# Author: seedboy
# URL: https://github.com/seedboy
#
# This file is part of SickRage.
#
# SickRage 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.
#
# SickRage 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 SickRage.  If not, see <http://www.gnu.org/licenses/>.

import traceback
import urllib2
import urllib
import time
import re
import datetime
import urlparse
import sickbeard
import generic
from sickbeard.common import Quality, cpu_presets
from sickbeard import logger
from sickbeard import tvcache
from sickbeard import db
from sickbeard import classes
from sickbeard import helpers
from sickbeard import show_name_helpers
from sickbeard.common import Overview
from sickbeard.exceptions import ex
from sickbeard import clients
from lib import requests
from lib.requests import exceptions
from sickbeard.bs4_parser import BS4Parser
from sickbeard.helpers import sanitizeSceneName


class NextGenProvider(generic.TorrentProvider):
    urls = {'base_url': 'https://nxtgn.org/',
            'search': 'https://nxtgn.org/browse.php?search=%s&cat=0&incldead=0&modes=%s',
            'login_page': 'https://nxtgn.org/login.php',
            'detail': 'https://nxtgn.org/details.php?id=%s',
            'download': 'https://nxtgn.org/download.php?id=%s',
            'takelogin': 'https://nxtgn.org/takelogin.php?csrf=',
    }

    def __init__(self):

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

        self.supportsBacklog = True

        self.enabled = False
        self.username = None
        self.password = None
        self.ratio = None

        self.cache = NextGenCache(self)

        self.url = self.urls['base_url']

        self.categories = '&c7=1&c24=1&c17=1&c22=1&c42=1&c46=1&c26=1&c28=1&c43=1&c4=1&c31=1&c45=1&c33=1'

        self.last_login_check = None

        self.login_opener = None

    def isEnabled(self):
        return self.enabled

    def imageName(self):
        return 'nextgen.png'

    def getQuality(self, item, anime=False):

        quality = Quality.sceneQuality(item[0], anime)
        return quality

    def getLoginParams(self):
        return {
            'username': self.username,
            'password': self.password,
        }

    def loginSuccess(self, output):
        if "<title>NextGen - Login</title>" in output:
            return False
        else:
            return True

    def _doLogin(self):

        now = time.time()

        if self.login_opener and self.last_login_check < (now - 3600):
            try:
                output = self.login_opener.open(self.urls['test'])
                if self.loginSuccess(output):
                    self.last_login_check = now
                    return True
                else:
                    self.login_opener = None
            except:
                self.login_opener = None

        if self.login_opener:
            return True

        try:
            login_params = self.getLoginParams()
            self.session = requests.Session()
            self.session.headers.update(
                {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20130519 Firefox/24.0)'})
            data = self.session.get(self.urls['login_page'], verify=False)
            with BS4Parser(data.content.decode('iso-8859-1')) as bs:
                csrfraw = bs.find('form', attrs={'id': 'login'})['action']
                output = self.session.post(self.urls['base_url'] + csrfraw, data=login_params)

                if self.loginSuccess(output):
                    self.last_login_check = now
                    self.login_opener = self.session
                    return True

                error = 'unknown'
        except:
            error = traceback.format_exc()
            self.login_opener = None

        self.login_opener = None
        logger.log(u'Failed to login:' + str(error), logger.ERROR)
        return False

    def _get_season_search_strings(self, ep_obj):

        search_string = {'Season': []}
        for show_name in set(show_name_helpers.allPossibleShowNames(self.show)):
            if ep_obj.show.air_by_date or ep_obj.show.sports:
                ep_string = show_name + ' ' + str(ep_obj.airdate).split('-')[0]
            elif ep_obj.show.anime:
                ep_string = show_name + ' ' + "%d" % ep_obj.scene_absolute_number
            else:
                ep_string = show_name + ' S%02d' % int(ep_obj.scene_season)  #1) showName SXX

            search_string['Season'].append(ep_string)

        return [search_string]

    def _get_episode_search_strings(self, ep_obj, add_string=''):

        search_string = {'Episode': []}

        if not ep_obj:
            return []

        if self.show.air_by_date:
            for show_name in set(show_name_helpers.allPossibleShowNames(self.show)):
                ep_string = sanitizeSceneName(show_name) + ' ' + \
                            str(ep_obj.airdate).replace('-', '|')
                search_string['Episode'].append(ep_string)
        elif self.show.sports:
            for show_name in set(show_name_helpers.allPossibleShowNames(self.show)):
                ep_string = sanitizeSceneName(show_name) + ' ' + \
                            str(ep_obj.airdate).replace('-', '|') + '|' + \
                            ep_obj.airdate.strftime('%b')
                search_string['Episode'].append(ep_string)
        elif self.show.anime:
            for show_name in set(show_name_helpers.allPossibleShowNames(self.show)):
                ep_string = sanitizeSceneName(show_name) + ' ' + \
                            "%i" % int(ep_obj.scene_absolute_number)
                search_string['Episode'].append(ep_string)
        else:
            for show_name in set(show_name_helpers.allPossibleShowNames(self.show)):
                ep_string = show_name_helpers.sanitizeSceneName(show_name) + ' ' + \
                            sickbeard.config.naming_ep_type[2] % {'seasonnumber': ep_obj.scene_season,
                                                                  'episodenumber': ep_obj.scene_episode} + ' %s' % add_string

                search_string['Episode'].append(re.sub('\s+', ' ', ep_string))

        return [search_string]

    def _doSearch(self, search_params, search_mode='eponly', epcount=0, age=0):

        results = []
        items = {'Season': [], 'Episode': [], 'RSS': []}

        if not self._doLogin():
            return results

        for mode in search_params.keys():

            for search_string in search_params[mode]:

                searchURL = self.urls['search'] % (search_string, self.categories)
                logger.log(u"" + self.name + " search page URL: " + searchURL, logger.DEBUG)

                data = self.getURL(searchURL)
                if not data:
                    continue

                try:
                    with BS4Parser(data.decode('iso-8859-1'), features=["html5lib", "permissive"]) as html:
                        resultsTable = html.find('div', attrs={'id': 'torrent-table-wrapper'})

                        if not resultsTable:
                            logger.log(u"The Data returned from " + self.name + " do not contains any torrent",
                                       logger.DEBUG)
                            continue

                        # Collecting entries
                        entries_std = html.find_all('div', attrs={'id': 'torrent-std'})
                        entries_sticky = html.find_all('div', attrs={'id': 'torrent-sticky'})

                        entries = entries_std + entries_sticky

                        #Xirg STANDARD TORRENTS
                        #Continue only if one Release is found
                        if len(entries) > 0:

                            for result in entries:

                                try:
                                    torrentName = \
                                    ((result.find('div', attrs={'id': 'torrent-udgivelse2-users'})).find('a'))['title']
                                    torrentId = (
                                    ((result.find('div', attrs={'id': 'torrent-download'})).find('a'))['href']).replace(
                                        'download.php?id=', '')
                                    torrent_name = str(torrentName)
                                    torrent_download_url = (self.urls['download'] % torrentId).encode('utf8')
                                    torrent_details_url = (self.urls['detail'] % torrentId).encode('utf8')
                                    #torrent_seeders = int(result.find('div', attrs = {'id' : 'torrent-seeders'}).find('a')['class'][0])
                                    ## Not used, perhaps in the future ##
                                    #torrent_id = int(torrent['href'].replace('/details.php?id=', ''))
                                    #torrent_leechers = int(result.find('td', attrs = {'class' : 'ac t_leechers'}).string)
                                except (AttributeError, TypeError):
                                    continue

                                # Filter unseeded torrent and torrents with no name/url
                                #if mode != 'RSS' and torrent_seeders == 0:
                                #    continue

                                if not torrent_name or not torrent_download_url:
                                    continue

                                item = torrent_name, torrent_download_url
                                logger.log(u"Found result: " + torrent_name + " (" + torrent_details_url + ")",
                                           logger.DEBUG)
                                items[mode].append(item)

                        else:
                            logger.log(u"The Data returned from " + self.name + " do not contains any torrent",
                                       logger.WARNING)
                            continue

                except Exception, e:
                    logger.log(u"Failed parsing " + self.name + " Traceback: " + traceback.format_exc(),
                               logger.ERROR)

            results += items[mode]

        return results

    def _get_title_and_url(self, item):

        title, url = item

        if title:
            title = u'' + title
            title = title.replace(' ', '.')

        if url:
            url = str(url).replace('&amp;', '&')

        return title, url

    def findPropers(self, search_date=datetime.datetime.today()):

        results = []

        myDB = db.DBConnection()
        sqlResults = myDB.select(
            'SELECT s.show_name, e.showid, e.season, e.episode, e.status, e.airdate FROM tv_episodes AS e' +
            ' INNER JOIN tv_shows AS s ON (e.showid = s.indexer_id)' +
            ' WHERE e.airdate >= ' + str(search_date.toordinal()) +
            ' AND (e.status IN (' + ','.join([str(x) for x in Quality.DOWNLOADED]) + ')' +
            ' OR (e.status IN (' + ','.join([str(x) for x in Quality.SNATCHED]) + ')))'
        )

        if not sqlResults:
            return []

        for sqlshow in sqlResults:
            self.show = helpers.findCertainShow(sickbeard.showList, int(sqlshow["showid"]))
            if self.show:
                curEp = self.show.getEpisode(int(sqlshow["season"]), int(sqlshow["episode"]))
                searchString = self._get_episode_search_strings(curEp, add_string='PROPER|REPACK')

                for item in self._doSearch(searchString[0]):
                    title, url = self._get_title_and_url(item)
                    results.append(classes.Proper(title, url, datetime.datetime.today(), self.show))

        return results

    def seedRatio(self):
        return self.ratio


class NextGenCache(tvcache.TVCache):
    def __init__(self, provider):

        tvcache.TVCache.__init__(self, provider)

        # Only poll NextGen every 10 minutes max
        self.minTime = 10

    def _getRSSData(self):
        search_params = {'RSS': ['']}
        return {'entries': self.provider._doSearch(search_params)}


provider = NextGenProvider()