feat: Implement get trigger substeps API endpoint

packages/backend/src/controllers/api/v1/apps/get-auth.test.js

@@ -28,7 +28,7 @@ describe('GET /api/v1/apps/:appKey/auth', () => {
 
   it('should return not found response for invalid app key', async () => {
     await request(app)
-      .get('/api/v1/apps/invalid-app-key')
+      .get('/api/v1/apps/invalid-app-key/auth')
       .set('Authorization', token)
       .expect(404);
   });

packages/backend/src/controllers/api/v1/apps/get-trigger-substeps.js

@@ -0,0 +1,11 @@
+import App from '../../../../models/app.js';
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  const substeps = await App.findTriggerSubsteps(
+    request.params.appKey,
+    request.params.triggerKey
+  );
+
+  renderObject(response, substeps);
+};

packages/backend/src/controllers/api/v1/apps/get-trigger-substeps.test.js

@@ -0,0 +1,52 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import App from '../../../../models/app';
+import app from '../../../../app.js';
+import createAuthTokenByUserId from '../../../../helpers/create-auth-token-by-user-id';
+import { createUser } from '../../../../../test/factories/user';
+import getTriggerSubstepsMock from '../../../../../test/mocks/rest/api/v1/apps/get-trigger-substeps.js';
+
+describe('GET /api/v1/apps/:appKey/triggers/:triggerKey/substeps', () => {
+  let currentUser, exampleApp, token;
+
+  beforeEach(async () => {
+    currentUser = await createUser();
+    token = createAuthTokenByUserId(currentUser.id);
+    exampleApp = await App.findOneByKey('github');
+  });
+
+  it('should return the app auth info', async () => {
+    const triggers = await App.findTriggersByKey('github');
+    const exampleTrigger = triggers.find(
+      (trigger) => trigger.key === 'newIssues'
+    );
+
+    const endpointUrl = `/api/v1/apps/${exampleApp.key}/triggers/${exampleTrigger.key}/substeps`;
+
+    const response = await request(app)
+      .get(endpointUrl)
+      .set('Authorization', token)
+      .expect(200);
+
+    const expectedPayload = getTriggerSubstepsMock(exampleTrigger.substeps);
+    expect(response.body).toEqual(expectedPayload);
+  });
+
+  it('should return not found response for invalid app key', async () => {
+    await request(app)
+      .get('/api/v1/apps/invalid-app-key/triggers/invalid-trigger-key/substeps')
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return empty array for invalid trigger key', async () => {
+    const endpointUrl = `/api/v1/apps/${exampleApp.key}/triggers/invalid-trigger-key/substeps`;
+
+    const response = await request(app)
+      .get(endpointUrl)
+      .set('Authorization', token)
+      .expect(200);
+
+    expect(response.body.data).toEqual([]);
+  });
+});