#    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.nodes import nested_parse_with_titles

import projects


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': ''})
    yield ':PTL: %(name)s (``%(irc)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 ''
            doc_urls = deliverable.get('docs', {})
            doc_links = []
            if doc_urls.get('contributor'):
                doc_links.append('`Contributor <%s>`__' % doc_urls['contributor'])
            if doc_urls.get('api'):
                doc_links.append('`API <%s>`__' % doc_urls['api'])
            if doc_links:
                yield ':Documentation: ' + ' | '.join(doc_links)
            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(app):
    all_teams = projects.get_project_data()
    files = []
    for team, info in all_teams.items():
        slug = projects.slugify(team)
        filename = 'reference/projects/%s.rst' % slug
        app.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):
    app.info('loading teams extension')
    app.add_directive('teamslist', TeamsListDirective)
    _write_team_pages(app)