public Task <ApiResponse <CreatePlaylistFromListResponse> > CreatePlaylistFromList(CreatePlaylistFromListRequest request) =>
this.PostJson <CreatePlaylistFromListResponse>("api/Playlists/CreateFromList", request);
public async Task <ApiResponse <CreatePlaylistFromListResponse> > CreateFromList([FromBody] CreatePlaylistFromListRequest request)
{
Playlist playlist;
var currentSongIds = new HashSet <int>();
var lastOrder = 0;
if (request.Id == 0)
{
if (string.IsNullOrWhiteSpace(request.Name))
{
return(this.Error <CreatePlaylistFromListResponse>(
"Name",
"Please select the name of your new playlist."));
}
var name = request.Name.Trim();
if (this.playlistsRepository.All().Any(x => x.Name == name && x.OwnerId == this.User.GetId()))
{
return(this.Error <CreatePlaylistFromListResponse>(
"Name",
"You already have playlist with that name. Please select a different name."));
}
playlist = new Playlist {
Name = name, IsSystem = false, OwnerId = this.User.GetId()
};
this.playlistsRepository.Add(playlist);
}
else
{
playlist = this.playlistsRepository.All()
.FirstOrDefault(x => x.Id == request.Id && x.OwnerId == this.User.GetId());
if (playlist == null)
{
return(this.Error <CreatePlaylistFromListResponse>(
"Id",
"Playlist not found."));
}
currentSongIds = this.playlistsRepository.All().Where(x => x.Id == request.Id)
.SelectMany(x => x.Songs.Select(s => s.SongId)).ToList().ToHashSet();
if (currentSongIds.Count > 0)
{
lastOrder = this.playlistsRepository.All().Where(x => x.Id == request.Id)
.Max(x => x.Songs.Max(s => s.Order));
}
}
foreach (var songId in request.SongIds)
{
if (!currentSongIds.Contains(songId))
{
playlist.Songs.Add(new PlaylistSong {
SongId = songId, Order = ++lastOrder
});
currentSongIds.Add(songId);
}
}
await this.playlistsRepository.SaveChangesAsync();
var response = new CreatePlaylistFromListResponse();
return(response.ToApiResponse());
}
