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

* initial get-inventory-item

* add exception throw test

* remove console log

* add changeset

* remove unused import

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",