ApplyCouponToCart

import { getNormalizers } from "@alokai/connect/integration-kit";
import { HttpStatusCode } from "@alokai/connect/middleware";

import { defineApi, getCartId, query } from "@vsf-enterprise/unified-api-magento";
import type { Cart } from "@vsf-enterprise/unified-api-magento/ecommerceTypes";

export const applyCouponToCart = defineApi.applyCouponToCart(async (context, args) => {
  const { api } = await context.getApiClient();
  if (args?.cartId != null) {
    throw context.createHttpError({
      message: "Multiple carts feature is not available.",
      statusCode: HttpStatusCode.FORBIDDEN,
    });
  }
  const cartId = getCartId(context);
  const { normalizeCart } = getNormalizers(context);

  if (!args.couponCode) {
    throw context.createHttpError({
      message: "The provided coupon code is empty and cannot be applied.",
      statusCode: HttpStatusCode.BAD_REQUEST,
    });
  }

  const data = await query(
    api.applyCouponToCart({ cart_id: cartId, coupon_code: args.couponCode }),
  );

  return normalizeCart(data.applyCouponToCart?.cart as Cart);
});