# -*- coding: utf-8 -*-
"""
    rhodecode.controllers.feed
    ~~~~~~~~~~~~~~~~~~~~~~~~~~

    Feed controller for rhodecode

    :created_on: Apr 23, 2010
    :author: marcink
    :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
    :license: GPLv3, see COPYING for more details.
"""
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import logging

from pylons import url, response, tmpl_context as c
from pylons.i18n.translation import _

from rhodecode.lib import safe_unicode
from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
from rhodecode.lib.base import BaseRepoController

from webhelpers.feedgenerator import Atom1Feed, Rss201rev2Feed

log = logging.getLogger(__name__)


class FeedController(BaseRepoController):

    @LoginRequired(api_access=True)
    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                   'repository.admin')
    def __before__(self):
        super(FeedController, self).__before__()
        #common values for feeds
        self.description = _('Changes on %s repository')
        self.title = self.title = _('%s %s feed') % (c.rhodecode_name, '%s')
        self.language = 'en-us'
        self.ttl = "5"
        self.feed_nr = 10

    def _get_title(self, cs):
        return "R%s:%s - %s" % (
            cs.revision, cs.short_id, cs.message
        )

    def __changes(self, cs):
        changes = []

        a = [safe_unicode(n.path) for n in cs.added]
        if a:
            changes.append('\nA ' + '\nA '.join(a))

        m = [safe_unicode(n.path) for n in cs.changed]
        if m:
            changes.append('\nM ' + '\nM '.join(m))

        d = [safe_unicode(n.path) for n in cs.removed]
        if d:
            changes.append('\nD ' + '\nD '.join(d))

        changes.append('</pre>')

        return ''.join(changes)

    def atom(self, repo_name):
        """Produce an atom-1.0 feed via feedgenerator module"""
        feed = Atom1Feed(
             title=self.title % repo_name,
             link=url('summary_home', repo_name=repo_name,
                      qualified=True),
             description=self.description % repo_name,
             language=self.language,
             ttl=self.ttl
        )

        for cs in reversed(list(c.rhodecode_repo[-self.feed_nr:])):
            desc_msg = []
            desc_msg.append('%s - %s<br/><pre>' % (cs.author, cs.date))
            desc_msg.append(self.__changes(cs))

            feed.add_item(title=self._get_title(cs),
                          link=url('changeset_home', repo_name=repo_name,
                                   revision=cs.raw_id, qualified=True),
                          author_name=cs.author,
                          description=''.join(desc_msg))

        response.content_type = feed.mime_type
        return feed.writeString('utf-8')

    def rss(self, repo_name):
        """Produce an rss2 feed via feedgenerator module"""
        feed = Rss201rev2Feed(
            title=self.title % repo_name,
            link=url('summary_home', repo_name=repo_name,
                     qualified=True),
            description=self.description % repo_name,
            language=self.language,
            ttl=self.ttl
        )

        for cs in reversed(list(c.rhodecode_repo[-self.feed_nr:])):
            desc_msg = []
            desc_msg.append('%s - %s<br/><pre>' % (cs.author, cs.date))
            desc_msg.append(self.__changes(cs))

            feed.add_item(title=self._get_title(cs),
                          link=url('changeset_home', repo_name=repo_name,
                                   revision=cs.raw_id, qualified=True),
                          author_name=cs.author,
                          description=''.join(desc_msg),
                         )

        response.content_type = feed.mime_type
        return feed.writeString('utf-8')