import http from 'k6/http';
import { check, sleep } from 'k6';
import { Rate, Trend } from 'k6/metrics';

const errorRate = new Rate('errors');
const responseTime = new Trend('response_time');

export const options = {
  stages: [
    { duration: '30s', target: 10 },
    { duration: '1m', target: 50 },
    { duration: '30s', target: 100 },
    { duration: '30s', target: 0 },
  ],
  thresholds: {
    errors: ['rate<0.1'],
    http_req_duration: ['p(95)<500', 'p(99)<1000'],
    response_time: ['p(95)<500'],
  },
};

const BASE_URL = __ENV.BASE_URL || 'http://localhost:3001';

export default function () {
  const response = http.get(`${BASE_URL}/api/cv`);
  
  check(response, {
    'status is 200': (r) => r.status === 200,
    'has personal data': (r) => {
      const body = r.json();
      return body.personal && body.personal.name;
    },
    'has experience array': (r) => {
      const body = r.json();
      return Array.isArray(body.experience);
    },
    'has skills object': (r) => {
      const body = r.json();
      return body.skills && typeof body.skills === 'object';
    },
    'response time < 200ms': (r) => r.timings.duration < 200,
  });
  
  errorRate.add(response.status !== 200);
  responseTime.add(response.timings.duration);
  
  sleep(1);
}

export function handleSummary(data) {
  return {
    'stdout': JSON.stringify(data, null, 2),
    'tests/performance/results.json': JSON.stringify(data, null, 2),
  };
}