#!/usr/bin/env vpython3
# Copyright 2020 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Run a program's constraint checks on a project."""

import argparse
import os
import pathlib

from checker import constraint_suite_discovery
from checker import io_utils

COMMON_CHECKS_PATH = os.path.join(
    os.path.dirname(__file__), 'checker', 'common_checks')


def argument_parser():
  """Returns an ArgumentParser for the script."""
  parser = argparse.ArgumentParser(description=__doc__)
  parser.add_argument(
      '--program',
      required=True,
      help=('Path to the program config json proto e.g. '
            '.../chromiumos/src/program/program1/generated/config.jsonproto.'),
      metavar='PATH')
  parser.add_argument(
      '--project',
      required=True,
      help=('Path to the project config binary proto e.g. '
            '.../chromiumos/src/project/project1/generated/config.jsonproto.'),
      metavar='PATH')
  parser.add_argument(
      '--factory_dir',
      # TODO(crbug.com/1085429): Require this once passed by Recipes.
      required=False,
      type=pathlib.Path,
      help=('Path to the project factory confir dir e.g.'
            '.../chromiumos/src/project/project1/factory'),
      metavar='PATH',
  )
  return parser


def main():
  """Runs the script."""
  parser = argument_parser()
  args = parser.parse_args()

  project_config = io_utils.read_config(args.project)
  program_config = io_utils.read_config(args.program)

  # Expect program checks in a 'checks' dir under the root of the program repo.
  # Note that args.program points to the generated file, so use dirname + '..'
  # to find the root of the program repo.
  program_checks_dir = os.path.join(os.path.dirname(args.program), '../checks')

  constraint_suite_directories = [
      program_checks_dir,
      COMMON_CHECKS_PATH,
  ]

  # If two suites have the same name, only run the one in the program directory.
  # This allows programs to override common suites.
  constraint_suites = {}
  for directory in constraint_suite_directories:
    for suite in constraint_suite_discovery.discover_suites(directory):
      suite_name = suite.__class__.__name__
      if suite_name not in constraint_suites:
        constraint_suites[suite_name] = suite

  for suite in constraint_suites.values():
    suite.run_checks(
        program_config=program_config,
        project_config=project_config,
        factory_dir=args.factory_dir,
        verbose=1,
    )


if __name__ == '__main__':
  main()