public bool RemovePlaylist(LocalPlaylist localPlaylist)
{
var result = _playlistRepository.Delete(localPlaylist.Id);
RemoveHandleItemsChanged(localPlaylist);
return(_playlists.Remove(localPlaylist));
}
void HandleItemsChanged(LocalPlaylist playlist)
{
CompositeDisposable disposables = new CompositeDisposable();
LocalMylistPropertyChangedObserverMap.Add(playlist.Id, disposables);
Observable.FromEventPattern <LocalPlaylistItemAddedEventArgs>(
h => playlist.ItemAdded += h,
h => playlist.ItemAdded -= h
)
.Subscribe(args =>
{
var sender = args.Sender as LocalPlaylist;
_notificationService.ShowInAppNotification(new InAppNotificationPayload()
{
Content = "InAppNotification_LocalPlaylistAddedItems".Translate(sender.Label, args.EventArgs.AddedItems.Count)
});
})
.AddTo(disposables);
Observable.FromEventPattern <LocalPlaylistItemRemovedEventArgs>(
h => playlist.ItemRemoved += h,
h => playlist.ItemRemoved -= h
)
.Subscribe(args =>
{
var sender = args.Sender as LocalPlaylist;
_notificationService.ShowInAppNotification(new InAppNotificationPayload()
{
Content = "InAppNotification_LocalPlaylistRemovedItems".Translate(sender.Label, args.EventArgs.RemovedItems.Count)
});
})
.AddTo(disposables);
}
void RemoveHandleItemsChanged(LocalPlaylist playlist)
{
if (LocalMylistPropertyChangedObserverMap.Remove(playlist.Id, out var disposables))
{
disposables.Dispose();
}
}
private LocalPlaylist CreatePlaylist_Internal(string label)
{
var entity = new PlaylistEntity()
{
Id = LiteDB.ObjectId.NewObjectId().ToString(),
Count = 0,
Label = label,
PlaylistOrigin = PlaylistOrigin.Local
};
_playlistRepository.Upsert(entity);
_playlistIdToEntity.Add(entity.Id, entity);
var playlist = new LocalPlaylist(entity.Id, _playlistRepository)
{
Label = label,
};
HandleItemsChanged(playlist);
_playlists.Add(playlist);
return(playlist);
}
