feat: Implement admin delete template API endpoint

packages/backend/src/controllers/api/v1/admin/templates/delete-template.ee.js

@@ -0,0 +1,11 @@
+import Template from '../../../../../models/template.ee.js';
+
+export default async (request, response) => {
+  const template = await Template.query()
+    .findById(request.params.templateId)
+    .throwIfNotFound();
+
+  await template.$query().delete();
+
+  response.status(204).end();
+};

packages/backend/src/controllers/api/v1/admin/templates/delete-template.ee.test.js

@@ -0,0 +1,51 @@
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import Crypto from 'crypto';
+import app from '../../../../../app.js';
+import createAuthTokenByUserId from '../../../../../helpers/create-auth-token-by-user-id.js';
+import { createRole } from '../../../../../../test/factories/role.js';
+import { createUser } from '../../../../../../test/factories/user.js';
+import { createTemplate } from '../../../../../../test/factories/template.js';
+import Template from '../../../../../models/template.ee.js';
+import * as license from '../../../../../helpers/license.ee.js';
+
+describe('DELETE /api/v1/admin/templates/:templateId', () => {
+  let currentUser, token, role;
+
+  beforeEach(async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    role = await createRole({ name: 'Admin' });
+    currentUser = await createUser({ roleId: role.id });
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should delete the template', async () => {
+    const template = await createTemplate();
+
+    await request(app)
+      .delete(`/api/v1/admin/templates/${template.id}`)
+      .set('Authorization', token)
+      .expect(204);
+
+    const deletedTemplate = await Template.query().findById(template.id);
+    expect(deletedTemplate).toBeUndefined();
+  });
+
+  it('should return not found response for not existing template UUID', async () => {
+    const notExistingTemplateUUID = Crypto.randomUUID();
+
+    await request(app)
+      .delete(`/api/v1/admin/templates/${notExistingTemplateUUID}`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await request(app)
+      .delete('/api/v1/admin/templates/invalidTemplateUUID')
+      .set('Authorization', token)
+      .expect(400);
+  });
+});