private async Task <string> aaxToM4bConverterDecrypt(string aaxFilename, LibraryBook libraryBook)
{
DecryptBegin?.Invoke(this, $"Begin decrypting {aaxFilename}");
try
{
using var persister = AudibleApiStorage.GetAccountsSettingsPersister();
var account = persister
.AccountsSettings
.GetAccount(libraryBook.Account, libraryBook.Book.Locale);
var converter = await AaxToM4bConverter.CreateAsync(aaxFilename, account.DecryptKey);
converter.AppName = "Libation";
TitleDiscovered?.Invoke(this, converter.tags.title);
AuthorsDiscovered?.Invoke(this, converter.tags.author);
NarratorsDiscovered?.Invoke(this, converter.tags.narrator);
CoverImageFilepathDiscovered?.Invoke(this, converter.coverBytes);
// override default which was set in CreateAsync
var proposedOutputFile = Path.Combine(AudibleFileStorage.DecryptInProgress, $"[{libraryBook.Book.AudibleProductId}].m4b");
converter.SetOutputFilename(proposedOutputFile);
converter.DecryptProgressUpdate += (s, progress) => UpdateProgress?.Invoke(this, progress);
// REAL WORK DONE HERE
var success = await Task.Run(() => converter.Run());
// decrypt failed
if (!success)
{
return(null);
}
account.DecryptKey = converter.decryptKey;
return(converter.outputFileName);
}
finally
{
DecryptCompleted?.Invoke(this, $"Completed decrypting {aaxFilename}");
}
}
private void aaxcDownloader_RetrievedTags(object sender, AAXClean.AppleTags e)
{
TitleDiscovered?.Invoke(this, e.TitleSansUnabridged);
AuthorsDiscovered?.Invoke(this, e.FirstAuthor ?? "[unknown]");
NarratorsDiscovered?.Invoke(this, e.Narrator ?? "[unknown]");
}
protected void OnTitleDiscovered(string title)
{
Serilog.Log.Logger.Debug("Event fired {@DebugInfo}", new { Name = nameof(TitleDiscovered), Title = title });
TitleDiscovered?.Invoke(this, title);
}