protected void PreviousTrackClick()
{
if (PlaylistTracks.Count <= 1)
{
return;
}
if (PlaylistTracks.IndexOf(Data.CurrentTrack) == 0)
{
Data.CurrentTrack = PlaylistTracks[PlaylistTracks.Count - 1];
}
else
{
Data.CurrentTrack = PlaylistTracks[(PlaylistTracks.ToList().IndexOf(Data.CurrentTrack) - 1) % PlaylistTracks.Count];
}
}
/// <summary>
/// Randomize the currently playlist, remove all of the tracks from the playlist, add all of the tracks back in a random order
/// </summary>
/// <returns></returns>
public async Task Randify()
{
if (IsRandifying || IsPlaylistLoading)
{
return;
}
IsRandifying = true;
var currentPlaylist = CurrentPlaylist;
var randomTracks = PlaylistTracks.ToList();
var listOfSkippedTracks = new List <PlaylistTrack>();
var tracks = new List <Track>();
// it looks overcomplicated and you're right, but the spotify endpoint has a limit of 100 songs
try
{
for (int i = 0; i < randomTracks.Count; i++)
{
if (!string.IsNullOrEmpty(randomTracks[i].Track.Id) && !string.IsNullOrWhiteSpace(randomTracks[i].Track.Id))
{
tracks.Add(randomTracks[i].Track);
}
else
{
listOfSkippedTracks.Add(randomTracks[i]);
}
if (i % 100 == 0)
{
await SpotifyService.RemoveTracksFromPlaylist(AuthenticationService.User, AuthenticationService.AuthenticationToken, currentPlaylist, tracks);
tracks.Clear();
}
}
await SpotifyService.RemoveTracksFromPlaylist(AuthenticationService.User, AuthenticationService.AuthenticationToken, currentPlaylist, tracks);
}
catch (Exception ex)
{
PageException = ex;
}
tracks.Clear();
randomTracks = randomTracks
.OrderBy(o => Guid.NewGuid())
.ToList();
// it looks overcomplicated and you're right, but the spotify endpoint has a limit of 100 songs
try
{
for (int i = 0; i < randomTracks.Count; i++)
{
if (!string.IsNullOrEmpty(randomTracks[i].Track.Id) && !string.IsNullOrWhiteSpace(randomTracks[i].Track.Id))
{
tracks.Add(randomTracks[i].Track);
}
if (i % 100 == 0)
{
await SpotifyService.AddTracksToPlaylist(AuthenticationService.User, AuthenticationService.AuthenticationToken, currentPlaylist, tracks);
tracks.Clear();
}
}
await SpotifyService.AddTracksToPlaylist(AuthenticationService.User, AuthenticationService.AuthenticationToken, currentPlaylist, tracks);
}
catch (Exception ex)
{
PageException = ex;
}
foreach (var skippedTrack in listOfSkippedTracks)
{
randomTracks.Remove(skippedTrack);
}
listOfSkippedTracks.Reverse();
foreach (var skippedTrack in listOfSkippedTracks)
{
randomTracks.Insert(0, skippedTrack);
}
IsRandifying = false;
await BindPlaylistAfterSort(randomTracks);
}