The playback queue is now kept in sync with the playback queue of the
remote jellyfin instance the manager is controlling.
Some additional guards were added in place in the shuffle and playlist
algorithm, since the situation can occur where the now playing index
falls outside of the playing playlist. This happens because when the
an playlist update is received, we need to do another HTTP request
before we know which items are in the queue, while the now playing index
has been updated.
This is a not-optimal way to fix that, but it works well enough for now
and a better solution can be implemented later. (Hello, person in the
future reading the git blame output!)
The PlaybackManager was a giant class that handled UI bindings, fetching
stream URLS, playback logic.
It now has been split up into:
- ViewModel::PlaybackManager, which handles UI interfacing and allowing
to swap out the Model::Playback implementation on the fly.
- Model::PlaybackManager, which is an interface for what a
PlaybackManager must do, handling queues/playlists, and controlling a
player.
- Model::LocalPlaybackManager, which is an Model::PlaybackManager
implementation for playing back Jellyfin media within the application.
- Model::PlaybackReporter, which reports the current playback state to
the Jellyfin server, for keeping track of played items.
- Model::Player, which handles playing back media from an URL and
the usual play/pause et cetera.
In a future commit, this would allow for introducing a
Model::RemoteJellyfinPlaybackManager, to control other Jellyfin
instances.