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

/**
 * ST-GW-01 — Gateway health liveness bajo carga.
 *
 *   k6 run -e BASE_URL=http://127.0.0.1:8189 -e PROFILE=shared8g k6_gateway_health.js
 *   k6 run -e PROFILE=lab k6_gateway_health.js
 *
 * Perfiles:
 *   shared8g (default) — host Ubuntu 8GiB compartido (MLflow/Airflow/etc.)
 *   lab — Docker dedicado a IPS
 */
const PROFILE = __ENV.PROFILE || 'shared8g';

const profiles = {
  shared8g: {
    stages: [
      { duration: '20s', target: 5 },
      { duration: '40s', target: 15 },
      { duration: '40s', target: 25 },
      { duration: '20s', target: 0 },
    ],
    thresholds: {
      http_req_failed: ['rate<0.01'],
      http_req_duration: ['p(95)<500'],
    },
  },
  lab: {
    stages: [
      { duration: '30s', target: 20 },
      { duration: '1m', target: 50 },
      { duration: '1m', target: 100 },
      { duration: '30s', target: 0 },
    ],
    thresholds: {
      http_req_failed: ['rate<0.001'],
      http_req_duration: ['p(95)<300'],
    },
  },
};

const cfg = profiles[PROFILE] || profiles.shared8g;

export const options = {
  stages: cfg.stages,
  thresholds: cfg.thresholds,
  tags: { profile: PROFILE, host: 'ubuntu-shared-8g' },
};

const BASE_URL = __ENV.BASE_URL || 'http://127.0.0.1:8189';

export default function () {
  const res = http.get(`${BASE_URL}/health/live`);
  check(res, {
    'status is 200': (r) => r.status === 200,
    'body ok': (r) => String(r.body).includes('ok'),
  });
  sleep(0.2);
}