# MediaGoblin for LibrePlanet
# Copyright (C) 2015 David Thompson <davet@gnu.org>
#
# 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/>.

import logging
import os

from mediagoblin import mg_globals
from mediagoblin.tools.pluginapi import get_config, register_template_path, register_routes, register_template_hooks
from mediagoblin.db.models import MediaEntry
from mediagoblin.db.util import media_entries_for_tag_slug
from mediagoblin.tools.pagination import Pagination
from mediagoblin.tools.response import render_to_response
from mediagoblin.tools.licenses import SORTED_LICENSES, SUPPORTED_LICENSES, License
from mediagoblin.decorators import uses_pagination, user_not_banned

# Add three CC BY non-NC 4.0 to licenses
cc_by_4 = License("CC BY 4.0",
                     "Creative Commons Attribution 4.0 International",
                     "https://creativecommons.org/licenses/by/4.0/")
cc_by_sa_4 = License("CC BY-SA 4.0",
                     "Creative Commons Attribution-ShareAlike 4.0 International",
                     "https://creativecommons.org/licenses/by-sa/4.0/")
cc_by_nd_4 = License("CC BY-ND 4.0",
                     "Creative Commons Attribution-NoDerivatives 4.0 International",
                     "https://creativecommons.org/licenses/by-nd/4.0/")
gfdl_1_3 = License("GFDL 1.3",
                     "GNU Free Documentation License 1.3",
                     "https://www.gnu.org/licenses/fdl-1.3.en.html")
SORTED_LICENSES.insert(1, cc_by_4)
SORTED_LICENSES.insert(2, cc_by_sa_4)
SORTED_LICENSES.insert(3, cc_by_nd_4)
SORTED_LICENSES.insert(4, gfdl_1_3)
SUPPORTED_LICENSES[cc_by_4.uri] = cc_by_4
SUPPORTED_LICENSES[cc_by_sa_4.uri] = cc_by_sa_4
SUPPORTED_LICENSES[cc_by_nd_4.uri] = cc_by_nd_4
SUPPORTED_LICENSES[gfdl_1_3.uri] = gfdl_1_3

PLUGIN_DIR = os.path.dirname(__file__)

MAX_HOME_ITEMS_DEFAULT = 10

MAX_HOME_ALL_VIDEO_ITEMS = 10
MAX_HOME_ALL_PHOTO_ITEMS = 20
MAX_HOME_FEATURED_ITEMS = 10
MAX_HOME_LP_ITEMS = 10

# make tags lowercase and use dashes in place of spaces.
# uppercase tags will be included by the lowercase form.
FEATURED_TAG = "featured"


_log = logging.getLogger(__name__)

# This is the function that gets called when the setup
# hook fires.
def setup_plugin():
    _log.info("Setting up Libreplanet...")

    # Register the template path.
    register_template_path(os.path.join(PLUGIN_DIR, 'templates'))

def lp_media_for_type(db, type, tag=None, max_items=MAX_HOME_ITEMS_DEFAULT):
    if (tag == None):
        cursor = MediaEntry.query
    else:
        cursor = media_entries_for_tag_slug(db, tag)

    return cursor.\
        filter((MediaEntry.media_type == type)
               & (MediaEntry.state == u'processed')).\
        order_by(MediaEntry.created.desc()).\
        limit(max_items)

@user_not_banned
def frontpage_view(request):
    images          = lp_media_for_type(request.db, u'mediagoblin.media_types.image', None, MAX_HOME_ALL_PHOTO_ITEMS)
    videos          = lp_media_for_type(request.db, u'mediagoblin.media_types.video', None, MAX_HOME_ALL_VIDEO_ITEMS)

    lp2017_keynotes = lp_media_for_type(request.db, u'mediagoblin.media_types.video', "libreplanet-2017-keynote", MAX_HOME_LP_ITEMS)
    lp2017_videos   = lp_media_for_type(request.db, u'mediagoblin.media_types.video', "libreplanet-2017-video", MAX_HOME_LP_ITEMS)

    lp2016_videos   = lp_media_for_type(request.db, u'mediagoblin.media_types.video', "libreplanet-2016-video", MAX_HOME_LP_ITEMS)

    featured_images = lp_media_for_type(request.db, u'mediagoblin.media_types.image', FEATURED_TAG, MAX_HOME_FEATURED_ITEMS)
    featured_videos = lp_media_for_type(request.db, u'mediagoblin.media_types.video', FEATURED_TAG, MAX_HOME_FEATURED_ITEMS)

    return render_to_response(
        request, 'libreplanet/root.html',
        {'images': images,
         'videos': videos,
         'lp2017_keynotes': lp2017_keynotes,
         'lp2017_videos': lp2017_videos,
         'lp2016_videos': lp2016_videos,
         'featured_images': featured_images,
         'featured_videos': featured_videos,
         'allow_registration': mg_globals.app_config["allow_registration"]})

def frontpage_view_hook():
    return frontpage_view

register_routes([('all-videos', '/videos',
                  'mediagoblin.plugins.libreplanet.views:video_listing'),
                 ('all-photos', '/photos',
                  'mediagoblin.plugins.libreplanet.views:image_listing'),

                 ('featured-videos', '/videos/featured',
                  'mediagoblin.plugins.libreplanet.views:featured_video_listing'),
                 ('featured-photos', '/photos/featured',
                  'mediagoblin.plugins.libreplanet.views:featured_image_listing')
             ])

# This is a dict that specifies which hooks this plugin uses.
# This one only uses one hook: setup.
hooks = {
    'setup': setup_plugin,
    'frontpage_view': frontpage_view_hook
}

register_template_hooks(
    {'header_left':  "libreplanet/banner.html",
     'header_extra': "libreplanet/join.html"}
)