commerce/framework/reactioncommerce/api/cart/handlers/add-item.ts

import type { CartHandlers } from '..'
import {
  addCartItemsMutation,
  checkoutCreateMutation,
} from '@framework/utils/mutations'
import getCartCookie from '@framework/api/utils/get-cart-cookie'
import {
  REACTION_ANONYMOUS_CART_TOKEN_COOKIE,
  REACTION_CART_ID_COOKIE,
} from '@framework/const'

const addItem: CartHandlers['addItem'] = async ({
  req: {
    cookies: {
      [REACTION_ANONYMOUS_CART_TOKEN_COOKIE]: anonymousCartToken,
      [REACTION_CART_ID_COOKIE]: cartId,
    },
  },
  res,
  body: { item },
  config,
}) => {
  console.log('add-item API', item.productId)
  console.log('variantId', item.variantId)

  if (!item) {
    return res.status(400).json({
      data: null,
      errors: [{ message: 'Missing item' }],
    })
  }
  if (!item.quantity) item.quantity = 1

  if (cartId === config.dummyEmptyCartId) {
    const createdCart = await config.fetch(checkoutCreateMutation, {
      variables: {
        input: {
          shopId: config.shopId,
          items: [
            {
              productConfiguration: {
                productId: item.productId,
                productVariantId: item.variantId,
              },
              quantity: item.quantity,
              price: item.pricing,
            },
          ],
        },
      },
    })

    console.log('cart token', createdCart.data.createCart.token)
    console.log('created cart', createdCart.data.createCart.cart)

    res.setHeader('Set-Cookie', [
      getCartCookie(config.cartCookie, createdCart.data.createCart.token, 999),
      getCartCookie(
        config.cartIdCookie,
        createdCart.data.createCart.cart._id,
        999
      ),
    ])
    return res.status(200).json(createdCart.data)
  } else if (cartId && anonymousCartToken) {
    const updatedCart = await config.fetch(addCartItemsMutation, {
      variables: {
        input: {
          cartId,
          cartToken: anonymousCartToken,
          items: [
            {
              productConfiguration: {
                productId: item.productId,
                productVariantId: item.variantId,
              },
              quantity: item.quantity,
              price: item.pricing,
            },
          ],
        },
      },
    })

    console.log('updatedCart', updatedCart)

    return res.status(200).json(updatedCart.data)
  }

  res.status(200)
}

export default addItem