public async Task <CreatePurchaseResult> BuyBook(AddPurchaseDto purchaseDto, CancellationToken cancellationToken)
{
var book = await context.Books.Include(x => x.Price).Include(x => x.Discount).Where(x => x.Id == purchaseDto.BookId).FirstOrDefaultAsync();
var customer = context.Customers.Find(purchaseDto.CustomerId);
if (customer == null)
{
return(new CreatePurchaseResult(ActionStatus.Failure, "Customer not found"));
}
if (book == null || customer == null)
{
return(new CreatePurchaseResult(ActionStatus.Failure, "Book not found"));
}
int?discountId = null;
if (book.Discount != null)
{
discountId = book.Discount.Id;
}
var purchase = new Purchase
(purchaseDto.BookId, purchaseDto.PurchaseTime, book.Price.Id, discountId, purchaseDto.CustomerId);
context.Purchases.Add(purchase);
await context.SaveChangesAsync();
var purchaseEvent = new PurchaseCreatedEvent(customer.Email, book.Name, book.Price);
await mediator.Publish(purchaseEvent, cancellationToken);
return(new CreatePurchaseResult(ActionStatus.Success, mapper.Map <PurchaseDto>(purchase)));
}
public async Task <AddBookActionResult> AddBook(AddBookDto bookDto, CancellationToken cancellationToken)
{
var authorsInDb = GetAuthors(bookDto.Authors);
var price = bookDto.Price.GetFromDataBase(context);
bookDto.AddToDatabase(context, price, authorsInDb.Authors);
int id = 0;
try
{
id = await context.SaveChangesAsync(cancellationToken);
}
catch (System.Exception ex)
{
return(new AddBookActionResult(ActionStatus.Failure, ex.Message));
}
if (id == 0)
{
return(new AddBookActionResult(ActionStatus.Failure, "Book not added in Database"));
}
return(new AddBookActionResult(ActionStatus.Success, new BookModel(bookDto, id)));
}