public async Task <IActionResult> Withdraw(int id, decimal amount)
{
Account account = await _context.Accounts.FindAsync(id);
if (amount < 0)
{
ModelState.AddModelError(nameof(amount), "Amount must not be lower than 0.");
}
if (amount.HasMoreThanTwoDecimalPlaces())
{
ModelState.AddModelError(nameof(amount), "Amount cannot have more than 2 decimal places.");
}
if (!ModelState.IsValid)
{
ViewBag.Amount = amount;
return(View(account));
}
ATMMediator.Withdraw(account, amount, ModelState);
if (!ModelState.IsValid)
{
return(View(account));
}
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
// Transfer method.
// actionOrigin parameter is used in case if there is another kind of transfer in the future. Ex: transfer between accounts
public async Task <IActionResult> Transfer(int id, int destinationAccountNumber, decimal amount, string comment, string actionOrigin)
{
Account account = await _context.Accounts.FindAsync(id);
Account destinationAccount = await _context.Accounts.FindAsync(destinationAccountNumber);
// input validation
if (amount < 0)
{
ModelState.AddModelError(nameof(amount), "Amount must not be lower than 0.");
}
if (amount.HasMoreThanTwoDecimalPlaces())
{
ModelState.AddModelError(nameof(amount), "Amount cannot have more than 2 decimal places.");
}
if (destinationAccount == null)
{
ModelState.AddModelError(nameof(destinationAccountNumber), "Account with this number is not found");
}
if (!ModelState.IsValid)
{
return(ReturnWithError());
}
// operation execution
ATMMediator.Transfer(account, destinationAccount, amount, comment, ModelState);
if (!ModelState.IsValid)
{
return(ReturnWithError());
}
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
// private method for repeatitive calling inside this method
IActionResult ReturnWithError()
{
ViewBag.DestinationAccountNumber = destinationAccountNumber;
ViewBag.Amount = amount;
ViewBag.Comment = comment;
return(View(actionOrigin, account));
}
}