Allow API operations to be more customizable

lib/bigcommerce/api/utils/create-api-handler.ts

@@ -1,23 +1,47 @@
 import type { NextApiHandler, NextApiRequest, NextApiResponse } from 'next'
 import { BigcommerceConfig, getConfig } from '..'
 
-export type BigcommerceApiHandler<T = any> = (
+export type BigcommerceApiHandler<
+  T = any,
+  H extends BigcommerceHandlers = {}
+> = (
   req: NextApiRequest,
   res: NextApiResponse<BigcommerceApiResponse<T>>,
-  config: BigcommerceConfig
+  config: BigcommerceConfig,
+  handlers: H
 ) => void | Promise<void>
 
+export type BigcommerceHandler<T = any, Body = any> = (options: {
+  req: NextApiRequest
+  res: NextApiResponse<BigcommerceApiResponse<T>>
+  config: BigcommerceConfig
+  body: Body
+}) => void | Promise<void>
+
+export type BigcommerceHandlers<T = any> = {
+  [k: string]: BigcommerceHandler<T, any>
+}
+
 export type BigcommerceApiResponse<T> = {
   data: T | null
   errors?: { message: string }[]
 }
 
-export default function createApiHandler(handler: BigcommerceApiHandler) {
+export default function createApiHandler<H extends BigcommerceHandlers>(
+  handler: BigcommerceApiHandler<any, H>,
+  handlers: H
+) {
   return function getApiHandler({
     config,
-  }: { config?: BigcommerceConfig } = {}): NextApiHandler {
+    operations,
+  }: {
+    config?: BigcommerceConfig
+    operations?: Partial<H>
+  } = {}): NextApiHandler {
+    const ops = { ...operations, ...handlers }
+
     return function apiHandler(req, res) {
-      return handler(req, res, getConfig(config))
+      return handler(req, res, getConfig(config), ops)
     }
   }
 }