# 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.

"""Module containing utility functions for reporting results."""

import logging
import os
import re

from pylib import constants
from pylib.results.flakiness_dashboard import results_uploader
from pylib.utils import logging_utils


def _LogToFile(results, test_type, suite_name):
  """Log results to local files which can be used for aggregation later."""
  log_file_path = os.path.join(constants.GetOutDirectory(), 'test_logs')
  if not os.path.exists(log_file_path):
    os.mkdir(log_file_path)
  full_file_name = os.path.join(
      log_file_path, re.sub(r'\W', '_', test_type).lower() + '.log')
  if not os.path.exists(full_file_name):
    with open(full_file_name, 'w') as log_file:
      print >> log_file, '\n%s results for %s build %s:' % (
          test_type, os.environ.get('BUILDBOT_BUILDERNAME'),
          os.environ.get('BUILDBOT_BUILDNUMBER'))
    logging.info('Writing results to %s.', full_file_name)

  logging.info('Writing results to %s.', full_file_name)
  with open(full_file_name, 'a') as log_file:
    shortened_suite_name = suite_name[:25] + (suite_name[25:] and '...')
    print >> log_file, '%s%s' % (shortened_suite_name.ljust(30),
                                 results.GetShortForm())


def _LogToFlakinessDashboard(results, test_type, test_package,
                             flakiness_server):
  """Upload results to the flakiness dashboard"""
  logging.info('Upload results for test type "%s", test package "%s" to %s',
               test_type, test_package, flakiness_server)

  try:
    # TODO(jbudorick): remove Instrumentation once instrumentation tests
    # switch to platform mode.
    if test_type in ('instrumentation', 'Instrumentation'):
      if flakiness_server == constants.UPSTREAM_FLAKINESS_SERVER:
        assert test_package in ['ContentShellTest',
                                'ChromePublicTest',
                                'ChromeSyncShellTest',
                                'SystemWebViewShellLayoutTest',
                                'WebViewInstrumentationTest']
        dashboard_test_type = ('%s_instrumentation_tests' %
                               test_package.lower().rstrip('test'))
      # Downstream server.
      else:
        dashboard_test_type = 'Chromium_Android_Instrumentation'

    elif test_type == 'gtest':
      dashboard_test_type = test_package

    else:
      logging.warning('Invalid test type')
      return

    results_uploader.Upload(
        results, flakiness_server, dashboard_test_type)

  except Exception: # pylint: disable=broad-except
    logging.exception('Failure while logging to %s', flakiness_server)


def LogFull(results, test_type, test_package, annotation=None,
            flakiness_server=None):
  """Log the tests results for the test suite.

  The results will be logged three different ways:
    1. Log to stdout.
    2. Log to local files for aggregating multiple test steps
       (on buildbots only).
    3. Log to flakiness dashboard (on buildbots only).

  Args:
    results: An instance of TestRunResults object.
    test_type: Type of the test (e.g. 'Instrumentation', 'Unit test', etc.).
    test_package: Test package name (e.g. 'ipc_tests' for gtests,
                  'ContentShellTest' for instrumentation tests)
    annotation: If instrumenation test type, this is a list of annotations
                (e.g. ['Feature', 'SmallTest']).
    flakiness_server: If provider, upload the results to flakiness dashboard
                      with this URL.
    """
  # pylint doesn't like how colorama set up its color enums.
  # pylint: disable=no-member
  black_on_white = (logging_utils.BACK.WHITE, logging_utils.FORE.BLACK)
  with logging_utils.OverrideColor(logging.CRITICAL, black_on_white):
    if not results.DidRunPass():
      logging.critical('*' * 80)
      logging.critical('Detailed Logs')
      logging.critical('*' * 80)
      for line in results.GetLogs().splitlines():
        logging.critical(line)
    logging.critical('*' * 80)
    logging.critical('Summary')
    logging.critical('*' * 80)
    for line in results.GetGtestForm().splitlines():
      color = black_on_white
      if 'FAILED' in line:
        # Red on white, dim.
        color = (logging_utils.BACK.WHITE, logging_utils.FORE.RED,
                 logging_utils.STYLE.DIM)
      elif 'PASSED' in line:
        # Green on white, dim.
        color = (logging_utils.BACK.WHITE, logging_utils.FORE.GREEN,
                 logging_utils.STYLE.DIM)
      with logging_utils.OverrideColor(logging.CRITICAL, color):
        logging.critical(line)
    logging.critical('*' * 80)

  if os.environ.get('BUILDBOT_BUILDERNAME'):
    # It is possible to have multiple buildbot steps for the same
    # instrumenation test package using different annotations.
    if annotation and len(annotation) == 1:
      suite_name = annotation[0]
    else:
      suite_name = test_package
    _LogToFile(results, test_type, suite_name)

    if flakiness_server:
      _LogToFlakinessDashboard(results, test_type, test_package,
                               flakiness_server)