# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011 Free Software Foundation, Inc
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


from webob import exc

from mediagoblin.util import render_to_response, redirect
from mediagoblin.edit import forms
from mediagoblin.edit.lib import may_edit_media
from mediagoblin.decorators import require_active_login, get_user_media_entry


@get_user_media_entry
@require_active_login
def edit_media(request, media):
    if not may_edit_media(request, media):
        return exc.HTTPForbidden()

    form = forms.EditForm(request.POST,
        title = media['title'],
        slug = media['slug'],
        description = media['description'])

    if request.method == 'POST' and form.validate():
        # Make sure there isn't already a MediaEntry with such a slug
        # and userid.
        existing_user_slug_entries = request.db.MediaEntry.find(
            {'slug': request.POST['slug'],
             'uploader': media['uploader'],
             '_id': {'$ne': media['_id']}}).count()
        
        if existing_user_slug_entries:
            form.slug.errors.append(
                u'An entry with that slug already exists for this user.')
        else:
            media['title'] = request.POST['title']
            media['description'] = request.POST['description']
            media['slug'] = request.POST['slug']
            media.save()

            return redirect(request, "mediagoblin.user_pages.media_home",
                user=media.uploader()['username'], media=media['slug'])

    return render_to_response(
        request,
        'mediagoblin/edit/edit.html',
        {'media': media,
         'form': form})