# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import print_function

import pprint
import time

from heatclient.common import event_utils
from openstackclient import shell
from tripleoclient import exceptions
from tripleoclient import utils

from tripleoclient.workflows import base


def update(clients, **workflow_input):
    workflow_client = clients.workflow_engine
    tripleoclients = clients.tripleoclient
    queue_name = workflow_input['queue_name']
    plan_name = workflow_input['container']

    with tripleoclients.messaging_websocket(queue_name) as ws:
        execution = base.start_workflow(
            workflow_client,
            'tripleo.package_update.v1.package_update_plan',
            workflow_input=workflow_input
        )

        for payload in base.wait_for_messages(workflow_client, ws, execution):
            assert payload['status'] == "SUCCESS", pprint.pformat(payload)

    orchestration_client = clients.orchestration

    events = event_utils.get_events(orchestration_client,
                                    stack_id=plan_name,
                                    event_args={'sort_dir': 'desc',
                                                'limit': 1})
    marker = events[0].id if events else None

    time.sleep(10)
    create_result = utils.wait_for_stack_ready(
        orchestration_client, plan_name, marker, 'UPDATE', 1)
    if not create_result:
        shell.OpenStackShell().run(["stack", "failures", "list", plan_name])
        raise exceptions.DeploymentError("Heat Stack update failed.")


def get_config(clients, **workflow_input):
    workflow_client = clients.workflow_engine
    tripleoclients = clients.tripleoclient

    with tripleoclients.messaging_websocket() as ws:
        execution = base.start_workflow(
            workflow_client,
            'tripleo.package_update.v1.get_config',
            workflow_input=workflow_input
        )

        for payload in base.wait_for_messages(workflow_client, ws, execution):
            assert payload['status'] == "SUCCESS", pprint.pformat(payload)

    if payload['status'] == 'SUCCESS':
        print('Success')
    else:
        raise RuntimeError('Minor update failed with: {}'.format(payload))


def update_ansible(clients, **workflow_input):
    workflow_client = clients.workflow_engine
    tripleoclients = clients.tripleoclient
    queue_name = workflow_input['queue_name']
    ansible_queue = workflow_input['ansible_queue_name']

    with tripleoclients.messaging_websocket(queue_name) as ws:
        execution = base.start_workflow(
            workflow_client,
            'tripleo.package_update.v1.update_nodes',
            workflow_input=workflow_input
        )

        with tripleoclients.messaging_websocket(ansible_queue) as update_ws:
            for payload in base.wait_for_messages(workflow_client,
                                                  update_ws,
                                                  execution):
                # Need to sleep a little, to let the time for the execution
                # to get the right status in between. It avoid to fall in the
                # while True loop to get messages
                time.sleep(5)
                if payload.get('message'):
                    pprint.pprint(payload['message'].splitlines())

        for payload in base.wait_for_messages(workflow_client, ws, execution):
            if payload.get('message'):
                print(payload)

    if payload['status'] == 'SUCCESS':
        print('Success')
    else:
        raise RuntimeError('Minor update failed with: {}'.format(payload))