fix(medusa): Default sales channel on product create (#3249)

What:
Assign the default sales channel if none is provided while creating a new product.


FIXES: CORE-1114

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/medusa/src/api/routes/admin/products/__tests__/create-product.js

@@ -3,6 +3,7 @@ import { request } from "../../../../../helpers/test-request"
 import { ProductServiceMock } from "../../../../../services/__mocks__/product"
 import { ProductVariantServiceMock } from "../../../../../services/__mocks__/product-variant"
 import { ShippingProfileServiceMock } from "../../../../../services/__mocks__/shipping-profile"
+import { SalesChannelServiceMock } from "../../../../../services/__mocks__/sales-channel"
 
 describe("POST /admin/products", () => {
   describe("successful creation with variants", () => {
@@ -46,6 +47,7 @@ describe("POST /admin/products", () => {
     })
 
     it("returns 200", () => {
+      expect(SalesChannelServiceMock.retrieveDefault).toHaveBeenCalledTimes(1)
       expect(subject.status).toEqual(200)
     })
 
@@ -114,6 +116,13 @@ describe("POST /admin/products", () => {
         is_giftcard: false,
         options: [{ title: "Denominations" }],
         profile_id: IdMap.getId("default_shipping_profile"),
+        sales_channels: [
+          {
+            description: "sales channel 1 description",
+            is_disabled: false,
+            name: "sales channel 1 name",
+          },
+        ],
       })
     })
 
@@ -173,6 +182,13 @@ describe("POST /admin/products", () => {
         is_giftcard: true,
         status: "draft",
         profile_id: IdMap.getId("giftCardProfile"),
+        sales_channels: [
+          {
+            description: "sales channel 1 description",
+            is_disabled: false,
+            name: "sales channel 1 name",
+          },
+        ],
       })
     })
 

packages/medusa/src/api/routes/admin/products/create-product.ts

@@ -14,6 +14,7 @@ import {
   ProductService,
   ProductVariantInventoryService,
   ProductVariantService,
+  SalesChannelService,
   ShippingProfileService,
 } from "../../../../services"
 import {
@@ -121,6 +122,10 @@ export default async (req, res) => {
   const inventoryService: IInventoryService | undefined =
     req.scope.resolve("inventoryService")
 
+  const salesChannelService: SalesChannelService = req.scope.resolve(
+    "salesChannelService"
+  )
+
   const entityManager: EntityManager = req.scope.resolve("manager")
 
   const newProduct = await entityManager.transaction(async (manager) => {
@@ -143,6 +148,14 @@ export default async (req, res) => {
         .retrieveDefault()
     }
 
+    // If no sales channel available, set the default one
+    if (!validated?.sales_channels?.length) {
+      const defaultSalesChannel = await salesChannelService
+        .withTransaction(manager)
+        .retrieveDefault()
+      validated.sales_channels = [defaultSalesChannel]
+    }
+
     const newProduct = await productService
       .withTransaction(manager)
       .create({ ...validated, profile_id: shippingProfile.id })