# -*- coding: utf-8 -*-
from urllib.parse import quote_plus

from plexapi import utils
from plexapi.base import Playable, PlexPartialObject
from plexapi.exceptions import BadRequest, NotFound, Unsupported
from plexapi.library import LibrarySection
from plexapi.mixins import ArtMixin, PosterMixin
from plexapi.playqueue import PlayQueue
from plexapi.utils import cast, toDatetime


@utils.registerPlexObject
class Playlist(PlexPartialObject, Playable, ArtMixin, PosterMixin):
    """ Represents a single Playlist.

        Attributes:
            TAG (str): 'Playlist'
            TYPE (str): 'playlist'
            addedAt (datetime): Datetime the playlist was added to the server.
            allowSync (bool): True if you allow syncing playlists.
            composite (str): URL to composite image (/playlist/<ratingKey>/composite/<compositeid>)
            duration (int): Duration of the playlist in milliseconds.
            durationInSeconds (int): Duration of the playlist in seconds.
            guid (str): Plex GUID for the playlist (com.plexapp.agents.none://XXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXX).
            key (str): API URL (/playlist/<ratingkey>).
            leafCount (int): Number of items in the playlist view.
            playlistType (str): 'audio', 'video', or 'photo'
            ratingKey (int): Unique key identifying the playlist.
            smart (bool): True if the playlist is a smart playlist.
            summary (str): Summary of the playlist.
            title (str): Name of the playlist.
            type (str): 'playlist'
            updatedAt (datatime): Datetime the playlist was updated.
    """
    TAG = 'Playlist'
    TYPE = 'playlist'

    def _loadData(self, data):
        """ Load attribute values from Plex XML response. """
        Playable._loadData(self, data)
        self.addedAt = toDatetime(data.attrib.get('addedAt'))
        self.allowSync = cast(bool, data.attrib.get('allowSync'))
        self.composite = data.attrib.get('composite')  # url to thumbnail
        self.duration = cast(int, data.attrib.get('duration'))
        self.durationInSeconds = cast(int, data.attrib.get('durationInSeconds'))
        self.guid = data.attrib.get('guid')
        self.key = data.attrib.get('key', '').replace('/items', '')  # FIX_BUG_50
        self.leafCount = cast(int, data.attrib.get('leafCount'))
        self.playlistType = data.attrib.get('playlistType')
        self.ratingKey = cast(int, data.attrib.get('ratingKey'))
        self.smart = cast(bool, data.attrib.get('smart'))
        self.summary = data.attrib.get('summary')
        self.title = data.attrib.get('title')
        self.type = data.attrib.get('type')
        self.updatedAt = toDatetime(data.attrib.get('updatedAt'))
        self._items = None  # cache for self.items

    def __len__(self):  # pragma: no cover
        return len(self.items())

    def __iter__(self):  # pragma: no cover
        for item in self.items():
            yield item

    @property
    def thumb(self):
        """ Alias to self.composite. """
        return self.composite

    @property
    def metadataType(self):
        if self.isVideo:
            return 'movie'
        elif self.isAudio:
            return 'track'
        elif self.isPhoto:
            return 'photo'
        else:
            raise Unsupported('Unexpected playlist type')

    @property
    def isVideo(self):
        return self.playlistType == 'video'

    @property
    def isAudio(self):
        return self.playlistType == 'audio'

    @property
    def isPhoto(self):
        return self.playlistType == 'photo'

    def __contains__(self, other):  # pragma: no cover
        return any(i.key == other.key for i in self.items())

    def __getitem__(self, key):  # pragma: no cover
        return self.items()[key]

    def item(self, title):
        """ Returns the item in the playlist that matches the specified title.

            Parameters:
                title (str): Title of the item to return.
        """
        for item in self.items():
            if item.title.lower() == title.lower():
                return item
        raise NotFound('Item with title "%s" not found in the playlist' % title)

    def items(self):
        """ Returns a list of all items in the playlist. """
        if self._items is None:
            key = '/playlists/%s/items' % self.ratingKey
            items = self.fetchItems(key)
            self._items = items
        return self._items

    def get(self, title):
        """ Alias to :func:`~plexapi.playlist.Playlist.item`. """
        return self.item(title)

    def addItems(self, items):
        """ Add items to a playlist. """
        if not isinstance(items, (list, tuple)):
            items = [items]
        ratingKeys = []
        for item in items:
            if item.listType != self.playlistType:  # pragma: no cover
                raise BadRequest('Can not mix media types when building a playlist: %s and %s' %
                    (self.playlistType, item.listType))
            ratingKeys.append(str(item.ratingKey))
        uuid = items[0].section().uuid
        ratingKeys = ','.join(ratingKeys)
        key = '%s/items%s' % (self.key, utils.joinArgs({
            'uri': 'library://%s/directory//library/metadata/%s' % (uuid, ratingKeys)
        }))
        result = self._server.query(key, method=self._server._session.put)
        self.reload()
        return result

    def removeItem(self, item):
        """ Remove a file from a playlist. """
        key = '%s/items/%s' % (self.key, item.playlistItemID)
        result = self._server.query(key, method=self._server._session.delete)
        self.reload()
        return result

    def moveItem(self, item, after=None):
        """ Move a to a new position in playlist. """
        key = '%s/items/%s/move' % (self.key, item.playlistItemID)
        if after:
            key += '?after=%s' % after.playlistItemID
        result = self._server.query(key, method=self._server._session.put)
        self.reload()
        return result

    def edit(self, title=None, summary=None):
        """ Edit playlist. """
        key = '/library/metadata/%s%s' % (self.ratingKey, utils.joinArgs({'title': title, 'summary': summary}))
        result = self._server.query(key, method=self._server._session.put)
        self.reload()
        return result

    def delete(self):
        """ Delete playlist. """
        return self._server.query(self.key, method=self._server._session.delete)

    def playQueue(self, *args, **kwargs):
        """ Create a playqueue from this playlist. """
        return PlayQueue.create(self._server, self, *args, **kwargs)

    @classmethod
    def _create(cls, server, title, items):
        """ Create a playlist. """
        if not items:
            raise BadRequest('Must include items to add when creating new playlist')
            
        if items and not isinstance(items, (list, tuple)):
            items = [items]
        ratingKeys = []
        for item in items:
            if item.listType != items[0].listType:  # pragma: no cover
                raise BadRequest('Can not mix media types when building a playlist')
            ratingKeys.append(str(item.ratingKey))
        ratingKeys = ','.join(ratingKeys)
        uuid = items[0].section().uuid
        key = '/playlists%s' % utils.joinArgs({
            'uri': 'library://%s/directory//library/metadata/%s' % (uuid, ratingKeys),
            'type': items[0].listType,
            'title': title,
            'smart': 0
        })
        data = server.query(key, method=server._session.post)[0]
        return cls(server, data, initpath=key)

    @classmethod
    def create(cls, server, title, items=None, section=None, limit=None, smart=False, **kwargs):
        """Create a playlist.

        Parameters:
            server (:class:`~plexapi.server.PlexServer`): Server your connected to.
            title (str): Title of the playlist.
            items (Iterable): Iterable of objects that should be in the playlist.
            section (:class:`~plexapi.library.LibrarySection`, str):
            limit (int): default None.
            smart (bool): default False.

            **kwargs (dict): is passed to the filters. For a example see the search method.
            
        Raises:
            :class:`plexapi.exceptions.BadRequest`: when no items are included in create request.

        Returns:
            :class:`~plexapi.playlist.Playlist`: an instance of created Playlist.
        """
        if smart:
            return cls._createSmart(server, title, section, limit, **kwargs)

        else:
            return cls._create(server, title, items)

    @classmethod
    def _createSmart(cls, server, title, section, limit=None, **kwargs):
        """ Create a Smart playlist. """

        if not isinstance(section, LibrarySection):
            section = server.library.section(section)

        sectionType = utils.searchType(section.type)
        sectionId = section.key
        uuid = section.uuid
        uri = 'library://%s/directory//library/sections/%s/all?type=%s' % (uuid,
                                                                           sectionId,
                                                                           sectionType)
        if limit:
            uri = uri + '&limit=%s' % str(limit)

        for category, value in kwargs.items():
            sectionChoices = section.listChoices(category)
            for choice in sectionChoices:
                if str(choice.title).lower() == str(value).lower():
                    uri = uri + '&%s=%s' % (category.lower(), str(choice.key))

        uri = uri + '&sourceType=%s' % sectionType
        key = '/playlists%s' % utils.joinArgs({
            'uri': uri,
            'type': section.CONTENT_TYPE,
            'title': title,
            'smart': 1,
        })
        data = server.query(key, method=server._session.post)[0]
        return cls(server, data, initpath=key)

    def copyToUser(self, user):
        """ Copy playlist to another user account. """
        from plexapi.server import PlexServer
        myplex = self._server.myPlexAccount()
        user = myplex.user(user)
        # Get the token for your machine.
        token = user.get_token(self._server.machineIdentifier)
        # Login to your server using your friends credentials.
        user_server = PlexServer(self._server._baseurl, token)
        return self.create(user_server, self.title, self.items())

    def sync(self, videoQuality=None, photoResolution=None, audioBitrate=None, client=None, clientId=None, limit=None,
             unwatched=False, title=None):
        """ Add current playlist as sync item for specified device.
            See :func:`~plexapi.myplex.MyPlexAccount.sync` for possible exceptions.

            Parameters:
                videoQuality (int): idx of quality of the video, one of VIDEO_QUALITY_* values defined in
                                    :mod:`~plexapi.sync` module. Used only when playlist contains video.
                photoResolution (str): maximum allowed resolution for synchronized photos, see PHOTO_QUALITY_* values in
                                       the module :mod:`~plexapi.sync`. Used only when playlist contains photos.
                audioBitrate (int): maximum bitrate for synchronized music, better use one of MUSIC_BITRATE_* values
                                    from the module :mod:`~plexapi.sync`. Used only when playlist contains audio.
                client (:class:`~plexapi.myplex.MyPlexDevice`): sync destination, see
                                                               :func:`~plexapi.myplex.MyPlexAccount.sync`.
                clientId (str): sync destination, see :func:`~plexapi.myplex.MyPlexAccount.sync`.
                limit (int): maximum count of items to sync, unlimited if `None`.
                unwatched (bool): if `True` watched videos wouldn't be synced.
                title (str): descriptive title for the new :class:`~plexapi.sync.SyncItem`, if empty the value would be
                             generated from metadata of current photo.

            Raises:
                :exc:`~plexapi.exceptions.BadRequest`: When playlist is not allowed to sync.
                :exc:`~plexapi.exceptions.Unsupported`: When playlist content is unsupported.

            Returns:
                :class:`~plexapi.sync.SyncItem`: an instance of created syncItem.
        """

        if not self.allowSync:
            raise BadRequest('The playlist is not allowed to sync')

        from plexapi.sync import SyncItem, Policy, MediaSettings

        myplex = self._server.myPlexAccount()
        sync_item = SyncItem(self._server, None)
        sync_item.title = title if title else self.title
        sync_item.rootTitle = self.title
        sync_item.contentType = self.playlistType
        sync_item.metadataType = self.metadataType
        sync_item.machineIdentifier = self._server.machineIdentifier

        sync_item.location = 'playlist:///%s' % quote_plus(self.guid)
        sync_item.policy = Policy.create(limit, unwatched)

        if self.isVideo:
            sync_item.mediaSettings = MediaSettings.createVideo(videoQuality)
        elif self.isAudio:
            sync_item.mediaSettings = MediaSettings.createMusic(audioBitrate)
        elif self.isPhoto:
            sync_item.mediaSettings = MediaSettings.createPhoto(photoResolution)
        else:
            raise Unsupported('Unsupported playlist content')

        return myplex.sync(sync_item, client=client, clientId=clientId)