public void Handler(ApplyInterestCommand command)
{
if (command.Amount > 0)
{
var account = _context.Accounts.SingleOrDefault(x => x.AccountId == command.AccountId);
var dateDiff = Convert.ToDecimal((DateTime.Now - command.PreviousApplication).TotalDays);
int frequency = 365;
if (account.Frequency.ToLower() == "weekly")
{
frequency = 52;
}
else if (account.Frequency.ToLower() == "monthly")
{
frequency = 12;
}
var percent = command.Amount / 100;
var interest = Convert.ToDouble(1 + (percent / frequency));
var balance = Math.Abs(account.Balance * Convert.ToDecimal(Math.Pow(interest, frequency)));
_context.SaveChanges();
var transaction = new CreateTransactionCommand {
Account = account, Amount = balance, Operation = "Compound interest"
};
var handler = new CreateTransactionHandler(transaction);
}
else
{
throw new NegativeAmountException();
}
}
public async Task Handler(WithdrawCommand command)
{
var account = _context.Accounts.SingleOrDefault(x => x.AccountId == command.AccountId);
account.Balance -= command.Amount;
var transaction = new CreateTransactionCommand()
{
Operation = "Withdraw in cash",
Account = account,
Amount = command.Amount
};
var handler = new CreateTransactionHandler(transaction);
await _context.SaveChangesAsync();
}