private async void Decrypt()
{
#region Validation
string stegoContainerFilePath = DropStegoContainerFileVM.FilePath;
if (!File.Exists(stegoContainerFilePath))
{
DropStegoContainerFileVM.IsValid = false;
StatusBarUCVM.UpdateState(text: "Stegocontainer file does not exist", state: AppState.Error);
return;
}
if (!_decryption.IsStegocontainerExtensionAllowed(stegoContainerFilePath))
{
DropStegoContainerFileVM.IsValid = false;
StatusBarUCVM.UpdateState(text: "Wrong stegocontainer file extension", state: AppState.Error);
return;
}
string outputPath = OutputPathVM.Path;
if (!Directory.Exists(outputPath))
{
OutputPathVM.IsValid = false;
StatusBarUCVM.UpdateState(text: "Output directory does not exist", state: AppState.Error);
return;
}
var password = _decryption.CreatePassword(PasswordVM.Password);
if (!password.IsValid())
{
PasswordVM.IsValid = false;
StatusBarUCVM.UpdateState(text: password.ValidationDescription, state: AppState.Error);
return;
}
#endregion
StatusBarUCVM.UpdateState(state: AppState.Working);
try
{
string filePath = await _decryption.Decrypt(stegoContainerFilePath, password, outputPath);
StatusBarUCVM.UpdateState(text: "Decryption has been successfully done. Secret file is located: ",
localFilePath: filePath, state: AppState.Neutral);
DropStegoContainerFileVM.IsValid = true;
PasswordVM.IsValid = true;
OutputPathVM.IsValid = true;
}
catch (Exception e) when(e is InvalidOperationException || e is ArgumentException)
{
StatusBarUCVM.UpdateState(text: e.Message, state: AppState.Error);
}
catch (Exception e)
{
StatusBarUCVM.UpdateState(text: "Something went wrong. Try again", state: AppState.Error);
}
}