public IActionResult InvoicesForAccounts(string accountNumber)
{
var parsedAccountNumber = new AccountNumberTemplate(accountNumber);
if (!parsedAccountNumber.IsValid())
{
return(BadRequest("Account Number is invalid"));
}
var invoices = _invoiceManager.GetInvoicesForAccount(parsedAccountNumber);
var response = new List <InvoiceBasic>();
foreach (var invoice in invoices)
{
var flattenedInvoices = _responseGenerator.GenerateBasicInvoices(invoice);
response = response.Concat(flattenedInvoices).ToList();
}
return(Ok(response));
}