/// <summary>
/// Checks the pin.
/// </summary>
/// <param name="pin">The pin.</param>
private async void CheckPin(IWrappedValue <string> pin)
{
var result = await _service.ValidatePin(_provider.GetBankCardNumber(), pin.Value);
_dispatcherAccessor.Dispatcher.Invoke(() =>
{
if (result)
{
// store entered value in context.
_provider.CurrentPin = pin.Value;
// reset entered value on UI
pin.Value = null;
// navigate to actions
_regionManager.RequestNavigate(RegionName.MainRegion, ViewName.ActionsView);
ErrorMessage = null;
}
else
{
ErrorMessage = "Invalid PIN";
}
});
}
/// <summary>
/// Requests the balance.
/// </summary>
private async void RequestBalance()
{
Balance = "Please wait for a while...";
var result = await _service.GetBalance(_provider.GetBankCardNumber(), _provider.CurrentPin);
_dispatcherAccessor.Dispatcher.Invoke(() => Balance = result);
}
/// <summary>
/// Changed the pin.
/// </summary>
/// <param name="newPin">The pin.</param>
private async void ChangePin(IWrappedValue <string> newPin)
{
if (string.IsNullOrWhiteSpace(newPin.Value) || newPin.Value.Length != 4)
{
ErrorMessage = "Invalid PIN code specified";
}
var result = await _service.ChangePin(_provider.GetBankCardNumber(), _provider.CurrentPin, newPin.Value);
_dispatcherAccessor.Dispatcher.Invoke(
() =>
{
if (result)
{
// store in context
_provider.CurrentPin = newPin.Value;
// reset on UI
newPin.Value = null;
// navigate to actions
_regionManager.RequestNavigate(RegionName.MainRegion, ViewName.ActionsView);
ErrorMessage = null;
newPin.Value = null;
}
else
{
ErrorMessage = "PIN was not changed.";
newPin.Value = null;
}
});
}
/// <summary>
/// Withdraws the specified cache.
/// </summary>
private async void Withdraw()
{
if (Amount <= 0)
{
ErrorMessage = "Please specify an amount";
Amount = 0;
return;
}
var errorMessage = await _service.Withdraw(_provider.GetBankCardNumber(), _provider.CurrentPin, Amount);
_dispatcherAccessor.Dispatcher.Invoke(() =>
{
if (!string.IsNullOrEmpty(errorMessage))
{
ErrorMessage = errorMessage;
Amount = 0;
}
else
{
// This is just to notify user of the application. Normally we should not show any message boxes,
// because hardware is reponsible for getting cache.
MessageBox.Show($"You have withdrown {Amount}. Now you will be redirected on the PIN screen.");
ErrorMessage = null;
Amount = 0;
GlobalCommands.FinishCommand.Execute(null);
}
});
}
