public ActionResult ConfirmCart(CartDto cart)
{
// check for second submission
if (Session[CartKey] == null)
{
TempData["ErrorMessage"] = "Already submitted this cart; invoice has already been generated";
return RedirectToAction("DisplayCart");
}
// dropping cart reference here to prevent double submission
Session[CartKey] = null;
if (cart.Rows == null || cart.Rows.Count == 0)
{
TempData["ErrorMessage"] = "Submitted an empty cart";
return View("EditCart", GetOrInitCartFromSession());
}
var invoiceFile = Service.ConfirmCart(cart);
var encoding = Encoding.UTF8;
var bytes = invoiceFile.FileRows.SelectMany(row => encoding.GetBytes(row + Environment.NewLine)).ToArray();
var contentDisposition = new System.Net.Mime.ContentDisposition
{
FileName = string.Format("Invoice{0}.csv", invoiceFile.InvoiceNumber),
Inline = false
};
Response.AppendHeader("Content-Disposition", contentDisposition.ToString());
return File(bytes, contentDisposition.ToString());
}
public InvoiceFileDto ConfirmCart(CartDto cart)
{
InvoiceFileDto fileDto;
using (var context = new DalContext())
{
var invoice = SaveInvoice(cart, context);
// if code wont call this DbSet, all lazy requests for InvoiceRow.Equipment property will return null
var equipments = context.Equipments.ToList();
var fees = context.Fees.ToDictionary(f => f.Type, f => f);
fileDto = PrepareInvoiceFile(invoice, fees);
}
return fileDto;
}
public InvoiceFileDto ConfirmCart(CartDto cart)
{
var message = new Message();
message.Type = MessageType.ConfirmCart;
message.Data = cart;
var response = SendAndReceiveMessage(message);
var invoiceFile = response.Data as InvoiceFileDto;
if (invoiceFile == null)
throw new BackendUnexpectedResponseDataException();
return invoiceFile;
}
private static Invoice SaveInvoice(CartDto cart, DalContext context)
{
var invoice = new Invoice();
invoice.Customer = cart.CustomerName;
invoice.Date = DateTime.Now;
invoice.Rows = cart.Rows.Select(cr => GetInvoiceRow(cr, invoice)).ToList();
var lastId = GetLastInvoiceId(context);
invoice.Number = string.Format("#{0:D6}", lastId + 1);
context.Invoices.Add(invoice);
context.SaveChanges();
invoice = context.Invoices.Single(inv => inv.Id == invoice.Id);
return invoice;
}
private CartDto GetOrInitCartFromSession()
{
CartDto cart;
if (Session[CartKey] == null)
{
cart = new CartDto();
cart.Rows = new List<CartRowDto>();
Session[CartKey] = cart;
}
else
cart = (CartDto)Session[CartKey];
return cart;
}