/**
 * Checkout Domain - Contract
 *
 * Business constants and helpers for the checkout flow.
 */

// Re-export ORDER_TYPE from orders domain for convenience
export { ORDER_TYPE, type OrderTypeValue } from "../orders/contract.js";

/**
 * Checkout-specific order types (subset of ORDER_TYPE, excludes "Other")
 * These are the types that can be ordered through checkout.
 */
export const CHECKOUT_ORDER_TYPE = {
  INTERNET: "Internet",
  SIM: "SIM",
  VPN: "VPN",
} as const;

export type CheckoutOrderTypeValue = (typeof CHECKOUT_ORDER_TYPE)[keyof typeof CHECKOUT_ORDER_TYPE];

/**
 * Convert legacy uppercase order type to PascalCase
 * Used for migrating old localStorage data
 */
export function normalizeOrderType(value: unknown): CheckoutOrderTypeValue | null {
  if (typeof value !== "string") return null;

  const upper = value.trim().toUpperCase();
  switch (upper) {
    case "INTERNET":
      return "Internet";
    case "SIM":
      return "SIM";
    case "VPN":
      return "VPN";
    default:
      return null;
  }
}

// Re-export types from schema
export type { OrderType, PriceBreakdownItem, CartItem } from "./schema.js";