feat(api): add get folders endpoint for users

packages/backend/src/controllers/api/v1/users/get-folders.ee.js

@@ -0,0 +1,12 @@
+import User from '../../../../models/user.js';
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  const user = await User.query()
+    .findById(request.params.userId)
+    .throwIfNotFound();
+
+  const folders = await user.$relatedQuery('folders').orderBy('name', 'asc');
+
+  renderObject(response, folders, { serializer: 'Folder' });
+};

packages/backend/src/controllers/api/v1/users/get-folders.ee.test.js

@@ -0,0 +1,75 @@
+import Crypto from 'node:crypto';
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import app from '../../../../app.js';
+import { createApiToken } from '../../../../../test/factories/api-token.js';
+import { createUser } from '../../../../../test/factories/user.js';
+import { createFolder } from '../../../../../test/factories/folder.js';
+import getFoldersMock from '../../../../../test/mocks/rest/api/v1/folders/get-folders.js';
+import * as license from '../../../../helpers/license.ee.js';
+
+describe('GET /api/v1/users/:userId/folders', () => {
+  let folderA, folderB, currentUser, token;
+
+  beforeEach(async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    currentUser = await createUser();
+
+    folderA = await createFolder({
+      name: 'Folder A',
+      userId: currentUser.id,
+    });
+
+    folderB = await createFolder({
+      name: 'Folder B',
+      userId: currentUser.id,
+    });
+
+    await createFolder({
+      name: 'Folder C',
+    });
+
+    token = (await createApiToken()).token;
+  });
+
+  it('should return folders of the given user', async () => {
+    const response = await request(app)
+      .get(`/api/v1/users/${currentUser.id}/folders`)
+      .set('x-api-token', token)
+      .expect(200);
+
+    const expectedPayload = await getFoldersMock([folderA, folderB]);
+
+    expect(response.body).toStrictEqual(expectedPayload);
+  });
+
+  it('should respond with HTTP 404 for non-existent user', async () => {
+    const notExistingUserId = Crypto.randomUUID();
+
+    await request(app)
+      .get(`/api/v1/users/${notExistingUserId}/folders`)
+      .set('x-api-token', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid user UUID', async () => {
+    await request(app)
+      .get(`/api/v1/users/invalidUserUUID/folders`)
+      .set('x-api-token', token)
+      .expect(400);
+  });
+
+  it('should respond with HTTP 404 for no folders of the given user', async () => {
+    const user = await createUser();
+
+    const response = await request(app)
+      .get(`/api/v1/users/${user.id}/folders`)
+      .set('x-api-token', token)
+      .expect(200);
+
+    const expectedPayload = await getFoldersMock([]);
+
+    expect(response.body).toStrictEqual(expectedPayload);
+  });
+});