# Author: Idan Gutman
# URL: http://code.google.com/p/sickbeard/
#
# 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 re
import traceback
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.exceptions import ex
from sickbeard import clients
from lib import requests
from lib.requests import exceptions
from sickbeard.bs4_parser import BS4Parser
from lib.unidecode import unidecode
from sickbeard.helpers import sanitizeSceneName


class FreshOnTVProvider(generic.TorrentProvider):
    urls = {'base_url': 'http://freshon.tv/',
            'login': 'http://freshon.tv/login.php?action=makelogin',
            'detail': 'http://freshon.tv/details.php?id=%s',
            'search': 'http://freshon.tv/browse.php?incldead=%s&words=0&cat=0&search=%s',
            'download': 'http://freshon.tv/download.php?id=%s&type=torrent',
    }

    def __init__(self):

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

        self.supportsBacklog = True

        self.enabled = False
        self._uid = None
        self._hash = None
        self.username = None
        self.password = None
        self.ratio = None
        self.minseed = None
        self.minleech = None
        self.freeleech = False

        self.cache = FreshOnTVCache(self)

        self.url = self.urls['base_url']
        self.cookies = None

    def isEnabled(self):
        return self.enabled

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

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

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

    def _doLogin(self):
        if any(requests.utils.dict_from_cookiejar(self.session.cookies).values()):
            return True

        if self._uid and self._hash:

           requests.utils.add_dict_to_cookiejar(self.session.cookies, self.cookies)

        else:
            login_params = {'username': self.username,
                            'password': self.password,
                            'login': 'submit'
            }

            if not self.session:
                self.session = requests.Session()

            try:
                response = self.session.post(self.urls['login'], data=login_params, timeout=30, verify=False)
            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('Username does not exist in the userbase or the account is not confirmed yet.', response.text):
               logger.log(u'Invalid username or password for ' + self.name + ' Check your settings', logger.ERROR)
               return False

            if requests.utils.dict_from_cookiejar(self.session.cookies)['uid'] and requests.utils.dict_from_cookiejar(self.session.cookies)['pass']:
                    self._uid = requests.utils.dict_from_cookiejar(self.session.cookies)['uid']
                    self._hash = requests.utils.dict_from_cookiejar(self.session.cookies)['pass']

                    self.cookies = {'uid': self._uid,
                                    'pass': self._hash
                    }
                    return True
            else:
                    logger.log(u'Unable to obtain cookie for FreshOnTV', 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}

                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': []}

        freeleech = '3' if self.freeleech else '0'

        if not self._doLogin():
            return []

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

                if isinstance(search_string, unicode):
                    search_string = unidecode(search_string)


                searchURL = self.urls['search'] % (freeleech, search_string)

                logger.log(u"Search string: " + searchURL, logger.DEBUG)

                # returns top 15 results by default, expandable in user profile to 100
                data = self.getURL(searchURL)
                if not data:
                    continue

                try:
                    with BS4Parser(data, features=["html5lib", "permissive"]) as html:
                        torrent_table = html.find('table', attrs={'class': 'frame'})
                        torrent_rows = torrent_table.findChildren('tr') if torrent_table else []

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

                        # skip colheader
                        for result in torrent_rows[1:]:
                            cells = result.findChildren('td')

                            link = cells[1].find('a', attrs = {'class': 'torrent_name_link'})
                            #skip if torrent has been nuked due to poor quality
                            if cells[1].find('img', alt='Nuked') != None:
                                continue

                            torrent_id = link['href'].replace('/details.php?id=', '')


                            try:
                                if link.has_key('title'):
                                    title = cells[1].find('a', {'class': 'torrent_name_link'})['title']
                                else:
                                    title = link.contents[0]
                                download_url = self.urls['download'] % (torrent_id)
                                id = int(torrent_id)

                                seeders = int(cells[8].find('a', {'class': 'link'}).span.contents[0].strip())
                                leechers = int(cells[9].find('a', {'class': 'link'}).contents[0].strip())
                            except (AttributeError, TypeError):
                                continue

                            #Filter unseeded torrent
                            if mode != 'RSS' and (seeders < self.minseed or leechers < self.minleech):
                                continue

                            if not title or not download_url:
                                continue

                            item = title, download_url, id, seeders, leechers
                            logger.log(u"Found result: " + title + "(" + searchURL + ")", logger.DEBUG)

                            items[mode].append(item)

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

            #For each search mode sort all the items by seeders
            items[mode].sort(key=lambda tup: tup[3], reverse=True)

            results += items[mode]

        return results

    def _get_title_and_url(self, item):

        title, url, id, seeders, leechers = item

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

        return (title, url)

    def getURL(self, url, post_data=None, headers=None, json=False):

        if not self.session:
            self._doLogin()

        if not headers:
            headers = []

        try:
            # Remove double-slashes from url
            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, verify=False)
        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 = []

        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 FreshOnTVCache(tvcache.TVCache):
    def __init__(self, provider):

        tvcache.TVCache.__init__(self, provider)

        # poll delay in minutes
        self.minTime = 20

    def updateCache(self):

        # delete anything older then 7 days
        logger.log(u"Clearing " + self.provider.name + " cache")
        self._clearCache()

        if not self.shouldUpdate():
            return

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

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

        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"Attempting to cache item:[" + title +"]", logger.DEBUG)

        return self._addCacheEntry(title, url)


provider = FreshOnTVProvider()