progress property
Duration
get
progress
How long the track been has been playing, as a Duration
If the track is playing: how much had been played at the time the state was recorded, plus elapsed time since then
If the track is not playing: how much had been played at the time the state was recorded
Implementation
Duration get progress {
if (state == NowPlayingState.playing)
return position + DateTime.now().difference(createdAt);
return position;
}