# Copyright 2016 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# repohooks/pre-upload.py currently does not run pylint. But for developers who
# want to check their code manually we disable several harmless pylint warnings
# which just distract from more serious remaining issues.
#
# The instance variable _android_cts is not defined in __init__().
# pylint: disable=attribute-defined-outside-init
#
# Many short variable names don't follow the naming convention.
# pylint: disable=invalid-name

import logging
import os

from autotest_lib.client.common_lib import error
from autotest_lib.server import hosts
from autotest_lib.server import utils
from autotest_lib.server.cros import camerabox_utils
from autotest_lib.server.cros import tradefed_constants as constants
from autotest_lib.server.cros import tradefed_test

# Maximum default time allowed for each individual CTS module.
_CTS_TIMEOUT_SECONDS = 3600

# Public download locations for android cts bundles.
_DL_CTS = 'https://dl.google.com/dl/android/cts/'
_CTS_URI = {
    'arm': _DL_CTS + 'android-cts-7.1_r28-linux_x86-arm.zip',
    'x86': _DL_CTS + 'android-cts-7.1_r28-linux_x86-x86.zip',
}
_CTS_MEDIA_URI = _DL_CTS + 'android-cts-media-1.4.zip'
_CTS_MEDIA_LOCALPATH = '/tmp/android-cts-media'


class cheets_CTS_N(tradefed_test.TradefedTest):
    """Sets up tradefed to run CTS tests."""
    version = 1

    _BRANCH_DEFAULT_RETRY = [(0, 10)]  # dev=beta=stable=10
    _BRANCH_MAX_RETRY = [(0, 10),      # dev=beta=10, stable=99
        (constants.APPROXIMATE_STABLE_BRANCH_NUMBER, 99)]
    _SHARD_CMD = '--shards'
    # TODO(pwang): b/110966363, remove it once scarlet is fixed.
    _NEED_DEVICE_INFO_BOARDS = ['scarlet', 'veyron_tiger']
    _SCENE_URI = ('https://storage.googleapis.com'
                  '/chromiumos-test-assets-public/camerabox/scene.pdf')

    def _tradefed_retry_command(self, template, session_id):
        """Build tradefed 'retry' command from template."""
        cmd = []
        for arg in template:
            if (arg == '--skip-device-info' and
                self._get_board_name() in self._NEED_DEVICE_INFO_BOARDS):
                continue
            cmd.append(arg.format(session_id=session_id))
        return cmd

    def _tradefed_run_command(self, template):
        """Build tradefed 'run' command from template."""
        cmd = []
        for arg in template:
            if (arg == '--skip-device-info' and
                self._get_board_name() in self._NEED_DEVICE_INFO_BOARDS):
                continue
            cmd.append(arg)
        # If we are running outside of the lab we can collect more data.
        if not utils.is_in_container():
            logging.info('Running outside of lab, adding extra debug options.')
            cmd.append('--log-level-display=DEBUG')
            cmd.append('--screenshot-on-failure')
            # TODO(ihf): Add log collection once b/28333587 fixed.
            # cmd.append('--collect-deqp-logs')
        return cmd

    def _get_default_bundle_url(self, bundle):
        return _CTS_URI[bundle]

    def _get_tradefed_base_dir(self):
        return 'android-cts'

    def _run_tradefed(self, commands):
        """Kick off CTS.

        @param commands: the command(s) to pass to CTS.
        @param datetime_id: For 'continue' datetime of previous run is known.
        @return: The result object from utils.run.
        """
        cts_tradefed = os.path.join(self._repository, 'tools', 'cts-tradefed')
        with tradefed_test.adb_keepalive(self._get_adb_targets(),
                                         self._install_paths):
            for command in commands:
                logging.info('RUN: ./cts-tradefed %s', ' '.join(command))
                output = self._run(
                    cts_tradefed,
                    args=tuple(command),
                    timeout=self._timeout * self._timeout_factor,
                    verbose=True,
                    ignore_status=False,
                    # Make sure to tee tradefed stdout/stderr to autotest logs
                    # continuously during the test run.
                    stdout_tee=utils.TEE_TO_LOGS,
                    stderr_tee=utils.TEE_TO_LOGS)
                logging.info('END: ./cts-tradefed %s\n', ' '.join(command))
        return output

    def _should_skip_test(self, bundle):
        """Some tests are expected to fail and are skipped."""
        # novato* are x86 VMs without binary translation. Skip the ARM tests.
        no_ARM_ABI_test_boards = ('novato', 'novato-arc64')
        if self._get_board_name() in no_ARM_ABI_test_boards and bundle == 'arm':
            return True
        return False

    def initialize_camerabox(self, camera_facing, cmdline_args):
        """Configure DUT and chart running in camerabox environment.
        @param camera_facing: the facing of the DUT used in testing
                              (e.g. 'front', 'back').
        """
        chart_address = camerabox_utils.get_chart_address(
                [h.hostname for h in self._hosts], cmdline_args)
        if chart_address is None:
            raise error.TestFail(
                    'Error: missing option --args="chart=<CHART IP>"')
        chart_hosts = [hosts.create_host(ip) for ip in chart_address]

        self.chart_fixtures = [
                camerabox_utils.ChartFixture(h, self._SCENE_URI)
                for h in chart_hosts
        ]
        self.dut_fixtures = [
                camerabox_utils.DUTFixture(self, h, camera_facing)
                for h in self._hosts
        ]

        for chart in self.chart_fixtures:
            chart.initialize()

        for dut in self.dut_fixtures:
            dut.initialize()

    def initialize(self,
                   camera_facing=None,
                   bundle=None,
                   uri=None,
                   host=None,
                   hosts=None,
                   max_retry=None,
                   load_waivers=True,
                   retry_manual_tests=False,
                   warn_on_test_retry=True,
                   cmdline_args=None,
                   hard_reboot_on_failure=False):
        super(cheets_CTS_N, self).initialize(
                bundle=bundle,
                uri=uri,
                host=host,
                hosts=hosts,
                max_retry=max_retry,
                load_waivers=load_waivers,
                retry_manual_tests=retry_manual_tests,
                warn_on_test_retry=warn_on_test_retry,
                hard_reboot_on_failure=hard_reboot_on_failure)
        if camera_facing:
            self.initialize_camerabox(camera_facing, cmdline_args)

    def run_once(self,
                 test_name,
                 run_template,
                 retry_template=None,
                 target_module=None,
                 target_plan=None,
                 target_class=None,
                 target_method=None,
                 needs_push_media=False,
                 enable_default_apps=False,
                 bundle=None,
                 extra_artifacts=[],
                 precondition_commands=[],
                 login_precondition_commands=[],
                 timeout=_CTS_TIMEOUT_SECONDS):
        """Runs the specified CTS once, but with several retries.

        Run an arbitrary tradefed command.

        @param test_name: the name of test. Used for logging.
        @param run_template: the template to construct the run command.
                             Example: ['run', 'commandAndExit', 'cts',
                                       '--skip-media-download']
        @param retry_template: the template to construct the retry command.
                               Example: ['run', 'commandAndExit', 'retry',
                                         '--skip-media-download', '--retry',
                                         '{session_id}']
        @param target_module: the name of test module to run.
        @param target_plan: the name of the test plan to run.
        @param target_class: the name of the class to be tested.
        @param target_method: the name of the method to be tested.
        @param needs_push_media: need to push test media streams.
        @param bundle: the type of the CTS bundle: 'arm' or 'x86'
        @param precondition_commands: a list of scripts to be run on the
        dut before the test is run, the scripts must already be installed.
        @param login_precondition_commands: a list of scripts to be run on the
        dut before the log-in for the test is performed.
        @param timeout: time after which tradefed can be interrupted.
        """
        self._run_tradefed_with_retries(
            test_name=test_name,
            run_template=run_template,
            retry_template=retry_template,
            timeout=timeout,
            target_module=target_module,
            target_plan=target_plan,
            media_asset=tradefed_test.MediaAsset(
                _CTS_MEDIA_URI if needs_push_media else None,
                _CTS_MEDIA_LOCALPATH),
            enable_default_apps=enable_default_apps,
            bundle=bundle,
            extra_artifacts=extra_artifacts,
            cts_uri=_CTS_URI,
            login_precondition_commands=login_precondition_commands,
            precondition_commands=precondition_commands)

    def cleanup_camerabox(self):
        """Cleanup configuration on DUT and chart tablet for running in
        camerabox environment.
        """
        for dut in self.dut_fixtures:
            dut.cleanup()

        for chart in self.chart_fixtures:
            chart.cleanup()

    def cleanup(self):
        if hasattr(self, 'dut_fixtures'):
            self.cleanup_camerabox()

        super(cheets_CTS_N, self).cleanup()