private Transfer.Type GetValidType(MoneyAccount destination)
{
if (AccountType == Type.Cash && destination.AccountType == Type.Debit)
{
return(Transfer.Type.Deposit);
}
switch (destination.AccountType)
{
case Type.Savings:
return(Transfer.Type.Saving);
case Type.Prepaid:
return(Transfer.Type.Recharge);
case Type.Credit:
return(Transfer.Type.Payment);
default:
{
if (AccountType == Type.Savings || AccountType == Type.Debit)
{
return(Transfer.Type.Withdrawal);
}
return(Transfer.Type.Unknown);
}
}
}
private void Validate(MoneyAccount destination)
{
var isNotAllowedSource = AccountType == Type.Credit || AccountType == Type.Prepaid;
var isNotAllowedForCredit = destination.AccountType == Type.Credit && AccountType != Type.Debit;
if (isNotAllowedSource || isNotAllowedForCredit)
{
throw new Exception($"{AccountType} to {destination.AccountType} is not valid.");
}
}
public Transfer TransferTo(MoneyAccount destination)
{
var transfer = new Transfer
{
Source = this,
Destination = destination
};
Validate(transfer.Destination);
transfer.TransferType = GetValidType(transfer.Destination);
return(transfer);
}
