core: Plex broken for media_player.play_media

Home Assistant release with the issue:

0.85.0.dev0 (Fresh pull)

Last working Home Assistant release (if known): Not known

Operating environment (Hass.io/Docker/Windows/etc.):

(home-assistant) max@ubuntu:~/forks/home-assistant$ uname -a
Linux ubuntu 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
(home-assistant) max@ubuntu:~/forks/home-assistant$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"

Dev environment set from the dev guide.

Component/platform:

https://www.home-assistant.io/components/media_player.plex/

Description of problem: Cannot call service media_player.play_media on a plex client The plexapi library seems to have changed? some attributes are prefixed with an underscore, which the current plex.py doesn’t address. This seems related to #16250. Repro:

1. Configure plex in Home assistant
2. Go to the service tool
3. call media_player.play_media with this service data:

{
  "entity_id": "media_player.chrome",
  "media_content_id": "{\"library_name\": \"Movies\", \"video_name\": \"Baby Shark\", \"shuffle\": \"0\"}",
  "media_content_type": "VIDEO"
}

I’ll submit a PR that fixes that.

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant): Auto-discovered

# Discover some devices automatically
discovery:

plex.conf

{
    "192.168.1.150:32400": {
        "ssl": false,
        "token": "xxx",
        "verify": false
    }
}

Traceback (if applicable):

2018-12-28 10:24:46 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/home/max/forks/home-assistant/homeassistant/helpers/service.py", line 288, in _handle_service_platform_call
    await func(entity, data)
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/max/forks/home-assistant/homeassistant/components/media_player/plex.py", line 763, in play_media
    media = self.device.server.library.section(
AttributeError: 'PlexClient' object has no attribute 'server'

Once Fixed:

2018-12-28 10:37:06 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/home/max/forks/home-assistant/homeassistant/helpers/service.py", line 288, in _handle_service_platform_call
    await func(entity, data)
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/max/forks/home-assistant/homeassistant/components/media_player/plex.py", line 773, in play_media
    self._client_play_media(media=media, shuffle=src['shuffle'])
  File "/home/max/forks/home-assistant/homeassistant/components/media_player/plex.py", line 835, in _client_play_media
    server_url = self.device._server.baseurl.split(':')
AttributeError: 'PlexServer' object has no attribute 'baseurl'

Additional information: