Added framework folder

framework/bigcommerce/api/cart/index.ts

@@ -0,0 +1,116 @@
+import isAllowedMethod from '../utils/is-allowed-method'
+import createApiHandler, {
+  BigcommerceApiHandler,
+  BigcommerceHandler,
+} from '../utils/create-api-handler'
+import { BigcommerceApiError } from '../utils/errors'
+import getCart from './handlers/get-cart'
+import addItem from './handlers/add-item'
+import updateItem from './handlers/update-item'
+import removeItem from './handlers/remove-item'
+
+type OptionSelections = {
+	option_id: Number
+	option_value: Number|String
+}
+
+export type ItemBody = {
+  productId: number
+  variantId: number
+	quantity?: number
+	optionSelections?: OptionSelections
+}
+
+export type AddItemBody = { item: ItemBody }
+
+export type UpdateItemBody = { itemId: string; item: ItemBody }
+
+export type RemoveItemBody = { itemId: string }
+
+// TODO: this type should match:
+// https://developer.bigcommerce.com/api-reference/cart-checkout/server-server-cart-api/cart/getacart#responses
+export type Cart = {
+  id: string
+  parent_id?: string
+  customer_id: number
+  email: string
+  currency: { code: string }
+  tax_included: boolean
+  base_amount: number
+  discount_amount: number
+  cart_amount: number
+  line_items: {
+    custom_items: any[]
+    digital_items: any[]
+    gift_certificates: any[]
+    physical_items: any[]
+  }
+  // TODO: add missing fields
+}
+
+export type CartHandlers = {
+  getCart: BigcommerceHandler<Cart, { cartId?: string }>
+  addItem: BigcommerceHandler<Cart, { cartId?: string } & Partial<AddItemBody>>
+  updateItem: BigcommerceHandler<
+    Cart,
+    { cartId?: string } & Partial<UpdateItemBody>
+  >
+  removeItem: BigcommerceHandler<
+    Cart,
+    { cartId?: string } & Partial<RemoveItemBody>
+  >
+}
+
+const METHODS = ['GET', 'POST', 'PUT', 'DELETE']
+
+// TODO: a complete implementation should have schema validation for `req.body`
+const cartApi: BigcommerceApiHandler<Cart, CartHandlers> = async (
+  req,
+  res,
+  config,
+  handlers
+) => {
+  if (!isAllowedMethod(req, res, METHODS)) return
+
+  const { cookies } = req
+  const cartId = cookies[config.cartCookie]
+
+  try {
+    // Return current cart info
+    if (req.method === 'GET') {
+      const body = { cartId }
+      return await handlers['getCart']({ req, res, config, body })
+    }
+
+    // Create or add an item to the cart
+    if (req.method === 'POST') {
+      const body = { ...req.body, cartId }
+      return await handlers['addItem']({ req, res, config, body })
+    }
+
+    // Update item in cart
+    if (req.method === 'PUT') {
+      const body = { ...req.body, cartId }
+      return await handlers['updateItem']({ req, res, config, body })
+    }
+
+    // Remove an item from the cart
+    if (req.method === 'DELETE') {
+      const body = { ...req.body, cartId }
+      return await handlers['removeItem']({ req, res, config, body })
+    }
+  } catch (error) {
+    console.error(error)
+
+    const message =
+      error instanceof BigcommerceApiError
+        ? 'An unexpected error ocurred with the Bigcommerce API'
+        : 'An unexpected error ocurred'
+
+    res.status(500).json({ data: null, errors: [{ message }] })
+  }
+}
+
+export const handlers = { getCart, addItem, updateItem, removeItem }
+
+export default createApiHandler(cartApi, handlers, {})