# Author: seedboy
# URL: https://github.com/seedboy
#
# 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 re
import traceback
import datetime
import urlparse
import sickbeard
import generic
from sickbeard.common import Quality
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 bs4 import BeautifulSoup
from lib.unidecode import unidecode


class IPTorrentsProvider(generic.TorrentProvider):
    urls = {'base_url': 'https://www.iptorrents.com',
            'login': 'https://www.iptorrents.com/torrents/',
            'search': 'https://www.iptorrents.com/torrents/?%s%s&q=%s&qf=ti',
    }

    def __init__(self):

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

        self.supportsBacklog = True

        self.cache = IPTorrentsCache(self)

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

        self.session = None

        self.categorie = 'l73=1&l78=1&l66=1&l65=1&l79=1&l5=1&l4=1'

    def isEnabled(self):
        return sickbeard.IPTORRENTS

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

    def getQuality(self, item):

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

    def _doLogin(self):

        login_params = {'username': sickbeard.IPTORRENTS_USERNAME,
                        'password': sickbeard.IPTORRENTS_PASSWORD,
                        'login': 'submit',
        }

        self.session = requests.Session()

        try:
            response = self.session.post(self.urls['login'], data=login_params, timeout=30)
        except (requests.exceptions.ConnectionError, requests.exceptions.HTTPError), e:
            logger.log(u'Unable to connect to ' + self.name + ' provider: ' + ex(e), logger.ERROR)
            return False

        if re.search('tries left', response.text) \
                or re.search('<title>IPT</title>', response.text) \
                or response.status_code == 401:
            logger.log(u'Invalid username or password for ' + self.name + ', Check your settings!', logger.ERROR)
            return False

        return True

    def _get_season_search_strings(self, show, season, wantedEp, searchSeason=False):
        search_string = {'Episode': []}

        if not show:
            return []

        self.show = show

        if searchSeason:
            search_string = {'Season': [], 'Episode': []}
            for show_name in set(show_name_helpers.allPossibleShowNames(show)):
                ep_string = show_name + ' S%02d' % int(season)  #1) ShowName SXX
                search_string['Season'].append(ep_string)

        for ep_obj in wantedEp:
            search_string['Episode'] += self._get_episode_search_strings(ep_obj)[0]['Episode']

        if not search_string['Episode']:
            return []

        return [search_string]

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

        search_string = {'Episode': []}

        if not ep_obj:
            return []

        if ep_obj.show.air_by_date:
            for show_name in set(show_name_helpers.allPossibleShowNames(ep_obj.show)):
                ep_string = show_name_helpers.sanitizeSceneName(show_name) + ' ' + \
                            str(ep_obj.airdate) + '|' + \
                            helpers.custom_strftime('%Y %b {S}', ep_obj.airdate)
                search_string['Episode'].append(ep_string)
        else:
            for show_name in set(show_name_helpers.allPossibleShowNames(ep_obj.show)):
                ep_string = show_name_helpers.sanitizeSceneName(show_name) + ' ' + \
                            sickbeard.config.naming_ep_type[2] % {'seasonnumber': ep_obj.season,
                                                                  'episodenumber': ep_obj.episode} + ' %s' % add_string

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

        return [search_string]

    def _doSearch(self, search_params):

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

        freeleech = '&free=on' if sickbeard.IPTORRENTS_FREELEECH else ''

        if not self._doLogin():
            return []

        for mode in search_params.keys():
            for search_string in search_params[mode]:

                # URL with 50 tv-show results, or max 150 if adjusted in IPTorrents profile
                searchURL = self.urls['search'] % (self.categorie, freeleech, unidecode(search_string))
                searchURL += ';o=seeders' if mode != 'RSS' else ''

                logger.log(u"" + self.name + " search page URL: " + searchURL, logger.DEBUG)

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

                try:
                    html = BeautifulSoup(data, features=["html5lib", "permissive"])

                    if not html:
                        logger.log(u"Invalid HTML data: " + str(data), logger.DEBUG)
                        continue

                    if html.find(text='No Torrents Found!'):
                        logger.log(u"No results found for: " + search_string + " (" + searchURL + ")", logger.DEBUG)
                        continue

                    torrent_table = html.find('table', attrs={'class': 'torrents'})
                    torrents = torrent_table.find_all('tr') if torrent_table else []

                    #Continue only if one Release is found                    
                    if len(torrents) < 2:
                        logger.log(u"The Data returned from " + self.name + " do not contains any torrent",
                                   logger.WARNING)
                        continue

                    for result in torrents[1:]:

                        try:
                            torrent = result.find_all('td')[1].find('a')
                            torrent_name = torrent.string
                            torrent_download_url = self.urls['base_url'] + (result.find_all('td')[3].find('a'))['href']
                            torrent_details_url = self.urls['base_url'] + torrent['href']
                            torrent_seeders = int(result.find('td', attrs={'class': 'ac t_seeders'}).string)
                            ## 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)

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

        return (title, url)

    def getURL(self, url, headers=None):

        if not self.session:
            self._doLogin()

        if not headers:
            headers = []

        try:
            parsed = list(urlparse.urlparse(url))
            parsed[2] = re.sub("/{2,}", "/", parsed[2])  # replace two or more / with one
            url = urlparse.urlunparse(parsed)
            response = self.session.get(url)
        except (requests.exceptions.ConnectionError, requests.exceptions.HTTPError), e:
            logger.log(u"Error loading " + self.name + " URL: " + ex(e), logger.ERROR)
            return None

        if response.status_code != 200:
            logger.log(self.name + u" page requested with url " + url + " returned status code is " + str(
                response.status_code) + ': ' + clients.http_error_code[response.status_code], logger.WARNING)
            return None

        return response.content

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

        results = []

        sqlResults = db.DBConnection().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:
            curShow = helpers.findCertainShow(sickbeard.showList, int(sqlShow["showid"]))
            curEp = curShow.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()))

        return results


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

        tvcache.TVCache.__init__(self, provider)

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

    def updateCache(self):

        if not self.shouldUpdate():
            return

        search_params = {'RSS': ['']}
        rss_results = self.provider._doSearch(search_params)

        if rss_results:
            self.setLastUpdate()
        else:
            return []

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

        cl = []
        for result in rss_results:
            item = (result[0], result[1])
            ci = self._parseItem(item)
            if ci is not None:
                cl.append(ci)

        if len(cl) > 0:
            myDB = self._getDB()
            myDB.mass_action(cl)

    def _parseItem(self, item):

        (title, url) = item

        if not title or not url:
            return None

        logger.log(u"Adding item to cache: " + title, logger.DEBUG)

        return self._addCacheEntry(title, url)


provider = IPTorrentsProvider()