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

const vus = parseInt(__ENV.TEST_VUS || '10');
const duration = __ENV.TEST_DURATION || '30s';
const targetUrl = __ENV.TARGET_URL || 'http://test-for-310--003.dev.svc.cluster.local:8080';

export const options = {
  scenarios: {
    load_test: {
      executor: 'ramping-vus',
      startVUs: 0,
      stages: [
        { duration: '10s', target: vus },
        { duration: duration, target: vus },
        { duration: '5s', target: 0 },
      ],
    },
  },
  thresholds: {
    http_req_duration: ['p(95)<500'],
    http_req_failed: ['rate<0.01'],
  },
};

http.setResponseCallback(http.expectedStatuses({ min: 200, max: 399 }));

export default function () {
  group('Items API', () => {
    const listRes = http.get(`${targetUrl}/api/items`);
    check(listRes, {
      'GET /api/items status is 200': (r) => r.status === 200,
      'GET /api/items response time < 500ms': (r) => r.timings.duration < 500,
      'GET /api/items returns array': (r) => Array.isArray(r.json()),
    });

    const createRes = http.post(`${targetUrl}/api/items`, JSON.stringify({ name: 'Test Item', description: 'A test item description' }), {
      headers: { 'Content-Type': 'application/json' },
    });
    check(createRes, {
      'POST /api/items status is 201': (r) => r.status === 201,
      'POST /api/items response time < 500ms': (r) => r.timings.duration < 500,
      'POST /api/items returns created item': (r) => r.json().name === 'Test Item',
    });

    const itemId = createRes.json().id;

    const getRes = http.get(`${targetUrl}/api/items/${itemId}`);
    check(getRes, {
      'GET /api/items/{id} status is 200': (r) => r.status === 200,
      'GET /api/items/{id} response time < 500ms': (r) => r.timings.duration < 500,
      'GET /api/items/{id} returns correct item': (r) => r.json().id === itemId,
    });

    const updateRes = http.put(`${targetUrl}/api/items/${itemId}`, JSON.stringify({ name: 'Updated Item', description: 'Updated description' }), {
      headers: { 'Content-Type': 'application/json' },
    });
    check(updateRes, {
      'PUT /api/items/{id} status is 200': (r) => r.status === 200,
      'PUT /api/items/{id} response time < 500ms': (r) => r.timings.duration < 500,
      'PUT /api/items/{id} returns updated item': (r) => r.json().name === 'Updated Item',
    });

    const deleteRes = http.del(`${targetUrl}/api/items/${itemId}`);
    check(deleteRes, {
      'DELETE /api/items/{id} status is 200': (r) => r.status === 200,
      'DELETE /api/items/{id} response time < 500ms': (r) => r.timings.duration < 500,
      'DELETE /api/items/{id} confirms deletion': (r) => r.json().deleted === itemId,
    });
  });

  sleep(0.5);

  group('Actuator API', () => {
    const healthRes = http.get(`${targetUrl}/actuator/health`);
    check(healthRes, {
      'GET /actuator/health status is 200': (r) => r.status === 200,
      'GET /actuator/health response time < 500ms': (r) => r.timings.duration < 500,
      'GET /actuator/health returns UP status': (r) => r.json().status === 'UP',
    });

    const prometheusRes = http.get(`${targetUrl}/actuator/prometheus`);
    check(prometheusRes, {
      'GET /actuator/prometheus status is 200': (r) => r.status === 200,
      'GET /actuator/prometheus response time < 500ms': (r) => r.timings.duration < 500,
    });
  });

  sleep(0.5);
}