feat(api): add get flow endpoint

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

@@ -0,0 +1,12 @@
+import Flow from '../../../../models/flow.js';
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  const flow = await Flow.query()
+    .withGraphJoined({ steps: true })
+    .orderBy('steps.position', 'asc')
+    .findOne({ 'flows.id': request.params.flowId })
+    .throwIfNotFound();
+
+  renderObject(response, flow);
+};

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

@@ -0,0 +1,50 @@
+import Crypto from 'node:crypto';
+import request from 'supertest';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { createApiToken } from '../../../../../test/factories/api-token.js';
+import { createFlow } from '../../../../../test/factories/flow.js';
+import { createStep } from '../../../../../test/factories/step.js';
+import getFlowMock from '../../../../../test/mocks/rest/api/v1/flows/get-flow.js';
+import app from '../../../../app.js';
+import * as license from '../../../../helpers/license.ee.js';
+
+describe('GET /api/v1/flows/:flowId', () => {
+  let token;
+
+  beforeEach(async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    token = (await createApiToken()).token;
+  });
+
+  it('should return the flow data', async () => {
+    const flow = await createFlow();
+    const triggerStep = await createStep({ flowId: flow.id });
+    const actionStep = await createStep({ flowId: flow.id });
+
+    const response = await request(app)
+      .get(`/api/v1/flows/${flow.id}`)
+      .set('x-api-token', token)
+      .expect(200);
+
+    const expectedPayload = await getFlowMock(flow, [triggerStep, actionStep]);
+
+    expect(response.body).toStrictEqual(expectedPayload);
+  });
+
+  it('should return not found response for not existing flow UUID', async () => {
+    const notExistingFlowUUID = Crypto.randomUUID();
+
+    await request(app)
+      .get(`/api/v1/flows/${notExistingFlowUUID}`)
+      .set('x-api-token', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await request(app)
+      .get('/api/v1/flows/invalidFlowUUID')
+      .set('x-api-token', token)
+      .expect(400);
+  });
+});

packages/backend/src/routes/api/index.js

@@ -1,12 +1,14 @@
 import { Router } from 'express';
 import appsRouter from './v1/apps.ee.js';
 import executionsRouter from './v1/executions.ee.js';
+import flowsRouter from './v1/flows.ee.js';
 import foldersRouter from './v1/folders.ee.js';
 import usersRouter from './v1/users.ee.js';
 
 const router = Router();
 
 router.use('/v1/apps', appsRouter);
+router.use('/v1/flows', flowsRouter);
 router.use('/v1/executions', executionsRouter);
 router.use('/v1/folders', foldersRouter);
 router.use('/v1/users', usersRouter);

packages/backend/src/routes/api/v1/flows.ee.js

@@ -0,0 +1,8 @@
+import { Router } from 'express';
+import getFlowAction from '../../../controllers/api/v1/flows/get-flow.ee.js';
+
+const router = Router();
+
+router.get('/:flowId', getFlowAction);
+
+export default router;

packages/backend/test/mocks/rest/api/v1/flows/get-flow.js

@@ -0,0 +1,38 @@
+const getFlowMock = async (flow, steps = []) => {
+  const data = {
+    active: flow.active,
+    id: flow.id,
+    name: flow.name,
+    status: flow.active ? 'published' : 'draft',
+    createdAt: flow.createdAt.getTime(),
+    updatedAt: flow.updatedAt.getTime(),
+  };
+
+  if (steps.length) {
+    data.steps = steps.map((step) => ({
+      appKey: step.appKey,
+      iconUrl: step.iconUrl,
+      id: step.id,
+      key: step.key,
+      name: step.name,
+      parameters: step.parameters,
+      position: step.position,
+      status: step.status,
+      type: step.type,
+      webhookUrl: step.webhookUrl,
+    }));
+  }
+
+  return {
+    data: data,
+    meta: {
+      count: 1,
+      currentPage: null,
+      isArray: false,
+      totalPages: null,
+      type: 'Flow',
+    },
+  };
+};
+
+export default getFlowMock;