# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# 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.

"""
The Zuul module adds triggers that configure jobs for use with Zuul_.

To change the Zuul notification URL, set a global default::

  - defaults:
    name: global
    zuul-url: http://127.0.0.1:8001/jenkins_endpoint

The above URL is the default.

.. _Zuul: http://ci.openstack.org/zuul/
"""


def zuul():
    """yaml: zuul
    Configure this job to be triggered by Zuul.

    Example::

      triggers:
        - zuul
    """


def zuul_post():
    """yaml: zuul-post
    Configure this post-merge job to be triggered by Zuul.

    Example::

      triggers:
        - zuul-post
    """

import jenkins_jobs.modules.base

ZUUL_PARAMETERS = [
    {'string':
        {'description': 'Zuul provided key to link builds with Gerrit events',
         'name': 'ZUUL_UUID'}},
    {'string':
        {'description': 'Zuul provided key to link builds with Gerrit'
         ' events (deprecated use ZUUL_UUID instead)',
         'name': 'UUID'}},
    {'string':
        {'description': 'Zuul pipeline triggering this job',
         'name': 'ZUUL_PIPELINE'}},
    {'string':
        {'description': 'URL of Zuul\'s git repos accessible to workers',
         'name': 'ZUUL_URL'}},
    {'string':
        {'description': 'Branch name of triggering project',
         'name': 'ZUUL_PROJECT'}},
    {'string':
        {'description': 'Branch name of triggering change',
         'name': 'ZUUL_BRANCH'}},
    {'string':
        {'description': 'List of dependent changes to merge',
         'name': 'ZUUL_CHANGES'}},
    {'string':
        {'description': 'Reference for the merged commit(s) to use',
         'name': 'ZUUL_REF'}},
    {'string':
        {'description': 'The commit SHA1 at the head of ZUUL_REF',
         'name': 'ZUUL_COMMIT'}},
    {'string':
        {'description': 'List of included changes',
         'name': 'ZUUL_CHANGE_IDS'}},
    {'string':
        {'description': 'ID of triggering change',
         'name': 'ZUUL_CHANGE'}},
    {'string':
        {'description': 'Patchset of triggering change',
         'name': 'ZUUL_PATCHSET'}},
]

ZUUL_POST_PARAMETERS = [
    {'string':
        {'description': 'Zuul provided key to link builds with Gerrit events',
         'name': 'ZUUL_UUID'}},
    {'string':
        {'description': 'Zuul provided key to link builds with Gerrit'
         ' events (deprecated use ZUUL_UUID instead)',
         'name': 'UUID'}},
    {'string':
        {'description': 'Zuul pipeline triggering this job',
         'name': 'ZUUL_PIPELINE'}},
    {'string':
        {'description': 'URL of Zuul\'s git repos accessible to workers',
         'name': 'ZUUL_URL'}},
    {'string':
        {'description': 'Branch name of triggering project',
         'name': 'ZUUL_PROJECT'}},
    {'string':
        {'description': 'Name of updated reference triggering this job',
         'name': 'ZUUL_REF'}},
    {'string':
        {'description': 'Name of updated reference triggering this job',
         'name': 'ZUUL_REFNAME'}},
    {'string':
        {'description': 'Old SHA at this reference',
         'name': 'ZUUL_OLDREV'}},
    {'string':
        {'description': 'New SHA at this reference',
         'name': 'ZUUL_NEWREV'}},
    {'string':
        {'description': 'Shortened new SHA at this reference',
         'name': 'ZUUL_SHORT_NEWREV'}},
]

DEFAULT_URL = 'http://127.0.0.1:8001/jenkins_endpoint'


class Zuul(jenkins_jobs.modules.base.Base):
    sequence = 0

    def handle_data(self, parser):
        changed = False
        jobs = (parser.data.get('job', {}).values() +
                parser.data.get('job-template', {}).values())
        for job in jobs:
            triggers = job.get('triggers')
            if not triggers:
                continue

            if ('zuul' not in job.get('triggers', []) and
                'zuul-post' not in job.get('triggers', [])):
                continue
            if 'parameters' not in job:
                job['parameters'] = []
            if 'notifications' not in job:
                job['notifications'] = []
            # This isn't a good pattern, and somewhat violates the
            # spirit of the global defaults, but Zuul is working on
            # a better design that should obviate the need for most
            # of this module, so this gets it doen with minimal
            # intrusion to the rest of JJB.
            if parser.data.get('defaults', {}).get('global'):
                url = parser.data['defaults']['global'].get(
                    'zuul-url', DEFAULT_URL)
            notifications = [{'http': {'url': url}}]
            job['notifications'].extend(notifications)
            if 'zuul' in job.get('triggers', []):
                job['parameters'].extend(ZUUL_PARAMETERS)
                job['triggers'].remove('zuul')
            if 'zuul-post' in job.get('triggers', []):
                job['parameters'].extend(ZUUL_POST_PARAMETERS)
                job['triggers'].remove('zuul-post')
            changed = True
        return changed