# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# 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 sickbeard

import urllib
import datetime

from common import USER_AGENT, Quality

class SickBeardURLopener(urllib.FancyURLopener):
    version = USER_AGENT

class AuthURLOpener(SickBeardURLopener):
    """
    URLOpener class that supports http auth without needing interactive password entry.
    If the provided username/password don't work it simply fails.
    
    user: username to use for HTTP auth
    pw: password to use for HTTP auth
    """
    def __init__(self, user, pw):
        self.username = user
        self.password = pw

        # remember if we've tried the username/password before
        self.numTries = 0
        
        # call the base class
        urllib.FancyURLopener.__init__(self)

    def prompt_user_passwd(self, host, realm):
        """
        Override this function and instead of prompting just give the
        username/password that were provided when the class was instantiated.
        """

        # if this is the first try then provide a username/password
        if self.numTries == 0:
            self.numTries = 1
            return (self.username, self.password)
        
        # if we've tried before then return blank which cancels the request
        else:
            return ('', '')

    # this is pretty much just a hack for convenience
    def openit(self, url):
        self.numTries = 0
        return SickBeardURLopener.open(self, url)

class SearchResult:
    """
    Represents a search result from an indexer.
    """

    def __init__(self, episodes):
        self.provider = -1

        # URL to the NZB/torrent file
        self.url = ""

        # used by some providers to store extra info associated with the result
        self.extraInfo = []

        # list of TVEpisode objects that this result is associated with
        self.episodes = episodes

        # quality of the release
        self.quality = Quality.UNKNOWN

        # release name
        self.name = ""

    def __str__(self):

        if self.provider == None:
            return "Invalid provider, unable to print self"

        myString = self.provider.name + " @ " + self.url + "\n"
        myString += "Extra Info:\n"
        for extra in self.extraInfo:
            myString += "  " + extra + "\n"
        return myString

    def fileName(self):
        return self.episodes[0].prettyName() + "." + self.resultType

class NZBSearchResult(SearchResult):
    """
    Regular NZB result with an URL to the NZB
    """
    resultType = "nzb"
    is_proper = False

class NZBDataSearchResult(SearchResult):
    """
    NZB result where the actual NZB XML data is stored in the extraInfo
    """
    resultType = "nzbdata"

class TorrentSearchResult(SearchResult):
    """
    Torrent result with an URL to the torrent
    """
    resultType = "torrent"


class ShowListUI:
    """
    This class is for tvdb-api. Instead of prompting with a UI to pick the
    desired result out of a list of shows it tries to be smart about it
    based on what shows are in SB. 
    """
    def __init__(self, config, log=None):
        self.config = config
        self.log = log

    def selectSeries(self, allSeries):
        idList = [x.tvdbid for x in sickbeard.showList]

        # try to pick a show that's in my show list
        for curShow in allSeries:
            if int(curShow['id']) in idList:
                return curShow

        # if nothing matches then just go with the first match I guess
        return allSeries[0]

class Proper:
    def __init__(self, name, url, date):
        self.name = name
        self.url = url
        self.date = date
        self.provider = None
        self.quality = Quality.UNKNOWN

        self.tvdbid = -1
        self.season = -1
        self.episode = -1

    def __str__(self):
        return str(self.date)+" "+self.name+" "+str(self.season)+"x"+str(self.episode)+" of "+str(self.tvdbid)


class ErrorViewer():
    """
    Keeps a static list of UIErrors to be displayed on the UI and allows
    the list to be cleared.
    """

    errors = []

    def __init__(self):
        ErrorViewer.errors = []

    @staticmethod
    def add(error):
        ErrorViewer.errors.append(error)

    @staticmethod
    def clear():
        ErrorViewer.errors = []

class UIError():
    """
    Represents an error to be displayed in the web UI.
    """
    def __init__(self, message):
        self.message = message
        self.time = datetime.datetime.now()
