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

    Summary controller for Rhodecode

    :created_on: Apr 18, 2010
    :author: marcink
    :copyright: (C) 2009-2011 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 calendar
import logging
from time import mktime
from datetime import datetime, timedelta, date

from vcs.exceptions import ChangesetError

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

from rhodecode.model.db import Statistics, Repository
from rhodecode.model.repo import RepoModel

from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
from rhodecode.lib.base import BaseRepoController, render
from rhodecode.lib.utils import EmptyChangeset
from rhodecode.lib.odict import OrderedDict

from rhodecode.lib.celerylib import run_task
from rhodecode.lib.celerylib.tasks import get_commits_stats, \
    LANGUAGES_EXTENSIONS_MAP
from rhodecode.lib.helpers import RepoPage

try:
    import json
except ImportError:
    #python 2.5 compatibility
    import simplejson as json
    
log = logging.getLogger(__name__)


class SummaryController(BaseRepoController):

    @LoginRequired()
    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                   'repository.admin')
    def __before__(self):
        super(SummaryController, self).__before__()

    def index(self, repo_name):

        e = request.environ
        c.dbrepo = dbrepo = c.rhodecode_db_repo

        c.following = self.scm_model.is_following_repo(repo_name,
                                                self.rhodecode_user.user_id)

        def url_generator(**kw):
            return url('shortlog_home', repo_name=repo_name, size=10, **kw)

        c.repo_changesets = RepoPage(c.rhodecode_repo, page=1,
                                     items_per_page=10, url=url_generator)

        if self.rhodecode_user.username == 'default':
            #for default(anonymous) user we don't need to pass credentials
            username = ''
            password = ''
        else:
            username = str(self.rhodecode_user.username)
            password = '@'

        if e.get('wsgi.url_scheme') == 'https':
            split_s = 'https://'
        else:
            split_s = 'http://'

        qualified_uri = [split_s] + [url.current(qualified=True)\
                                     .split(split_s)[-1]]
        uri = u'%(proto)s%(user)s%(pass)s%(rest)s' \
                % {'user': username,
                     'pass': password,
                     'proto': qualified_uri[0],
                     'rest': qualified_uri[1]}
        c.clone_repo_url = uri
        c.repo_tags = OrderedDict()
        for name, hash in c.rhodecode_repo.tags.items()[:10]:
            try:
                c.repo_tags[name] = c.rhodecode_repo.get_changeset(hash)
            except ChangesetError:
                c.repo_tags[name] = EmptyChangeset(hash)

        c.repo_branches = OrderedDict()
        for name, hash in c.rhodecode_repo.branches.items()[:10]:
            try:
                c.repo_branches[name] = c.rhodecode_repo.get_changeset(hash)
            except ChangesetError:
                c.repo_branches[name] = EmptyChangeset(hash)

        td = date.today() + timedelta(days=1)
        td_1m = td - timedelta(days=calendar.mdays[td.month])
        td_1y = td - timedelta(days=365)

        ts_min_m = mktime(td_1m.timetuple())
        ts_min_y = mktime(td_1y.timetuple())
        ts_max_y = mktime(td.timetuple())

        if dbrepo.enable_statistics:
            c.no_data_msg = _('No data loaded yet')
            run_task(get_commits_stats, c.dbrepo.repo_name, ts_min_y, ts_max_y)
        else:
            c.no_data_msg = _('Statistics are disabled for this repository')
        c.ts_min = ts_min_m
        c.ts_max = ts_max_y

        stats = self.sa.query(Statistics)\
            .filter(Statistics.repository == dbrepo)\
            .scalar()

        c.stats_percentage = 0

        if stats and stats.languages:
            c.no_data = False is dbrepo.enable_statistics
            lang_stats_d = json.loads(stats.languages)
            c.commit_data = stats.commit_activity
            c.overview_data = stats.commit_activity_combined
            
            lang_stats = ((x, {"count": y,
                               "desc": LANGUAGES_EXTENSIONS_MAP.get(x)})
                          for x, y in lang_stats_d.items())

            c.trending_languages = json.dumps(OrderedDict(
                                       sorted(lang_stats, reverse=True,
                                            key=lambda k: k[1])[:10]
                                        )
                                    )
            last_rev = stats.stat_on_revision
            c.repo_last_rev = c.rhodecode_repo.count() - 1 \
                if c.rhodecode_repo.revisions else 0
            if last_rev == 0 or c.repo_last_rev == 0:
                pass
            else:
                c.stats_percentage = '%.2f' % ((float((last_rev)) /
                                                c.repo_last_rev) * 100)
        else:
            c.commit_data = json.dumps({})
            c.overview_data = json.dumps([[ts_min_y, 0], [ts_max_y, 10]])
            c.trending_languages = json.dumps({})
            c.no_data = True
            
        c.enable_downloads = dbrepo.enable_downloads
        if c.enable_downloads:
            c.download_options = self._get_download_links(c.rhodecode_repo)

        return render('summary/summary.html')

    def _get_download_links(self, repo):

        download_l = []

        branches_group = ([], _("Branches"))
        tags_group = ([], _("Tags"))

        for name, chs in c.rhodecode_repo.branches.items():
            #chs = chs.split(':')[-1]
            branches_group[0].append((chs, name),)
        download_l.append(branches_group)

        for name, chs in c.rhodecode_repo.tags.items():
            #chs = chs.split(':')[-1]
            tags_group[0].append((chs, name),)
        download_l.append(tags_group)

        return download_l