# Author: Nic Wolfe <nic@wolfeden.ca>
# 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/>.

from __future__ import with_statement

import datetime
import threading

import sickbeard
from sickbeard import logger
from sickbeard import db
from sickbeard import common
from sickbeard import helpers
from sickbeard import exceptions
from sickbeard.exceptions import ex


class DailySearcher():
    def __init__(self):
        self.lock = threading.Lock()

        self.amActive = False

    def run(self, force=False):

        self.amActive = True

        providers = [x for x in sickbeard.providers.sortedProviderList() if x.isActive() and not x.backlog_only]
        for curProviderCount, curProvider in enumerate(providers):

            try:
                logger.log(u"Updating [" + curProvider.name + "} RSS cache ...")
                curProvider.cache.updateCache()
            except exceptions.AuthException, e:
                logger.log(u"Authentication error: " + ex(e), logger.ERROR)
                if curProviderCount != len(providers):
                    continue
                break
            except Exception, e:
                logger.log(u"Error while updating cache for " + curProvider.name + ", skipping: " + ex(e), logger.ERROR)
                if curProviderCount != len(providers):
                    continue
                break

        logger.log(u"Searching for coming episodes and 1 weeks worth of previously WANTED episodes ...")

        fromDate = datetime.date.today() - datetime.timedelta(weeks=1)
        curDate = datetime.date.today()

        myDB = db.DBConnection()
        sqlResults = myDB.select("SELECT * FROM tv_episodes WHERE status in (?,?) AND airdate >= ? AND airdate <= ?",
                                 [common.UNAIRED, common.WANTED, fromDate.toordinal(), curDate.toordinal()])

        sql_l = []
        todaysEps = {}
        for sqlEp in sqlResults:

            try:
                show = helpers.findCertainShow(sickbeard.showList, int(sqlEp["showid"]))
            except exceptions.MultipleShowObjectsException:
                logger.log(u"ERROR: expected to find a single show matching " + sqlEp["showid"])
                break

            if not show:
                logger.log(u"Unable to find the show with ID " + str(
                    sqlEp["showid"]) + " in your show list! DB value was " + str(sqlEp), logger.ERROR)
                break

            ep = show.getEpisode(sqlEp["season"], sqlEp["episode"])
            with ep.lock:
                if ep.show.paused:
                    ep.status = common.SKIPPED
                else:
                    if ep.status == common.UNAIRED:
                        logger.log(u"New episode " + ep.prettyName() + " airs today, setting status to WANTED")
                        ep.status = common.WANTED

                if ep.status == common.WANTED:
                    if show not in todaysEps:
                        todaysEps[show] = [ep]
                    else:
                        todaysEps[show].append(ep)

                sql_l.append(ep.get_sql())

        if sql_l:
            myDB = db.DBConnection()
            myDB.mass_action(sql_l)
            del sql_l

        if len(todaysEps):
            for show in todaysEps:
                segment = todaysEps[show]

                # remove show from name cache if marked invalid
                sickbeard.name_cache.clearCache(show)

                dailysearch_queue_item = sickbeard.search_queue.DailySearchQueueItem(show, segment)
                sickbeard.searchQueueScheduler.action.add_item(dailysearch_queue_item)
        else:
            logger.log(u"Could not find any needed episodes to search for ...")

        del todaysEps

        self.amActive = False