// Compare saved playlists(from local PC) and current playlists(from Spotify) and saves the result set to 'compareResults' list.
private async void Compare_Playlists()
{
List <PlaylistTrack> compareResult = new List <PlaylistTrack>(); // For tracks
List <Playlist_Full> compareResults = new List <Playlist_Full>(); // For playlists
// Get saved playlists from documents
bool result = await GetSavedPlaylists();
// If there is a saved playlists and if Spotify playlists are taken from server.
if (result && fullPlaylists.Count > 0)
{
// Loop through each plasylist taken from spotify web API and compare if this playlist saved before.
foreach (Playlist_Full newPlaylist in fullPlaylists)
{
Playlist_Full savedPlaylist = savedPlaylists.Find(pList => pList.id == newPlaylist.id);
if (savedPlaylist == null)
{
continue;
}
compareResult = Compare_PlaylistTracks(newPlaylist.trackList, savedPlaylist.trackList);
compareResults.Add(new Playlist_Full(new Playlist_Simplified(newPlaylist.id, newPlaylist.name + " -CompareResult", newPlaylist.tracks), compareResult));
}
}
CompareResults = compareResults;
}
// Gets the saved playlist's from directory, converts them to 'Playlist_Full' objects and puts 'savedPlaylists' list.
private async Task <bool> GetSavedPlaylists()
{
IsProgressing = true;
// Clearing the savedPlaylists list to prevent appending.
savedPlaylists.Clear();
string path_myDocuments = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string folderName = "SpotifyPlaylists";
// Get all paths inside directory.
string[] filePaths = Directory.GetFiles(Path.Combine(path_myDocuments, folderName), "*.json", SearchOption.TopDirectoryOnly);
// Loop through all .json files, converts from .json to 'Playlist_Full' objects then adds to 'savedPlaylists' list.
for (int i = 0; i < filePaths.Length; i++)
{
string jsonText = File.ReadAllText(filePaths[i]);
Playlist_Full playlist = JsonConvert.DeserializeObject <Playlist_Full>(jsonText);
savedPlaylists.Add(playlist);
}
IsProgressing = false;
return(true);
}
