feat(medusa): Add get inventory item endpoint (medusajs#6704)

* initial get-inventory-item

* add exception throw test

* remove console log

* add changeset

* remove unused import

.changeset/spicy-bats-knock.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+feat(medusa): add get-inventory-item endpoint to api v2

integration-tests/modules/__tests__/inventory/index.spec.ts

@@ -146,76 +146,6 @@ medusaIntegrationTestRunner({
         })
       })
 
-      it.skip("should retrieve the inventory item", async () => {
-        const inventoryItemId = inventoryItems[0].id
-
-        await api.post(
-          `/admin/inventory-items/${inventoryItemId}/location-levels`,
-          {
-            location_id: locationId,
-            stocked_quantity: 15,
-            incoming_quantity: 5,
-          },
-          adminHeaders
-        )
-
-        await api.post(
-          `/admin/inventory-items/${inventoryItemId}/location-levels`,
-          {
-            location_id: location2Id,
-            stocked_quantity: 7,
-            incoming_quantity: 0,
-          },
-          adminHeaders
-        )
-
-        const response = await api.get(
-          `/admin/inventory-items/${inventoryItemId}`,
-          adminHeaders
-        )
-
-        expect(response.data).toEqual({
-          inventory_item: expect.objectContaining({
-            height: 200,
-            hs_code: "hs001",
-            id: inventoryItemId,
-            length: 100,
-            location_levels: [
-              expect.objectContaining({
-                available_quantity: 15,
-                deleted_at: null,
-                id: expect.any(String),
-                incoming_quantity: 5,
-                inventory_item_id: inventoryItemId,
-                location_id: locationId,
-                metadata: null,
-                reserved_quantity: 0,
-                stocked_quantity: 15,
-              }),
-              expect.objectContaining({
-                available_quantity: 7,
-                deleted_at: null,
-                id: expect.any(String),
-                incoming_quantity: 0,
-                inventory_item_id: inventoryItemId,
-                location_id: location2Id,
-                metadata: null,
-                reserved_quantity: 0,
-                stocked_quantity: 7,
-              }),
-            ],
-            material: "material",
-            metadata: null,
-            mid_code: "mids",
-            origin_country: "UK",
-            requires_shipping: true,
-            sku: "MY_SKU",
-            weight: 300,
-            width: 150,
-          }),
-        })
-      })
-
       it.skip("should create the inventory item using the api", async () => {
         const product = await simpleProductFactory(dbConnection, {})
 
@@ -299,6 +229,103 @@ medusaIntegrationTestRunner({
         )
       })
 
+      describe("Retrieve inventory item", () => {
+        let location1 = "loc_1"
+        let location2 = "loc_2"
+        beforeEach(async () => {
+          await service.create([
+            {
+              sku: "MY_SKU",
+              origin_country: "UK",
+              hs_code: "hs001",
+              mid_code: "mids",
+              material: "material",
+              weight: 300,
+              length: 100,
+              height: 200,
+              width: 150,
+            },
+          ])
+        })
+
+        it("should retrieve the inventory item", async () => {
+          const [{ id: inventoryItemId }] = await service.list({})
+
+          await service.createInventoryLevels([
+            {
+              inventory_item_id: inventoryItemId,
+              location_id: location1,
+              stocked_quantity: 15,
+              incoming_quantity: 5,
+            },
+            {
+              inventory_item_id: inventoryItemId,
+              location_id: location2,
+              stocked_quantity: 7,
+              incoming_quantity: 0,
+              reserved_quantity: 1,
+            },
+          ])
+
+          const response = await api.get(
+            `/admin/inventory-items/${inventoryItemId}`,
+            adminHeaders
+          )
+
+          expect(response.data.inventory_item).toEqual(
+            expect.objectContaining({
+              id: inventoryItemId,
+              sku: "MY_SKU",
+              origin_country: "UK",
+              hs_code: "hs001",
+              material: "material",
+              mid_code: "mids",
+              requires_shipping: true,
+              weight: 300,
+              length: 100,
+              height: 200,
+              width: 150,
+              stocked_quantity: 22,
+              reserved_quantity: 1,
+              location_levels: [
+                expect.objectContaining({
+                  id: expect.any(String),
+                  inventory_item_id: inventoryItemId,
+                  location_id: location1,
+                  stocked_quantity: 15,
+                  reserved_quantity: 0,
+                  incoming_quantity: 5,
+                  available_quantity: 15,
+                  metadata: null,
+                }),
+                expect.objectContaining({
+                  id: expect.any(String),
+                  inventory_item_id: inventoryItemId,
+                  location_id: location2,
+                  stocked_quantity: 7,
+                  reserved_quantity: 1,
+                  incoming_quantity: 0,
+                  available_quantity: 6,
+                  metadata: null,
+                }),
+              ],
+            })
+          )
+        })
+
+        it("should throw if inventory item doesn't exist", async () => {
+          const error = await api
+            .get(`/admin/inventory-items/does-not-exist`, adminHeaders)
+            .catch((e) => e)
+
+          expect(error.response.status).toEqual(404)
+          expect(error.response.data).toEqual({
+            type: "not_found",
+            message: "Inventory item with id: does-not-exist was not found",
+          })
+        })
+      })
+
       describe.skip("Create inventory item level", () => {
         let location1
         let location2

packages/medusa/src/api-v2/admin/inventory-items/[id]/route.ts

@@ -0,0 +1,37 @@
+import {
+  ContainerRegistrationKeys,
+  MedusaError,
+  remoteQueryObjectFromString,
+} from "@medusajs/utils"
+import { MedusaRequest, MedusaResponse } from "../../../../types/routing"
+
+export const GET = async (req: MedusaRequest, res: MedusaResponse) => {
+  const { id } = req.params
+  const remoteQuery = req.scope.resolve(ContainerRegistrationKeys.REMOTE_QUERY)
+
+  const query = remoteQueryObjectFromString({
+    entryPoint: "inventory",
+    variables: {
+      filters: { id },
+      skip: 0,
+      take: 1,
+    },
+
+    fields: req.retrieveConfig.select as string[],
+  })
+
+  const { rows } = await remoteQuery(query)
+
+  const [inventory_item] = rows
+
+  if (!inventory_item) {
+    throw new MedusaError(
+      MedusaError.Types.NOT_FOUND,
+      `Inventory item with id: ${id} was not found`
+    )
+  }
+
+  res.status(200).json({
+    inventory_item,
+  })
+}

packages/medusa/src/api-v2/admin/inventory-items/middlewares.ts

@@ -27,6 +27,16 @@ export const adminInventoryRoutesMiddlewares: MiddlewareRoute[] = [
       ),
     ],
   },
+  {
+    method: ["GET"],
+    matcher: "/admin/inventory-items/:id",
+    middlewares: [
+      transformQuery(
+        AdminGetInventoryItemsItemParams,
+        QueryConfig.retrieveTransformQueryConfig
+      ),
+    ],
+  },
   {
     method: ["POST"],
     matcher: "/admin/inventory-items/:id/location-levels",