#!/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 "${SCRIPT_DIR}/compiler/"
(cat <<EOT && cat contrib/externs/chrome_extensions.js) > "${SCRIPT_DIR}/externs/chrome_extensions.js"
//    SSSSSSSSSSSSSSS TTTTTTTTTTTTTTTTTTTTTTT     OOOOOOOOO     PPPPPPPPPPPPPPPPP
//  SS:::::::::::::::ST:::::::::::::::::::::T   OO:::::::::OO   P::::::::::::::::P
// S:::::SSSSSS::::::ST:::::::::::::::::::::T OO:::::::::::::OO P::::::PPPPPP:::::P
// S:::::S     SSSSSSST:::::TT:::::::TT:::::TO:::::::OOO:::::::OPP:::::P     P:::::P
// S:::::S            TTTTTT  T:::::T  TTTTTTO::::::O   O::::::O  P::::P     P:::::P
// S:::::S                    T:::::T        O:::::O     O:::::O  P::::P     P:::::P
//  S::::SSSS                                                     P::::PPPPPP:::::P
//   SS::::::SSSSS       This file is generated. To update it,    P:::::::::::::PP
//     SSS::::::::SS          run bump_compiler_version.          P::::PPPPPPPPP
//        SSSSSS::::S                                             P::::P
//             S:::::S        T:::::T        O:::::O     O:::::O  P::::P
//             S:::::S        T:::::T        O::::::O   O::::::O  P::::P
// SSSSSSS     S:::::S      TT:::::::TT      O:::::::OOO:::::::OPP::::::PP
// S::::::SSSSSS:::::S      T:::::::::T       OO:::::::::::::OO P::::::::P
// S:::::::::::::::SS       T:::::::::T         OO:::::::::OO   P::::::::P
//  SSSSSSSSSSSSSSS         TTTTTTTTTTT           OOOOOOOOO     PPPPPPPPPP
EOT

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

cleanup