# 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 tmpl_context as c, request, url

from pylons.i18n.translation import _

from rhodecode.lib import helpers as h

from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator

from rhodecode.lib.base import BaseRepoController, render

from rhodecode.lib.helpers import RepoPage

from pylons.controllers.util import redirect

from rhodecode.lib.utils2 import safe_int

from rhodecode.lib.vcs.exceptions import NodeDoesNotExistError, ChangesetError,\

    RepositoryError

log = logging.getLogger(__name__)

class ShortlogController(BaseRepoController):

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def __before__(self):

        super(ShortlogController, self).__before__()

    def __get_cs_or_redirect(self, rev, repo_name, redirect_after=True):

        """

        Safe way to get changeset if error occur it redirects to tip with

        proper message

        :param rev: revision to fetch

        :param repo_name: repo name to redirect after

        """

        try:

            return c.rhodecode_repo.get_changeset(rev)

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('shortlog_home', repo_name=repo_name))

    def index(self, repo_name, revision=None, f_path=None):

        p = safe_int(request.params.get('page', 1), 1)

        size = safe_int(request.params.get('size', 20), 20)

        def url_generator(**kw):

            return url('shortlog_home', repo_name=repo_name, size=size, **kw)

        if f_path:

            # get the history for the file !

            tip_cs = c.rhodecode_repo.get_changeset()

            try:

                collection = tip_cs.get_file_history(f_path)

            except (NodeDoesNotExistError, ChangesetError):

                #this node is not present at tip !

                try:

                    cs = self.__get_cs_or_redirect(revision, repo_name)

                    collection = cs.get_file_history(f_path)

                except RepositoryError, e:

                    h.flash(str(e), category='warning')

                    redirect(h.url('shortlog_home', repo_name=repo_name))

            collection = list(reversed(collection))

        c.repo_changesets = RepoPage(collection, page=p,

                                    items_per_page=size, url=url_generator)

        page_revisions = [x.raw_id for x in list(collection)]

        c.statuses = c.rhodecode_db_repo.statuses(page_revisions)

        if not c.repo_changesets:

            h.flash(_('There are no changesets yet'), category='warning')

            return redirect(url('summary_home', repo_name=repo_name))

        c.shortlog_data = render('shortlog/shortlog_data.html')

        if request.environ.get('HTTP_X_PARTIAL_XHR'):

            return c.shortlog_data

        r = render('shortlog/shortlog.html')

        return r