#!/usr/bin/env bash

PS1="$"
basedir="$(cd "$1" && pwd -P)"
workdir="$basedir/work"
gpgsign="$(git config commit.gpgsign || echo "false")"
echo "Rebuilding Forked projects.... "

function enableCommitSigningIfNeeded {
    if [[ "$gpgsign" == "true" ]]; then
        echo "Re-enabling GPG Signing"
        # Yes, this has to be global
        git config --global commit.gpgsign true
    fi
}

function applyPatch {
    what=$1
    what_name=$(basename "$what")
    target=$2
    branch=$3

    cd "$basedir/$what"
    git fetch
    git branch -f upstream "$branch" >/dev/null

    cd "$basedir"
    if [ ! -d  "$basedir/$target" ]; then
        git clone "$what" "$target"
    fi
    cd "$basedir/$target"

    echo "Resetting $target to $what_name..."
    git remote rm upstream > /dev/null 2>&1
    git remote add upstream "$basedir/$what" >/dev/null 2>&1
    git checkout master 2>/dev/null || git checkout -b master
    git fetch upstream >/dev/null 2>&1
    git reset --hard upstream/upstream

    echo "  Applying patches to $target..."

    git am --abort >/dev/null 2>&1
    git am --3way --ignore-whitespace "$basedir/${what_name}-Patches/"*.patch
    if [ "$?" != "0" ]; then
        echo "  Something did not apply cleanly to $target."
        echo "  Please review above details and finish the apply then"
        echo "  save the changes with rebuildPatches.sh"
        enableCommitSigningIfNeeded
        exit 1
    else
        echo "  Patches applied cleanly to $target"
    fi
}

# Disable GPG signing before AM, slows things down and doesn't play nicely.
# There is also zero rational or logical reason to do so for these sub-repo AMs.
# Calm down kids, it's re-enabled (if needed) immediately after, pass or fail.
if [[ "$gpgsign" == "true" ]]; then
    echo "_Temporarily_ disabling GPG signing"
    git config --global commit.gpgsign false
fi

# Apply waterfall patches
basedir=$basedir/Waterfall
pushd Waterfall
applyPatch BungeeCord Waterfall-Proxy HEAD
popd
basedir=$(dirname "$basedir")

# Apply travertine patches
applyPatch Waterfall/Waterfall-Proxy Travertine-Proxy HEAD

enableCommitSigningIfNeeded