# This file is part of Sick Beard.
#
# Sick Beard 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, either version 3 of the License, or
# (at your option) any later version.
#
# Sick Beard 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 Sick Beard.  If not, see <http://www.gnu.org/licenses/>.

import datetime
import urllib
import generic
import sickbeard

from sickbeard import classes
from sickbeard import logger, tvcache, exceptions
from sickbeard import helpers
from sickbeard.common import Quality
from sickbeard.exceptions import ex, AuthException
from sickbeard.name_parser.parser import NameParser, InvalidNameException

try:
    import json
except ImportError:
    from lib import simplejson as json


class HDBitsProvider(generic.TorrentProvider):

    def __init__(self):

        generic.TorrentProvider.__init__(self, "HDBits")

        self.supportsBacklog = True

        self.cache = HDBitsCache(self)

        self.url = 'https://hdbits.org'
        self.search_url = 'https://hdbits.org/api/torrents'
        self.rss_url = 'https://hdbits.org/api/torrents'
        self.download_url = 'http://hdbits.org/download.php?'

    def isEnabled(self):
        return sickbeard.HDBITS

    def _checkAuth(self):

        if not sickbeard.HDBITS_USERNAME  or not sickbeard.HDBITS_PASSKEY:
            raise AuthException("Your authentication credentials for " + self.name + " are missing, check your config.")

        return True

    def _checkAuthFromData(self, parsedJSON):

        if parsedJSON is None:
            return self._checkAuth()

        if 'status' in parsedJSON and 'message' in parsedJSON:
            if parsedJSON.get('status') == 5:
                logger.log(u"Incorrect authentication credentials for " + self.name + " : " + parsedJSON['message'], logger.DEBUG)
                raise AuthException("Your authentication credentials for " + self.name + " are incorrect, check your config.")

        return True

    def _get_season_search_strings(self, show, season):
        season_search_string = [self._make_post_data_JSON(show=show, season=season)]
        return season_search_string

    def _get_episode_search_strings(self, episode):
        episode_search_string = [self._make_post_data_JSON(show=episode.show, episode=episode)]
        return episode_search_string

    def _get_title_and_url(self, item):

        title = item['name']
        if title:
            title = title.replace(' ', '.')

        url = self.download_url + urllib.urlencode({'id': item['id'], 'passkey': sickbeard.HDBITS_PASSKEY})

        return (title, url)

    def _doSearch(self, search_params, show=None):

        self._checkAuth()

        logger.log(u"Search url: " + self.search_url + " search_params: " + search_params, logger.DEBUG)

        data = self.getURL(self.search_url, post_data=search_params)

        if not data:
            logger.log(u"No data returned from " + self.search_url, logger.ERROR)
            return []

        parsedJSON = helpers.parse_json(data)

        if parsedJSON is None:
            logger.log(u"Error trying to load " + self.name + " JSON data", logger.ERROR)
            return []

        if self._checkAuthFromData(parsedJSON):
            results = []

            if parsedJSON and 'data' in parsedJSON:
                items = parsedJSON['data']
            else:
                logger.log(u"Resulting JSON from " + self.name + " isn't correct, not parsing it", logger.ERROR)
                items = []

            for item in items:
                results.append(item)

        return results

    def findPropers(self, search_date=None):
        results = []

        search_terms = [' proper ', ' repack ']

        for term in search_terms:
            for item in self._doSearch(self._make_post_data_JSON(search_term=term)):
                if item['utadded']:
                    try:
                        result_date = datetime.datetime.fromtimestamp(int(item['utadded']))
                    except:
                        result_date = None

                    if result_date:
                        if not search_date or result_date > search_date:
                            title, url = self._get_title_and_url(item)
                            results.append(classes.Proper(title, url, result_date))

        return results

    def _make_post_data_JSON(self, show=None, episode=None, season=None, search_term=None):

        post_data = {
            'username': sickbeard.HDBITS_USERNAME,
            'passkey': sickbeard.HDBITS_PASSKEY,
            'category': [2],  # TV Category
        }

        if episode:
            post_data['tvdb'] = {
                'id': show.tvdbid,
                'season': episode.season,
                'episode': episode.episode
            }

        if season:
            post_data['tvdb'] = {
                'id': show.tvdbid,
                'season': season,
            }

        if search_term:
            post_data['search'] = search_term

        return json.dumps(post_data)


class HDBitsCache(tvcache.TVCache):

    def __init__(self, provider):

        tvcache.TVCache.__init__(self, provider)

        # only poll HDBits every 15 minutes max
        self.minTime = 15

    def updateCache(self):

        if not self.shouldUpdate():
            return

        if self._checkAuth(None):

            data = self._getRSSData()

            # As long as we got something from the provider we count it as an update
            if data:
                self.setLastUpdate()
            else:
                return []

            logger.log(u"Clearing " + self.provider.name + " cache and updating with new information")
            self._clearCache()

            parsedJSON = helpers.parse_json(data)

            if parsedJSON is None:
                logger.log(u"Error trying to load " + self.provider.name + " JSON feed", logger.ERROR)
                return []

            if self._checkAuth(parsedJSON):
                if parsedJSON and 'data' in parsedJSON:
                    items = parsedJSON['data']
                else:
                    logger.log(u"Resulting JSON from " + self.provider.name + " isn't correct, not parsing it", logger.ERROR)
                    return []

                for item in items:
                    self._parseItem(item)

            else:
                raise exceptions.AuthException("Your authentication info for " + self.provider.name + " is incorrect, check your config")

        else:
            return []

    def _getRSSData(self):
        return self.provider.getURL(self.provider.rss_url, post_data=self.provider._make_post_data_JSON())

    def _parseItem(self, item):

        (title, url) = self.provider._get_title_and_url(item)

        if title and url:
            logger.log(u"Adding item to results: " + title, logger.DEBUG)
            self._addCacheEntry(title, url)
        else:
            logger.log(u"The data returned from the " + self.provider.name + " is incomplete, this result is unusable", logger.ERROR)
            return

    def _checkAuth(self, data):
        return self.provider._checkAuthFromData(data)

provider = HDBitsProvider()
