public async Task <IActionResult> RemoveCart(int bookID)
{
//Gets Current User.
var user = await _userManager.GetUserAsync(User);
var userID = user.Id;
//Removes cart item.
_cartService.RemoveItem(userID, bookID);
//Sees if User has an Order.
bool userHasCurrentOrder = _orderService.UserHasCurrentOrder(userID);
//If user has an order, we must delete the books from there as well.
if (userHasCurrentOrder)
{
//Removes all Order Book Connections in the current order(which is a copy of cart.)
var orderID = _orderService.GetCurrentOrderID(userID);
_obcService.RemoveItem((int)orderID, bookID);
}
//Redirects user back to the cart.
return(RedirectToAction("Cart", "Account"));
}