public async Task <Invoice> AddCharge(Charge charge, User user)
{
Currency?chargeCurrency = charge?.GetCurrency();
int month = 0;
int year = 0;
if (!chargeCurrency.HasValue)
{
throw new InvalidEntityException(charge);
}
//Try to get month and year from charge event
if (charge.Event != null && charge.Event.Date != default(DateTime))
{
month = charge.Event.Date.Month;
year = charge.Event.Date.Year;
}
Invoice foundInvoice = await _invoiceRepository.FindAsync(x =>
x.User.Id == user.Id &&
x.Month == month &&
x.Year == year &&
x.Currency == chargeCurrency);
//If no invoice exists for this user/month/year combination
//create a new one
if (foundInvoice == null)
{
Invoice newInvoice = new Invoice(
month,
year,
chargeCurrency.Value,
user
);
newInvoice.AddCharge(charge);
if (newInvoice.IsValid())
{
return(_invoiceRepository.Insert(newInvoice));
}
else
{
throw new InvalidEntityException(newInvoice);
}
}
else
{
//If invoice was found, add charge
foundInvoice.AddCharge(charge);
if (foundInvoice.IsValid())
{
return(_invoiceRepository.Update(foundInvoice));
}
else
{
throw new InvalidEntityException(foundInvoice);
}
}
}
