In the Model folder we will create some manager objects that will be used as singletons in our app
MenuManager
class MenuManager {
var menu: [Category] = []
}
CartManager
class CartManager {
var products: [(Product, Int)] = []
func add(product: Product, quantity: Int) {
products.append((product, quantity))
}
func remove(product: Product) {
products.removeAll { productInCart in
productInCart.0.id == product.id
}
}
func clear() {
products.removeAll()
}
func total() -> Double {
var total = 0.0
for item in products {
total += item.0.price * Double(item.1)
}
return total
}
}