interface OrderItem {
  price: number;
  quantity: number;
}

function calculateSubtotal(total: number, discount: number) {
  return total-discount;
  }

export function calculateOrderDiscount(orderItem: OrderItem[], member: string): number {
  let total = 0;
  let discount = 0;

  const MIM_VALUE_ORDER = 10;
  const MIM_VALUE_RETURN = -1;

  const GOLD_MEMBER_TYPE = "gold";
  const BIG_ORDER_LIMIT = 100;
  const GOLD_MAX_DISCOUNT = 0.20;
  const GOLD_MIN_DISCOUNT = 0.10;

  const SILVER_MEMBER_TYPE = "silver";
  const SILVER_MAX_DISCOUNT = 0.10;
  const SILVER_MIN_DISCOUNT = 0.05;

  // Sumar el total de todos los items del pedido
  for (let indice = 0; indice < orderItem.length; indice++) {
    total = total + orderItem[indice].price * orderItem[indice].quantity;
  }

  // Verificar si el pedido cumple el mínimo requerido
  if (total < MIM_VALUE_ORDER) return MIM_VALUE_RETURN;


  // Aplicar descuento según el tipo de membresía y el monto total
  if (member === GOLD_MEMBER_TYPE) {
    // Pedidos grandes reciben mayor descuento
    if (total >= BIG_ORDER_LIMIT) {
      discount = total * GOLD_MAX_DISCOUNT;
    } else {
      discount = total * GOLD_MIN_DISCOUNT;
    }
  } else if (member === SILVER_MEMBER_TYPE) {
    // Pedidos grandes reciben mayor descuento
    if (total >= BIG_ORDER_LIMIT) {
      discount = total * SILVER_MAX_DISCOUNT;
    } else {
      discount = total * SILVER_MIN_DISCOUNT;
    }
  }

  return calculateSubtotal(total,discount);
}