feat: write REST API endpoint to generate auth url

packages/backend/src/controllers/api/v1/connections/generate-auth-url.test.js

@@ -0,0 +1,90 @@
+import { 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 { createUser } from '../../../../../test/factories/user.js';
+import { createConnection } from '../../../../../test/factories/connection.js';
+import { createPermission } from '../../../../../test/factories/permission.js';
+
+describe('POST /api/v1/connections/:connectionId/auth-url', () => {
+  let currentUser, token;
+
+  beforeEach(async () => {
+    currentUser = await createUser();
+
+    await createPermission({
+      action: 'create',
+      subject: 'Connection',
+      roleId: currentUser.roleId,
+      conditions: ['isCreator'],
+    });
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should generate auth url for the connection', async () => {
+    const connection = await createConnection({
+      userId: currentUser.id,
+      key: 'gitlab',
+      formattedData: {
+        clientId: 'CLIENT_ID',
+        oAuthRedirectUrl: 'http://localhost:3001/app/gitlab/connections/add',
+      },
+      verified: false,
+    });
+
+    const response = await request(app)
+      .post(`/api/v1/connections/${connection.id}/auth-url`)
+      .set('Authorization', token)
+      .expect(200);
+
+    expect(response.body.data).toStrictEqual({
+      url: expect.stringContaining('https://gitlab.com/oauth/authorize?'),
+    });
+
+    expect(response.body.data).toStrictEqual({
+      url: expect.stringContaining('client_id=CLIENT_ID'),
+    });
+
+    expect(response.body.data).toStrictEqual({
+      url: expect.stringContaining(
+        `redirect_uri=${encodeURIComponent(
+          'http://localhost:3001/app/gitlab/connections/add'
+        )}`
+      ),
+    });
+  });
+
+  it(`should return internal server error response for invalid connection data`, async () => {
+    const connection = await createConnection({
+      userId: currentUser.id,
+      key: 'gitlab',
+      formattedData: {
+        instanceUrl: 123,
+      },
+      verified: false,
+    });
+
+    await request(app)
+      .post(`/api/v1/connections/${connection.id}/auth-url`)
+      .set('Authorization', token)
+      .expect(500);
+  });
+
+  it('should return not found response for not existing connection UUID', async () => {
+    const notExistingConnectionUUID = Crypto.randomUUID();
+
+    await request(app)
+      .post(`/api/v1/connections/${notExistingConnectionUUID}/auth-url`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await request(app)
+      .post('/api/v1/connections/invalidConnectionUUID/auth-url')
+      .set('Authorization', token)
+      .expect(400);
+  });
+});