import type { CartItemsResponse, Moltin as EPCCClient } from "@moltin/sdk";
import { Cart, CartIncluded, ResourceIncluded } from "@moltin/sdk";
import { getEpccImplicitClient } from "../lib/epcc-implicit-client";

export async function removeCartItem(
  id: string,
  itemId: string,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient()).Cart(id).RemoveItem(itemId);
}

export async function removeAllCartItems(
  id: string,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient()).Cart(id).RemoveAllItems();
}

export async function updateCartItem(
  id: string,
  productId: string,
  quantity: number,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient())
    .Cart(id)
    .UpdateItem(productId, quantity);
}

export async function addPromotion(
  id: string,
  promoCode: string,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient()).Cart(id).AddPromotion(promoCode);
}

export async function addProductToCart(
  cartId: string,
  productId: string,
  quantity: number,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient())
    .Cart(cartId)
    .AddProduct(productId, quantity);
}

export interface CustomItemRequest {
  type: "custom_item";
  name: string;
  quantity: number;
  price: {
    amount: number;
    includes_tax?: boolean;
  };
  sku?: string;
  description?: string;
  custom_inputs?: Record<string, any>;
}

export async function addCustomItemToCart(
  cartId: string,
  customItem: CustomItemRequest,
  client?: EPCCClient
): Promise<CartItemsResponse> {
  return (client ?? getEpccImplicitClient())
    .Cart(cartId)
    .AddCustomItem(customItem);
}

export async function getCart(
  cartId: string,
  client?: EPCCClient
): Promise<ResourceIncluded<Cart, CartIncluded>> {
  return (client ?? getEpccImplicitClient()).Cart(cartId).With("items").Get();
}