#!/usr/bin/env python

import argparse
import errno
import os
import subprocess
import sys


SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
VENDOR_DIR = os.path.join(SOURCE_ROOT, 'vendor')
DOWNLOAD_DIR = os.path.join(VENDOR_DIR, 'download')


def main():
    args = parse_args()
    return (update_submodules() or
            download_libchromiumcontent(args.commit, args.url))


def parse_args():
    parser = argparse.ArgumentParser(description='Bootstrap this project')
    parser.add_argument('-c', '--commit', nargs='?', default='HEAD',
                        help='The commit of libchromiumcontent to download.')
    parser.add_argument('url', help='The base URL from which to download '
                        'libchromiumcontent (i.e., the URL you passed to '
                        'libchromiumcontent\'s script/upload script')
    return parser.parse_args()


def update_submodules():
    return (subprocess.call(['git', 'submodule', 'sync', '--quiet']) or
            subprocess.call(['git', 'submodule', 'update', '--init',
                             '--recursive']))


def download_libchromiumcontent(commit, url):
    mkdir_p(DOWNLOAD_DIR)
    download = os.path.join(VENDOR_DIR, 'libchromiumcontent', 'script',
                            'download')
    return subprocess.call([sys.executable, download, '-f', '-c', commit, url,
                            os.path.join(DOWNLOAD_DIR, 'libchromiumcontent')])


def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as e:
        if e.errno != errno.EEXIST:
            raise


if __name__ == '__main__':
    sys.exit(main())