#!/bin/bash
# get base dir regardless of execution location
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
    DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
    SOURCE="$(readlink "$SOURCE")"
    [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
initScript=$(dirname "$SOURCE")/init.sh
. "$initScript"

PS1="$"
log_info "Rebuilding patches from current state..."
function savePatches {
    what=$1
    cd "$basedir/$what/"

    mkdir -p "$basedir/patches/$2"
    if [ -d ".git/rebase-apply" ]; then
        # in middle of a rebase, be smarter
        echo "REBASE DETECTED - PARTIAL SAVE"
        last=$(cat ".git/rebase-apply/last")
        next=$(cat ".git/rebase-apply/next")
        for i in $(seq -f "%04g" 1 1 $last)
        do
            if [ $i -lt $next ]; then
                for patchFile in "$basedir/patches/$2/${i}-"*.patch
                do
                    rm "$patchFile"
                done
                #rm $basedir/patches/$2/${i}-*.patch
            fi
        done
    else
        #rm $(sed 's/ /\\ /g' <<< $basedir)/patches/$2/*.patch
        for patchFile in "$basedir/patches/$2/"*.patch
        do
            rm "$patchFile"
        done
    fi

    git format-patch --quiet --no-stat -N -o "$basedir/patches/$2" upstream/upstream
    cd "$basedir"
    git add -A "$basedir/patches/$2"
    cleanupPatches "$basedir/patches/$2/"
    echo "  Patches saved for $what to patches/$2"
}

savePatches mSpigot-API api
savePatches mSpigot-Server server

log_info "Patches successfully rebuilt"