#!/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()
  if (args.libcc_source_path != None and
      args.libcc_shared_library_path != None and
      args.libcc_static_library_path != None):
    if (not os.path.isdir(args.libcc_source_path)):
      print "Error: Directory does not exist:", args.libcc_source_path
      sys.exit(0)
    elif (not os.path.isdir(args.libcc_shared_library_path)):
      print "Error: Directory does not exist:", args.libcc_shared_library_path
      sys.exit(0)
    elif (not os.path.isdir(args.libcc_static_library_path)):
      print "Error: Directory does not exist:", args.libcc_static_library_path
      sys.exit(0)
  elif (args.libcc_source_path != None or
        args.libcc_shared_library_path != None or
        args.libcc_static_library_path != None):
    print "Error: All options of libchromiumcontent are required OR let " \
          "brightray choose it"
    sys.exit(0)
  update_submodules()
  setup_libchromiumcontent(args.dev, args.commit, args.target_arch, args.url,
                           args.libcc_source_path,
                           args.libcc_shared_library_path,
                           args.libcc_static_library_path)


def parse_args():
  parser = argparse.ArgumentParser(description='Bootstrap this project')
  parser.add_argument('-c', '--commit', required=True,
                      help='The commit of libchromiumcontent to download.')
  parser.add_argument('-d', '--dev', action='store_true',
                      help='Do not download static_library build')
  parser.add_argument('--target_arch', required=True,
                      help='The arch 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')
  parser.add_argument('--libcc_source_path', required=False,
                        help='The source path of libchromiumcontent. ' \
                        'NOTE: All options of libchromiumcontent are '
                        'required OR let brightray choose it')
  parser.add_argument('--libcc_shared_library_path', required=False,
                        help='The shared library path of libchromiumcontent. ' \
                        'NOTE: All options of libchromiumcontent are ' \
                        'required OR let brightray choose it')
  parser.add_argument('--libcc_static_library_path', required=False,
                        help='The static library path of libchromiumcontent. ' \
                        'NOTE: All options of libchromiumcontent are ' \
                        'required OR let brightray choose it')
  return parser.parse_args()


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


def setup_libchromiumcontent(is_dev, commit, target_arch, url,
                             libcc_source_path,
                             libcc_shared_library_path,
                             libcc_static_library_path):
  target_dir = os.path.join(DOWNLOAD_DIR, 'libchromiumcontent')
  download = os.path.join(VENDOR_DIR, 'libchromiumcontent', 'script',
                          'download')
  args = ['-f', '-c', commit, '--target_arch', target_arch, url, target_dir]
  if (libcc_source_path != None and
      libcc_shared_library_path != None and
      libcc_static_library_path != None):
    args += ['--libcc_source_path', libcc_source_path,
            '--libcc_shared_library_path', libcc_shared_library_path,
            '--libcc_static_library_path', libcc_static_library_path]
    mkdir_p(target_dir)
  else:
    mkdir_p(DOWNLOAD_DIR)
  if is_dev:
    subprocess.check_call([sys.executable, download] + args)
  else:
    subprocess.check_call([sys.executable, download, '-s'] + args)


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


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