feat: Refund payment (#6610)

Essentially the same as #6601 but for refunds

packages/medusa/src/api-v2/admin/payments/[id]/refund/route.ts

@@ -0,0 +1,42 @@
+import { refundPaymentWorkflow } from "@medusajs/core-flows"
+import { Modules } from "@medusajs/modules-sdk"
+import {
+  ContainerRegistrationKeys,
+  remoteQueryObjectFromString,
+} from "@medusajs/utils"
+import {
+  AuthenticatedMedusaRequest,
+  MedusaResponse,
+} from "../../../../../types/routing"
+import { defaultAdminPaymentFields } from "../../query-config"
+
+export const POST = async (
+  req: AuthenticatedMedusaRequest,
+  res: MedusaResponse
+) => {
+  const remoteQuery = req.scope.resolve(ContainerRegistrationKeys.REMOTE_QUERY)
+
+  const { id } = req.params
+
+  const { errors } = await refundPaymentWorkflow(req.scope).run({
+    input: {
+      payment_id: id,
+      created_by: req.auth?.actor_id,
+    },
+    throwOnError: false,
+  })
+
+  if (Array.isArray(errors) && errors[0]) {
+    throw errors[0].error
+  }
+
+  const query = remoteQueryObjectFromString({
+    entryPoint: Modules.PAYMENT,
+    variables: { id },
+    fields: defaultAdminPaymentFields,
+  })
+
+  const [payment] = await remoteQuery(query)
+
+  res.status(200).json({ payment })
+}

packages/medusa/src/api-v2/admin/payments/middlewares.ts

@@ -35,10 +35,9 @@ export const adminPaymentRoutesMiddlewares: MiddlewareRoute[] = [
     matcher: "/admin/payments/:id/capture",
     middlewares: [],
   },
-  // TODO: Add in follow-up PR
-  // {
-  //   method: ["POST"],
-  //   matcher: "/admin/payments/:id/refund",
-  //   middlewares: [],
-  // },
+  {
+    method: ["POST"],
+    matcher: "/admin/payments/:id/refund",
+    middlewares: [],
+  },
 ]