Function shouldScanUrl

background.js:515–547

(url)

// ============================================================================

async function shouldScanUrl(url) {
  if (url.startsWith('chrome://') || url.startsWith('chrome-extension://') ||
      url.startsWith('about:') || url.startsWith('file://')) {
    return false;
  }

  const settings = await getSettings();
  const { hostname } = new URL(url);

  // Check whitelist
  for (const pattern of settings.whitelist) {
    const parts = pattern.split('.').reverse();
    const hostParts = hostname.split('.').reverse();
    let match = true;
    for (let i = 0; i < parts.length && match; i++) {
      if (parts[i] !== '*' && parts[i] !== hostParts[i]) match = false;
    }
    if (match) return false;
  }

  // Check interval
  const result = await chrome.storage.local.get(['checkedUrls']);
  const checked = result.checkedUrls || {};
  const lastChecked = checked[url];

  if (lastChecked && (Date.now() - lastChecked < settings.checkInterval)) {
    return false;
  }

  checked[url] = Date.now();
  await chrome.storage.local.set({ checkedUrls: checked });
  return true;
}

function isSoft404(text) {
  const lower = text.toLowerCase();