private async Task <(IReadOnlyCollection <SongModel> Songs, int?CurrentSongIndex)> LoadPlaylistData(CancellationToken cancellationToken)
{
var playListData = await sessionDataService.GetData <PlaylistData>(PlaylistDataKey, cancellationToken);
if (playListData == null)
{
logger.LogInformation("No previous playlist data loaded");
return(null, null);
}
return(await LoadPlaylistSongs(playListData, cancellationToken));
}
private async Task EnsureLoaded(CancellationToken cancellationToken)
{
if (loaded)
{
return;
}
var scrobbles = await sessionDataService.GetData <TrackScrobble[]>(ScrobblesDataKey, cancellationToken);
foreach (var item in scrobbles ?? Enumerable.Empty <TrackScrobble>())
{
scrobblesQueue.Enqueue(item);
}
loaded = true;
}
public async Task <IReadOnlyCollection <AdvisedPlaylist> > Advise(IEnumerable <DiscModel> discs, int requiredAdvisesCount, CancellationToken cancellationToken)
{
Memo ??= await sessionDataService.GetData <PlaylistAdviserMemo>(PlaylistAdviserDataKey, cancellationToken) ?? CreateDefaultMemo();
var playbacksMemo = Memo;
var adviseGroups = (await discGrouper.GroupLibraryDiscs(discs, cancellationToken)).ToList();
var playbacksInfo = new PlaybacksInfo(adviseGroups);
var highlyRatedSongsAdvises = await highlyRatedSongsAdviser.Advise(adviseGroups, playbacksInfo, cancellationToken);
var favoriteAdviseGroupAdvises = await favoriteAdviseGroupsAdviser.Advise(adviseGroups, playbacksInfo, cancellationToken);
var rankedAdvises = await rankBasedAdviser.Advise(adviseGroups, playbacksInfo, cancellationToken);
var playlistQueue = new CompositeAdvisedPlaylistQueue(highlyRatedSongsAdvises, favoriteAdviseGroupAdvises, rankedAdvises);
var advisedPlaylists = new List <AdvisedPlaylist>(requiredAdvisesCount);
var knownAdviseSets = new HashSet <string>();
while (advisedPlaylists.Count < requiredAdvisesCount)
{
var currentAdvise = GetNextAdvisedPlaylist(playbacksMemo, playlistQueue);
if (currentAdvise == null)
{
break;
}
var adviseSet = currentAdvise.AdviseSet;
if (adviseSet != null)
{
if (knownAdviseSets.Contains(adviseSet.Id))
{
continue;
}
knownAdviseSets.Add(adviseSet.Id);
}
advisedPlaylists.Add(currentAdvise);
playbacksMemo = playbacksMemo.RegisterPlayback(currentAdvise);
}
return(advisedPlaylists);
}