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

export const options = {
  stages: [
    { duration: '2m', target: 10 },   // Ramp up
    { duration: '5m', target: 10 },   // Steady state
    { duration: '2m', target: 20 },   // Ramp up more
    { duration: '5m', target: 20 },   // Steady state
    { duration: '2m', target: 0 },    // Ramp down
  ],
  thresholds: {
    http_req_duration: ['p(95)<5000'], // 95% of requests under 5s
    http_req_failed: ['rate<0.1'],      // Less than 10% errors
  },
};

const API_URL = __ENV.API_URL || 'http://localhost:3000';
const API_KEY = __ENV.API_KEY || 'test-key';

const endpoints = ['content', 'json', 'links'];

export default function () {
  const endpoint = endpoints[Math.floor(Math.random() * endpoints.length)];

  const res = http.post(
    `${API_URL}/api/${endpoint}`,
    JSON.stringify({ url: 'https://example.com' }),
    {
      headers: {
        'Content-Type': 'application/json',
        'x-api-key': API_KEY,
      },
    }
  );

  check(res, {
    'status is 200': (r) => r.status === 200,
    'response has success': (r) => r.json('success') === true,
  });

  sleep(1);
}