"""The base Controller API

Provides the BaseController class for subclassing.

"""

import logging

from pylons import config, tmpl_context as c, request, session, url

from pylons.controllers import WSGIController

from pylons.controllers.util import redirect

from pylons.templating import render_mako as render

from rhodecode import __version__

from rhodecode.lib.auth import AuthUser

from rhodecode.lib.utils import get_repo_slug

from rhodecode.model import meta

from rhodecode.model.scm import ScmModel

from rhodecode import BACKENDS

from rhodecode.model.db import Repository

log = logging.getLogger(__name__)

class BaseController(WSGIController):

    def __before__(self):

        c.rhodecode_version = __version__

        c.rhodecode_name = config.get('rhodecode_title')

        c.ga_code = config.get('rhodecode_ga_code')

        c.repo_name = get_repo_slug(request)

        c.backends = BACKENDS.keys()

        self.cut_off_limit = int(config.get('cut_off_limit'))

        self.sa = meta.Session()

        self.scm_model = ScmModel(self.sa)

        #c.unread_journal = scm_model.get_unread_journal()

    def __call__(self, environ, start_response):

        """Invoke the Controller"""

        # WSGIController.__call__ dispatches to the Controller method

        # the request is routed to. This routing information is

        # available in environ['pylons.routes_dict']

        try:

            # putting this here makes sure that we update permissions each time

            api_key = request.GET.get('api_key')

            user_id = getattr(session.get('rhodecode_user'), 'user_id', None)

            self.rhodecode_user = c.rhodecode_user = AuthUser(user_id, api_key)

            self.rhodecode_user.set_authenticated(

                                        getattr(session.get('rhodecode_user'),

                                       'is_authenticated', False))

            session['rhodecode_user'] = self.rhodecode_user

            session.save()

            return WSGIController.__call__(self, environ, start_response)

        finally:

            meta.Session.remove()

class BaseRepoController(BaseController):

    """

    Base class for controllers responsible for loading all needed data

    for those controllers, loaded items are

    c.rhodecode_repo: instance of scm repository (taken from cache)

    """

    def __before__(self):

        super(BaseRepoController, self).__before__()

        if c.repo_name:

            c.rhodecode_db_repo = Repository.get_by_repo_name(c.repo_name)

            c.rhodecode_repo = c.rhodecode_db_repo.scm_instance

            if c.rhodecode_repo is None:

                log.error('%s this repository is present in database but it '

                          'cannot be created as an scm instance', c.repo_name)

                redirect(url('home'))