#!/bin/bash
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Download the newest version of Closure Compiler, build it and put into Chrome
# source tree. Also update externs/chrome_extensions.js.

readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
readonly TEMP_DIR=$(mktemp -d)

cleanup() {
  echo "Cleaning up..."
  rm -rf "${TEMP_DIR}"
}

trap cleanup SIGINT SIGHUP SIGTERM

cd "${TEMP_DIR}"
echo "Cloning Closure Compiler repo"
git clone https://github.com/google/closure-compiler.git

cd closure-compiler
echo "Building Closure Compiler"
ant jar

if [[ "$?" -ne 0 ]]; then
  echo "Failed to build jar, copying nothing" >&2
  cleanup
  exit 1
fi

echo "Copying compiler.jar and chrome_extensions.js"
cp build/compiler.jar "${SCRIPT_DIR}/compiler/"
cp contrib/externs/chrome_extensions.js "${SCRIPT_DIR}/externs/"

echo "Rebuilding runner.jar"
"${SCRIPT_DIR}/runner/build_runner_jar.py"

cleanup