#!/usr/bin/env 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 $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
SOURCE=$([[ "$SOURCE" = /* ]] && echo "$SOURCE" || echo "$PWD/${SOURCE#./}")
basedir=$(dirname "$SOURCE")

paperstash() {
    STASHED=$(git stash)
}

paperunstash() {
    if [[ "$STASHED" != "No local changes to save" ]] ; then
        git stash pop
    fi
}

case "$1" in
    "rbp" | "rebuild")
        (
        cd "$basedir"
        scripts/rebuildPatches.sh "$basedir"
        )
    ;;
    "a" | "apply")
        (
        cd "$basedir"
        scripts/build.sh "$basedir"
        )
    ;;
    "j" | "jar")
        (
         cd "$basedir"
        scripts/build.sh "$basedir" "--jar"
        )
    ;;
    "r" | "root")
        cd "$basedir"
    ;;
    "api")
        cd "$basedir/Paper-API"
    ;;
    "serv" | "server")
        cd "$basedir"
    ;;
    "e" | "edit")
        case "$2" in
            "server")
                cd "$basedir/Paper-Server"
                export LAST_EDIT=$(pwd)

                paperstash
                git rebase -i upstream/upstream
                paperunstash
            ;;
            "api")
                cd "$basedir/Paper-API"
                export LAST_EDIT=$(pwd)

                paperstash
                git rebase -i upstream/upstream
                paperunstash
            ;;
            "continue")
                cd "$LAST_EDIT"
                git add .
                git rebase --continue
                unset LAST_EDIT
                (
                    cd "$basedir"
                    scripts/rebuildPatches.sh "$basedir"
                )
            ;;
            *)
                echo "You must edit either the api or server."
            ;;
        esac
    ;;
    "setup")
        if [[ -f ~/.bashrc ]] ; then
            (grep "alias paper=" ~/.bashrc > /dev/null) && (sed -i "s|alias paper=.*|alias paper='. $SOURCE'|g" ~/.bashrc) || (echo "alias paper='. $SOURCE'" >> ~/.bashrc)
            alias paper=". $SOURCE"
            echo "You can now just type 'paper' at any time to access the paper tool."
        fi
    ;;
    *)
        echo "rbp, rebuild | Rebuild patches, can be called from anywhere."
        echo "p, patch     | Apply all patches to the project without building it. Can be run from anywhere."
        echo "j, jar       | Apply all patches and build the project, paperclip.jar will be output. Can be run from anywhere."
        echo "r, root      | Change directory to the root of the project."
        echo "api          | Move to the Paper-API directory."
        echo "serv, server | Move to the Paper-Server directory."
        echo "e, edit      | Use to edit a specific patch, give it the argument \"server\" or \"api\""
        echo "             | respectively to edit the correct project. Use the argument \"continue\" after"
        echo "             | the changes have been made to finish and rebuild patches. Can be called from anywhere."
        echo "setup        | Add an alias to .bashrc to allow full functionality of this script. Run as:"
        echo "             |     . ./paper setup"
        echo "             | After you run this command you'll be able to just run 'paper' from anywhere."
    ;;
esac

unset -f paperstash
unset -f paperunstash