Feat(medusa, medusa-js, medusa-react): order edit item update (#2246)

**what**
Support `updateLineItem` which does the following:
- If no item change exist then create a new one and attaches the clone item with the adjustments and tax lines
- if an item change exists then delete/create adjustments and tax lines and update the cloned item quantity

**Tests**
- Unit tests core + client
- integration tests
  - When no item change already exists
  - When an item change already exists

FIXES CORE-497

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

@@ -1712,7 +1712,7 @@ export const adminHandlers = [
         order_edit: {
           ...fixtures.get("order_edit"),
           requested_at: new Date(),
-          status: "requested"
+          status: "requested",
         },
       })
     )
@@ -1742,6 +1742,22 @@ export const adminHandlers = [
     )
   }),
 
+  rest.post("/admin/order-edits/:id/items/:item_id", (req, res, ctx) => {
+    return res(
+      ctx.status(200),
+      ctx.json({
+        order_edit: {
+          ...fixtures.get("order_edit"),
+          changes: [
+            {
+              quantity: (req.body as any).quantity,
+            },
+          ],
+        },
+      })
+    )
+  }),
+
   rest.get("/admin/auth", (req, res, ctx) => {
     return res(
       ctx.status(200),

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

@@ -5,6 +5,7 @@ import {
   AdminOrderEditDeleteRes,
   AdminOrderEditItemChangeDeleteRes,
   AdminOrderEditsRes,
+  AdminPostOrderEditsEditLineItemsLineItemReq,
   AdminPostOrderEditsOrderEditReq,
   AdminPostOrderEditsReq,
 } from "@medusajs/medusa"
@@ -68,6 +69,29 @@ export const useAdminDeleteOrderEditItemChange = (
   )
 }
 
+export const useAdminOrderEditUpdateLineItem = (
+  orderEditId: string,
+  itemId: string,
+  options?: UseMutationOptions<
+    Response<AdminOrderEditsRes>,
+    Error,
+    AdminPostOrderEditsEditLineItemsLineItemReq
+  >
+) => {
+  const { client } = useMedusa()
+  const queryClient = useQueryClient()
+
+  return useMutation(
+    (payload: AdminPostOrderEditsEditLineItemsLineItemReq) =>
+      client.admin.orderEdits.updateLineItem(orderEditId, itemId, payload),
+    buildOptions(
+      queryClient,
+      [adminOrderEditsKeys.detail(orderEditId), adminOrderEditsKeys.lists()],
+      options
+    )
+  )
+}
+
 export const useAdminUpdateOrderEdit = (
   id: string,
   options?: UseMutationOptions<

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

@@ -1,15 +1,44 @@
 import { renderHook } from "@testing-library/react-hooks"
 import {
+  useAdminCancelOrderEdit,
   useAdminCreateOrderEdit,
   useAdminDeleteOrderEdit,
   useAdminDeleteOrderEditItemChange,
-  useAdminUpdateOrderEdit,
+  useAdminOrderEditUpdateLineItem,
   useAdminRequestOrderEditConfirmation,
-  useAdminCancelOrderEdit,
+  useAdminUpdateOrderEdit,
 } from "../../../../src/"
 import { fixtures } from "../../../../mocks/data"
 import { createWrapper } from "../../../utils"
 
+describe("useAdminOrderEditUpdateLineItem hook", () => {
+  test("Update line item of an order edit and create or update an item change", async () => {
+    const id = "oe_1"
+    const itemId = "item_1"
+    const { result, waitFor } = renderHook(
+      () => useAdminOrderEditUpdateLineItem(id, itemId),
+      {
+        wrapper: createWrapper(),
+      }
+    )
+
+    result.current.mutate({ quantity: 3 })
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.data.response.status).toEqual(200)
+    expect(result.current.data.order_edit).toEqual(
+      expect.objectContaining({
+        ...fixtures.get("order_edit"),
+        changes: expect.arrayContaining([
+          expect.objectContaining({
+            quantity: 3,
+          }),
+        ]),
+      })
+    )
+  })
+})
+
 describe("useAdminDeleteOrderEditItemChange hook", () => {
   test("Deletes an order edit item change", async () => {
     const id = "oe_1"
@@ -112,9 +141,12 @@ describe("useAdminCreateOrderEdit hook", () => {
 
 describe("useAdminRequestOrderEditConfirmation hook", () => {
   test("Requests an order edit", async () => {
-    const { result, waitFor } = renderHook(() => useAdminRequestOrderEditConfirmation(fixtures.get("order_edit").id), {
-      wrapper: createWrapper(),
-    })
+    const { result, waitFor } = renderHook(
+      () => useAdminRequestOrderEditConfirmation(fixtures.get("order_edit").id),
+      {
+        wrapper: createWrapper(),
+      }
+    )
 
     result.current.mutate()
 
@@ -123,9 +155,9 @@ describe("useAdminRequestOrderEditConfirmation hook", () => {
     expect(result.current.data.response.status).toEqual(200)
     expect(result.current.data?.order_edit).toEqual(
       expect.objectContaining({
-          ...fixtures.get("order_edit"),
-          requested_at: expect.any(String),
-          status: 'requested'
+        ...fixtures.get("order_edit"),
+        requested_at: expect.any(String),
+        status: "requested",
       })
     )
   })
@@ -133,10 +165,12 @@ describe("useAdminRequestOrderEditConfirmation hook", () => {
 
 describe("useAdminCancelOrderEdit hook", () => {
   test("cancel an order edit", async () => {
-
-    const { result, waitFor } = renderHook(() => useAdminCancelOrderEdit(fixtures.get("order_edit").id), {
-      wrapper: createWrapper(),
-    })
+    const { result, waitFor } = renderHook(
+      () => useAdminCancelOrderEdit(fixtures.get("order_edit").id),
+      {
+        wrapper: createWrapper(),
+      }
+    )
 
     result.current.mutate()
 
@@ -148,7 +182,7 @@ describe("useAdminCancelOrderEdit hook", () => {
         order_edit: {
           ...fixtures.get("order_edit"),
           canceled_at: expect.any(String),
-          status: 'canceled'
+          status: "canceled",
         },
       })
     )