public void AddAmount(CurrencyEnum cur, double amount)
{
var curr = Currencies?.FirstOrDefault(c => c.Currency == cur);
if (curr == null)
{
if (Currencies == null)
{
Currencies = new List <CurrencyUser>();
}
curr = new CurrencyUser(this, amount, cur);
Currencies.Add(curr);
}
else
{
curr.Amount = curr.Amount += amount;
}
}
public void RemoveAmount(CurrencyEnum cur, double amount)
{
var curr = Currencies?.FirstOrDefault(c => c.Currency == cur);
if (curr == null)
{
if (Currencies == null)
{
Currencies = new List <CurrencyUser>();
}
curr = new CurrencyUser(this, 0, cur);
RemoveAmount(cur, amount);
}
if (curr.Amount < amount)
{
throw new WouldMakeCurrencyNegative();
}
curr.Amount = curr.Amount -= amount;
}
