#!/usr/bin/env python
# encoding: utf-8
# summary controller for pylons
# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
# 
# 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; version 2
# of the License or (at your opinion) any later version of the license.
# 
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA  02110-1301, USA.
"""
Created on April 18, 2010
summary controller for pylons
@author: marcink
"""
from pylons import tmpl_context as c, request, url
from vcs.exceptions import ChangesetError
from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
from rhodecode.lib.base import BaseController, render
from rhodecode.lib.utils import OrderedDict, EmptyChangeset
from rhodecode.model.scm import ScmModel
from rhodecode.model.db import Statistics
from webhelpers.paginate import Page
from rhodecode.lib.celerylib import run_task
from rhodecode.lib.celerylib.tasks import get_commits_stats
from datetime import datetime, timedelta
from time import mktime
import calendar
import logging
try:
    import json
except ImportError:
    #python 2.5 compatibility
    import simplejson as json
log = logging.getLogger(__name__)

class SummaryController(BaseController):

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

    def index(self):
        hg_model = ScmModel()
        c.repo_info = hg_model.get_repo(c.repo_name)
        def url_generator(**kw):
            return url('shortlog_home', repo_name=c.repo_name, **kw)

        c.repo_changesets = Page(c.repo_info, page=1, items_per_page=10,
                                 url=url_generator)

        e = request.environ

        if self.rhodecode_user.username == 'default':
            password = ':default'
        else:
            password = ''

        uri = u'%(protocol)s://%(user)s%(password)s@%(host)s%(prefix)s/%(repo_name)s' % {
                                        'protocol': e.get('wsgi.url_scheme'),
                                        'user':str(c.rhodecode_user.username),
                                        'password':password,
                                        'host':e.get('HTTP_HOST'),
                                        'prefix':e.get('SCRIPT_NAME'),
                                        'repo_name':c.repo_name, }
        c.clone_repo_url = uri
        c.repo_tags = OrderedDict()
        for name, hash in c.repo_info.tags.items()[:10]:
            try:
                c.repo_tags[name] = c.repo_info.get_changeset(hash)
            except ChangesetError:
                c.repo_tags[name] = EmptyChangeset(hash)

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

        td = datetime.today() + timedelta(days=1)
        y, m, d = td.year, td.month, td.day

        ts_min_y = mktime((y - 1, (td - timedelta(days=calendar.mdays[m])).month,
                            d, 0, 0, 0, 0, 0, 0,))
        ts_min_m = mktime((y, (td - timedelta(days=calendar.mdays[m])).month,
                            d, 0, 0, 0, 0, 0, 0,))

        ts_max_y = mktime((y, m, d, 0, 0, 0, 0, 0, 0,))

        run_task(get_commits_stats, c.repo_info.name, ts_min_y, ts_max_y)
        c.ts_min = ts_min_m
        c.ts_max = ts_max_y

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


        if stats and stats.languages:
            lang_stats = json.loads(stats.languages)
            c.commit_data = stats.commit_activity
            c.overview_data = stats.commit_activity_combined
            c.trending_languages = json.dumps(OrderedDict(
                                       sorted(lang_stats.items(), reverse=True,
                                            key=lambda k: k[1])[:2]
                                        )
                                    )
        else:
            c.commit_data = json.dumps({})
            c.overview_data = json.dumps([[ts_min_y, 0], [ts_max_y, 0] ])
            c.trending_languages = json.dumps({})

        return render('summary/summary.html')