Update Swell Provider (#359)

* fix update cart item

* update types

* update checkout

* update get-page, cleanup types

* revert change to incorrect file

* cleanup

Co-authored-by: Greg Hoskin <greghoskin@Gregs-MacBook-Pro.local>

framework/swell/api/endpoints/checkout/index.ts

@@ -0,0 +1,30 @@
+import { CommerceAPI, createEndpoint, GetAPISchema } from '@commerce/api'
+import { CheckoutSchema } from '@commerce/types/checkout'
+import { SWELL_CHECKOUT_URL_COOKIE } from '../../../const'
+import checkoutEndpoint from '@commerce/api/endpoints/checkout'
+
+const checkout: CheckoutEndpoint['handlers']['checkout'] = async ({
+  req,
+  res,
+  config,
+}) => {
+  const { cookies } = req
+  const checkoutUrl = cookies[SWELL_CHECKOUT_URL_COOKIE]
+
+  if (checkoutUrl) {
+    res.redirect(checkoutUrl)
+  } else {
+    res.redirect('/cart')
+  }
+}
+export const handlers: CheckoutEndpoint['handlers'] = { checkout }
+
+export type CheckoutAPI = GetAPISchema<CommerceAPI, CheckoutSchema>
+export type CheckoutEndpoint = CheckoutAPI['endpoint']
+
+const checkoutApi = createEndpoint<CheckoutAPI>({
+  handler: checkoutEndpoint,
+  handlers,
+})
+
+export default checkoutApi