#!/usr/bin/env python
# Copyright 2020 The Tint Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Parse a DEPS file and rolls all of the dependencies.
"""

import os
import re
import subprocess
import sys


DEFAULT_DEPS_PATH = os.path.normpath(
  os.path.join(os.path.dirname(__file__), os.pardir, 'DEPS'))


def parse_file_to_dict(path):
  dictionary = {}
  contents = open(path).read()
  # Need to convert Var() to vars[], so that the DEPS is actually Python. Var()
  # comes from Autoroller using gclient which has a slightly different DEPS
  # format.
  contents = re.sub(r"Var\((.*?)\)", r"vars[\1]", contents)
  exec(contents, dictionary)
  return dictionary


def roll_all_deps(deps_file_path):
  deps_file_directory = os.path.dirname(deps_file_path)
  deps_file = parse_file_to_dict(deps_file_path)

  dependencies = deps_file['deps'].copy()

  list_of_deps = ['roll-dep', '--ignore-dirty-tree']
  for directory in sorted(deps_file['deps']):
    # cpplint uses gh-pages as the main branch, not master which doesn't work
    # with roll-dep
    if directory == "third_party/cpplint":
      continue

    relative_directory = os.path.join(deps_file_directory, directory)
    list_of_deps.append(relative_directory)

  subprocess.check_call(list_of_deps)


def main(argv):
  deps_file_path = DEFAULT_DEPS_PATH

  roll_all_deps(deps_file_path)


if __name__ == '__main__':
  exit(main(sys.argv[1:]))