feat: Implement create flow from template id

packages/backend/src/controllers/api/v1/flows/create-flow.js

@@ -1,7 +1,11 @@
 import { renderObject } from '../../../../helpers/renderer.js';
 
 export default async (request, response) => {
-  const flow = await request.currentUser.createEmptyFlow();
+  const { templateId } = request.query;
+
+  const flow = templateId
+    ? await request.currentUser.createFlowFromTemplate(templateId)
+    : await request.currentUser.createEmptyFlow();
 
   renderObject(response, flow, { status: 201 });
 };

packages/backend/src/controllers/api/v1/flows/create-flow.test.js

@@ -4,6 +4,7 @@ import request from 'supertest';
 import app from '../../../../app.js';
 import createAuthTokenByUserId from '../../../../helpers/create-auth-token-by-user-id.js';
 import { createUser } from '../../../../../test/factories/user.js';
+import { createTemplate } from '../../../../../test/factories/template.js';
 import createFlowMock from '../../../../../test/mocks/rest/api/v1/flows/create-flow.js';
 import { createPermission } from '../../../../../test/factories/permission.js';
 
@@ -17,7 +18,7 @@ describe('POST /api/v1/flows', () => {
     token = await createAuthTokenByUserId(currentUser.id);
   });
 
-  it('should return created flow', async () => {
+  it('should create an empty flow when no templateId is provided', async () => {
     await createPermission({
       action: 'create',
       subject: 'Flow',
@@ -38,4 +39,25 @@ describe('POST /api/v1/flows', () => {
 
     expect(response.body).toMatchObject(expectedPayload);
   });
+
+  it('should create a flow from template when templateId is provided', async () => {
+    await createPermission({
+      action: 'create',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    const template = await createTemplate({
+      name: 'Sample template',
+    });
+
+    const response = await request(app)
+      .post('/api/v1/flows')
+      .query({ templateId: template.id })
+      .set('Authorization', token)
+      .expect(201);
+
+    expect(response.body.data.name).toBe(template.flowData.name);
+  });
 });