feat(medusa, medusa-js, medusa-react): Implement Sales Channel list (#1815)

**What**
Support sales channel list in medusa, medusa-js and medusa-react

**How**

By implementing a new endpoint and the associated service method as well as the repository methods.

Medusa-js new list method in the resource

Medusa-react new hook in the queries

**Tests**

Endpoint test
Service test
Integration test
Hook tests

Fixes CORE-280

packages/medusa-react/mocks/data/fixtures.json

@@ -1270,6 +1270,15 @@
       "updated_at": "2022-07-05T15:16:01.959Z",
       "created_at": "2022-07-05T15:16:01.959Z",
       "deleted_at": null
-    }
+    },
+    "sales_channels": [{
+      "id": "sc_01F0YES4R67TXXC1QBQ8P54A8Y",
+      "name": "sales channel 1 name",
+      "description": "sales channel 1 description",
+      "is_disabled": false,
+      "updated_at": "2022-07-05T15:16:01.959Z",
+      "created_at": "2022-07-05T15:16:01.959Z",
+      "deleted_at": null
+    }]
   }
 }

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

@@ -1682,6 +1682,18 @@ export const adminHandlers = [
     )
   }),
 
+  rest.get("/admin/sales-channels", (req, res, ctx) => {
+    return res(
+      ctx.status(200),
+      ctx.json({
+        count: 1,
+        limit: 20,
+        offset: 20,
+        sales_channels: fixtures.get("sales_channels"),
+      })
+    )
+  }),
+
   rest.post("/admin/sales-channels/:id", (req, res, ctx) => {
     return res(
       ctx.status(200),

packages/medusa-react/src/hooks/admin/sales-channels/queries.ts

@@ -1,4 +1,8 @@
-import { AdminSalesChannelsRes } from "@medusajs/medusa"
+import {
+  AdminSalesChannelsRes,
+  AdminSalesChannelsListRes,
+  AdminGetSalesChannelsParams,
+} from "@medusajs/medusa"
 import { Response } from "@medusajs/medusa-js"
 import { useQuery } from "react-query"
 import { useMedusa } from "../../../contexts"
@@ -36,21 +40,26 @@ export const useAdminSalesChannel = (
   return { ...data, ...rest } as const
 }
 
-/*
+/**
+ * retrieve a list of sales channels
+ * @experimental This feature is under development and may change in the future.
+ * To use this feature please enable feature flag `sales_channels` in your medusa backend project.
+ * @description Retrieve a list of sales channel
+ * @returns a list of sales channel as well as the pagination properties
+ */
 export const useAdminSalesChannels = (
   query?: AdminGetSalesChannelsParams,
   options?: UseQueryOptionsWrapper<
-    Response<AdminProductsListRes>,
+    Response<AdminSalesChannelsListRes>,
     Error,
     ReturnType<SalesChannelsQueryKeys["list"]>
   >
 ) => {
   const { client } = useMedusa()
   const { data, ...rest } = useQuery(
-    adminProductKeys.list(query),
+    adminSalesChannelsKeys.list(query),
     () => client.admin.salesChannels.list(query),
     options
   )
   return { ...data, ...rest } as const
 }
-*/

packages/medusa-react/test/hooks/admin/sales-channels/queries.test.ts

@@ -1,10 +1,10 @@
-import { useAdminSalesChannel } from "../../../../src"
+import { useAdminSalesChannel, useAdminSalesChannels } from "../../../../src"
 import { renderHook } from "@testing-library/react-hooks"
 import { fixtures } from "../../../../mocks/data"
 import { createWrapper } from "../../../utils"
 
 describe("useAdminSalesChannel hook", () => {
-  test("returns a product", async () => {
+  test("returns a sales channel", async () => {
     const salesChannel = fixtures.get("sales_channel")
     const { result, waitFor } = renderHook(
       () => useAdminSalesChannel(salesChannel.id),
@@ -19,3 +19,17 @@ describe("useAdminSalesChannel hook", () => {
     expect(result.current.sales_channel).toEqual(salesChannel)
   })
 })
+
+describe("useAdminSalesChannels hook", () => {
+  test("returns a list of sales channels", async () => {
+    const salesChannels = fixtures.get("sales_channels")
+    const { result, waitFor } = renderHook(() => useAdminSalesChannels(), {
+      wrapper: createWrapper(),
+    })
+
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.response.status).toEqual(200)
+    expect(result.current.sales_channels).toEqual(salesChannels)
+  })
+})