Support smart playlist

[Hellowlol]

post

https://ip:32400/playlists?type=video&title=TV%20Shows&smart=1&uri=library%3A%2F%2Fc6aaf29c-85a2-40dc-9a42-71ebcd615c9f%2Fdirectory%2F%252Flibrary%252Fsections%252F2%252Fall%253Ftype%253D4%2526episode.viewCount%25253E%25253E%253D0%2526sourceType%253D4&X-Plex-Product=Plex%20Web&X-Plex-Version=3.20.7&X-Plex-Client-Identifier=fzzf&X-Plex-Platform=Chrome&X-Plex-Platform-Version=61.0&X-Plex-Device=Windows&X-Plex-Device-Name=Plex%20Web%20%28Chrome%29&X-Plex-Device-Screen-Resolution=1280x615%2C1280x720&X-Plex-Token=xxx

[blacktwin]

I've started working on this. Here is a request POST that will create a Smart Playlist:

url = 'http://localhost:32400/playlists?'
headers = {'Accept': 'application/json'}

machine = plex.machineIdentifier
section = 2

params = {
          'X-Plex-Token': PLEX_TOKEN,
          'type': 'video',
          'title': 'Movies',
          'smart': '1',
          'uri': 'library://{machine}/directory//library/sections/{section}/all?'
                 'type=video'
                 '&sourceType=1'
                 '&genre=35' 
                 '&limit=5'
                 '&unwatched=1'.format(machine=machine, section=section)}

r = requests.post(url, headers=headers, params=params)

I've tried to reproduce this with PlexAPI but can't seem to get it right.
I've modified the following files:
server.py

    def createSmartPlaylist(self, title, libraryName, limit=None, **kwargs):
        """ Creates and returns a new :class:`~plexapi.playlist.Playlist`.

            Parameters:
                title (str): Title of the playlist to be created.
                libraryName (str): Library name
                limit (int): Limit of items to include in smart playlist.
        """
        return Playlist.createSmart(self, title, libraryName, limit, **kwargs)

playlist.py

    @classmethod
    def createSmart(cls, server, title, libraryName, limit=None, **kwargs):
        """ Create a Smart playlist. """
        keyArgs = {}
        section = server.library.section(libraryName)
        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 choice.title.lower() == value.lower():
                    uri = uri + '&%s=%s' % (category.lower(), str(choice.key))
        key = '/playlists%s' % utils.joinArgs({
            'uri': uri,
            'type': sectionType,
            'title': title,
            'smart': 1
        })
        data = server.query(key, method=server._session.post)[0]

        return cls(server, data, initpath=key)

The command to run: plex.createSmartPlaylist(title='TESTTEST', limit=10, libraryName='Movies', **{'genre': 'Action'})

I've been trying to match the url from the POST and the key var from plexapi.

[Hellowlol]

@pkkid Any idea what travis is complaining about in my branch? https://github.com/pkkid/python-plexapi/tree/smart

[pkkid]

I noticed sometimes things fail and if I kick it off again it will pass. I just started you're one failing build again, we can see if this is the case. -- We should figure it out and be a bit ore graceful, but I never put time into it yet.

[blacktwin]

Some of the FILTERS or sectionChoices are not working properly when attempting to create a Smart Playlist.

plex.createPlaylist("test", section="Movies", smart=True, unwatched=True, **{'genre':"Horror"})
This will not use the unwatched FILTER/Choice, instead you just get the genre filter. Also because title is used for the naming of the Playlist **{'title':'Die Hard'} will return: TypeError: create() got multiple values for argument 'title'. Maybe changing the parameter to name or playlist_title?

As it happens, looks like I accidentally omitted title from the ALLOWED_FILTERS for the MovieSection in PR #364 .

[blacktwin]

PR incoming for playlist.py

        for category, value in kwargs.items():
            if section.listChoices(category):
                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))
            ####New check for BOOLEN FILTER
            if category in section.BOOLEAN_FILTERS:
                int_bool = section._cleanSearchFilter(category, value)
                uri = uri + '&%s=%s' % (category.lower(), str(int_bool))

previous code would not pass unwatched filter if used.
plex.createPlaylist("test", section="Movies", smart=True, unwatched=True, **{'genre':"Horror"}) or
plex.createPlaylist("test", section="Movies", smart=True, **{'unwatched':True, 'genre':"Horror"})

Any thoughts on what to rename the title parameter? playlist_title or playlistTtile