# 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/>.

from __future__ import unicode_literals

import re
import traceback
from urllib import urlencode

import sickrage
from sickrage.core.caches import tv_cache
from sickrage.core.exceptions import AuthException
from sickrage.core.helpers import bs4_parser
from sickrage.providers import TorrentProvider


class TransmitTheNetProvider(TorrentProvider):
    def __init__(self):

        super(TransmitTheNetProvider, self).__init__("TransmitTheNet",'transmithe.net', True)

        self.supportsBacklog = True

        self.username = None
        self.password = None
        self.ratio = None
        self.minseed = None
        self.minleech = None

        self.cache = TransmitTheNetCache(self)

        self.search_params = {
            "page": 'torrents',
            "category": 0,
            "active": 1
        }

    def _checkAuth(self):

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

        return True

    def _doLogin(self):

        login_params = {
            'uid': self.username,
            'pwd': self.password,
            'remember_me': 'on',
            'login': 'submit'
        }

        try:
            response = sickrage.srCore.srWebSession.post(self.urls['base_url'], params={'page': 'login'}, data=login_params, timeout=30).text
        except Exception:
            sickrage.srCore.srLogger.warning("[{}]: Unable to connect to provider".format(self.name))
            return False

        if re.search('Username Incorrect', response) or re.search('Password Incorrect', response):
            sickrage.srCore.srLogger.warning("[{}]: Invalid username or password. Check your settings".format(self.name))
            return False

        return True

    def search(self, search_strings, search_mode='eponly', epcount=0, age=0, epObj=None):

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

        if not self._doLogin():
            return results

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

                if mode != 'RSS':
                    sickrage.srCore.srLogger.debug("Search string: %s " % search_string)

                searchURL = self.urls['base_url'] + "?" + urlencode(self.search_params)
                sickrage.srCore.srLogger.debug("Search URL: %s" % searchURL)

                try:
                    data = sickrage.srCore.srWebSession.get(searchURL).text
                except Exception:
                    sickrage.srCore.srLogger.debug("No data returned from provider")
                    continue

                try:
                    with bs4_parser(data) as html:

                        torrent_rows = []

                        down_elems = html.findAll("img", {"alt": "Download Torrent"})
                        for down_elem in down_elems:
                            if down_elem:
                                torr_row = down_elem.findParent('tr')
                                if torr_row:
                                    torrent_rows.append(torr_row)

                        # Continue only if one Release is found
                        if len(torrent_rows) < 1:
                            sickrage.srCore.srLogger.debug("Data returned from provider does not contain any torrents")
                            continue

                        for torrent_row in torrent_rows:

                            title = torrent_row.find('a', {"data-src": True})['data-src'].rsplit('.', 1)[0]
                            download_href = torrent_row.find('img', {"alt": 'Download Torrent'}).findParent()['href']
                            seeders = int(
                                    torrent_row.findAll('a', {'title': 'Click here to view peers details'})[
                                        0].text.strip())
                            leechers = int(
                                    torrent_row.findAll('a', {'title': 'Click here to view peers details'})[
                                        1].text.strip())
                            download_url = self.urls['base_url'] + download_href
                            # FIXME
                            size = -1

                            if not all([title, download_url]):
                                continue

                            # Filter unseeded torrent
                            if seeders < self.minseed or leechers < self.minleech:
                                if mode != 'RSS':
                                    sickrage.srCore.srLogger.debug(
                                            "Discarding torrent because it doesn't meet the minimum seeders or leechers: {0} (S:{1} L:{2})".format(
                                                    title, seeders, leechers))
                                continue

                            item = title, download_url, size, seeders, leechers
                            if mode != 'RSS':
                                sickrage.srCore.srLogger.debug("Found result: %s " % title)

                            items[mode].append(item)

                except Exception:
                    sickrage.srCore.srLogger.error("Failed parsing provider. Traceback: {}".format(traceback.format_exc()))

            # 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 seedRatio(self):
        return self.ratio


class TransmitTheNetCache(tv_cache.TVCache):
    def __init__(self, provider_obj):
        tv_cache.TVCache.__init__(self, provider_obj)

        # Only poll TransmitTheNet every 20 minutes max
        self.minTime = 20

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