const request = require('supertest');
const app = require('../../src/server');

describe('Health Check', () => {
  test('GET /health returns 200', async () => {
    const res = await request(app).get('/health');
    expect(res.status).toBe(200);
    expect(res.body.status).toBe('ok');
    expect(res.body.ts).toBeDefined();
  });
});

describe('Metrics Endpoint', () => {
  test('GET /metrics returns 200 with prometheus format', async () => {
    const res = await request(app).get('/metrics');
    expect(res.status).toBe(200);
    expect(res.text).toContain('http_requests_total');
    expect(res.text).toContain('process_cpu_user_seconds');
  });
});

describe('Auth Flow', () => {
  test('GET /login returns 200', async () => {
    const res = await request(app).get('/login');
    expect(res.status).toBe(200);
    expect(res.text).toContain('Login');
  });

  test('GET /setup returns 200 when no users exist', async () => {
    const res = await request(app).get('/setup');
    // Should either show setup form or redirect to login
    expect([200, 302]).toContain(res.status);
  });

  test('POST /login with empty body returns 200 with error', async () => {
    const res = await request(app)
      .post('/login')
      .send({})
      .set('Content-Type', 'application/x-www-form-urlencoded');
    expect(res.status).toBe(200);
  });

  test('GET / redirects to /login when not authenticated', async () => {
    const res = await request(app).get('/');
    expect(res.status).toBe(302);
    expect(res.headers.location).toBe('/login');
  });
});

describe('Protected Routes', () => {
  test('GET /loads redirects to login', async () => {
    const res = await request(app).get('/loads');
    expect(res.status).toBe(302);
  });

  test('GET /shippers redirects to login', async () => {
    const res = await request(app).get('/shippers');
    expect(res.status).toBe(302);
  });

  test('GET /payments redirects to login', async () => {
    const res = await request(app).get('/payments');
    expect(res.status).toBe(302);
  });

  test('GET /reports redirects to login', async () => {
    const res = await request(app).get('/reports');
    expect(res.status).toBe(302);
  });
});

describe('404 Handler', () => {
  test('GET /nonexistent returns 404', async () => {
    const res = await request(app).get('/nonexistent-page');
    expect(res.status).toBe(404);
  });
});