#    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.

"""Report on the current list of projects.
"""

from docutils import nodes
from docutils.parsers import rst
from docutils import statemachine
from sphinx.util import logging
from sphinx.util.nodes import nested_parse_with_titles

import projects

LOG = logging.getLogger(__name__)

IRC_LOG_URL_BASE = 'http://eavesdrop.openstack.org/irclogs/%23'


def _team_to_rst(name, info):

    if 'service' in info:
        title = "{0} ({1})".format(name.title(), info['service'])
    elif name == 'I18n':
        title = name
    else:
        title = name.title()

    yield '.. _project-%s:' % projects.slugify(name)
    yield ''
    yield '=' * len(title)
    yield title
    yield '=' * len(title)
    yield ''
    yield ':Home Page: ' + info.get('url', '')
    ptl = info.get('ptl', {'name': '', 'irc': '', 'email': ''})
    yield ':PTL: %(name)s (``%(irc)s``) <%(email)s>' % ptl
    irc_channel = info.get('irc-channel')
    if irc_channel:
        yield ':IRC Channel: `#%s <%s%s>`__' % (
            irc_channel, IRC_LOG_URL_BASE, irc_channel)
    service = info.get('service')
    if service:
        yield ':Service: ' + service
    yield ''
    mission = info.get('mission', '').rstrip()
    if mission:
        yield "Mission"
        yield '-------'
        yield ''
        yield mission
        yield ''
    tags = info.get('tags', [])
    if tags:
        yield 'Team-based tags'
        yield '---------------'
        yield ''
        for tag in tags:
            yield '- :ref:`tag-%s`' % tag
        yield ''
    yield 'Deliverables'
    yield '------------'
    yield ''
    deliverables = info.get('deliverables', [])
    if deliverables:
        for repo_name, deliverable in deliverables.items():
            yield repo_name
            yield '~' * len(repo_name)
            yield ''
            yield ':Repositories: ' + ', '.join(
                ':repo:`%s`' % repo
                for repo in deliverable.get('repos', [])
            )
            yield ''
            tags = deliverable.get('tags', [])
            if tags:
                yield ':Tags:'
                yield ''
                for tag in tags:
                    yield '  - :ref:`tag-%s`' % tag
                yield ''
    else:
        yield 'None'
    yield ''
    yield 'Extra ATCs'
    yield '-----------'
    yield '.. extraatcstable::'
    yield '   :project: %s' % name
    yield ''


def _write_team_pages():
    all_teams = projects.get_project_data()
    files = []
    for team, info in all_teams.items():
        slug = projects.slugify(team)
        filename = 'reference/projects/%s.rst' % slug
        LOG.info('generating team page for %s' % team)
        with open(filename, 'w', encoding='utf-8') as f:
            f.write('\n'.join(_team_to_rst(team, info)))
        files.append(filename)
    return files


class TeamsListDirective(rst.Directive):

    has_content = False

    def run(self):
        all_teams = projects.get_project_data()

        # Build the view of the data to be parsed for rendering.
        result = statemachine.ViewList()
        for team_name in sorted(all_teams.keys()):
            team_info = all_teams[team_name]
            for line in _team_to_rst(team_name, team_info):
                result.append(line, '<' + __name__ + '>')

        # Parse what we have into a new section.
        node = nodes.section()
        node.document = self.state.document
        nested_parse_with_titles(self.state, result, node)

        return node.children


def setup(app):
    LOG.info('loading teams extension')
    app.add_directive('teamslist', TeamsListDirective)
    _write_team_pages()