public async Task <ActionResult <Cart> > PostCart(CartPostModel NewItem)
{
//Kiem tra hop le
if (!ModelState.IsValid)
{
return(Ok(new { error_message = "Loi gio hang" }));
}
//Kiem tra sach co ton tai
Book book = await _bookServices.GetBookById(NewItem.BookId);
if (book is null)
{
return(Ok(new { error_message = "Sach khong ton tai" }));
}
//Kiem tra so luong
if (book.Quantity <= 0)
{
return(Ok(new { error_message = "Sach da het so luong" }));
}
//Kiem tra so luong ton
if (book.Quantity - NewItem.Amount <= 0)
{
return(Ok(new { error_message = "So luong sach con lai trong kho chi con " + NewItem.Amount }));
}
Cart CurrentCart = await _cartServices.FindAsync(NewItem);
if (CurrentCart is not null)
{
if (NewItem.Amount <= 0)
{
List <Cart> carts = await _cartServices.DeleteCartById(CurrentCart);
return(Ok(new { data = carts, success = true }));
}
//Cap nhat lai gio hang
CurrentCart.Amount += NewItem.Amount;
CurrentCart.SubTotal = CurrentCart.Amount * book.Price;
if (await _cartServices.UpdateAsync(CurrentCart))
{
return(Ok(new { data = await _cartServices.GetCartFromUser(NewItem.UserId), success = true }));
}
else
{
return(Ok(new { error_message = "Co loi khi cap nhat gio hang" }));
}
}
else
{
if (NewItem.Amount <= 0)
{
return(Ok(new { error_message = "So luong sach khong hop le" }));
}
Cart cart = new Cart
{
UserId = NewItem.UserId,
BookId = NewItem.BookId,
Amount = NewItem.Amount,
SubTotal = NewItem.Amount * book.Price
};
if (await _cartServices.AddNewCartAsync(cart))
{
return(Ok(new { data = await _cartServices.GetCartFromUser(NewItem.UserId), success = true }));
}
else
{
return(Ok(new { error_message = "Loi them gio hang" }));
}
}
//return CreatedAtAction("GetCart", new { id = cart.Id }, cart);
}
