SDownload.Framework.Streams.SCTrackStream.Validate C# (CSharp) Method

        public override async Task<bool> Validate()
        {
            var valid = false;
            var retry = false;
            SFile file = null;
            try
            {
                // Test if the file is a valid mp3
                file = SFile.Create(MainResource.AbsolutePath);
            }
            catch (CorruptFileException) // File isn't mp3
            {
                try
                {
                    // Check if the file is wma
                    var old = MainResource.AbsolutePath;
                    MainResource.AbsolutePath = MainResource.AbsolutePath.Substring(0,
                                                                                    MainResource.AbsolutePath.Length - 3) + "wma";
                    File.Move(old, MainResource.AbsolutePath);
                    file = SFile.Create(MainResource.AbsolutePath);
                }
                catch (CorruptFileException e) // File isn't any supported type
                {
                    File.Delete(MainResource.AbsolutePath);

                    // If manual has already been attempted, this isn't possible
                    retry = !_forceManual;

                    if (!retry)
                    {
                        View.Report("Error!", true);
                        CrashHandler.Throw("Unable to download a valid song format for editing!", e);
                    }
                }
            }
            finally
            {
                if (file != null)
                {
                    valid = true;
                    file.Dispose();
                }
            }

            // Retry the download if necessary
            if (retry)
                valid = await RetryDownload();

            return valid;
        }