async function makeRequest(test) {
  const apiUrl = document.getElementById('apiUrl').value;
  const endpoint = typeof test.endpoint === 'function' ? test.endpoint() : test.endpoint;
  const url = `${apiUrl}${endpoint}`;

  const options = {
    method: test.method,
    headers: {
      'Content-Type': 'application/json',
    }
  };

  if (test.auth && authToken) {
    options.headers['Authorization'] = `Bearer ${authToken}`;
  }

  if (test.body) {
    options.body = JSON.stringify(typeof test.body === 'function' ? test.body() : test.body);
  }

  const response = await fetch(url, options);
  const data = await response.json().catch(() => ({}));

  return { data, status: response.status };
}

async function runTest(categoryIdx, testIdx) {
  const test = tests[categoryIdx].tests[testIdx];
  const testId = `test-${categoryIdx}-${testIdx}`;
  const testEl = document.getElementById(testId);
  const contentEl = document.getElementById(`${testId}-content`);
  const toggleEl = document.getElementById(`${testId}-toggle`);
  const resultEl = testEl.querySelector('.test-result');

  if (test.skip && test.skip()) {
    testEl.querySelector('.test-status').textContent = 'SKIPPED';
    testEl.querySelector('.test-status').className = 'test-status pending';
    resultEl.style.display = 'block';
    resultEl.className = 'test-result';
    resultEl.innerHTML = '⚠️ Prerequisites not met';
    return 'skip';
  }

  testEl.className = 'test-case running';
  testEl.querySelector('.test-status').textContent = 'RUNNING';
  testEl.querySelector('.test-status').className = 'test-status running';
  resultEl.style.display = 'none';

  try {
    const { data, status } = await makeRequest(test);

    const expectFail = test.expectFail || false;
    const passed = test.expect(data, status);

    const success = expectFail ? !passed || status >= 400 : passed;

    testEl.className = success ? 'test-case pass' : 'test-case fail';
    testEl.querySelector('.test-status').textContent = success ? 'PASS' : 'FAIL';
    testEl.querySelector('.test-status').className = `test-status ${success ? 'pass' : 'fail'}`;

    // Determine status code class
    let statusClass = 'status-5xx';
    if (status >= 200 && status < 300) statusClass = 'status-2xx';
    else if (status >= 300 && status < 400) statusClass = 'status-3xx';
    else if (status >= 400 && status < 500) statusClass = 'status-4xx';

    // Check expected fields if defined
    let expectedFieldsHTML = '';
    if (test.expectedFields) {
      const fieldChecks = test.expectedFields.map(field => {
        const exists = field.split('.').reduce((obj, key) => obj?.[key], data) !== undefined;
        const icon = exists ? '✓' : '✗';
        const className = exists ? 'pass' : 'fail';
        return `<div class="field-check ${className}">${icon} ${field}</div>`;
      }).join('');

      expectedFieldsHTML = `
        <div class="expected-section">
          <div class="expected-label">Expected Fields:</div>
          ${fieldChecks}
        </div>
      `;
    }

    resultEl.style.display = 'block';
    resultEl.className = 'test-result';
    resultEl.innerHTML = `
      <div style="margin-bottom: 8px;">
        <span class="response-status ${statusClass}">HTTP ${status}</span>
        <span style="color: #666;">${success ? '✓ Test passed' : '✗ Test failed'}</span>
      </div>
      ${expectedFieldsHTML}
      <div style="color: #666; font-size: 12px; margin-bottom: 4px;">Response:</div>
      <div>${JSON.stringify(data, null, 2)}</div>
    `;

    if (success && test.onSuccess) {
      test.onSuccess(data);
    }

    return success ? 'pass' : 'fail';
  } catch (error) {
    testEl.className = 'test-case fail';
    testEl.querySelector('.test-status').textContent = 'ERROR';
    testEl.querySelector('.test-status').className = 'test-status fail';

    resultEl.style.display = 'block';
    resultEl.className = 'test-error';
    resultEl.innerHTML = `
      <div style="font-weight: bold; margin-bottom: 8px;">❌ Network/Request Error</div>
      <div>${error.message}</div>
      ${error.stack ? `<div style="margin-top: 8px; font-size: 11px; opacity: 0.7;">${error.stack}</div>` : ''}
    `;
    return 'fail';
  }
}

async function runAllTests(event) {
  resetState();

  const button = event.target;
  button.disabled = true;
  button.textContent = '⏳ Running Tests...';

  let totalTests = 0;
  let passedTests = 0;
  let failedTests = 0;

  for (let i = 0; i < tests.length; i++) {
    for (let j = 0; j < tests[i].tests.length; j++) {
      const result = await runTest(i, j);
      if (result !== 'skip') {
        totalTests++;
        if (result === 'pass') passedTests++;
        if (result === 'fail') failedTests++;
      }
    }
  }

  document.getElementById('summary').style.display = 'flex';
  document.getElementById('totalTests').textContent = totalTests;
  document.getElementById('passedTests').textContent = passedTests;
  document.getElementById('failedTests').textContent = failedTests;

  button.disabled = false;
  button.textContent = '▶ Run All Tests';
}