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

const profile = __ENV.K6_PROFILE || 'smoke';
const baseURL = (__ENV.K6_BASE_URL || '').replace(/\/$/, '');
const authToken = __ENV.K6_AUTH_TOKEN || 'dev-token';

export const options = profile === 'load'
  ? {
      vus: Number(__ENV.K6_VUS || 20),
      duration: __ENV.K6_DURATION || '2m',
      thresholds: {
        http_req_failed: ['rate<0.05'],
        http_req_duration: ['p(95)<500'],
      },
    }
  : {
      vus: Number(__ENV.K6_VUS || 2),
      duration: __ENV.K6_DURATION || '20s',
      thresholds: {
        http_req_failed: ['rate<0.2'],
        http_req_duration: ['p(95)<800'],
      },
    };

function assertBaseURL() {
  if (!baseURL) {
    throw new Error('K6_BASE_URL is required');
  }
}

export default function gatewayCriticalPaths() {
  assertBaseURL();

  const headers = {
    headers: {
      'Content-Type': 'application/json',
      Authorization: `Bearer ${authToken}`,
    },
  };

  const top10 = http.get(`${baseURL}/api/v1/leaderboard/top10`);
  check(top10, {
    'leaderboard top10 responds without 5xx': (r) => r.status < 500,
  });

  const player = http.get(`${baseURL}/api/v1/leaderboard/players/player-1`, headers);
  check(player, {
    'player lookup responds without 5xx': (r) => r.status < 500,
  });

  const randomQuestion = http.post(
    `${baseURL}/api/v1/questions/random`,
    JSON.stringify({}),
    headers,
  );
  check(randomQuestion, {
    'random question responds without 5xx': (r) => r.status < 500,
  });

  const startSession = http.post(
    `${baseURL}/api/v1/sessions/start`,
    JSON.stringify({ user_id: 'player-1' }),
    headers,
  );
  check(startSession, {
    'session start responds without 5xx': (r) => r.status < 500,
  });

  sleep(Number(__ENV.K6_SLEEP_SECONDS || 0.5));
}