#!/bin/sh
################################################################################
#      This file is part of LibreELEC - https://libreelec.tv
#      Copyright (C) 2016 Team LibreELEC
#
#  LibreELEC is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 2 of the License, or
#  (at your option) any later version.
#
#  LibreELEC is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with LibreELEC.  If not, see <http://www.gnu.org/licenses/>.
################################################################################

git_clone() {
  # git_clone https://repo.url branch ./target_dir [githash]
  echo "[mkpkg] Checking out $1 ..."
  if [ ! -d "$3" ]; then
    git clone --recursive "$1" -b $2 "$3"
  else
    if [ -d "$3" ] ; then
      cd "$3"
      git checkout $2 >/dev/null 2>/dev/null
      git pull
      cd ..
    fi
  fi
  if [ ! -z "$4" ] ; then
    cd "$3"
    git fetch >/dev/null 2>/dev/null
    git branch -D $4 >/dev/null 2>/dev/null
    git checkout $4 -b ref-$4 >/dev/null 2>/dev/null
    cd ..
  fi
}

resolve_hash() {
  if [ -d "$1" ] ; then
    cd "$1"
    git rev-parse --short $2 2>/dev/null
  fi
}

if [ -z "$1" ]; then
  echo "Usage: $0 <emulator-name>"
  exit 0
else
  . ../../packages/emulation/$1/package.mk
  git_clone $PKG_SITE master $PKG_NAME.git

  if [ -f ../../packages/emulation/$PKG_NAME/package.mk ] ; then
    # update package.mk
    RESOLVED_HASH=$(resolve_hash $PKG_NAME.git master)
    sed -i "s|PKG_VERSION=.*|PKG_VERSION=\"$RESOLVED_HASH\"|g" ../../packages/emulation/$PKG_NAME/package.mk
  fi
fi