protected override void OnNavigatedFrom(NavigationEventArgs e)
{
ViewModel.OnNavigatedFrom();
MediaControl.Content = null;
MessagePlayerControl.Stop();
if (e.Uri == _externalUri)
{
_fromExternalUri = true;
}
else
{
_fromExternalUri = false;
}
base.OnNavigatedFrom(e);
}
public void Handle(DownloadableItem item)
{
var webPage = item.Owner as TLWebPage;
if (webPage != null)
{
Execute.BeginOnUIThread(() =>
{
var messages = UngroupEnumerator(Items).OfType <TLDecryptedMessage>();
foreach (var m in messages)
{
var media = m.Media as TLDecryptedMessageMediaWebPage;
if (media != null && media.WebPage == webPage)
{
media.NotifyOfPropertyChange(() => media.Photo);
media.NotifyOfPropertyChange(() => media.Self);
break;
}
}
});
}
var decryptedMessage = item.Owner as TLDecryptedMessage;
if (decryptedMessage != null)
{
var mediaExternalDocument = decryptedMessage.Media as TLDecryptedMessageMediaExternalDocument;
if (mediaExternalDocument != null)
{
decryptedMessage.NotifyOfPropertyChange(() => decryptedMessage.Self);
}
}
var decryptedMedia = item.Owner as TLDecryptedMessageMediaBase;
if (decryptedMedia != null)
{
decryptedMessage = UngroupEnumerator(Items).OfType <TLDecryptedMessage>().FirstOrDefault(x => x.Media == decryptedMedia);
if (decryptedMessage != null)
{
var mediaPhoto = decryptedMessage.Media as TLDecryptedMessageMediaPhoto;
if (mediaPhoto != null)
{
mediaPhoto.DownloadingProgress = 1.0;
var fileName = item.IsoFileName;
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaPhoto.Key.Data,
mediaPhoto.IV.Data, false);
var newFileName = String.Format("{0}_{1}_{2}.jpg",
fileLocation.Id,
fileLocation.DCId,
fileLocation.AccessHash);
using (var file = store.OpenFile(newFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
if (!decryptedMedia.IsCanceled)
{
decryptedMedia.NotifyOfPropertyChange(() => decryptedMedia.Self);
}
}
var mediaVideo = decryptedMessage.Media as TLDecryptedMessageMediaVideo;
if (mediaVideo != null)
{
mediaVideo.DownloadingProgress = 1.0;
var fileName = item.IsoFileName;
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaVideo.Key.Data, mediaVideo.IV.Data, false);
var newFileName = String.Format("{0}_{1}_{2}.mp4",
fileLocation.Id,
fileLocation.DCId,
fileLocation.AccessHash);
using (var file = store.OpenFile(newFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
}
var mediaDocument = decryptedMessage.Media as TLDecryptedMessageMediaDocument;
if (mediaDocument != null)
{
if (decryptedMessage.IsVoice())
{
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var fileName = item.IsoFileName;
var decryptedFileName = String.Format("audio{0}_{1}.mp3",
fileLocation.Id,
fileLocation.AccessHash);
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaDocument.Key.Data, mediaDocument.IV.Data, false);
using (var file = store.OpenFile(decryptedFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
Telegram.Api.Helpers.Execute.BeginOnUIThread(() =>
{
MessagePlayerControl.ConvertAndSaveOpusToWav(mediaDocument);
mediaDocument.DownloadingProgress = 1.0;
});
}
else if (decryptedMessage.IsVideo())
{
mediaDocument.DownloadingProgress = 1.0;
var fileName = item.IsoFileName;
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaDocument.Key.Data, mediaDocument.IV.Data, false);
var newFileName = String.Format("{0}_{1}_{2}.mp4",
fileLocation.Id,
fileLocation.DCId,
fileLocation.AccessHash);
using (var file = store.OpenFile(newFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
}
else
{
mediaDocument.DownloadingProgress = 1.0;
var fileName = item.IsoFileName;
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaDocument.Key.Data, mediaDocument.IV.Data, false);
var newFileName = String.Format("{0}_{1}_{2}.{3}",
fileLocation.Id,
fileLocation.DCId,
fileLocation.AccessHash,
fileLocation.FileExt ?? mediaDocument.FileExt);
using (var file = store.OpenFile(newFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
}
}
var mediaAudio = decryptedMessage.Media as TLDecryptedMessageMediaAudio;
if (mediaAudio != null)
{
var fileLocation = decryptedMessage.Media.File as TLEncryptedFile;
if (fileLocation == null)
{
return;
}
var fileName = item.IsoFileName;
var decryptedFileName = String.Format("audio{0}_{1}.mp3",
fileLocation.Id,
fileLocation.AccessHash);
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
byte[] buffer;
using (var file = store.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
buffer = new byte[file.Length];
file.Read(buffer, 0, buffer.Length);
}
var decryptedBuffer = Telegram.Api.Helpers.Utils.AesIge(buffer, mediaAudio.Key.Data, mediaAudio.IV.Data, false);
using (var file = store.OpenFile(decryptedFileName, FileMode.OpenOrCreate, FileAccess.Write))
{
file.Write(decryptedBuffer, 0, decryptedBuffer.Length);
}
store.DeleteFile(fileName);
}
Telegram.Api.Helpers.Execute.BeginOnUIThread(() =>
{
MessagePlayerControl.ConvertAndSaveOpusToWav(mediaAudio);
mediaAudio.DownloadingProgress = 1.0;
});
}
}
}
}
