feat(medusa): Nested Categories Admin Update Endpoint (#2986)

What:

Introduces an admin endpoint that allows a user to update a product category

Why:

This is part of a greater goal of allowing products to be added to multiple categories.

How:

- Creates a route on the admin scope to update category
- Creates a method in product category services to update a category

RESOLVES CORE-956

packages/medusa/src/api/routes/admin/product-categories/index.ts

@@ -1,6 +1,9 @@
 import { Router } from "express"
 
-import middlewares, { transformQuery, transformBody } from "../../../middlewares"
+import middlewares, {
+  transformQuery,
+  transformBody,
+} from "../../../middlewares"
 import { isFeatureFlagEnabled } from "../../../middlewares/feature-flag-enabled"
 import deleteProductCategory from "./delete-product-category"
 
@@ -17,6 +20,11 @@ import createProductCategory, {
   AdminPostProductCategoriesParams,
 } from "./create-product-category"
 
+import updateProductCategory, {
+  AdminPostProductCategoriesCategoryReq,
+  AdminPostProductCategoriesCategoryParams,
+} from "./update-product-category"
+
 const route = Router()
 
 export default (app) => {
@@ -56,6 +64,17 @@ export default (app) => {
     middlewares.wrap(getProductCategory)
   )
 
+  route.post(
+    "/:id",
+    transformQuery(AdminPostProductCategoriesCategoryParams, {
+      defaultFields: defaultProductCategoryFields,
+      defaultRelations: defaultAdminProductCategoryRelations,
+      isList: false,
+    }),
+    transformBody(AdminPostProductCategoriesCategoryReq),
+    middlewares.wrap(updateProductCategory)
+  )
+
   route.delete("/:id", middlewares.wrap(deleteProductCategory))
 
   return app

packages/medusa/src/api/routes/admin/product-categories/update-product-category.ts

@@ -0,0 +1,125 @@
+import { IsOptional, IsString } from "class-validator"
+import { Request, Response } from "express"
+import { EntityManager } from "typeorm"
+
+import { ProductCategoryService } from "../../../../services"
+import { AdminProductCategoriesReqBase } from "../../../../types/product-category"
+import { FindParams } from "../../../../types/common"
+/**
+ * @oas [post] /product-categories/{id}
+ * operationId: "PostProductCategoriesCategory"
+ * summary: "Update a Product Category"
+ * description: "Updates a Product Category."
+ * x-authenticated: true
+ * parameters:
+ *   - (path) id=* {string} The ID of the Product Category.
+ *   - (query) expand {string} (Comma separated) Which fields should be expanded in each product category.
+ *   - (query) fields {string} (Comma separated) Which fields should be retrieved in each product category.
+ * requestBody:
+ *   content:
+ *     application/json:
+ *       schema:
+ *         $ref: "#/components/schemas/AdminPostProductCategoriesCategoryReq"
+ * x-codeSamples:
+ *   - lang: JavaScript
+ *     label: JS Client
+ *     source: |
+ *       import Medusa from "@medusajs/medusa-js"
+ *       const medusa = new Medusa({ baseUrl: MEDUSA_BACKEND_URL, maxRetries: 3 })
+ *       // must be previously logged in or use api token
+ *       medusa.admin.productCategories.update(categoryId, {
+ *         name: 'Skinny Jeans'
+ *       })
+ *       .then(({ productCategory }) => {
+ *         console.log(productCategory.id);
+ *       });
+ *   - lang: Shell
+ *     label: cURL
+ *     source: |
+ *       curl --location --request POST 'https://medusa-url.com/admin/product-categories/{id}' \
+ *       --header 'Authorization: Bearer {api_token}' \
+ *       --header 'Content-Type: application/json' \
+ *       --data-raw '{
+ *           "name": "Skinny Jeans"
+ *       }'
+ * security:
+ *   - api_token: []
+ *   - cookie_auth: []
+ * tags:
+ *   - Product Category
+ * responses:
+ *  "200":
+ *    description: OK
+ *    content:
+ *      application/json:
+ *        schema:
+ *          type: object
+ *          properties:
+ *            productCategory:
+ *              $ref: "#/components/schemas/ProductCategory"
+ *  "400":
+ *    $ref: "#/components/responses/400_error"
+ *  "401":
+ *    $ref: "#/components/responses/unauthorized"
+ *  "404":
+ *    $ref: "#/components/responses/not_found_error"
+ *  "409":
+ *    $ref: "#/components/responses/invalid_state_error"
+ *  "422":
+ *    $ref: "#/components/responses/invalid_request_error"
+ *  "500":
+ *    $ref: "#/components/responses/500_error"
+ */
+export default async (req: Request, res: Response) => {
+  const { id } = req.params
+  const { validatedBody } = req as {
+    validatedBody: AdminPostProductCategoriesCategoryReq
+  }
+
+  const productCategoryService: ProductCategoryService = req.scope.resolve(
+    "productCategoryService"
+  )
+
+  const manager: EntityManager = req.scope.resolve("manager")
+  const updated = await manager.transaction(async (transactionManager) => {
+    return await productCategoryService
+      .withTransaction(transactionManager)
+      .update(id, validatedBody)
+  })
+
+  const productCategory = await productCategoryService.retrieve(
+    updated.id,
+    req.retrieveConfig,
+  )
+
+  res.status(200).json({ product_category: productCategory })
+}
+
+/**
+ * @schema AdminPostProductCategoriesCategoryReq
+ * type: object
+ * properties:
+ *   name:
+ *     type: string
+ *     description:  The name to identify the Product Category by.
+ *   handle:
+ *     type: string
+ *     description:  A handle to be used in slugs.
+ *   is_internal:
+ *     type: boolean
+ *     description: A flag to make product category an internal category for admins
+ *   is_active:
+ *     type: boolean
+ *     description: A flag to make product category visible/hidden in the store front
+ *   parent_category_id:
+ *     type: string
+ *     description: The ID of the parent product category
+ */
+// eslint-disable-next-line max-len
+export class AdminPostProductCategoriesCategoryReq extends AdminProductCategoriesReqBase {
+  @IsString()
+  @IsOptional()
+  name?: string
+}
+
+export class AdminPostProductCategoriesCategoryParams extends FindParams {}

packages/medusa/src/services/__tests__/product-category.ts

@@ -180,4 +180,50 @@ describe("ProductCategoryService", () => {
       )
     })
   })
+
+  describe("update", () => {
+    const productCategoryRepository = MockRepository({
+      findOne: query => {
+        if (query.where.id === IdMap.getId(invalidProdCategoryId)) {
+          return null
+        }
+
+        return Promise.resolve({ id: IdMap.getId(validProdCategoryId) })
+      },
+      findDescendantsTree: (productCategory) => {
+        return Promise.resolve(productCategory)
+      },
+    })
+
+    const productCategoryService = new ProductCategoryService({
+      manager: MockManager,
+      productCategoryRepository,
+    })
+
+    beforeEach(async () => {
+      jest.clearAllMocks()
+    })
+
+    it("successfully updates a product category", async () => {
+      await productCategoryService.update(IdMap.getId(validProdCategoryId), {
+        name: "bathrobes",
+      })
+
+      expect(productCategoryRepository.save).toHaveBeenCalledTimes(1)
+      expect(productCategoryRepository.save).toHaveBeenCalledWith({
+        id: IdMap.getId(validProdCategoryId),
+        name: "bathrobes",
+      })
+    })
+
+    it("fails on not-found Id product category", async () => {
+      const error = await productCategoryService.update(IdMap.getId(invalidProdCategoryId), {
+        name: "bathrobes",
+      }).catch(e => e)
+
+      expect(error.message).toBe(
+        `ProductCategory with id: ${IdMap.getId(invalidProdCategoryId)} was not found`
+      )
+    })
+  })
 })

packages/medusa/src/services/product-category.ts

@@ -5,7 +5,10 @@ import { ProductCategory } from "../models"
 import { ProductCategoryRepository } from "../repositories/product-category"
 import { FindConfig, Selector, QuerySelector } from "../types/common"
 import { buildQuery } from "../utils"
-import { CreateProductCategoryInput } from "../types/product-category"
+import {
+  CreateProductCategoryInput,
+  UpdateProductCategoryInput,
+} from "../types/product-category"
 
 type InjectedDependencies = {
   manager: EntityManager
@@ -116,6 +119,33 @@ class ProductCategoryService extends TransactionBaseService {
     })
   }
 
+  /**
+   * Updates a product category
+   * @param productCategoryId - id of product category to update
+   * @param productCategoryInput - parameters to update in product category
+   * @return updated product category
+   */
+  async update(
+    productCategoryId: string,
+    productCategoryInput: UpdateProductCategoryInput
+  ): Promise<ProductCategory> {
+    return await this.atomicPhase_(async (manager) => {
+      const productCategoryRepo = manager.getCustomRepository(
+        this.productCategoryRepo_
+      )
+
+      const productCategory = await this.retrieve(productCategoryId)
+
+      for (const key in productCategoryInput) {
+        if (isDefined(productCategoryInput[key])) {
+          productCategory[key] = productCategoryInput[key]
+        }
+      }
+
+      return await productCategoryRepo.save(productCategory)
+    })
+  }
+
   /**
    * Deletes a product category
    *

packages/medusa/src/types/product-category.ts

@@ -9,6 +9,14 @@ export type CreateProductCategoryInput = {
   parent_category_id?: string | null
 }
 
+export type UpdateProductCategoryInput = {
+  name?: string
+  handle?: string
+  is_internal?: boolean
+  is_active?: boolean
+  parent_category_id?: string | null
+}
+
 export class AdminProductCategoriesReqBase {
   @IsOptional()
   @IsString()