# Copyright (c) 2013 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.

"""Presubmit script for android buildbot.

See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
details on the presubmit API built into gcl.
"""

_DELETIONS_ONLY_FILES = (
    'build/android/findbugs_filter/findbugs_known_bugs.txt',
)


def _CheckDeletionsOnlyFiles(input_api, output_api):
  """Check that a certain listed files only have deletions.
  """
  warnings = []
  for f in input_api.AffectedFiles():
    if f.LocalPath() in _DELETIONS_ONLY_FILES:
      if f.ChangedContents():
        warnings.append(f.LocalPath())
  results = []
  if warnings:
    results.append(output_api.PresubmitPromptWarning(
        'Following files should only contain deletions.', warnings))
  return results


def CommonChecks(input_api, output_api):
  output = []

  def J(*dirs):
    """Returns a path relative to presubmit directory."""
    return input_api.os_path.join(input_api.PresubmitLocalPath(), *dirs)

  output.extend(input_api.canned_checks.RunPylint(
      input_api,
      output_api,
      white_list=[r'PRESUBMIT\.py$', r'buildbot/.*\.py$'],
      extra_paths_list=[
          J(), J('..', '..', 'third_party', 'android_testrunner'),
          J('buildbot')]))

  output.extend(input_api.canned_checks.RunUnitTestsInDirectory(
      input_api, output_api, J('buildbot', 'tests')))
  output.extend(_CheckDeletionsOnlyFiles(input_api, output_api))
  return output


def CheckChangeOnUpload(input_api, output_api):
  return CommonChecks(input_api, output_api)


def CheckChangeOnCommit(input_api, output_api):
  return CommonChecks(input_api, output_api)