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

describe('Health Check Endpoints', () => {
  describe('GET /health', () => {
    it('should return basic health status', async() => {
      const response = await request(app)
        .get('/health')
        .expect(200);

      expect(response.body).toHaveProperty('status', 'healthy');
      expect(response.body).toHaveProperty('timestamp');
      expect(response.body).toHaveProperty('uptime');
      expect(response.body).toHaveProperty('service', 'harbor-ci-cd-demo');
      expect(typeof response.body.uptime).toBe('number');
    });
  });

  describe('GET /health/detailed', () => {
    it('should return detailed health information', async() => {
      const response = await request(app)
        .get('/health/detailed')
        .expect(200);

      expect(response.body).toHaveProperty('status');
      expect(response.body).toHaveProperty('timestamp');
      expect(response.body).toHaveProperty('service', 'harbor-ci-cd-demo');
      expect(response.body).toHaveProperty('uptime');
      expect(response.body).toHaveProperty('memory');
      expect(response.body).toHaveProperty('loadAverage');
      expect(response.body).toHaveProperty('environment');

      // Check memory structure
      expect(response.body.memory).toHaveProperty('status');
      expect(response.body.memory).toHaveProperty('system');
      expect(response.body.memory).toHaveProperty('process');
      expect(response.body.memory.system).toHaveProperty('total');
      expect(response.body.memory.system).toHaveProperty('used');
      expect(response.body.memory.system).toHaveProperty('percentage');

      // Check uptime structure
      expect(response.body.uptime).toHaveProperty('process');
      expect(response.body.uptime).toHaveProperty('system');
      expect(typeof response.body.uptime.process).toBe('number');
      expect(typeof response.body.uptime.system).toBe('number');

      // Check load average
      expect(Array.isArray(response.body.loadAverage)).toBe(true);
      expect(response.body.loadAverage).toHaveLength(3);
    });

    it('should include version information', async() => {
      const response = await request(app)
        .get('/health/detailed')
        .expect(200);

      expect(response.body).toHaveProperty('version');
    });
  });

  describe('GET /health/ready', () => {
    it('should return readiness status', async() => {
      const response = await request(app)
        .get('/health/ready')
        .expect(200);

      expect(response.body).toHaveProperty('status', 'ready');
      expect(response.body).toHaveProperty('timestamp');
    });
  });

  describe('GET /health/live', () => {
    it('should return liveness status', async() => {
      const response = await request(app)
        .get('/health/live')
        .expect(200);

      expect(response.body).toHaveProperty('status', 'alive');
      expect(response.body).toHaveProperty('timestamp');
      expect(response.body).toHaveProperty('uptime');
      expect(typeof response.body.uptime).toBe('number');
    });
  });

  describe('Health status validation', () => {
    it('should return valid timestamp format', async() => {
      const response = await request(app)
        .get('/health')
        .expect(200);

      const timestamp = new Date(response.body.timestamp);
      expect(timestamp).toBeInstanceOf(Date);
      expect(timestamp.getTime()).not.toBeNaN();
    });

    it('should return consistent service name across endpoints', async() => {
      const basicHealth = await request(app).get('/health');
      const detailedHealth = await request(app).get('/health/detailed');

      expect(basicHealth.body.service).toBe(detailedHealth.body.service);
    });
  });
});