feat: Implement create flow rest API endpoint

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

@@ -0,0 +1,11 @@
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  let flow = await request.currentUser.$relatedQuery('flows').insert({
+    name: 'Name your flow',
+  });
+
+  flow = await flow.createInitialSteps();
+
+  renderObject(response, flow, { status: 201 });
+};

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

@@ -0,0 +1,41 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+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 createFlowMock from '../../../../../test/mocks/rest/api/v1/flows/create-flow.js';
+import { createPermission } from '../../../../../test/factories/permission.js';
+
+describe('POST /api/v1/flows', () => {
+  let currentUser, currentUserRole, token;
+
+  beforeEach(async () => {
+    currentUser = await createUser();
+    currentUserRole = await currentUser.$relatedQuery('role');
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should return created flow', async () => {
+    await createPermission({
+      action: 'create',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    const response = await request(app)
+      .post('/api/v1/flows')
+      .set('Authorization', token)
+      .expect(201);
+
+    const refetchedFlow = await currentUser
+      .$relatedQuery('flows')
+      .findById(response.body.data.id);
+
+    const expectedPayload = await createFlowMock(refetchedFlow);
+
+    expect(response.body).toMatchObject(expectedPayload);
+  });
+});