# Copyright 2020 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.

from autotest_lib.client.common_lib.cros import kernel_utils
from autotest_lib.server.cros.update_engine import update_engine_test


class autoupdate_FromUI(update_engine_test.UpdateEngineTest):
    """Trigger an update from the UI.

    Start an update by clicking on the 'Check for update' button in the
    Chrome OS settings menu, instead of calling to update_engine_client
    directly.

    """
    version = 1
    _UI_TEST = 'autoupdate_UpdateFromUI'


    def run_once(self, full_payload=True, job_repo_url=None,
                 running_at_desk=False):
        """
        Tests that we can successfully perform an update via the UI.

        @param full_payload: True for a full payload. False for delta.
        @param job_repo_url: Used for debugging locally. This is used to figure
                             out the current build and the devserver to use.
                             The test will read this from a host argument
                             when run in the lab.
        @param running_at_desk: True if the test is being run locally.

        """
        payload_url = self.get_payload_for_nebraska(
            job_repo_url, full_payload=full_payload,
            public_bucket=running_at_desk)

        active, inactive = kernel_utils.get_kernel_state(self._host)
        # Login and click 'Check for update' in the Settings app.
        self._run_client_test_and_check_result(self._UI_TEST,
                                               payload_url=payload_url)

        self._host.reboot()

        # Check that the update completed successfully
        rootfs_hostlog, _ = self._create_hostlog_files()
        self.verify_update_events(self._CUSTOM_LSB_VERSION, rootfs_hostlog)
        kernel_utils.verify_boot_expectations(inactive, host=self._host)