Feat/decline order edit (#2234)

**What**
- Decline an order edit from a store endpoint
- Refactor totals setting to a service method

Fixes CORE-502

packages/medusa-react/mocks/handlers/store.ts

@@ -69,6 +69,15 @@ export const storeHandlers = [
     )
   }),
 
+  rest.post("/store/order-edits/:id/decline", (req, res, ctx) => {
+    return res(
+      ctx.status(200),
+      ctx.json({
+        order_edit: {...fixtures.get("order_edit"), declined_reason: req.body.declined_reason, status: 'declined'},
+      })
+    )
+  }),
+
   rest.get("/store/orders/:id", (req, res, ctx) => {
     return res(
       ctx.status(200),

packages/medusa-react/src/hooks/store/order-edits/index.ts

@@ -1 +1,2 @@
 export * from "./queries"
+export * from './mutations'

packages/medusa-react/src/hooks/store/order-edits/mutations.ts

@@ -0,0 +1,33 @@
+import { useMutation, UseMutationOptions, useQueryClient } from "react-query"
+import { Response } from "@medusajs/medusa-js"
+
+import {
+  StorePostOrderEditsOrderEditDecline,
+  StoreOrderEditsRes
+} from "@medusajs/medusa"
+
+import { buildOptions } from "../../utils/buildOptions"
+import { useMedusa } from "../../../contexts"
+import { orderEditQueryKeys } from "."
+
+export const useDeclineOrderEdit = (
+  id: string,
+  options?: UseMutationOptions<
+    Response<StoreOrderEditsRes>,
+    Error,
+    StorePostOrderEditsOrderEditDecline
+  >
+) => {
+  const { client } = useMedusa()
+  const queryClient = useQueryClient()
+
+  return useMutation(
+    (payload: StorePostOrderEditsOrderEditDecline) =>
+      client.orderEdits.decline(id, payload),
+    buildOptions(
+      queryClient,
+      [orderEditQueryKeys.lists(), orderEditQueryKeys.detail(id)],
+      options
+    )
+  )
+}

packages/medusa-react/test/hooks/store/order-edits/mutations.test.ts

@@ -0,0 +1,30 @@
+import { useDeclineOrderEdit } from "../../../../src/"
+import { renderHook } from "@testing-library/react-hooks"
+import { createWrapper } from "../../../utils"
+
+describe("useCreateLineItem hook", () => {
+  test("creates a line item", async () => {
+    const declineBody = {
+      declined_reason: "Wrong color",
+    }
+
+    const { result, waitFor } = renderHook(
+      () => useDeclineOrderEdit("test-cart"),
+      {
+        wrapper: createWrapper(),
+      }
+    )
+
+    result.current.mutate(declineBody)
+
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.data.response.status).toEqual(200)
+    expect(result.current.data.order_edit).toEqual(
+      expect.objectContaining({
+        status: "declined",
+        ...declineBody,
+      })
+    )
+  })
+})