/// <summary>
/// Will ask for the name or id of the playlist
/// Will then remove all the items in the playlist_track
/// And then remove the playlist
/// </summary>
public static void RemovePlaylist()
{
Console.WriteLine("\nEnter the playlist you would like to remove (PlaylistId or Name)");
string PlaylistName = Console.ReadLine();
int playlistID;
bool isNumber = Int32.TryParse(PlaylistName, out playlistID);
Playlist playlist = new Playlist();
PlaylistTrack playListTrack = new PlaylistTrack();
using (var context = new MusicContext())
{
if (isNumber)
{
playlist = context.Playlists.SingleOrDefault(
x => x.PlaylistId == playlistID);
}
else
{
playlist = context.Playlists.SingleOrDefault(
x => x.Name == PlaylistName);
}
if (playlist != null)
{
playListTrack = context.PlaylistTracks.Where(x => x.PlaylistId == playlist.PlaylistId).FirstOrDefault();
if (playListTrack != null)
{
context.Database.ExecuteSqlRaw("delete from music.playlist_track where PlaylistId={0}", playListTrack.PlaylistId);
context.SaveChanges();
}
context.Playlists.Remove(playlist);
context.SaveChanges();
Console.WriteLine("They have been successfully deleted");
}
else
{
Console.WriteLine("Could not find the playlist.\n");
}
}
}
/// <summary>
/// Will ask the user for trackids to remove form the list
/// </summary>
/// <param name="playlistInfo">Information about the playlist (Could be name or id)</param>
private static void ModifyRemove(string playlistInfo)
{
bool moreTracks = true;
List <int> trackList = new List <int>();
while (moreTracks)
{
Console.WriteLine("\nEnter the TrackId that you would like to remove \n(-1 to continue without removing more)");
int trackID;
bool isValid = true;
string Input = Console.ReadLine();
if (Input == "-1")
{
moreTracks = false;
}
foreach (char c in Input)
{
if (!Char.IsDigit(c))
{
isValid = false;
}
}
if (isValid)
{
trackID = Int32.Parse(Input);
trackList.Add(trackID);
}
}
//Checks if the playlistInfo is the name or the id.
int playlistID;
bool isNumber = Int32.TryParse(playlistInfo, out playlistID);
Playlist playlist = new Playlist();
PlaylistTrack playListTrack = new PlaylistTrack();
using (var context = new MusicContext())
{
if (isNumber)
{
playlist = context.Playlists.SingleOrDefault(
x => x.PlaylistId == playlistID);
}
else
{
playlist = context.Playlists.SingleOrDefault(
x => x.Name == playlistInfo);
}
foreach (var item in trackList)
{
playListTrack = context.PlaylistTracks.Where(x => x.PlaylistId == playlist.PlaylistId &&
x.TrackId == item).SingleOrDefault();
if (playListTrack != null)
{
context.Database.ExecuteSqlRaw("delete from music.playlist_track where TrackId={0}", playListTrack.TrackId);
context.SaveChanges();
}
}
Console.WriteLine("They have been successfully removed");
}
}
