(vcw.vanillaCommand());
+                else
+                    return "Node /" + command.getName() + " wrapping non-plugin command /" + bukkitCmd.getName() + " wrapping back the node (risk of StackOverflow?)";
             }
+            else
+                return "Node /" + command.getName() + " wrapping " + bukkitCmd.getClass().getName() + " /" + bukkitCmd.getName();
         }
         else {
-            nmsRegister = true;
+            return "Node /" + command.getName() + " (unspecific)";
         }
+    }
 
-        if (nmsRegister) {
-            @SuppressWarnings("unchecked")
-            var rCommandNode = ReflectWrapper.wrapTyped(root, fr.pandacube.lib.paper.reflect.wrapper.brigadier.CommandNode.class);
-            rCommandNode.removeCommand(name);
-            root.addChild(node);
-            nmsRegistered = true;
+
+    private static Boolean isPluginCommand(CommandNode<CommandSourceStack> command) {
+        if (PluginCommandNode.REFLECT.get().isInstance(command)) {
+            return true;
         }
-
-        if (!nmsRegistered) {
-            return;
-        }
-
-        registeredAliases.add(name);
-
-        // bukkit dispatcher conflict resolution
-        boolean bukkitRegister = false;
-        CommandMap bukkitCmdMap = Bukkit.getCommandMap();
-        Command bukkitConflicted = bukkitCmdMap.getCommand(name);
-        if (bukkitConflicted != null) {
-            if (!isFromThisCommand(bukkitConflicted)) {
-                if (forceRegistration) {
-                    bukkitRegister = true;
-                    Log.info("Overwriting Bukkit command /" + name
-                            + " (" + getCommandIdentity(bukkitConflicted) + ")");
-                }
-                else if (prefixed || !isAlias) {
-                    Log.severe("/" + name + " already in Bukkit dispatcher (" + getCommandIdentity(bukkitConflicted) + ")." +
-                            " Wont replace it because registration is not forced for prefixed or initial name of a command.");
-                }
-                else {
-                    Log.info("/" + name + " already in Bukkit dispatcher (" + getCommandIdentity(bukkitConflicted) + ")." +
-                            " Wont replace it because registration is not forced for a non-prefixed alias.");
-                }
+        else if (BukkitCommandNode.REFLECT.get().isInstance(command)) {
+            BukkitCommandNode wrappedBCN = wrap(command, BukkitCommandNode.class);
+            Command bukkitCmd = wrappedBCN.getBukkitCommand();
+            if (bukkitCmd instanceof PluginCommand) {
+                return true;
             }
+            else if (VanillaCommandWrapper.REFLECT.get().isInstance(bukkitCmd)) {
+                VanillaCommandWrapper vcw = wrap(bukkitCmd, VanillaCommandWrapper.class);
+                CommandNode<CommandSourceStack> vanillaCmd = vcw.vanillaCommand();
+                if (vanillaCmd != command)
+                    return isPluginCommand(vcw.vanillaCommand());
+                else
+                    return false;
+            }
+            else
+                return null;
         }
         else {
-            bukkitRegister = true;
+            return false;
         }
-
-        if (bukkitRegister) {
-            bukkitCmdMap.getKnownCommands().remove(name.toLowerCase());
-            if (bukkitConflicted != null)
-                bukkitConflicted.unregister(bukkitCmdMap);
-
-            Command newCommand = new VanillaCommandWrapper(vanillaCommandDispatcher, node).__getRuntimeInstance();
-            bukkitCmdMap.getKnownCommands().put(name.toLowerCase(), newCommand);
-            newCommand.register(bukkitCmdMap);
-        }
-
     }
 
-    private boolean isFromThisCommand(CommandNode<BukkitBrigadierCommandSource> node) {
-        return node == commandNode || node.getRedirect() == commandNode;
-    }
-
-    private boolean isFromThisCommand(Command bukkitCmd) {
-        if (VanillaCommandWrapper.REFLECT.get().isInstance(bukkitCmd)) {
-            return isFromThisCommand(ReflectWrapper.wrapTyped((BukkitCommand) bukkitCmd, VanillaCommandWrapper.class).vanillaCommand());
-        }
-        return false;
-    }
-
-    private static String getCommandIdentity(Command bukkitCmd) {
-        if (bukkitCmd instanceof PluginCommand cmd) {
-            return "Bukkit command: /" + cmd.getName() + " from plugin " + cmd.getPlugin().getName();
-        }
-        else if (VanillaCommandWrapper.REFLECT.get().isInstance(bukkitCmd)) {
-            return "Vanilla command: /" + bukkitCmd.getName();
-        }
-        else
-            return bukkitCmd.getClass().getName() + ": /" + bukkitCmd.getName();
-    }
-
-
     /**
-     * Player command sender event handler.
-     * @param event the event.
+     * Gets the aliases that are actually registered in the server.
+     * @return the actually registered aliases.
      */
-    @EventHandler
-    public void onPlayerCommandSend(PlayerCommandSendEvent event) {
-        event.getCommands().removeAll(registeredAliases.stream().map(s -> "minecraft:" + s).toList());
+    protected Set<String> getRegisteredAliases() {
+        return Set.copyOf(registeredAliases);
     }
 
 
-    /**
-     * Server load event handler.
-     * @param event the event.
-     */
-    @EventHandler
-    public void onServerLoad(ServerLoadEvent event) {
-        register();
-    }
-
 
 
 
@@ -341,6 +376,15 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      */
     protected abstract String getTargetPermission();
 
+    /**
+     * Returns the permission that should be tested instead of "minecraft.command.cmdName". The conversion from the
+     * minecraft prefixed permission node to the returned node is done by the {@code pandalib-paper-permissions} if it
+     * is present in the classpath during runtime.
+     * @return the permission that should be tested instead of "minecraft.command.cmdName".
+     */
+    protected String getDescription() {
+        return "A command from " + plugin.getName();
+    }
 
 
 
@@ -354,13 +398,17 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
 
 
 
-    public boolean isConsole(BukkitBrigadierCommandSource wrapper) {
+
+    @Override
+    public boolean isConsole(CommandSourceStack wrapper) {
         return isConsole(getCommandSender(wrapper));
     }
-    public boolean isPlayer(BukkitBrigadierCommandSource wrapper) {
+    @Override
+    public boolean isPlayer(CommandSourceStack wrapper) {
         return isPlayer(getCommandSender(wrapper));
     }
-    public Predicate<BukkitBrigadierCommandSource> hasPermission(String permission) {
+    @Override
+    public Predicate<CommandSourceStack> hasPermission(String permission) {
         return wrapper -> getCommandSender(wrapper).hasPermission(permission);
     }
 
@@ -394,7 +442,7 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param context the command context from which to get the Bukkit command sender.
      * @return the Bukkit command sender.
      */
-    public static CommandSender getCommandSender(CommandContext<BukkitBrigadierCommandSource> context) {
+    public static CommandSender getCommandSender(CommandContext<CommandSourceStack> context) {
         return getCommandSender(context.getSource());
     }
 
@@ -403,8 +451,8 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param wrapper the wrapper from which to get the Bukkit command sender.
      * @return the Bukkit command sender.
      */
-    public static CommandSender getCommandSender(BukkitBrigadierCommandSource wrapper) {
-        return wrapper.getBukkitSender();
+    public static CommandSender getCommandSender(CommandSourceStack wrapper) {
+        return wrapper.getSender();
     }
 
     /**
@@ -412,8 +460,8 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param sender the command sender.
      * @return a new instance of a command sender wrapper for the provided command sender.
      */
-    public static BukkitBrigadierCommandSource getBrigadierCommandSource(CommandSender sender) {
-        return VanillaCommandWrapper.getListener(sender);
+    public static CommandSourceStack getBrigadierCommandSource(CommandSender sender) {
+        throw new UnsupportedOperationException("The 1.20.6 Paper API update uses a different wrapper for Brigadier command sender.");
     }
 
 
@@ -442,7 +490,7 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param suggestions the suggestions to wrap.
      * @return a {@link SuggestionProvider} generating the suggestions from the provided {@link SuggestionsSupplier}.
      */
-    protected SuggestionProvider<BukkitBrigadierCommandSource> wrapSuggestions(SuggestionsSupplier<CommandSender> suggestions) {
+    public SuggestionProvider<CommandSourceStack> wrapSuggestions(SuggestionsSupplier<CommandSender> suggestions) {
         return wrapSuggestions(suggestions, PaperBrigadierCommand::getCommandSender);
     }
 
@@ -455,12 +503,15 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param cmd the command executor to wrap.
      * @return a wrapper command executor.
      */
-    protected static com.mojang.brigadier.Command<BukkitBrigadierCommandSource> wrapCommand(com.mojang.brigadier.Command<BukkitBrigadierCommandSource> cmd) {
+    protected static com.mojang.brigadier.Command<CommandSourceStack> wrapCommand(com.mojang.brigadier.Command<CommandSourceStack> cmd) {
         return context -> {
             try {
                 return cmd.run(context);
             } catch(CommandSyntaxException e) {
                 throw e;
+            } catch (BadCommandUsage e) {
+                getCommandSender(context).sendMessage(Chat.failureText("Error while using the command: " + e.getMessage()));
+                return 0;
             } catch (Throwable t) {
                 Log.severe(t);
                 getCommandSender(context).sendMessage(Chat.failureText("Error while executing the command: " + t));
@@ -480,117 +531,6 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * Minecraft's argument type
      */
 
-
-    /**
-     * Creates a new instance of the Brigadier argument type {@code minecraft:entity}.
-     * @param singleTarget if this argument takes only a single target.
-     * @param playersOnly if this argument takes players only.
-     * @return the {@code minecraft:entity} argument type with the specified parameters.
-     */
-    public static ArgumentType<Object> argumentMinecraftEntity(boolean singleTarget, boolean playersOnly) {
-        if (playersOnly) {
-            return singleTarget ? EntityArgument.player() : EntityArgument.players();
-        }
-        else {
-            return singleTarget ? EntityArgument.entity() : EntityArgument.entities();
-        }
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:entity} (list of entities), from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @return the value of the argument, or null if not found.
-     */
-    public List<Entity> tryGetMinecraftEntityArgument(CommandContext<BukkitBrigadierCommandSource> context, String argument) {
-        EntitySelector es = ReflectWrapper.wrap(tryGetArgument(context, argument, EntitySelector.MAPPING.runtimeClass()), EntitySelector.class);
-        if (es == null)
-            return null;
-        List<fr.pandacube.lib.paper.reflect.wrapper.minecraft.world.Entity> nmsEntityList = es.findEntities(context.getSource());
-        List<Entity> entityList = new ArrayList<>(nmsEntityList.size());
-        for (fr.pandacube.lib.paper.reflect.wrapper.minecraft.world.Entity nmsEntity : nmsEntityList) {
-            entityList.add(nmsEntity.getBukkitEntity());
-        }
-        return entityList;
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:entity} (list of players), from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @return the value of the argument, or null if not found.
-     */
-    public List<Player> tryGetMinecraftEntityArgumentPlayers(CommandContext<BukkitBrigadierCommandSource> context, String argument) {
-        EntitySelector es = ReflectWrapper.wrap(tryGetArgument(context, argument, EntitySelector.MAPPING.runtimeClass()), EntitySelector.class);
-        if (es == null)
-            return null;
-        List<ServerPlayer> nmsPlayerList = es.findPlayers(context.getSource());
-        List<Player> playerList = new ArrayList<>(nmsPlayerList.size());
-        for (ServerPlayer nmsPlayer : nmsPlayerList) {
-            playerList.add(nmsPlayer.getBukkitEntity());
-        }
-        return playerList;
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:entity} (one entity), from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @return the value of the argument, or null if not found.
-     */
-    public Entity tryGetMinecraftEntityArgumentOneEntity(CommandContext<BukkitBrigadierCommandSource> context, String argument) {
-        EntitySelector es = ReflectWrapper.wrap(tryGetArgument(context, argument, EntitySelector.MAPPING.runtimeClass()), EntitySelector.class);
-        if (es == null)
-            return null;
-        fr.pandacube.lib.paper.reflect.wrapper.minecraft.world.Entity nmsEntity = es.findSingleEntity(context.getSource());
-        return nmsEntity == null ? null : nmsEntity.getBukkitEntity();
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:entity} (one player), from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @return the value of the argument, or null if not found.
-     */
-    public Player tryGetMinecraftEntityArgumentOnePlayer(CommandContext<BukkitBrigadierCommandSource> context, String argument) {
-        EntitySelector es = ReflectWrapper.wrap(tryGetArgument(context, argument, EntitySelector.MAPPING.runtimeClass()), EntitySelector.class);
-        if (es == null)
-            return null;
-        ServerPlayer nmsPlayer = es.findSinglePlayer(context.getSource());
-        return nmsPlayer == null ? null : nmsPlayer.getBukkitEntity();
-    }
-
-
-
-
-
-
-    /**
-     * Creates a new instance of the Brigadier argument type {@code minecraft:block_pos}.
-     * @return the {@code minecraft:block_pos} argument type.
-     */
-    public static ArgumentType<Object> argumentMinecraftBlockPosition() {
-        return BlockPosArgument.blockPos();
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:block_pos}, from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @param deflt a default value if the argument is not found.
-     * @return the value of the argument.
-     */
-    public BlockVector tryGetMinecraftBlockPositionArgument(CommandContext<BukkitBrigadierCommandSource> context,
-                                                            String argument, BlockVector deflt) {
-        return tryGetArgument(context, argument, Coordinates.MAPPING.runtimeClass(), nmsCoordinate -> {
-            BlockPos bp = ReflectWrapper.wrap(nmsCoordinate, Coordinates.class).getBlockPos(context.getSource());
-            return new BlockVector(bp.getX(), bp.getY(), bp.getZ());
-        }, deflt);
-    }
-
-
-
-
     /**
      * Creates a new instance of the Brigadier argument type {@code minecraft:vec3}.
      * @return the {@code minecraft:vec3} argument type.
@@ -606,11 +546,11 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
      * @param deflt a default value if the argument is not found.
      * @return the value of the argument.
      */
-    public Vector tryGetMinecraftVec3Argument(CommandContext<BukkitBrigadierCommandSource> context, String argument,
+    public Vector tryGetMinecraftVec3Argument(CommandContext<CommandSourceStack> context, String argument,
                                               Vector deflt) {
-        return tryGetArgument(context, argument, Coordinates.MAPPING.runtimeClass(),
+        return tryGetArgument(context, argument, Coordinates.REFLECT.get(),
                 nmsCoordinate -> CraftVector.toBukkit(
-                        ReflectWrapper.wrap(nmsCoordinate, Coordinates.class).getPosition(context.getSource())
+                        wrap(nmsCoordinate, Coordinates.class).getPosition(context.getSource())
                 ),
                 deflt);
     }
@@ -618,44 +558,11 @@ public abstract class PaperBrigadierCommand extends BrigadierCommand<BukkitBriga
 
 
 
-    /**
-     * Creates a new instance of the Brigadier argument type {@code minecraft:component}.
-     * @return the {@code minecraft:component} argument type.
-     */
-    public static ArgumentType<Object> argumentMinecraftChatComponent() {
-        return ComponentArgument.textComponent();
-    }
-
-    /**
-     * Gets the value of the provided argument of type {@code minecraft:component}, from the provided context.
-     * @param context the command execution context.
-     * @param argument the argument name.
-     * @param deflt a default value if the argument is not found.
-     * @return the value of the argument.
-     */
-    public Component tryGetMinecraftChatComponentArgument(CommandContext<BukkitBrigadierCommandSource> context,
-                                                          String argument, Component deflt) {
-        return tryGetArgument(context, argument,
-                fr.pandacube.lib.paper.reflect.wrapper.minecraft.network.chat.Component.MAPPING.runtimeClass(),
-                nmsComp -> PaperAdventure.asAdventure(
-                        ReflectWrapper.wrap(nmsComp,
-                                fr.pandacube.lib.paper.reflect.wrapper.minecraft.network.chat.Component.class)
-                ),
-                deflt);
-
-    }
-
 
     /**
      * All possible choices on how to force the registration of a command, based on certain conditions.
      */
     public enum RegistrationPolicy {
-        /**
-         * Do not force to register a command node or an alias if there is already a command with that name in the
-         * vanilla Brigadier dispatcher.
-         * Note that all plugin-name-prefixed aliases will be registered anyway.
-         */
-        NONE,
         /**
          * Force only the base command (but not the aliases) to be registered, even if a command with that name already
          * exists in the vanilla Brigadier dispatcher.

pandalib-paper/src/main/java/fr/pandacube/lib/paper/event/ServerStopEvent.java

@@ -0,0 +1,79 @@
+package fr.pandacube.lib.paper.event;
+
+import fr.pandacube.lib.paper.util.BukkitEvent;
+import org.bukkit.Bukkit;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.Listener;
+import org.bukkit.event.server.PluginDisableEvent;
+import org.bukkit.event.server.ServerEvent;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Fired at the beginning of the server stop process.
+ * More specifically, this event is called when the first plugin is disabling ({@link PluginDisableEvent}) while
+ * {@link Bukkit#isStopping()} returns true.
+ * <p>
+ * This event can be useful when a plugin want to execute stuff on server stop as soon as possible in the process,
+ * but not when the plugin itself is disabling (because some part of the Bukkit API is not usable at that moment).
+ */
+public class ServerStopEvent extends ServerEvent {
+
+
+    private static final HandlerList handlers = new HandlerList();
+
+    /**
+     * Gets the handler list of the event.
+     * @return the handler list of the event.
+     */
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    private static boolean hasTriggered = false;
+    private static boolean isInit = false;
+
+    /**
+     * Register the event used to detect the server stop.
+     */
+    public static void init() {
+        if (isInit)
+            return;
+
+        BukkitEvent.register(new Listener() {
+
+            @EventHandler(priority = EventPriority.LOWEST)
+            public void onPluginDisable(PluginDisableEvent event) {
+                if (!Bukkit.isStopping())
+                    return;
+                if (hasTriggered)
+                    return;
+                hasTriggered = true;
+                new ServerStopEvent().callEvent();
+            }
+
+        });
+
+        isInit = true;
+    }
+
+
+
+
+
+    private ServerStopEvent() {}
+
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+
+
+
+
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/geometry/DirectionalVector.java

@@ -0,0 +1,232 @@
+package fr.pandacube.lib.paper.geometry;
+
+import org.bukkit.Location;
+import org.bukkit.util.Vector;
+
+/**
+ * This vector considers Minecraft X Y Z axis orientation,
+ * but consider standard (not Minecraft) radian values for yaw and pitch.<br/>
+ * The length of this Vector (based on {@link #x}, {@link #y} and {@link #z} values)
+ * Is always 1.
+ *
+ * <pre>Yaw :
+ * North (-z) = -PI/2
+ * East  (+x) = 0
+ * South (+z) = PI/2
+ * West  (-x) = ±PI
+ *
+ * Pitch :
+ * Up   (+y) = PI/2
+ * Down (-y) = -PI/2</pre>
+ */
+public class DirectionalVector {
+    /**
+     * The X cartesian coordinate of this {@link DirectionalVector}.
+     * It corresponds to the X (west to east) axis in a Minecraft world.
+     */
+    public final double x;
+
+    /**
+     * The Y cartesian coordinate of this {@link DirectionalVector}.
+     * It corresponds to the Y (bottom to top) axis in a Minecraft world.
+     */
+    public final double y;
+
+    /**
+     * The Z cartesian coordinate of this {@link DirectionalVector}.
+     * It corresponds to the Z (north to south) axis in a Minecraft world.
+     */
+    public final double z;
+
+    /**
+     * The azimuthal angle φ (phi) of this {@link DirectionalVector}, in radian.
+     * It corresponds with Minecraft world as follows :
+     * <pre>Yaw :
+     * North (-z) = -PI/2
+     * East  (+x) = 0
+     * South (+z) = PI/2
+     * West  (-x) = ±PI</pre>
+     */
+    public final double yaw;
+
+    /**
+     * The polar angle θ (theta) of this {@link DirectionalVector}, in radian.
+     * It corresponds with Minecraft world as follows :
+     * <pre>Pitch :
+     * Down (-y) = -PI/2
+     * Up   (+y) = PI/2</pre>
+     */
+    public final double pitch;
+
+    /**
+     * Initialize this {@link DirectionalVector} with the yaw and pitch
+     * contained in the provided {@link Location}.
+     * {@link Location#getYaw()} and {@link Location#getPitch()} values are automatically
+     * converted to conform {@link #yaw} and {@link #pitch} specification.
+     * @param l the location.
+     */
+    public DirectionalVector(Location l) {
+        this(
+                Math.toRadians(((l.getYaw() + 90) % 360) > 180 ? ((l.getYaw() + 90) % 360) - 360 : ((l.getYaw() + 90) % 360)),
+                -Math.toRadians(l.getPitch())
+        );
+        /*              MC     : +90    : %360   : >180 -> -360
+         * South (+z) = 0, 360 : 90-450 : 90     : 90         : PI/2
+         * West  (-x) = 90     : 180    : 180    : ±180       : ±PI
+         * North (-z) = 180    : 270    : 270    : -90        : -PI/2
+         * East  (+x) = 270    : 360    : 0-360  : 0          : 0
+         */
+    }
+
+
+    /**
+     * Creates a new {@link DirectionalVector} from a simple {@link Vector}.
+     * @param v the vector representing the direction. If v.getX() and v.getZ() are 0,
+     *          the yaw will be 0. This may have inconsistency if the vector is calculated
+     *          from a {@link Location}'s yaw and pitch. In this case, prefer using
+     *          {@link #DirectionalVector(Location)}. The {@link Vector} is
+     *          normalized if necessary (does not modify the provided {@link Vector}).
+     */
+    public DirectionalVector(Vector v) {
+        this(v.getX(), v.getY(), v.getZ());
+        // this((v = v.clone().normalize()).getX(), v.getY(), v.getZ());
+    }
+
+
+    private DirectionalVector(double x, double y, double z) {
+        double vecSize = Math.sqrt(x * x + y * y + z * z);
+        this.x = x / vecSize;
+        this.y = y / vecSize;
+        this.z = z / vecSize;
+
+        if (x == 0.0 && z == 0.0) {
+            pitch = y > 0.0 ? GeometryUtil.PId2 : -GeometryUtil.PId2;
+            yaw = 0;
+        } else {
+            yaw = Math.atan2(z, x);
+            pitch = Math.atan(y / Math.sqrt(x * x + z * z));
+        }
+    }
+
+    private DirectionalVector(double x, double y, double z, double yaw, double pitch) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.yaw = yaw;
+        this.pitch = pitch;
+    }
+
+    private DirectionalVector(double yaw, double pitch) {
+        this.yaw = yaw;
+        this.pitch = pitch;
+
+        y = Math.sin(pitch);
+
+        double cosPitch = Math.cos(pitch);
+        x = cosPitch * Math.cos(yaw);
+        z = cosPitch * Math.sin(yaw);
+
+    }
+
+    /**
+     * Gets a Vector using the internal X, Y and Z values, that is a simple directional 3D vector.
+     * @return this vector as a simple 3D {@link Vector}.
+     */
+    public Vector toVector() {
+        return new Vector(x, y, z);
+    }
+
+
+    /**
+     * Set the yaw and the pitch of the provided {@link Location}
+     * with the values inside the current {@link DirectionalVector}
+     * after conversion of these values.
+     * @param l the location.
+     */
+    public void putIntoLocation(Location l) {
+        /*              std   : -PI/2         : <0 ? +2PI : MC
+         * South (+z) = PI/2  : 0             : 0         : 0, 360
+         * West  (-x) = ±PI   : -3PI/2 - PI/2 : PI/2      : 90
+         * North (-z) = -PI/2 : -PI           : PI        : 180
+         * East  (+x) = 0     : -PI/2         : 3PI/2     : 270
+         */
+        l.setYaw((float) Math.toDegrees(yaw < GeometryUtil.PId2 ? yaw + GeometryUtil.PIx2 - GeometryUtil.PId2 : yaw - GeometryUtil.PId2));
+        l.setPitch((float) Math.toDegrees(-pitch));
+    }
+
+    /**
+     * Gets the vector pointing to the opposite direction.
+     * @return the opposite vector.
+     */
+    public DirectionalVector getOpposite() {
+        return new DirectionalVector(
+                -x,
+                -y,
+                -z,
+                (yaw > 0 ? (yaw - GeometryUtil.PI) : (yaw + GeometryUtil.PI)),
+                -pitch
+        );
+    }
+
+    /**
+     * If the current direction is the player face direction,
+     * this method return the direction of the back of the head.
+     * This is an alias of {@link #getOpposite()}
+     * @return the opposite of this vector.
+     */
+    public DirectionalVector getBackDirection() {
+        return getOpposite();
+    }
+
+    /**
+     * If the current direction is the player face direction,
+     * this method return the direction of the bottom of the head.
+     * @return the vector pointing on the bottom, as if this vector was the front orientation of a player head.
+     */
+    public DirectionalVector getBottomDirection() {
+        return new DirectionalVector(
+                (pitch > 0 ? yaw : (yaw > 0 ? (yaw - GeometryUtil.PI) : (yaw + GeometryUtil.PI))),
+                (pitch > 0 ? (pitch - GeometryUtil.PId2) : (-GeometryUtil.PId2 - pitch))
+        );
+    }
+
+    /**
+     * If the current direction is the player face direction,
+     * this method return the direction of the top of the head.
+     * @return the vector pointing on the top, as if this vector was the front orientation of a player head.
+     */
+    public DirectionalVector getTopDirection() {
+        return new DirectionalVector(
+                (pitch < 0 ? yaw : (yaw > 0 ? (yaw - GeometryUtil.PI) : (yaw + GeometryUtil.PI))),
+                (pitch < 0 ? (pitch + GeometryUtil.PId2) : (GeometryUtil.PId2 - pitch))
+        );
+    }
+
+
+    /**
+     * If the current direction is the player face direction,
+     * this method return the direction of the left of the head.
+     * @return the vector pointing on the left, as if this vector was the front orientation of a player head.
+     */
+    public DirectionalVector getLeftDirection() {
+        return new DirectionalVector(
+                yaw > -GeometryUtil.PId2 ? (yaw - GeometryUtil.PId2) : (yaw - GeometryUtil.PId2 + GeometryUtil.PIx2),
+                0
+        );
+    }
+
+
+    /**
+     * If the current direction is the player face direction,
+     * this method return the direction of the right of the head.
+     * @return the vector pointing on the right, as if this vector was the front orientation of a player head.
+     */
+    public DirectionalVector getRightDirection() {
+        return new DirectionalVector(
+                yaw < GeometryUtil.PId2 ? (yaw + GeometryUtil.PId2) : (yaw + GeometryUtil.PId2 - GeometryUtil.PIx2),
+                0
+        );
+    }
+
+
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/geometry/GeometryUtil.java

@@ -0,0 +1,166 @@
+package fr.pandacube.lib.paper.geometry;
+
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.util.BoundingBox;
+import org.bukkit.util.RayTraceResult;
+import org.bukkit.util.Vector;
+
+/**
+ * Utility class related to geometry and Minecraft.
+ */
+public class GeometryUtil {
+
+	/**
+	 * Value equal to <code>{@link Math#PI}</code>.
+	 */
+	static final double PI   = Math.PI;
+
+	/**
+	 * Value equal to <code>{@link Math#PI} / 2</code>.
+	 */
+	static final double PId2 = PI/2;
+
+	/**
+	 * Value equal to <code>{@link Math#PI} * 2</code>.
+	 */
+	static final double PIx2 = PI*2;
+	
+	
+	
+	
+	
+	/*
+	 * Player geometry
+	 */
+	
+	
+	/**
+	 * The visual height of a Minecraft player skin, when he is standing up and not sneaking,
+	 * from the ground where the player is standing on, to the above of the first layer of the head skin.
+	 * It doesn't correspond to the player hit box height.<br/>
+	 * <br/>
+	 * The value is provided in Minecraft Wiki.
+	 */
+	public static final double PLAYER_SKIN_HEIGHT = 1.85;
+	/**
+	 * Value provided by net.minecraft.world.entity.player.Player#getStandingEyeHeight
+	 */
+	public static final double PLAYER_EYE_HEIGHT = 1.62;
+	/**
+	 * The visual height of a Minecraft player skin, when he is standing up and sneaking,
+	 * from the ground where the player is standing on, to the above of the first layer of the head skin.
+	 * It may not correspond to the player hit box height.<br/>
+	 * <br/>
+	 * The current value is the height of the player's hit box when sneaking. Even if this
+	 * is close to the real value (tested in game), this is not the exact value.
+	 */
+	public static final double PLAYER_SKIN_HEIGHT_SNEAK = 1.50;
+	/**
+	 * Value provided by net.minecraft.world.entity.player.Player#getStandingEyeHeight
+	 */
+	public static final double PLAYER_EYE_HEIGHT_SNEAK = 1.27;
+	/**
+	 * The size of a skin pixel.
+	 */
+	public static final double PLAYER_SKIN_PIXEL_SIZE = PLAYER_SKIN_HEIGHT / 32;
+	/**
+	 * The height of the center of rotation of the head, that is the distance between neck and the player's foot.
+	 */
+	public static final double PLAYER_HEAD_ROTATION_HEIGHT = PLAYER_SKIN_PIXEL_SIZE * 24;
+	/**
+	 * The height of the center of rotation of the head, that is the distance between neck and the player's foot, but when the player is sneaking.
+	 */
+	public static final double PLAYER_HEAD_ROTATION_HEIGHT_SNEAK = PLAYER_HEAD_ROTATION_HEIGHT - (PLAYER_SKIN_HEIGHT - PLAYER_SKIN_HEIGHT_SNEAK);
+	/**
+	 * The size of the first layer of the players head.
+	 */
+	public static final double PLAYER_HEAD_SIZE = PLAYER_SKIN_PIXEL_SIZE * 8;
+	
+	
+	
+	
+	
+	
+	
+	
+
+	
+	
+	
+	
+	/**
+	 * Get the {@link Location}s of the 8 vertex of the player head<br/>
+	 * This method only work if the player is standing up
+	 * (not dead, not gliding, not sleeping, not swimming).
+	 * @param playerLocation the location of the player, generally provided by {@link Player#getLocation()}
+	 * @param isSneaking if the player is sneaking. Generally {@link Player#isSneaking()}
+	 * @return an array of 8 {@link Location}s with x, y, and z values filled (yaw and pitch are ignored).
+	 * <pre>
+	 * return[0] // top front left
+	 * return[1] // top front right
+	 * return[2] // bottom front left
+	 * return[3] // bottom front right
+	 * return[4] // top back left
+	 * return[5] // top back right
+	 * return[6] // bottom back left
+	 * return[7] // bottom back right
+	 * </pre>
+	 */
+	public static Location[] getPlayerHeadGeometry(Location playerLocation, boolean isSneaking) {
+		Location[] headAnglesPoints = new Location[8];
+		
+		Location playerHeadRotationLocation = playerLocation.clone()
+				.add(0, isSneaking ? PLAYER_HEAD_ROTATION_HEIGHT_SNEAK : PLAYER_HEAD_ROTATION_HEIGHT, 0);
+		
+		DirectionalVector frontDirection = new DirectionalVector(playerHeadRotationLocation);
+		Vector frontHalfVector = frontDirection.toVector().multiply(PLAYER_HEAD_SIZE/2);
+		Vector backHalfDirection = frontDirection.getBackDirection().toVector().multiply(PLAYER_HEAD_SIZE/2);
+		Vector leftHalfVector = frontDirection.getLeftDirection().toVector().multiply(PLAYER_HEAD_SIZE/2);
+		Vector rightHalfVector = frontDirection.getRightDirection().toVector().multiply(PLAYER_HEAD_SIZE/2);
+		Vector topVector = frontDirection.getTopDirection().toVector().multiply(PLAYER_HEAD_SIZE);
+
+		Location bottomFrontMiddle = playerHeadRotationLocation.clone().add(frontHalfVector);
+		Location bottomBackMiddle = playerHeadRotationLocation.clone().add(backHalfDirection);
+		
+		Location topFrontMiddle = bottomFrontMiddle.clone().add(topVector);
+		Location topBackMiddle = bottomBackMiddle.clone().add(topVector);
+		
+		headAnglesPoints[0] = topFrontMiddle.clone().add(leftHalfVector);
+		headAnglesPoints[1] = topFrontMiddle.clone().add(rightHalfVector);
+		headAnglesPoints[2] = bottomFrontMiddle.clone().add(leftHalfVector);
+		headAnglesPoints[3] = bottomFrontMiddle.clone().add(rightHalfVector);
+		headAnglesPoints[4] = topBackMiddle.clone().add(leftHalfVector);
+		headAnglesPoints[5] = topBackMiddle.clone().add(rightHalfVector);
+		headAnglesPoints[6] = bottomBackMiddle.clone().add(leftHalfVector);
+		headAnglesPoints[7] = bottomBackMiddle.clone().add(rightHalfVector);
+		
+		return headAnglesPoints;
+	}
+	
+	
+	
+	
+	
+	/**
+	 * Check if the path from <i>start</i> location to <i>end</i> pass through
+	 * the axis aligned bounding box defined by <i>min</i> and <i>max</i>.
+	 * @param start the start of the path.
+	 * @param end the end of the path.
+	 * @param min the min of the bounding box.
+	 * @param max the max of the bounding box.
+	 * @return true if the path intersects the bounding box.
+	 * @deprecated use {@link BoundingBox#rayTrace(Vector, Vector, double)} instead.
+	 */
+	@Deprecated
+    public static boolean hasIntersection(Vector start, Vector end, Vector min, Vector max) {
+        RayTraceResult res = BoundingBox.of(min, max).rayTrace(start, end.clone().subtract(start), end.distance(start));
+		return res != null;
+    }
+
+
+
+	private GeometryUtil() {}
+
+
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/geometry/blocks/AABBBlock.java

@@ -0,0 +1,250 @@
+package fr.pandacube.lib.paper.geometry.blocks;
+
+import fr.pandacube.lib.util.RandomUtil;
+import org.bukkit.Location;
+import org.bukkit.util.BlockVector;
+import org.bukkit.util.BoundingBox;
+import org.bukkit.util.Vector;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Iterator;
+
+/**
+ * Block Aligned Bounding Box (sort of AABB).
+ * Represent the littlest cuboid selection of blocks that contains the bounding box
+ * passed to the constructor.
+ */
+public class AABBBlock implements BlockSet, Cloneable {
+	
+	/* package */ final Vector pos1, pos2;
+	private final Vector center;
+	private final long volume;
+	private BoundingBox bukkitBoundingBox;
+
+	private AABBBlock(AABBBlock original, int shiftX, int shiftY, int shiftZ) {
+		Vector shiftVec = new Vector(shiftX, shiftY, shiftZ);
+		pos1 = original.pos1.clone().add(shiftVec);
+		pos2 = original.pos2.clone().add(shiftVec);
+		center = original.center.clone().add(shiftVec);
+		volume = original.volume;
+	}
+
+	/**
+	 * Construct a {@link AABBBlock} based on the two provided Bukkit's {@link Vector}.
+	 * @param p1 the first vector.
+	 * @param p2 the second vector.
+	 */
+	public AABBBlock(Vector p1, Vector p2) {
+		this(p1.getBlockX(), p1.getBlockY(), p1.getBlockZ(), p2.getBlockX(), p2.getBlockY(), p2.getBlockZ());
+	}
+
+	/**
+	 * Construct a {@link AABBBlock} based on the provided Bukkit's {@link BoundingBox}.
+	 * @param bb the bounding box.
+	 */
+	public AABBBlock(BoundingBox bb) {
+		pos1 = bb.getMin();
+		pos2 = bb.getMax();
+		center = bb.getCenter();
+		volume = (int) bb.getVolume();
+		bukkitBoundingBox = bb;
+	}
+
+	/**
+	 * Construct a {@link AABBBlock} based on the two provided Bukkit's {@link Location}.
+	 * The worlds defined in the provided locations are ignored.
+	 * @param l1 the first location.
+	 * @param l2 the second location.
+	 */
+	public AABBBlock(Location l1, Location l2) {
+		this(l1.getBlockX(), l1.getBlockY(), l1.getBlockZ(), l2.getBlockX(), l2.getBlockY(), l2.getBlockZ());
+	}
+
+	/**
+	 * Construct a {@link AABBBlock} based on the two provided Bukkit's {@link BlockVector}.
+	 * @param l1 the first block vector.
+	 * @param l2 the second block vector.
+	 */
+	public AABBBlock(BlockVector l1, BlockVector l2) {
+		this(l1.getBlockX(), l1.getBlockY(), l1.getBlockZ(), l2.getBlockX(), l2.getBlockY(), l2.getBlockZ());
+	}
+
+	/**
+	 * Construct a {@link AABBBlock} based on the individual coordinates of the 2 vectors.
+	 * @param p1x the x value of the first vector.
+	 * @param p1y the y value of the first vector.
+	 * @param p1z the z value of the first vector.
+	 * @param p2x the x value of the second vector.
+	 * @param p2y the y value of the second vector.
+	 * @param p2z the z value of the second vector.
+	 */
+	public AABBBlock(int p1x, int p1y, int p1z, int p2x, int p2y, int p2z) {
+		/*
+		 * Prends les points extérieurs permettant de former un bounding box englobant
+		 * celui représenté par v1 et v2, et étant aligné au quadrillage des blocs.
+		 */
+		int p1x_ = Math.min(p1x, p2x);
+		int p1y_ = Math.min(p1y, p2y);
+		int p1z_ = Math.min(p1z, p2z);
+		int p2x_ = Math.max(p1x, p2x) + 1;
+		int p2y_ = Math.max(p1y, p2y) + 1;
+		int p2z_ = Math.max(p1z, p2z) + 1;
+		pos1 = new Vector(p1x_, p1y_, p1z_);
+		pos2 = new Vector(p2x_, p2y_, p2z_);
+		
+		center = new Vector((p1x_ + p2x_) / 2d, (p1y_ + p2y_) / 2d, (p1z_ + p2z_) / 2d);
+		
+		volume = (long) Math.abs(p2x_ - p1x_) * Math.abs(p2x_ - p1x_) * Math.abs(p2x_ - p1x_);
+	}
+
+	@Override
+	public AABBBlock getEnglobingAABB() {
+		return this;
+	}
+
+	/**
+	 * Gets the value of the "minimum" {@link Vector}, that is the vector with the lowest coordinates that is inside this bounding box.
+	 * @return the minimum vector.
+	 */
+	public Vector getMin() {
+		return pos1.clone();
+	}
+
+	/**
+	 * Gets the value of the "maximum" {@link Vector}, that is the vector with the highest coordinates that is inside this bounding box.
+	 * @return the maximum vector.
+	 */
+	public Vector getMax() {
+		return pos2.clone();
+	}
+
+	/**
+	 * Gets the {@link BlockVector} with the lowest coordinates in this bounding box.
+	 * @return the minimum block vector.
+	 */
+	public BlockVector getMinBlock() {
+		return pos1.toBlockVector();
+	}
+
+	/**
+	 * Gets the {@link BlockVector} with the highest coordinates in this bounding box.
+	 * @return the maximum block vector.
+	 */
+	public BlockVector getMaxBlock() {
+		return pos2.clone().add(new Vector(-1, -1, -1)).toBlockVector();
+	}
+
+	/**
+	 * Gets a new {@link AABBBlock} with its coordinates shifted by the provided amount.
+	 * @param x the x shift.
+	 * @param y the y shift.
+	 * @param z the z shift.
+	 * @return a shifted bounding box.
+	 */
+	public AABBBlock shift(int x, int y, int z) {
+		return new AABBBlock(this, x, y, z);
+	}
+
+	@SuppressWarnings("MethodDoesntCallSuperMethod")
+	@Override
+	public AABBBlock clone() {
+		return new AABBBlock(this, 0, 0, 0);
+	}
+
+
+	public boolean overlaps(BoundingBox bb) {
+		return asBukkitBoundingBox().overlaps(bb);
+	}
+
+	public boolean isInside(Vector v) {
+		return asBukkitBoundingBox().contains(v);
+	}
+
+	/**
+	 * Gets the coordinate of the center of this bounding box.
+	 * @return the center of this bounding box.
+	 */
+	public Vector getCenter() {
+		return center.clone();
+	}
+
+	public long getVolume() {
+		return volume;
+	}
+
+	/**
+	 * Gets the Bukkit equivalent of this bounding box.
+	 * @return a {@link BoundingBox} corresponding to this {@link AABBBlock}.
+	 */
+	public BoundingBox asBukkitBoundingBox() {
+		if (bukkitBoundingBox == null) {
+			bukkitBoundingBox = new BoundingBox(pos1.getX(), pos1.getY(), pos1.getZ(),
+					pos2.getX(), pos2.getY(), pos2.getZ());
+		}
+		return bukkitBoundingBox;
+	}
+	
+	public Vector getRandomPosition() {
+		double x = RandomUtil.rand.nextDouble(pos1.getX(), pos2.getX());
+		double y = RandomUtil.rand.nextDouble(pos1.getY(), pos2.getY());
+		double z = RandomUtil.rand.nextDouble(pos1.getZ(), pos2.getZ());
+		return new Vector(x, y, z);
+	}
+	
+	@Override
+	public @NotNull Iterator<BlockVector> iterator() {
+		return new Iterator<>() {
+			private int x = pos1.getBlockX(),
+					y = pos1.getBlockY(),
+					z = pos1.getBlockZ();
+
+			@Override
+			public boolean hasNext() {
+				return x < pos2.getBlockX();
+			}
+			@Override
+			public BlockVector next() {
+				BlockVector bv = new BlockVector(x, y, z);
+
+				z++;
+				if (z >= pos2.getBlockZ()) {
+					y++;
+					z = pos1.getBlockZ();
+					if (y >= pos2.getBlockY()) {
+						x++;
+						y = pos1.getBlockY();
+					}
+				}
+
+				return bv;
+			}
+		};
+	}
+
+
+	@Override
+	public String toString() {
+		return "{(" + pos1.getBlockX() +
+				", " + pos1.getBlockY() +
+				", " + pos1.getBlockZ() +
+				"), (" + pos2.getBlockX() +
+				", " + pos2.getBlockY() +
+				", " + pos2.getBlockZ() +
+				")}";
+	}
+
+	static boolean overlap(AABBBlock aabb1, AABBBlock aabb2) {
+		return aabb1.asBukkitBoundingBox().overlaps(aabb2.asBukkitBoundingBox());
+	}
+
+	static boolean overlap(AABBBlock aabb1, BlockSet bs) {
+		if (!overlap(aabb1, bs.getEnglobingAABB()))
+			return false;
+		AABBBlock intersection = new AABBBlock(aabb1.asBukkitBoundingBox().intersection(bs.getEnglobingAABB().asBukkitBoundingBox()));
+		for (BlockVector bv : intersection)
+			if (bs.isInside(bv))
+				return true;
+		return false;
+	}
+	
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/geometry/blocks/AABBBlockGroup.java

@@ -0,0 +1,156 @@
+package fr.pandacube.lib.paper.geometry.blocks;
+
+import fr.pandacube.lib.util.IteratorIterator;
+import fr.pandacube.lib.util.RandomUtil;
+import org.bukkit.util.BlockVector;
+import org.bukkit.util.BoundingBox;
+import org.bukkit.util.Vector;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * A group of {@link AABBBlock}.
+ */
+public class AABBBlockGroup implements BlockSet {
+
+	/**
+	 * The list of {@link AABBBlock} contained in this group. This list is unmodifiable.
+	 */
+	public final List<AABBBlock> subAABB;
+
+	private final AABBBlock englobingAABB;
+
+	/**
+	 * Creates a new {@link AABBBlockGroup}.
+	 * @param in the list of {@link AABBBlock} that will be contained in this group.
+	 */
+	public AABBBlockGroup(Collection<AABBBlock> in) {
+		if (in.isEmpty())
+			throw new IllegalArgumentException("Provided collection must not be empty.");
+		subAABB = List.copyOf(in);
+		englobingAABB = initEnglobingAABB();
+	}
+
+	/**
+	 * Creates a new {@link AABBBlockGroup}.
+	 * @param in an array of {@link AABBBlock} that will be contained in this group.
+	 */
+	public AABBBlockGroup(AABBBlock... in) {
+		this(Arrays.asList(in));
+	}
+
+	private AABBBlock initEnglobingAABB() {
+		Vector pos1 = subAABB.get(0).pos1.clone();
+		Vector pos2 = subAABB.get(0).pos2.clone().add(new Vector(-1, -1, -1));
+		for (int i = 1; i < subAABB.size(); i++) {
+			AABBBlock aabb = subAABB.get(i);
+			pos1.setX(Math.min(pos1.getBlockX(), aabb.pos1.getBlockX()));
+			pos1.setY(Math.min(pos1.getBlockY(), aabb.pos1.getBlockY()));
+			pos1.setZ(Math.min(pos1.getBlockZ(), aabb.pos1.getBlockZ()));
+			pos2.setX(Math.max(pos2.getBlockX(), aabb.pos2.getBlockX() - 1));
+			pos2.setY(Math.max(pos2.getBlockY(), aabb.pos2.getBlockY() - 1));
+			pos2.setZ(Math.max(pos2.getBlockZ(), aabb.pos2.getBlockZ() - 1));
+		}
+		return new AABBBlock(pos1, pos2);
+	}
+
+	@Override
+	public AABBBlock getEnglobingAABB() {
+		return englobingAABB;
+	}
+
+	public boolean isInside(Vector v) {
+		if (!englobingAABB.isInside(v))
+			return false;
+		for (AABBBlock b : subAABB)
+			if (b.isInside(v))
+				return true;
+		return false;
+	}
+	
+	public Vector getRandomPosition() {
+		double[] freq = subAABB.stream().mapToDouble(AABBBlock::getVolume).toArray();
+		int i = RandomUtil.randomIndexOfFrequencies(freq);
+		return subAABB.get(i).getRandomPosition();
+	}
+	
+	public long getVolume() {
+		long v = 0;
+		for (AABBBlock b : subAABB)
+			v += b.getVolume();
+		return v;
+	}
+
+	@Override
+	public boolean overlaps(BoundingBox bb) {
+		if (!englobingAABB.overlaps(bb))
+			return false;
+		for (AABBBlock b : subAABB)
+			if (b.overlaps(bb))
+				return true;
+		return false;
+	}
+
+	@Override
+	public Iterator<BlockVector> iterator() {
+		return IteratorIterator.ofCollectionOfIterator(subAABB.stream().map(AABBBlock::iterator).toList());
+	}
+
+	@Override
+	public String toString() {
+		return "AABBBlockGroup{" +
+				"subAABB=" + subAABB +
+				", englobingAABB=" + englobingAABB +
+				'}';
+	}
+
+	/* package */ static boolean overlap(AABBBlockGroup aabbGroup, AABBBlock aabb) {
+		if (!aabbGroup.englobingAABB.overlaps(aabb))
+			return false;
+		for (AABBBlock b : aabbGroup.subAABB)
+			if (b.overlaps(aabb))
+				return true;
+		return false;
+	}
+
+	/* package */ static boolean overlap(AABBBlockGroup aabbGroup1, AABBBlockGroup aabbGroup2) {
+		if (!aabbGroup1.englobingAABB.overlaps(aabbGroup2.englobingAABB))
+			return false;
+		List<AABBBlock> group1SubList = new ArrayList<>();
+		for (AABBBlock b : aabbGroup1.subAABB) {
+			if (b.overlaps(aabbGroup2.englobingAABB))
+				group1SubList.add(b);
+		}
+		if (group1SubList.isEmpty())
+			return false;
+		List<AABBBlock> group2SubList = new ArrayList<>();
+		for (AABBBlock b : aabbGroup2.subAABB) {
+			if (b.overlaps(aabbGroup1.englobingAABB))
+				group2SubList.add(b);
+		}
+		if (group2SubList.isEmpty())
+			return false;
+		for (AABBBlock b1 : group1SubList)
+			for (AABBBlock b2 : group2SubList)
+				if (b1.overlaps(b2))
+					return true;
+		return false;
+	}
+
+
+
+	static boolean overlap(AABBBlockGroup aabbGroup, BlockSet bs) {
+		if (!aabbGroup.englobingAABB.overlaps(bs.getEnglobingAABB()))
+			return false;
+		for (AABBBlock b : aabbGroup.subAABB) {
+			if (b.overlaps(bs)) // already checks for englobingAABB before checking block per block
+				return true;
+		}
+		return false;
+	}
+	
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/geometry/blocks/BlockSet.java

@@ -0,0 +1,157 @@
+package fr.pandacube.lib.paper.geometry.blocks;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Entity;
+import org.bukkit.util.BlockVector;
+import org.bukkit.util.BoundingBox;
+import org.bukkit.util.Vector;
+
+import java.util.Iterator;
+
+/**
+ * Represents a set of blocks in a world.
+ */
+public interface BlockSet extends Iterable<BlockVector> {
+
+    /**
+     * Gets a random coordinate that is inside this block set.
+     * @return a random coordinate inside this block set.
+     */
+    Vector getRandomPosition();
+
+    /**
+     * Gets the volume, in blocks (or cubic meters), of this block set.
+     * @return the volume of this block set.
+     */
+    long getVolume();
+
+    /**
+     * Gets the englobing bounding box if this block set.
+     * @return the englobing bounding box if this block set.
+     */
+    AABBBlock getEnglobingAABB();
+
+
+    /**
+     * Tells if this block set overlaps the provided bounding box.
+     * @param bb the provided bounding box
+     * @return true if its overlaps, false otherwise.
+     */
+    boolean overlaps(BoundingBox bb);
+    /**
+     * Tells if this block set overlaps the bounding box of the provided entity.
+     * @param e the provided entity.
+     * @return true if its overlaps, false otherwise.
+     */
+    default boolean overlaps(Entity e) {
+        return overlaps(e.getBoundingBox());
+    }
+    /**
+     * Tells if this block set overlaps the provided one. that is there is at least one block in common.
+     * @param bs the provided block set.
+     * @return true if its overlaps, false otherwise.
+     */
+    default boolean overlaps(BlockSet bs) {
+        if (this instanceof AABBBlock b1) {
+            if (bs instanceof AABBBlock b2)
+                return AABBBlock.overlap(b1, b2);
+            if (bs instanceof AABBBlockGroup bg2)
+                return AABBBlockGroup.overlap(bg2, b1);
+            return AABBBlock.overlap(b1, bs);
+        }
+        if (this instanceof AABBBlockGroup bg1) {
+            if (bs instanceof AABBBlock b2)
+                return AABBBlockGroup.overlap(bg1, b2);
+            if (bs instanceof AABBBlockGroup bg2)
+                return AABBBlockGroup.overlap(bg1, bg2);
+            return AABBBlockGroup.overlap(bg1, bs);
+        }
+        return overlap(this, bs);
+    }
+
+
+    /**
+     * Tells if the provided vector is inside this bounding box.
+     * @param v the vector.
+     * @return true if its inside, false otherwise.
+     */
+    boolean isInside(Vector v);
+
+    /**
+     * Tells if the provided location is inside this bounding box.
+     * The world of the location is ignored.
+     * @param l the location.
+     * @return true if its inside, false otherwise.
+     */
+    default boolean isInside(Location l) {
+        return isInside(l.toVector());
+    }
+
+    /**
+     * Tells if the provided block is inside this bounding box.
+     * The world of the block is ignored.
+     * @param b the block.
+     * @return true if its inside, false otherwise.
+     */
+    default boolean isInside(Block b) {
+        return isInside(b.getLocation().add(.5, .5, .5));
+    }
+
+    /**
+     * Tells if the provided entity is inside this bounding box.
+     * It calls {@link #isInside(Location)} using the returned value of {@link Entity#getLocation()}.
+     * The world of the entity is ignored.
+     * @param e the entity.
+     * @return true if its inside, false otherwise.
+     */
+    default boolean isInside(Entity e) {
+        return isInside(e.getLocation());
+    }
+
+
+
+
+
+    /**
+     * Gets an iterator iterating through all the blocks of this block set.
+     * @param w the world of the blocks.
+     * @return a new iterator.
+     */
+    default Iterable<Block> asBlockIterable(World w) {
+        return () -> new Iterator<>() {
+            final Iterator<BlockVector> nested = BlockSet.this.iterator();
+            @Override
+            public boolean hasNext() {
+                return nested.hasNext();
+            }
+            @Override
+            public Block next() {
+                BlockVector bv = nested.next();
+                return w.getBlockAt(bv.getBlockX(), bv.getBlockY(), bv.getBlockZ());
+            }
+        };
+    }
+
+
+
+    /**
+     * Tests the two block set overlap each other.
+     * This method works on any implementation of this interface, but they should override the
+     * {@link #overlaps(BlockSet)} method to provide a more optimized code.
+     * @param bs1 the first block set.
+     * @param bs2 the second block set.
+     * @return true if the two block set overlap, false otherwise.
+     */
+    static boolean overlap(BlockSet bs1, BlockSet bs2) {
+        if (!bs1.getEnglobingAABB().overlaps(bs2.getEnglobingAABB()))
+            return false;
+        AABBBlock intersection = new AABBBlock(bs1.getEnglobingAABB().asBukkitBoundingBox().intersection(bs2.getEnglobingAABB().asBukkitBoundingBox()));
+        for (BlockVector bv : intersection)
+            if (bs1.isInside(bv) && bs2.isInside(bv))
+                return true;
+        return false;
+    }
+
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/gui/GUIHotBar.java

@@ -20,7 +20,7 @@ import org.bukkit.event.player.PlayerRespawnEvent;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 
-import fr.pandacube.lib.util.Log;
+import fr.pandacube.lib.util.log.Log;
 import fr.pandacube.lib.paper.util.BukkitEvent;
 
 /**
@@ -37,19 +37,34 @@ public class GUIHotBar implements Listener {
 	private final int defaultSlot;
 	
 	private final List<Player> currentPlayers = new ArrayList<>();
-	
+
+	/**
+	 * Setup a new gui hot  bar. You should not instantiate more than one hot bar.
+	 * @param defaultSlot the default slot (currently held item) when the player joins the hot bar.
+	 */
 	public GUIHotBar(int defaultSlot) {
 		this.defaultSlot = Math.max(0, Math.min(8, defaultSlot));
 		
 		BukkitEvent.register(this);
 	}
+
+	/**
+	 * Disables this hot bar.
+	 * @param clearPlayerMenuItems if the items of this hot bar should be removed from the players inventories.
+	 */
+	public void disable(boolean clearPlayerMenuItems) {
+		removeAllPlayers(clearPlayerMenuItems);
+
+		BukkitEvent.unregister(this);
+	}
 	
 	/**
 	 * Add the item to this hot bar menu. if there is already players hooked to this hot bar, the item will be directly added to
 	 * their inventories.
-	 * @param i the item stack
+	 * @param i the item stack.
 	 * @param setter code executed to put the item in the inventory. Additionally, check for permission before doing the addition.
 	 * @param run the Runnable to run when the user right-click on the item in the hot bar.
+	 * @return itself for daisy-chaining.
 	 */
 	public GUIHotBar addItem(ItemStack i, BiConsumer<PlayerInventory, ItemStack> setter, Consumer<Player> run) {
 		itemsAndSetters.put(i, setter);
@@ -62,9 +77,10 @@ public class GUIHotBar implements Listener {
 	}
 	
 	/**
-	 * Add the hot bar elements to this player.
-	 * 
-	 * The player is automatically removed when they quit. You can remove it before by calling {@link #removePlayer(Player)}.
+	 * Add the hot bar elements to this player, or update them if applicable.
+	 * <br>
+	 * The player is automatically removed when they quit. You can remove it before by calling {@link #removePlayer(Player, boolean)}.
+	 * @param p the player to add.
 	 */
 	public void addPlayer(Player p) {
 		if (!currentPlayers.contains(p))
@@ -79,36 +95,62 @@ public class GUIHotBar implements Listener {
 	
 	/**
 	 * Detach this player from this hot bar manager and removes the managed items from the players inventory.
+	 * @param p the player to remove.
 	 */
 	public void removePlayer(Player p) {
+		removePlayer(p, true);
+	}
+
+	/**
+	 * Detach this player from this hot bar manager and optionally removes the managed items from the players inventory.
+	 * @param p the player to remove.
+	 * @param clearMenuItems if the items from this hot bar should be removed from the player inventory.
+	 */
+	public void removePlayer(Player p, boolean clearMenuItems) {
 		if (!currentPlayers.contains(p))
 			return;
-		
-		for (ItemStack is : itemsAndSetters.keySet()) {
-			removeItemFromPlayer(p, is);
+
+		if (clearMenuItems) {
+			for (ItemStack is : itemsAndSetters.keySet()) {
+				removeItemFromPlayer(p, is);
+			}
 		}
 		
 		currentPlayers.remove(p);
 
 	}
-	
-	
+
+	/**
+	 * Tells if the provided player is attached to this hot bar.
+	 * @param p the player to check.
+	 * @return true if the player is attached, false otherwise.
+	 */
 	public boolean containsPlayer(Player p) {
 		return currentPlayers.contains(p);
 	}
-	
-	
-	
+
+
+	/**
+	 * Detach all players from this hot bar.
+	 */
 	public void removeAllPlayers() {
+		removeAllPlayers(true);
+	}
+
+	/**
+	 * Detach all players from this hot bar.
+	 * @param clearMenuItems if the items from this hot bar should be removed from the player inventory.
+	 */
+	public void removeAllPlayers(boolean clearMenuItems) {
 		for (Player p : new ArrayList<>(currentPlayers))
-			removePlayer(p);
+			removePlayer(p, clearMenuItems);
 	}
 	
 	
 	
 	
 	
-	public void addItemToPlayer(Player p, ItemStack is) {
+	private void addItemToPlayer(Player p, ItemStack is) {
 		if (!itemsAndSetters.containsKey(is))
 			throw new IllegalArgumentException("The provided ItemStack is not registered in this GUIHotBar");
 		if (!currentPlayers.contains(p))
@@ -116,7 +158,7 @@ public class GUIHotBar implements Listener {
 		itemsAndSetters.get(is).accept(p.getInventory(), is.clone());
 	}
 	
-	public void removeItemFromPlayer(Player p, ItemStack is) {
+	private void removeItemFromPlayer(Player p, ItemStack is) {
 		p.getInventory().remove(is);
 	}
 	
@@ -125,7 +167,7 @@ public class GUIHotBar implements Listener {
 	
 
 	@EventHandler
-	public void onPlayerDropItem(PlayerDropItemEvent event) {
+	void onPlayerDropItem(PlayerDropItemEvent event) {
 		if (!currentPlayers.contains(event.getPlayer()))
 			return;
 		
@@ -140,7 +182,7 @@ public class GUIHotBar implements Listener {
 	
 	
 	@EventHandler
-	public void onPlayerInteract(PlayerInteractEvent event) {
+	void onPlayerInteract(PlayerInteractEvent event) {
 		if (!currentPlayers.contains(event.getPlayer()))
 			return;
 		
@@ -169,7 +211,7 @@ public class GUIHotBar implements Listener {
 	
 	
 	@EventHandler
-	public void onInventoryClick(InventoryClickEvent event) {
+	void onInventoryClick(InventoryClickEvent event) {
 		if (event.getClickedInventory() == null || !(event.getClickedInventory() instanceof PlayerInventory inv))
 			return;
 
@@ -194,24 +236,23 @@ public class GUIHotBar implements Listener {
 
 	
 	@EventHandler
-	public void onPlayerQuit(PlayerQuitEvent event) {
+	void onPlayerQuit(PlayerQuitEvent event) {
 		removePlayer(event.getPlayer());
 	}
 	
 	
 	@EventHandler
-	public void onPlayerDeath(PlayerDeathEvent event) {
+	void onPlayerDeath(PlayerDeathEvent event) {
 		if (!currentPlayers.contains(event.getEntity()))
 			return;
 		event.getDrops().removeAll(itemsAndSetters.keySet());
 	}
 	
 	@EventHandler
-	public void onPlayerRespawn(PlayerRespawnEvent event) {
+	void onPlayerRespawn(PlayerRespawnEvent event) {
 		if (!currentPlayers.contains(event.getPlayer()))
 			return;
 
-		currentPlayers.remove(event.getPlayer());
 		addPlayer(event.getPlayer());
 	}
 	

pandalib-paper/src/main/java/fr/pandacube/lib/paper/gui/GUIInventory.java

@@ -1,17 +1,8 @@
 package fr.pandacube.lib.paper.gui;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.function.Consumer;
-
-import com.google.common.collect.ImmutableMap;
+import fr.pandacube.lib.chat.Chat;
 import fr.pandacube.lib.paper.PandaLibPaper;
-import net.kyori.adventure.text.ComponentLike;
 import org.bukkit.Bukkit;
-import org.bukkit.Material;
-import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.HandlerList;
@@ -21,20 +12,15 @@ import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 
-import fr.pandacube.lib.chat.Chat;
-import fr.pandacube.lib.paper.util.ItemStackBuilder;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Consumer;
 
 /**
  * An inventory based GUI.
  */
 public class GUIInventory implements Listener {
 
-	/**
-	 * Used as parameter of {@link #buildButton(ItemStack, Integer, ComponentLike, List, Map)} to indicate that a button should
-	 * shine like an enchanted object, without showing enchant information in the hover text.
-	 */
-	public static final Map<Enchantment, Integer> FAKE_ENCHANT = ImmutableMap.of(Enchantment.DURABILITY, 1);
-
 	private final Player player;
 	private final Inventory inv;
 	private Consumer<InventoryCloseEvent> onCloseEvent;
@@ -52,7 +38,7 @@ public class GUIInventory implements Listener {
 		if (title == null)
 			inv = Bukkit.createInventory(null, nbLines * 9);
 		else
-			inv = Bukkit.createInventory(null, nbLines * 9, title.getAdv());
+			inv = Bukkit.createInventory(null, nbLines * 9, title.get());
 
 		setCloseEvent(closeEventAction);
 
@@ -63,7 +49,11 @@ public class GUIInventory implements Listener {
 		Bukkit.getPluginManager().registerEvents(this, PandaLibPaper.getPlugin());
 
 	}
-	
+
+	/**
+	 * Sets the action when the player closes the inventory window.
+	 * @param closeEventAction the action to run.
+	 */
 	protected void setCloseEvent(Consumer<InventoryCloseEvent> closeEventAction) {
 		onCloseEvent = closeEventAction;
 	}
@@ -202,78 +192,13 @@ public class GUIInventory implements Listener {
 			onCloseEvent.accept(event);
 		isOpened = false;
 	}
-	
-	
-	
-	
-
-	
-	
-	
-	
-
-	public static ItemStack buildButton(ItemStack base, Integer amount, ComponentLike displayName,
-										List<? extends ComponentLike> lores, Map<Enchantment, Integer> enchantments) {
-		
-		ItemStackBuilder iStackBuilder = ItemStackBuilder.of(base);
-		
-		if (amount != null)
-			iStackBuilder.amount(amount);
-		if (displayName != null)
-			iStackBuilder.displayName(displayName);
-		if (lores != null)
-			iStackBuilder.lore(lores);
-		if (enchantments != null) {
-			if (enchantments == FAKE_ENCHANT)
-				iStackBuilder.fakeEnchant();
-			else {
-				for (Entry<Enchantment, Integer> e : enchantments.entrySet()) {
-					iStackBuilder.enchant(e.getKey(), e.getValue());
-				}
-			}
-		}
-		
-		return iStackBuilder.build();
-	}
-	public static ItemStack buildButton(ItemStack base, ComponentLike displayName, List<? extends ComponentLike> lores, Map<Enchantment, Integer> enchantments) {
-		return buildButton(base, null, displayName, lores, enchantments);
-	}
-	public static ItemStack buildButton(ItemStack base, ComponentLike displayName, Map<Enchantment, Integer> enchantments) {
-		return buildButton(base, null, displayName, null, enchantments);
-	}
-	public static ItemStack buildButton(ItemStack base, Integer amount, ComponentLike displayName, List<? extends ComponentLike> lores) {
-		return buildButton(base, amount, displayName, lores, null);
-	}
-	public static ItemStack buildButton(ItemStack base, ComponentLike displayName, List<? extends ComponentLike> lores) {
-		return buildButton(base, null, displayName, lores, null);
-	}
-	public static ItemStack buildButton(ItemStack base, ComponentLike displayName) {
-		return buildButton(base, null, displayName, null, null);
-	}
 
 
-	public static ItemStack buildButton(Material m, ComponentLike displayName, List<? extends ComponentLike> lores, Map<Enchantment, Integer> enchantments) {
-		return buildButton(new ItemStack(m), null, displayName, lores, enchantments);
-	}
-	public static ItemStack buildButton(Material m, ComponentLike displayName, Map<Enchantment, Integer> enchantments) {
-		return buildButton(new ItemStack(m), null, displayName, null, enchantments);
-	}
-	public static ItemStack buildButton(Material m, ComponentLike displayName, List<? extends ComponentLike> lores) {
-		return buildButton(new ItemStack(m), null, displayName, lores, null);
-	}
-	public static ItemStack buildButton(Material m, ComponentLike displayName) {
-		return buildButton(new ItemStack(m), null, displayName, null, null);
-	}
-	
-	
-	
-
-
-	
-	
-
-	
-	
+	/**
+	 * Tells the number of inventory line needed to show the provided number of slot.
+	 * @param nb the number of slot.
+	 * @return the number of line.
+	 */
 	public static int nbLineForNbElements(int nb) {
 		return nb / 9 + ((nb % 9 == 0) ? 0 : 1);
 	}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/inventory/DummyPlayerInventory.java

@@ -0,0 +1,191 @@
+package fr.pandacube.lib.paper.inventory;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.Material;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.EquipmentSlot;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.PlayerInventory;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+/**
+ * Dummy implementation of a player inventory.
+ */
+public class DummyPlayerInventory extends InventoryWrapper implements PlayerInventory {
+
+    private int heldItemSlot;
+
+    /**
+     * Creates a dummy player inventory.
+     * @param base the inventory itself.
+     * @param heldItemSlot the currently held item slot, from 0 to 8.
+     */
+    public DummyPlayerInventory(Inventory base, int heldItemSlot) {
+        super(base);
+        if (base.getSize() < 41)
+            throw new IllegalArgumentException("base inventory should have a size of 41 (" + base.getSize() + " given).");
+        if (heldItemSlot < 0 || heldItemSlot > 8)
+            throw new IllegalArgumentException("heldItemSlot should be between 0 and 8 inclusive.");
+        this.heldItemSlot = heldItemSlot;
+    }
+
+    @Override
+    public @Nullable ItemStack @NotNull [] getStorageContents() {
+        return Arrays.copyOfRange(getContents(), 0, 36);
+    }
+
+    @Override
+    public @Nullable ItemStack @NotNull [] getArmorContents() {
+        return Arrays.copyOfRange(getContents(), 36, 40);
+    }
+
+    @Override
+    public void setArmorContents(@Nullable ItemStack[] items) {
+        this.setSlots(items, 36, 4);
+    }
+
+    @Override
+    public @Nullable ItemStack @NotNull [] getExtraContents() {
+        return Arrays.copyOfRange(getContents(), 40, getSize());
+    }
+
+    @Override
+    public void setExtraContents(@Nullable ItemStack[] items) {
+        this.setSlots(items, 40, getSize() - 40);
+    }
+
+    private void setSlots(ItemStack[] items, int baseSlot, int length) {
+        if (items == null) {
+            items = new ItemStack[length];
+        }
+        Preconditions.checkArgument(items.length <= length, "items.length must be < %s", length);
+
+        for (int i = 0; i < length; i++) {
+            if (i >= items.length) {
+                this.setItem(baseSlot + i, null);
+            } else {
+                this.setItem(baseSlot + i, items[i]);
+            }
+        }
+    }
+
+    @Override
+    public ItemStack getHelmet() {
+        return getItem(39);
+    }
+
+    @Override
+    public void setHelmet(@Nullable ItemStack helmet) {
+        setItem(39, helmet);
+    }
+
+    @Override
+    public ItemStack getChestplate() {
+        return getItem(38);
+    }
+
+    @Override
+    public void setChestplate(@Nullable ItemStack chestplate) {
+        setItem(38, chestplate);
+    }
+
+    @Override
+    public ItemStack getLeggings() {
+        return getItem(37);
+    }
+
+    @Override
+    public void setLeggings(@Nullable ItemStack leggings) {
+        setItem(37, leggings);
+    }
+
+    @Override
+    public ItemStack getBoots() {
+        return getItem(36);
+    }
+
+    @Override
+    public void setBoots(@Nullable ItemStack boots) {
+        setItem(36, boots);
+    }
+
+    @Override
+    public void setItem(EquipmentSlot slot, ItemStack item) {
+        Preconditions.checkArgument(slot != null, "slot must not be null");
+
+        switch (slot) {
+            case HAND -> this.setItemInMainHand(item);
+            case OFF_HAND -> this.setItemInOffHand(item);
+            case FEET -> this.setBoots(item);
+            case LEGS -> this.setLeggings(item);
+            case CHEST -> this.setChestplate(item);
+            case HEAD -> this.setHelmet(item);
+            default -> throw new IllegalArgumentException("Not implemented. This is a bug");
+        }
+    }
+
+    @Override
+    public @NotNull ItemStack getItem(@NotNull EquipmentSlot slot) {
+        return switch (slot) {
+            case HAND -> this.getItemInMainHand();
+            case OFF_HAND -> this.getItemInOffHand();
+            case FEET -> Objects.requireNonNullElseGet(this.getBoots(), () -> new ItemStack(Material.AIR));
+            case LEGS -> Objects.requireNonNullElseGet(this.getLeggings(), () -> new ItemStack(Material.AIR));
+            case CHEST -> Objects.requireNonNullElseGet(this.getChestplate(), () -> new ItemStack(Material.AIR));
+            case HEAD -> Objects.requireNonNullElseGet(this.getHelmet(), () -> new ItemStack(Material.AIR));
+            case BODY -> new ItemStack(Material.AIR); // for horses/wolves armor
+        };
+    }
+
+    @Override
+    public @NotNull ItemStack getItemInMainHand() {
+        return Objects.requireNonNullElse(getItem(heldItemSlot), new ItemStack(Material.AIR));
+    }
+
+    @Override
+    public void setItemInMainHand(@Nullable ItemStack item) {
+        setItem(heldItemSlot, item);
+    }
+
+    @Override
+    public @NotNull ItemStack getItemInOffHand() {
+        return Objects.requireNonNullElse(getItem(40), new ItemStack(Material.AIR));
+    }
+
+    @Override
+    public void setItemInOffHand(@Nullable ItemStack item) {
+        setItem(40, item);
+    }
+
+    @Override
+    public @NotNull ItemStack getItemInHand() {
+        return getItemInMainHand();
+    }
+
+    @Override
+    public void setItemInHand(@Nullable ItemStack stack) {
+        setItemInMainHand(stack);
+    }
+
+    @Override
+    public int getHeldItemSlot() {
+        return heldItemSlot;
+    }
+
+    @Override
+    public void setHeldItemSlot(int slot) {
+        if (slot < 0 || slot > 8)
+            throw new IllegalArgumentException("Slot is not between 0 and 8 inclusive");
+        heldItemSlot = slot;
+    }
+
+    @Override
+    public @Nullable HumanEntity getHolder() {
+        return null;
+    }
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/inventory/InventoryWrapper.java

@@ -1,4 +1,4 @@
-package fr.pandacube.lib.paper.util;
+package fr.pandacube.lib.paper.inventory;
 
 import org.bukkit.Location;
 import org.bukkit.Material;
@@ -13,12 +13,22 @@ import org.jetbrains.annotations.Nullable;
 import java.util.HashMap;
 import java.util.List;
 import java.util.ListIterator;
+import java.util.Objects;
 
+/**
+ * Wrapper for an {@link Inventory}.
+ * Can be overridden to add specific behaviour to some methods.
+ */
 public class InventoryWrapper implements Inventory {
     private final Inventory base;
 
+    /**
+     * Creates a wrapper for the provided inventory.
+     * @param base the wrapped inventory. Cannot be null.
+     * @throws NullPointerException if the base inventory is null.
+     */
     public InventoryWrapper(Inventory base) {
-        this.base = base;
+        this.base = Objects.requireNonNull(base, "base inventory cannot be null.");
     }
 
 

pandalib-paper/src/main/java/fr/pandacube/lib/paper/inventory/ItemStackBuilder.java

@@ -0,0 +1,314 @@
+package fr.pandacube.lib.paper.inventory;
+
+import com.google.common.collect.Streams;
+import fr.pandacube.lib.chat.Chat;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemFlag;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.Damageable;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.function.Consumer;
+
+import static fr.pandacube.lib.chat.ChatStatic.chatComponent;
+
+/**
+ * A builder for {@link ItemStack}.
+ */
+public class ItemStackBuilder {
+
+	/**
+	 * Create a builder with a clone of the provided ItemStack.
+	 * <p>
+	 * The returned builder will not alter the provided ItemStack.
+	 * If you want to modify the ItemStack with the builder, please use {@link #wrap(ItemStack)}.
+	 * @param base the original ItemStack.
+	 * @return the builder
+	 */
+	public static ItemStackBuilder of(ItemStack base) {
+		return wrap(base.clone());
+	}
+
+	/**
+	 * Create a builder of a new ItemStack with the specified Material.
+	 * @param mat the material of the new built ItemStack
+	 * @return the builder
+	 */
+	public static ItemStackBuilder of(Material mat) {
+		return wrap(new ItemStack(mat));
+	}
+
+	/**
+	 * Create a builder that will alter the data of the provided ItemStack.
+	 * <p>
+	 * The {@link #build()} method of the returned builder will return the same instance
+	 * of ItemStack as the parameter of this method.
+	 * <p>
+	 * To create a builder that doesn't modify the provided ItemStack, use {@link #of(ItemStack)}.
+	 * @param stack the wrapped item stack.
+	 * @return the builder
+	 */
+	public static ItemStackBuilder wrap(ItemStack stack) {
+		return new ItemStackBuilder(stack);
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	private final ItemStack stack;
+	private ItemMeta cachedMeta;
+	
+	private ItemStackBuilder(ItemStack base) {
+		stack = base;
+	}
+	
+	private ItemMeta getOrInitMeta() {
+		return (cachedMeta != null) ? cachedMeta : (cachedMeta = stack.getItemMeta());
+	}
+
+	/**
+	 * Runs the provided updater on the {@link ItemMeta} instance of the built stack.
+	 * @param metaUpdater the updater that will modify the meta.
+	 * @return itself.
+	 */
+	public ItemStackBuilder meta(Consumer<ItemMeta> metaUpdater) {
+		return meta(metaUpdater, ItemMeta.class);
+	}
+
+	/**
+	 * Runs the provided updater on the {@link ItemMeta} instance of the built stack.
+	 * @param metaUpdater the updater that will modify the meta.
+	 * @param metaType the type of the meta instance.
+	 * @param <T> the type of item meta.
+	 * @return itself.
+	 */
+	public <T extends ItemMeta> ItemStackBuilder meta(Consumer<T> metaUpdater, Class<T> metaType) {
+		stack.editMeta(metaType, m -> {
+			metaUpdater.accept(m);
+			cachedMeta = m;
+		});
+		return this;
+	}
+
+	/**
+	 * Sets the amount of the built stack.
+	 * @param a the new amount.
+	 * @return itself.
+	 */
+	public ItemStackBuilder amount(int a) {
+		stack.setAmount(a);
+		return this;
+	}
+
+	/**
+	 * Sets the display name of the item, directly passing to {@link ItemMeta#displayName(Component)}.
+	 * @param displayName the new display name. Can be null to unset.
+	 * @return itself.
+	 */
+	public ItemStackBuilder rawDisplayName(Component displayName) {
+		return meta(m -> m.displayName(displayName));
+	}
+
+	/**
+	 * Sets the display name of the item, filtering to make default italic to false.
+	 * @param displayName the new display name. Can be null to unset.
+	 * @return itself.
+	 */
+	public ItemStackBuilder displayName(ComponentLike displayName) {
+		return rawDisplayName(displayName != null
+				? Chat.italicFalseIfNotSet(chatComponent(displayName)).asComponent()
+				: null);
+	}
+
+	/**
+	 * Sets the lore of the item, directly passing to {@link ItemMeta#lore(List)}.
+	 * @param lore the new lore. Can be null to unset.
+	 * @return itself.
+	 */
+	public ItemStackBuilder rawLore(List<Component> lore) {
+		return meta(m -> m.lore(lore));
+	}
+
+
+	/**
+	 * Sets the lore of the item, filtering to make default italic to false.
+	 * @param lore the new lore. Can be null to unset.
+	 * @return itself.
+	 */
+	public ItemStackBuilder lore(List<? extends ComponentLike> lore) {
+		if (lore != null) {
+			return rawLore(lore.stream()
+					.map(line -> Chat.italicFalseIfNotSet(chatComponent(line)).get())
+					.toList());
+		}
+		else
+			return rawLore(Collections.emptyList());
+	}
+
+	/**
+	 * Adds new lore lines to the existing lore of the item.
+	 * @param lores the added lore lines.
+	 * @return itself.
+	 */
+	public ItemStackBuilder addLoreAfter(List<? extends ComponentLike> lores) {
+		if (lores != null) {
+			List<Component> baseLore = getOrInitMeta().lore();
+			if (baseLore == null) baseLore = Collections.emptyList();
+			return rawLore(
+					Streams.concat(
+							baseLore.stream(),
+							lores.stream()
+							.map(line -> Chat.italicFalseIfNotSet(chatComponent(line)).get())
+					)
+					.toList());
+		}
+		else
+			return this;
+	}
+
+	/**
+	 * Adds new lore lines to the existing lore of the item.
+	 * @param lores the added lore lines.
+	 * @return itself.
+	 */
+	public ItemStackBuilder addLoreAfter(ComponentLike... lores) {
+		if (lores == null || lores.length == 0)
+			return this;
+		return addLoreAfter(Arrays.asList(lores));
+	}
+
+	/**
+	 * Enchant the item.
+	 * Supports unsafe enchants.
+	 * @param enchantment the enchantment.
+	 * @param level the enchant level.
+	 * @return itself.
+	 */
+	public ItemStackBuilder enchant(Enchantment enchantment, int level) {
+		return meta(m -> m.addEnchant(enchantment, level, true));
+	}
+
+	/**
+	 * Adds the provided flags to the item.
+	 * @param flags he flags to add.
+	 * @return itself.
+	 */
+	public ItemStackBuilder flags(ItemFlag... flags) {
+		return flags(true, flags);
+	}
+
+	/**
+	 * Adds or removes the provided flags to the item.
+	 * @param add true to add, false to remove.
+	 * @param flags he flags to add.
+	 * @return itself.
+	 */
+	public ItemStackBuilder flags(boolean add, ItemFlag... flags) {
+		return add ? meta(m -> m.addItemFlags(flags))
+				: meta(m -> m.removeItemFlags(flags));
+	}
+
+	/**
+	 * Hides the enchants from the tooltip of the item.
+	 * Will set the {@link ItemFlag#HIDE_ENCHANTS} flag of the item.
+	 * @return itself.
+	 */
+	public ItemStackBuilder hideEnchants() {
+		return hideEnchants(true);
+	}
+
+	/**
+	 * Sets or unsets the {@link ItemFlag#HIDE_ENCHANTS} flag of the item.
+	 * @param hide true to hide, false to show.
+	 * @return itself.
+	 */
+	public ItemStackBuilder hideEnchants(boolean hide) {
+		return flags(hide, ItemFlag.HIDE_ENCHANTS);
+	}
+
+	/**
+	 * Hides the attributes from the tooltip of the item.
+	 * Will set the {@link ItemFlag#HIDE_ATTRIBUTES} flag of the item.
+	 * @return itself.
+	 */
+	public ItemStackBuilder hideAttributes() {
+		return hideAttributes(true);
+	}
+
+	/**
+	 * Sets or unsets the {@link ItemFlag#HIDE_ATTRIBUTES} flag of the item.
+	 * @param hide true to hide, false to show.
+	 * @return itself.
+	 */
+	public ItemStackBuilder hideAttributes(boolean hide) {
+		return flags(hide, ItemFlag.HIDE_ATTRIBUTES);
+	}
+
+	/**
+	 * Apply the enchantment glint to the item, event if it's not enchant.
+	 * @return itself.
+	 */
+	public ItemStackBuilder fakeEnchant() {
+		return fakeEnchant(true);
+	}
+
+	/**
+	 * Sets the enchantment glint override to the item.
+	 * @param apply true to enforce the enchantment glint, false to set to default.
+	 * @return itself.
+	 */
+	public ItemStackBuilder fakeEnchant(boolean apply) {
+		return meta(m -> m.setEnchantmentGlintOverride(apply ? true : null));
+	}
+
+	/**
+	 * Sets this item as unbreakable.
+	 * @return itself.
+	 */
+	public ItemStackBuilder unbreakable() {
+		return unbreakable(true);
+	}
+
+	/**
+	 * Sets the unbreakable status of this item.
+	 * @param unbreakable the unbreakable status.
+	 * @return itself.
+	 */
+	public ItemStackBuilder unbreakable(boolean unbreakable) {
+		return meta(m -> m.setUnbreakable(unbreakable));
+	}
+
+	/**
+	 * Sets the damage value of this item.
+	 * @param d the new damage value.
+	 * @return itself.
+	 */
+	public ItemStackBuilder damage(int d) {
+		return meta(m -> m.setDamage(d), Damageable.class);
+	}
+
+
+	/**
+	 * Build the {@link ItemStack}.
+	 * @return the build item stack.
+	 */
+	public ItemStack build() {
+		return stack;
+	}
+	
+
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/json/ConfigurationSerializableAdapter.java

@@ -0,0 +1,77 @@
+package fr.pandacube.lib.paper.json;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.internal.bind.TreeTypeAdapter;
+import com.google.gson.reflect.TypeToken;
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
+import org.bukkit.configuration.serialization.ConfigurationSerialization;
+import org.bukkit.inventory.ItemStack;
+import org.yaml.snakeyaml.Yaml;
+
+import java.lang.reflect.Type;
+import java.util.Map;
+
+/**
+ * Gson adapter for ConfigurationSerializable, an interface implemented by several classes in the Bukkit API to ease
+ * serialization to YAML.
+ *
+ * To not reinvent the wheel, this class uses the Bukkit’s Yaml API to convert the objects from/to json.
+ */
+/* package */ class ConfigurationSerializableAdapter implements JsonSerializer<ConfigurationSerializable>, JsonDeserializer<ConfigurationSerializable> {
+
+    public static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newTypeHierarchyFactory(ConfigurationSerializable.class, new ConfigurationSerializableAdapter());
+
+    private static final TypeToken<Map<String, Object>> MAP_STR_OBJ_TYPE = new TypeToken<>() { };
+
+
+    private boolean isItemStack(Map<String, Object> deserializedMap) {
+        return deserializedMap.containsKey(ConfigurationSerialization.SERIALIZED_TYPE_KEY)
+                && deserializedMap.get(ConfigurationSerialization.SERIALIZED_TYPE_KEY) instanceof String serializedType
+                && ItemStack.class.equals(ConfigurationSerialization.getClassByAlias(serializedType));
+    }
+
+    @Override
+    public ConfigurationSerializable deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        if (!(json instanceof JsonObject jsonObj) || !jsonObj.has(ConfigurationSerialization.SERIALIZED_TYPE_KEY))
+            throw new JsonParseException("Unable to deserialize a ConfigurationSerializable from the provided json structure.");
+        Map<String, Object> map = context.deserialize(jsonObj, MAP_STR_OBJ_TYPE.getType());
+        if (isItemStack(map)) {
+            ItemStackAdapter.fixDeserializationVersion(map);
+        }
+        String yaml = new Yaml().dump(Map.of("obj", map));
+        YamlConfiguration cfg = new YamlConfiguration();
+        try {
+            cfg.loadFromString(yaml);
+        } catch (InvalidConfigurationException e) {
+            throw new JsonParseException("Unable t deserialize a ConfigurationSerializable from the provided json structure.", e);
+        }
+        return cfg.getSerializable("obj", ConfigurationSerializable.class);
+    }
+
+    @Override
+    public JsonElement serialize(ConfigurationSerializable src, Type typeOfSrc, JsonSerializationContext context) {
+        YamlConfiguration cfg = new YamlConfiguration();
+        cfg.set("obj", src);
+        Map<String, Object> map = new Yaml().load(cfg.saveToString());
+        return context.serialize(map.get("obj"), MAP_STR_OBJ_TYPE.getType());
+    }
+
+
+    /*public static void main(String[] args) {
+        PaperJson.init();
+        BlockVector bv = new BlockVector(12, 24, 48);
+        String json = Json.gson.toJson(bv);
+        System.out.println(json);
+        BlockVector bv2 = Json.gson.fromJson(json, BlockVector.class);
+        System.out.println(bv.equals(bv2));
+    }*/
+}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/json/ItemStackAdapter.java

@@ -1,8 +1,11 @@
 package fr.pandacube.lib.paper.json;
 
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.google.gson.JsonParseException;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
@@ -10,42 +13,76 @@ import com.google.gson.TypeAdapterFactory;
 import com.google.gson.internal.bind.TreeTypeAdapter;
 import com.google.gson.reflect.TypeToken;
 import org.bukkit.Bukkit;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
+import org.bukkit.configuration.serialization.ConfigurationSerialization;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
 
 import java.lang.reflect.Type;
 import java.util.Map;
 
 /* package */ class ItemStackAdapter implements JsonSerializer<ItemStack>, JsonDeserializer<ItemStack> {
 
-    private static final TypeToken<ItemStack> ITEMSTACK_TYPE = TypeToken.get(ItemStack.class);
-    public static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newFactoryWithMatchRawType(ITEMSTACK_TYPE, new ItemStackAdapter());
+    public static final TypeAdapterFactory FACTORY = TreeTypeAdapter.newTypeHierarchyFactory(ItemStack.class, new ItemStackAdapter());
 
     private static final TypeToken<Map<String, Object>> MAP_STR_OBJ_TYPE = new TypeToken<>() { };
 
+    /** Gson instance with no custom type adapter */
+    private static final Gson vanillaGson = new GsonBuilder().setLenient().create();
 
     @Override
     public ItemStack deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
-        Map<String, Object> deserializedMap = context.deserialize(json, MAP_STR_OBJ_TYPE.getType());
-        int itemStackVersion = deserializedMap.containsKey("v") ? ((Number)deserializedMap.get("v")).intValue() : -1;
-        if (itemStackVersion >= 0) {
-            @SuppressWarnings("deprecation")
-            int currentDataVersion = Bukkit.getUnsafe().getDataVersion();
-            if (itemStackVersion > currentDataVersion) {
-                /* The itemStack we are deserializing is from a newer MC version, so Bukkit will refuse it.
-                 * We decide to ignore the provided version and consider that the received item stack is from current
-                 * version. We let Bukkit handles the deserialization with the data it can interpret, throwing an error
-                 * only if it can't.
-                 */
-                deserializedMap.put("v", currentDataVersion);
-                return ItemStack.deserialize(deserializedMap);
-            }
+        if (!(json instanceof JsonObject jsonObj))
+            throw new JsonParseException("Unable to deserialize a ConfigurationSerializable from the provided json structure.");
+        if (jsonObj.has(ConfigurationSerialization.SERIALIZED_TYPE_KEY))
+            return context.deserialize(jsonObj, ConfigurationSerializable.class);
+
+
+        if (jsonObj.has("meta")
+                && jsonObj.get("meta") instanceof JsonObject metaJson
+                && !metaJson.has(ConfigurationSerialization.SERIALIZED_TYPE_KEY)) {
+            // item meta was serialized using GSON reflection serializer, instead of proper serialization using
+            // ConfigurationSerializable interface. So we try to deserialize it the same way.
+
+            Map<String, Object> map = context.deserialize(jsonObj, MAP_STR_OBJ_TYPE.getType());
+            fixDeserializationVersion(map);
+            map.remove("meta");
+            ItemStack is = ItemStack.deserialize(map);
+
+            Class<? extends ItemMeta> metaClass = is.getItemMeta().getClass();
+            ItemMeta meta = vanillaGson.fromJson(jsonObj.get("meta"), metaClass);
+            is.setItemMeta(meta);
+            return is;
         }
 
-        return ItemStack.deserialize(deserializedMap);
+        // deserialize using ConfigurationSerializableAdapter
+        jsonObj.addProperty(ConfigurationSerialization.SERIALIZED_TYPE_KEY,
+                ConfigurationSerialization.getAlias(ItemStack.class));
+        return context.deserialize(jsonObj, ConfigurationSerializable.class);
     }
 
     @Override
     public JsonElement serialize(ItemStack src, Type typeOfSrc, JsonSerializationContext context) {
         return context.serialize(src.serialize(), MAP_STR_OBJ_TYPE.getType());
     }
+
+
+
+    /* package */ static void fixDeserializationVersion(Map<String, Object> deserializedMap) {
+        if (!deserializedMap.containsKey("v"))
+            return;
+        int itemStackVersion = ((Number)deserializedMap.get("v")).intValue();
+        if (itemStackVersion >= 0) {
+            @SuppressWarnings("deprecation")
+            int currentDataVersion = Bukkit.getUnsafe().getDataVersion();
+            if (itemStackVersion > currentDataVersion) {
+                /* Here, the itemStack we are deserializing is from a newer MC version, so Bukkit will refuse it.
+                 * We decide to ignore the provided version and consider that the received item stack is from current
+                 * version. We let Bukkit handles the deserialization with the data it can interpret, throwing an error
+                 * only if it can't.
+                 */
+                deserializedMap.put("v", currentDataVersion);
+            }
+        }
+    }
 }

pandalib-paper/src/main/java/fr/pandacube/lib/paper/json/PaperJson.java

@@ -12,5 +12,9 @@ public class PaperJson {
      */
     public static void init() {
         Json.registerTypeAdapterFactory(ItemStackAdapter.FACTORY);
+        Json.registerTypeAdapterFactory(ConfigurationSerializableAdapter.FACTORY);
     }
+
+
+    private PaperJson() {}
 }

pandalib-paper/src/main/java/fr/pandacube/lib/paper/modules/PerformanceAnalysisManager.java

@@ -4,7 +4,6 @@ import com.destroystokyo.paper.event.server.ServerTickEndEvent;
 import com.destroystokyo.paper.event.server.ServerTickStartEvent;
 import fr.pandacube.lib.chat.Chat;
 import fr.pandacube.lib.chat.ChatColorGradient;
-import fr.pandacube.lib.chat.ChatColorUtil;
 import fr.pandacube.lib.chat.ChatConfig.PandaTheme;
 import fr.pandacube.lib.paper.PandaLibPaper;
 import fr.pandacube.lib.paper.players.PaperOffPlayer;
@@ -13,16 +12,15 @@ import fr.pandacube.lib.paper.scheduler.SchedulerUtil;
 import fr.pandacube.lib.paper.util.AutoUpdatedBossBar;
 import fr.pandacube.lib.paper.util.AutoUpdatedBossBar.BarUpdater;
 import fr.pandacube.lib.players.standalone.AbstractPlayerManager;
-import fr.pandacube.lib.util.Log;
 import fr.pandacube.lib.util.MemoryUtil;
 import fr.pandacube.lib.util.MemoryUtil.MemoryUnit;
 import fr.pandacube.lib.util.TimeUtil;
+import fr.pandacube.lib.util.log.Log;
 import net.kyori.adventure.bossbar.BossBar;
 import net.kyori.adventure.bossbar.BossBar.Color;
 import net.kyori.adventure.bossbar.BossBar.Overlay;
 import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.text.format.TextColor;
-import net.md_5.bungee.api.ChatColor;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
@@ -45,10 +43,17 @@ import static fr.pandacube.lib.chat.ChatStatic.infoText;
 import static fr.pandacube.lib.chat.ChatStatic.successText;
 import static fr.pandacube.lib.chat.ChatStatic.text;
 
+/**
+ * Various tools to supervise the JVM RAM and the CPU usage of the main server thread.
+ */
 public class PerformanceAnalysisManager implements Listener {
 
 	private static PerformanceAnalysisManager instance;
 
+	/**
+	 * Gets the instance of {@link PerformanceAnalysisManager}.
+	 * @return the instance of {@link PerformanceAnalysisManager}.
+	 */
 	public static synchronized PerformanceAnalysisManager getInstance() {
 		if (instance == null)
 			instance = new PerformanceAnalysisManager();
@@ -77,40 +82,33 @@ public class PerformanceAnalysisManager implements Listener {
 	private final LinkedList<Long> interTPSDurations = new LinkedList<>();
 
 
-
-
+	/**
+	 * The boss bar that shows in real time the CPU performance of the main server thread.
+	 */
 	public final AutoUpdatedBossBar tpsBar;
+
+	/**
+	 * The boss bar that shows in real time the JVM RAM usage.
+	 */
 	public final AutoUpdatedBossBar memoryBar;
 	private final List<Player> barPlayers = new ArrayList<>();
 	private final List<BossBar> relatedBossBars = new ArrayList<>();
-	
-	
+
+
+	/**
+	 * The gradient of color covering the common range of TPS values.
+	 */
 	public final ChatColorGradient tps1sGradient = new ChatColorGradient()
 			.add(0, NamedTextColor.BLACK)
 			.add(1, NamedTextColor.DARK_RED)
 			.add(5, NamedTextColor.RED)
 			.add(10, NamedTextColor.GOLD)
 			.add(14, NamedTextColor.YELLOW)
-			.add(20, PandaTheme.CHAT_GREEN_1_NORMAL)
+			.add(19, PandaTheme.CHAT_GREEN_1_NORMAL)
+			.add(21, PandaTheme.CHAT_GREEN_1_NORMAL)
 			.add(26, NamedTextColor.BLUE);
 
-
-	public final ChatColorGradient tps10sGradient = new ChatColorGradient()
-			.add(0, NamedTextColor.DARK_RED)
-			.add(5, NamedTextColor.RED)
-			.add(10, NamedTextColor.GOLD)
-			.add(14, NamedTextColor.YELLOW)
-			.add(18, PandaTheme.CHAT_GREEN_1_NORMAL);
-
-
-	public final ChatColorGradient tps1mGradient = new ChatColorGradient()
-			.add(0, NamedTextColor.DARK_RED)
-			.add(8, NamedTextColor.RED)
-			.add(12, NamedTextColor.GOLD)
-			.add(16, NamedTextColor.YELLOW)
-			.add(20, PandaTheme.CHAT_GREEN_1_NORMAL);
-
-	public final ChatColorGradient memoryUsageGradient = new ChatColorGradient()
+	private final ChatColorGradient memoryUsageGradient = new ChatColorGradient()
 			.add(.60f, PandaTheme.CHAT_GREEN_1_NORMAL)
 			.add(.70f, NamedTextColor.YELLOW)
 			.add(.80f, NamedTextColor.GOLD)
@@ -132,10 +130,19 @@ public class PerformanceAnalysisManager implements Listener {
 		
 	}
 
+	/**
+	 * Tells if the provided players is seeing the performance boss bars.
+	 * @param p the player to verify.
+	 * @return true if the provided players is seeing the performance boss bars, false otherwise.
+	 */
 	public boolean barsContainsPlayer(Player p) {
 		return barPlayers.contains(p);
 	}
-	
+
+	/**
+	 * Shows the performance boss bars to the provided player.
+	 * @param p the player.
+	 */
 	public synchronized void addPlayerToBars(Player p) {
 		barPlayers.add(p);
 		p.showBossBar(tpsBar.bar);
@@ -143,7 +150,11 @@ public class PerformanceAnalysisManager implements Listener {
 		for (BossBar bar : relatedBossBars)
 			p.showBossBar(bar);
 	}
-	
+
+	/**
+	 * Hides the performance boss bars from the provided player.
+	 * @param p the player.
+	 */
 	public synchronized void removePlayerToBars(Player p) {
 		p.hideBossBar(tpsBar.bar);
 		p.hideBossBar(memoryBar.bar);
@@ -151,7 +162,11 @@ public class PerformanceAnalysisManager implements Listener {
 			p.hideBossBar(bar);
 		barPlayers.remove(p);
 	}
-	
+
+	/**
+	 * Show an additional boss bar to the players currently seeing the performance ones.
+	 * @param bar the new bar to show.
+	 */
 	public synchronized void addBossBar(BossBar bar) {
 		if (relatedBossBars.contains(bar))
 			return;
@@ -159,7 +174,11 @@ public class PerformanceAnalysisManager implements Listener {
 		for (Player p : barPlayers)
 			p.showBossBar(bar);
 	}
-	
+
+	/**
+	 * Hides an additional boss bar from the players currently seeing the performance ones.
+	 * @param bar the additional bar to hide.
+	 */
 	public synchronized void removeBossBar(BossBar bar) {
 		if (!relatedBossBars.contains(bar))
 			return;
@@ -167,8 +186,11 @@ public class PerformanceAnalysisManager implements Listener {
 		for (Player p : barPlayers)
 			p.hideBossBar(bar);
 	}
-	
-	public synchronized void cancelInternalBossBar() {
+
+	/**
+	 * De-initialize the performance analyzer.
+	 */
+	public synchronized void deinit() {
 		tpsBar.cancel();
 		memoryBar.cancel();
 	}
@@ -178,7 +200,7 @@ public class PerformanceAnalysisManager implements Listener {
 	
 	
 	@EventHandler
-	public synchronized void onTickStart(ServerTickStartEvent event) {
+	synchronized void onTickStart(ServerTickStartEvent event) {
 		tickStartNanoTime = System.nanoTime();
 		tickStartCPUTime = threadMXBean.isThreadCpuTimeSupported() ? threadMXBean.getCurrentThreadCpuTime() : 0;
 		
@@ -186,7 +208,7 @@ public class PerformanceAnalysisManager implements Listener {
 	}
 	
 	@EventHandler
-	public synchronized void onTickEnd(ServerTickEndEvent event) {
+	synchronized void onTickEnd(ServerTickEndEvent event) {
 		tickEndNanoTime = System.nanoTime();
 		long tickEndCPUTime = threadMXBean.isThreadCpuTimeSupported() ? threadMXBean.getCurrentThreadCpuTime() : 0;
 		
@@ -213,7 +235,7 @@ public class PerformanceAnalysisManager implements Listener {
 
 	
 	@EventHandler
-	public void onPlayerJoin(PlayerJoinEvent event) {
+	void onPlayerJoin(PlayerJoinEvent event) {
 		plugin.getServer().getScheduler().runTaskAsynchronously(plugin, () -> {
 			@SuppressWarnings("unchecked")
 			AbstractPlayerManager<PaperOnlinePlayer, PaperOffPlayer> playerManager = (AbstractPlayerManager<PaperOnlinePlayer, PaperOffPlayer>) AbstractPlayerManager.getInstance();
@@ -233,7 +255,7 @@ public class PerformanceAnalysisManager implements Listener {
 
 
 	@EventHandler
-	public void onPlayerQuit(PlayerQuitEvent event) {
+	void onPlayerQuit(PlayerQuitEvent event) {
 		removePlayerToBars(event.getPlayer());
 	}
 
@@ -298,15 +320,17 @@ public class PerformanceAnalysisManager implements Listener {
 					
 					// keep the legacy text when generating the bar to save space when converting to component
 					StringBuilder s = new StringBuilder();
-					ChatColor prevC = ChatColor.RESET;
+					TextColor prevC = null;
 					for (int i = 58; i >= 0; i--) {
 						int t = tpsHistory[i];
-						ChatColor newC = ChatColorUtil.toBungee(tps1sGradient.pickColorAt(t));
-						if (newC != prevC) {
-							s.append(newC);
+						TextColor newC = tps1sGradient.pickColorAt(t);
+						if (!newC.equals(prevC)) {
+							s.append(text("|").color(newC).getLegacyText());
 							prevC = newC;
 						}
-						s.append("|");
+						else {
+							s.append("|");
+						}
 					}
 					
 					
@@ -346,19 +370,19 @@ public class PerformanceAnalysisManager implements Listener {
 								: (avgTickDuration1s < 46) ? NamedTextColor.GOLD
 								: NamedTextColor.RED;
 						
-						timings = text("(Tr:")
-								.then(text(Math.round(avgTickCPUTime1s) + "ms").color(avgTickCPUTime1sColor))
-								.thenText(" Tw:")
-								.then(text(Math.round(avgTickWaitingTime1s) + "ms").color(avgTickWaitingTime1sColor))
-								.thenText(" S:")
-								.then(text(Math.round(avgInterTickDuration1s) + "ms").color(avgInterTickDuration1sColor))
-								.thenText(")");
+						timings = text("(R/W/S:")
+								.then(text(Math.round(avgTickCPUTime1s)).color(avgTickCPUTime1sColor))
+								.thenText("/")
+								.then(text(Math.round(avgTickWaitingTime1s)).color(avgTickWaitingTime1sColor))
+								.thenText("/")
+								.then(text(Math.round(avgInterTickDuration1s)).color(avgInterTickDuration1sColor))
+								.thenText("ms)");
 					}
 					
 					title = infoText("TPS [")
 							.thenLegacyText(s.toString())
 							.thenText("] ")
-							.then(text(tps1sDisplay+"/20 ").color(tps1sGradient.pickColorAt(tps1s)))
+							.then(text(tps1sDisplay + "/" + getTargetTickRate() + " ").color(tps1sGradient.pickColorAt(tps1s)))
 							.then(timings);
 				}
 				
@@ -373,29 +397,36 @@ public class PerformanceAnalysisManager implements Listener {
 	}
 	
 	private Chat alteredTPSTitle = null;
-	
+
+	/**
+	 * Temporary change the title of the TPS boss bar.
+	 * @param title the title override. null to restore to the normal TPS title.
+	 */
 	public synchronized void setAlteredTPSTitle(Chat title) {
 		alteredTPSTitle = title;
 	}
-	
-	
-	
-	
-	
-	
-	
-	// special case where the getTPS method always returns a whole number when retrieving the TPS for 1 sec
+
+
+
+
+
+
+
+	/**
+	 * Gets the number of tick in the last second.
+	 * @return the number of tick in the last second.
+	 */
 	public int getTPS1s() {
 		return (int) getTPS(1_000);
 	}
 
 	/**
-	 * 
 	 * @param nbTicks number of ticks when the avg value is computed from history
 	 * @return the avg number of TPS in the interval
 	 */
-	public synchronized float getAvgNano(List<Long> data, int nbTicks) {
-		if (data.size() <= 0) return 0;
+	private synchronized float getAvgNano(List<Long> data, int nbTicks) {
+		if (data.isEmpty())
+			return 0;
 
 		if (nbTicks > data.size()) nbTicks = data.size();
 
@@ -407,12 +438,13 @@ public class PerformanceAnalysisManager implements Listener {
 	}
 
 	/**
-	 * 
+	 * Gets the average number of tick per second in the n last milliseconds.
 	 * @param nbMillis number of milliseconds when the avg TPS is computed from history
 	 * @return the avg number of TPS in the interval
 	 */
 	public synchronized float getTPS(long nbMillis) {
-		if (tpsTimes.size() == 0) return 0;
+		if (tpsTimes.isEmpty())
+			return 0;
 
 		long currentMillis = System.currentTimeMillis();
 
@@ -425,8 +457,12 @@ public class PerformanceAnalysisManager implements Listener {
 
 		return count * (1000 / (float) nbMillis);
 	}
-	
-	
+
+
+	/**
+	 * Gets the history of TPS performance.
+	 * @return an array of TPS values from the last minute. The value at 0 is in the last second (current second on the clock - 1), the value at index 1 is now - 2, ...
+	 */
 	public synchronized int[] getTPSHistory() {
 		int[] history = new int[60];
 
@@ -442,11 +478,24 @@ public class PerformanceAnalysisManager implements Listener {
 		return history;
 		
 	}
-	
-	
-	
-	
-	
+
+
+	/**
+	 * Gets the current server's target tick rate.
+	 * Usually 20 but the server can be configured to tick at a different rate.
+	 * @return the current server's target tick rate.
+	 */
+	public static int getTargetTickRate() {
+		return Math.round(Bukkit.getServerTickManager().getTickRate());
+	}
+
+
+	/**
+	 * Runs the garbage collector on the server.
+	 * Depending on the server load and the used memory, this can freeze the server for a second.
+	 * @param sender the command sender that triggers the garbase collector. Can be null (the report will be sent to the
+	 *               console)
+	 */
 	public static void gc(CommandSender sender) {
 		long t1 = System.currentTimeMillis();
 		long alloc1 = Runtime.getRuntime().totalMemory();
@@ -468,7 +517,7 @@ public class PerformanceAnalysisManager implements Listener {
 			Log.info(finalMessage.getLegacyText());
 	}
 
-	public static String displayRound10(double val) {
+	private static String displayRound10(double val) {
 		long v = (long) Math.ceil(val * 10);
 		return "" + (v / 10f);
 	}

pandalib-paper/src/main/java/fr/pandacube/lib/paper/players/PaperOffPlayer.java

@@ -1,14 +1,11 @@
 package fr.pandacube.lib.paper.players;
 
-import fr.pandacube.lib.paper.reflect.util.PrimaryWorlds;
+import fr.pandacube.lib.paper.world.PrimaryWorlds;
 import fr.pandacube.lib.paper.reflect.wrapper.craftbukkit.CraftServer;
-import fr.pandacube.lib.paper.reflect.wrapper.dataconverter.MCDataConverter;
-import fr.pandacube.lib.paper.reflect.wrapper.dataconverter.MCTypeRegistry;
-import fr.pandacube.lib.paper.reflect.wrapper.minecraft.SharedConstants;
 import fr.pandacube.lib.paper.reflect.wrapper.minecraft.nbt.CompoundTag;
 import fr.pandacube.lib.paper.reflect.wrapper.minecraft.nbt.NbtIo;
-import fr.pandacube.lib.paper.util.PlayerDataWrapper;
-import fr.pandacube.lib.paper.util.WorldUtil;
+import fr.pandacube.lib.paper.players.PlayerDataWrapper.PlayerDataLoadException;
+import fr.pandacube.lib.paper.world.WorldUtil;
 import fr.pandacube.lib.players.standalone.AbstractOffPlayer;
 import fr.pandacube.lib.reflect.wrapper.ReflectWrapper;
 import org.bukkit.Bukkit;
@@ -118,26 +115,31 @@ public interface PaperOffPlayer extends AbstractOffPlayer {
      * Player config
      */
 
+    @SuppressWarnings("RedundantThrows") // may be thrown by concrete implementation
     @Override
     default String getConfig(String key) throws Exception {
         return PaperPlayerConfigStorage.get(getUniqueId(), key);
     }
 
+    @SuppressWarnings("RedundantThrows") // may be thrown by concrete implementation
     @Override
     default String getConfig(String key, String deflt) throws Exception {
         return PaperPlayerConfigStorage.get(getUniqueId(), key, deflt);
     }
 
+    @SuppressWarnings("RedundantThrows") // may be thrown by concrete implementation
     @Override
     default void setConfig(String key, String value) throws Exception {
         PaperPlayerConfigStorage.set(getUniqueId(), key, value);
     }
 
+    @SuppressWarnings("RedundantThrows") // may be thrown by concrete implementation
     @Override
     default void updateConfig(String key, String deflt, UnaryOperator<String> updater) throws Exception {
         PaperPlayerConfigStorage.update(getUniqueId(), key, deflt, updater);
     }
 
+    @SuppressWarnings("RedundantThrows") // may be thrown by concrete implementation
     @Override
     default void unsetConfig(String key) throws Exception {
         PaperPlayerConfigStorage.unset(getUniqueId(), key);
@@ -153,23 +155,21 @@ public interface PaperOffPlayer extends AbstractOffPlayer {
     /**
      * Gets the NBT data from the player-data file.
      * It will not work if the player is online, because the data on the file are not synchronized with real-time values.
-     * @param convertTag true to convert the data to the current MC version, false to keep the saved version
-     * @return the NBT data from the player-data file.
+     * @return the NBT data from the player-data file, or null if the file does not exist.
      * @throws IllegalStateException if the player is online.
      */
-    default CompoundTag getPlayerData(boolean convertTag) {
+    default CompoundTag getPlayerData() {
         if (isOnline())
-            throw new IllegalStateException("Cannot access data file of " + getName() + " because they’re online.");
-        CompoundTag data = ReflectWrapper.wrapTyped(Bukkit.getServer(), CraftServer.class)
-                .getServer()
-                .getPlayerList()
-                .playerIo()
-                .getPlayerData(getUniqueId().toString());
-        if (convertTag) {
-            int i = data.contains("DataVersion", 3) ? data.getInt("DataVersion") : -1;
-            data = MCDataConverter.convertTag(MCTypeRegistry.PLAYER(), data, i, SharedConstants.getCurrentVersion().getDataVersion().getVersion());
+            throw new IllegalStateException("Cannot access data file of " + getName() + " because they're online.");
+        try {
+            return ReflectWrapper.wrapTyped(Bukkit.getServer(), CraftServer.class)
+                    .getServer()
+                    .getPlayerList()
+                    .playerIo()
+                    .load(getName(), getUniqueId().toString()).orElse(null);
+        } catch (Exception|LinkageError e) {
+            throw new PlayerDataLoadException(getName(), getUniqueId(), e);
         }
-        return data;
     }
 
     /**
@@ -179,7 +179,7 @@ public interface PaperOffPlayer extends AbstractOffPlayer {
      * @throws IllegalStateException if the player is online.
      */
     default PlayerDataWrapper getPlayerDataWrapper() {
-        return new PlayerDataWrapper(getPlayerData(true));
+        return new PlayerDataWrapper(getPlayerData());
     }
 
     /**
@@ -196,7 +196,7 @@ public interface PaperOffPlayer extends AbstractOffPlayer {
         File old = getPlayerDataFile(true);
         old.delete();
         Files.move(file.toPath(), old.toPath());
-        NbtIo.writeCompressed(data.data, file);
+        NbtIo.writeCompressed(data.data(), file.toPath());
     }
 
     /**
@@ -205,7 +205,7 @@ public interface PaperOffPlayer extends AbstractOffPlayer {
      * @return the file where the player-data is stored.
      */
     default File getPlayerDataFile(boolean old) {
-        File playerDataDir = new File(WorldUtil.worldDir(PrimaryWorlds.PRIMARY_WORLDS.get(0)), "playerdata");
+        File playerDataDir = new File(WorldUtil.worldDir(PrimaryWorlds.PRIMARY_WORLDS.getFirst()), "playerdata");
         return new File(playerDataDir, getUniqueId() + (old ? ".dat_old" : ".dat"));
     }
 

pandalib-paper/src/main/java/fr/pandacube/lib/paper/players/PaperOnlinePlayer.java

@@ -3,10 +3,11 @@ package fr.pandacube.lib.paper.players;
 import com.destroystokyo.paper.ClientOption;
 import com.destroystokyo.paper.ClientOption.ChatVisibility;
 import com.destroystokyo.paper.SkinParts;
-import fr.pandacube.lib.paper.players.PlayerNonPersistentConfig.Expiration;
+import fr.pandacube.lib.paper.players.PlayerNonPersistentConfig.ExpirationPolicy;
 import fr.pandacube.lib.paper.reflect.wrapper.craftbukkit.CraftPlayer;
 import fr.pandacube.lib.players.standalone.AbstractOnlinePlayer;
 import fr.pandacube.lib.reflect.wrapper.ReflectWrapper;
+import io.papermc.paper.entity.TeleportFlag.Relative;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.title.Title;
 import net.kyori.adventure.title.Title.Times;
@@ -14,7 +15,7 @@ import net.kyori.adventure.util.Ticks;
 import org.bukkit.Location;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Sound;
-import org.bukkit.entity.LivingEntity;
+import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.MainHand;
 import org.bukkit.inventory.PlayerInventory;
@@ -26,6 +27,17 @@ import java.util.Locale;
  */
 public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer {
 
+    /**
+     * The default value for {@link Player#getWalkSpeed()}.
+     */
+    float BUKKIT_DEFAULT_WALK_SPEED = 0.2f;
+
+    /**
+     * The default value for {@link Player#getFlySpeed()}.
+     */
+    float BUKKIT_DEFAULT_FLY_SPEED = 0.1f;
+
+
     /*
      * General data and state
      */
@@ -123,12 +135,14 @@ public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer
      */
 
     @Override
-    PaperClientOptions getClientOptions();
+    default PaperClientOptions getClientOptions() {
+        return new PaperClientOptions(this);
+    }
 
     /**
      * Provides various configuration values of the Minecraft client.
      */
-    abstract class PaperClientOptions implements AbstractOnlinePlayer.ClientOptions {
+    class PaperClientOptions implements AbstractOnlinePlayer.ClientOptions {
 
         private final PaperOnlinePlayer op;
 
@@ -156,7 +170,7 @@ public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer
         @Override
         public boolean isChatFullyVisible() {
             ChatVisibility v = getChatVisibility();
-            return v == ChatVisibility.FULL || v == ChatVisibility.UNKNOWN;
+            return v == ChatVisibility.FULL;
         }
 
         @Override
@@ -198,8 +212,8 @@ public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer
         }
 
         @Override
-        public boolean isTextFilteringEnabled() { // needs reflection to get the actual value
-            return false;
+        public boolean isTextFilteringEnabled() {
+            return op.getBukkitPlayer().getClientOption(ClientOption.TEXT_FILTERING_ENABLED);
         }
 
         @Override
@@ -254,25 +268,30 @@ public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer
 
 
 
+
+
+
+
     /*
-     * Custom damage
+     * Relative teleport
      */
 
     /**
-     * Deals damages to this player.
-     * @param amount the amount of damage to deal.
+     * Teleports this player to the specified relative location, using the {@link Relative} flags.
+     * @param relX the relative x coordinate.
+     * @param relY the relative y coordinate.
+     * @param relZ the relative z coordinate.
      */
-    default void damage(double amount) {
-        getBukkitPlayer().damage(amount); // uses DamageSource.GENERIC
+    default void teleportRelatively(float relX, float relY, float relZ) {
+        getBukkitPlayer().teleport(getBukkitPlayer().getLocation().add(relX, relY, relZ), Relative.VELOCITY_X, Relative.VELOCITY_Y, Relative.VELOCITY_Z, Relative.VELOCITY_ROTATION);
     }
 
     /**
-     * Deals damages to this player, from the provided entity.
-     * @param amount the amount of damage to deal.
-     * @param source the entity from which the damage comes from.
+     * Teleports this player to the specified location, using the {@link Relative} flags.
+     * @param destination the destination.
      */
-    default void damage(double amount, LivingEntity source) {
-        getBukkitPlayer().damage(amount, source); // uses appropriate DamageSource according to provided player or entity
+    default void teleportRelatively(Location destination) {
+        getBukkitPlayer().teleport(destination, Relative.VELOCITY_X, Relative.VELOCITY_Y, Relative.VELOCITY_Z, Relative.VELOCITY_ROTATION);
     }
 
 
@@ -285,18 +304,39 @@ public interface PaperOnlinePlayer extends PaperOffPlayer, AbstractOnlinePlayer
      * Player config
      */
 
+    /**
+     * Gets the non-persistent value of the provided configuration key of this player.
+     * @param key the configuration key.
+     * @return the value of the configuration, or null if the configuration is not set.
+     */
     default String getNonPersistentConfig(String key) {
         return PlayerNonPersistentConfig.getData(getUniqueId(), key);
     }
 
+    /**
+     * Gets the non-persistent value of the provided configuration key of this player.
+     * @param key the configuration key.
+     * @param deflt the default value if the configuration is not set.
+     * @return the value of the configuration, or {@code deflt} if the configuration is not set.
+     */
     default String getNonPersistentConfig(String key, String deflt) {
         return PlayerNonPersistentConfig.getData(getUniqueId(), key);
     }
 
-    default void setNonPersistentConfig(String key, String value, Expiration expiration) {
-        PlayerNonPersistentConfig.setData(getUniqueId(), key, value, expiration);
+    /**
+     * Sets the non-persistent value of the provided configuration key for this player.
+     * @param key the configuration key to set.
+     * @param value the new value.
+     * @param expirationPolicy the expiration policy.
+     */
+    default void setNonPersistentConfig(String key, String value, ExpirationPolicy expirationPolicy) {
+        PlayerNonPersistentConfig.setData(getUniqueId(), key, value, expirationPolicy);
     }
 
+    /**
+     * Unsets the non-persistent value of the provided configuration key for this player.
+     * @param key the configuration key to update.
+     */
     default void unsetNonPersistentConfig(String key) {
         PlayerNonPersistentConfig.unsetData(getUniqueId(), key);
     }