# Author: echel0n <echel0n@sickrage.ca>
# URL: https://sickrage.tv
# Git: https://github.com/SiCKRAGETV/SickRage.git
#
# 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 datetime
import threading

import sickrage
from sickrage.core.common import UNAIRED, SKIPPED, statusStrings, WANTED
from sickrage.core.databases.main import MainDB
from sickrage.core.exceptions import MultipleShowObjectsException
from sickrage.core.helpers import findCertainShow
from sickrage.core.queues.search import DailySearchQueueItem
from sickrage.core.tv.show.history import FailedHistory
from sickrage.core.updaters import tz_updater


class srDailySearcher(object):
    def __init__(self, *args, **kwargs):
        self.name = "DAILYSEARCHER"
        self.lock = threading.Lock()
        self.amActive = False

    def run(self, force=False):
        """
        Runs the daily searcher, queuing selected episodes for search
        :param force: Force search
        """
        if self.amActive:
            return

        self.amActive = True

        # set thread name
        threading.currentThread().setName(self.name)

        # trim failed download history
        if sickrage.srCore.srConfig.USE_FAILED_DOWNLOADS:
            FailedHistory.trimHistory()

        sickrage.srCore.srLogger.info("Searching for new released episodes ...")

        curDate = (datetime.date.today() + datetime.timedelta(days=2)).toordinal()
        if tz_updater.load_network_dict():
            curDate = (datetime.date.today() + datetime.timedelta(days=1)).toordinal()

        curTime = datetime.datetime.now(tz_updater.sr_timezone)

        show = None
        for dbData in [x['doc'] for x in MainDB().db.all('tv_episodes', with_doc=True)
                       if x['doc']['status'] in [UNAIRED, WANTED]
                       and x['doc']['season'] > 0
                       and curDate >= x['doc']['airdate'] > 1]:
            try:
                if not show or int(dbData['showid']) != show.indexerid:
                    show = findCertainShow(sickrage.srCore.SHOWLIST, int(dbData['showid']))

                # for when there is orphaned series in the database but not loaded into our showlist
                if not show or show.paused:
                    continue

            except MultipleShowObjectsException:
                sickrage.srCore.srLogger.info("ERROR: expected to find a single show matching " + str(dbData['showid']))
                continue

            if show.airs and show.network:
                # This is how you assure it is always converted to local time
                air_time = tz_updater.parse_date_time(dbData['airdate'], show.airs, show.network,
                                                      dateOnly=True).astimezone(tz_updater.sr_timezone)

                # filter out any episodes that haven't started airing yet,
                # but set them to the default status while they are airing
                # so they are snatched faster
                if air_time > curTime:
                    continue

            ep = show.getEpisode(int(dbData['season']), int(dbData['episode']))
            with ep.lock:
                if ep.season == 0:
                    sickrage.srCore.srLogger.info(
                        "New episode " + ep.prettyName() + " airs today, setting status to SKIPPED because is a special season")
                    ep.status = SKIPPED
                else:
                    sickrage.srCore.srLogger.info(
                        "New episode %s airs today, setting to default episode status for this show: %s" % (
                            ep.prettyName(), statusStrings[ep.show.default_ep_status]))
                    ep.status = ep.show.default_ep_status

                ep.saveToDB()
        else:
            sickrage.srCore.srLogger.info("No new released episodes found ...")

        # queue episode for daily search
        sickrage.srCore.SEARCHQUEUE.put(DailySearchQueueItem())

        self.amActive = False
