public async Task Purchase(BuyRequestDTO buyRequestDto)
{
User user = await _context.User.FirstOrDefaultAsync(u => u.UserName == buyRequestDto.Username);
List <Book> books = _context.Book.Where(b => buyRequestDto.BookIds.Contains(b.Id)).ToList();
if (user == null || books == null)
{
throw new EntityInvalidationException("Gabim");
}
// Calculate the total price
int totalPrice = 0;
foreach (Book book in books)
{
totalPrice += book.Price;
}
// Generate the unique token identifier
string code = Guid.NewGuid().ToString("n").Substring(0, 12);
BuyRequest buyRequest = new BuyRequest
{
User = user,
Address = buyRequestDto.Address,
Date = DateTime.Now,
ExpireDate = DateTime.Now.AddDays(5),
Status = "PENDING",
BuyRequestTokenIdentifier = code
};
await _context.BuyRequest.AddAsync(buyRequest);
await _context.SaveChangesAsync();
// Associating books to the BookBuyRequest table with the current Request
foreach (Book book in books)
{
BookBuyRequest bookBuyRequest = new BookBuyRequest
{
Book = book,
BuyRequest = buyRequest
};
await _context.BookBuyRequests.AddAsync(bookBuyRequest);
}
// Generate QR code for the request
_QRServices.GenerateQRCode(code);
// Add points to the user
// More complex -> include a formula like this: nrOfBuys + (a parabola formula to avoid exponential growth) ## NEEDS RESTART
user.Points = (int)(totalPrice * 0.1);
await _context.SaveChangesAsync();
}
public async Task <ActionResult> Checkout([FromBody] BuyRequestDTO buyRequestDTO)
{
try
{
await _buyServices.Purchase(buyRequestDTO);
return(Ok());
}
catch (ApplicationException ex)
{
return(BadRequest(new { message = ex.Message }));
}
}
