public bool BuyProduct(UserDTO user, int productId, int amount)
{
ProductDTO foundProduct = productDAO.GetProduct(productId);
if (foundProduct.stock < amount)
{
return(false);
}
if (user.saldo < foundProduct.price * amount)
{
return(false);
}
// Update stock
foundProduct.stock -= amount;
productDAO.UpdateProduct(foundProduct);
// Update user saldo and add product to inventory
user.saldo -= foundProduct.price * amount;
// Update user saldo
userDAO.UpdateUser(user);
// Add new row to user inventory
userDAO.AddInventoryItem(user, new InventoryDTO {
product = foundProduct, amount = amount
});
return(true);
}
