export function normalizeUrl(input) {
  try {
    const url = new URL(input);
    url.hash = "";

    url.protocol = url.protocol.toLowerCase();
    url.hostname = url.hostname.toLowerCase();

    // Remove default ports
    if ((url.protocol === "http:" && url.port === "80") || (url.protocol === "https:" && url.port === "443")) {
      url.port = "";
    }

    // Trim trailing slash on pathname (but keep root '/')
    if (url.pathname.length > 1 && url.pathname.endsWith("/")) {
      url.pathname = url.pathname.slice(0, -1);
    }

    // Drop common tracking params
    const trackingPrefixes = ["utm_", "spm", "gclid", "fbclid"];
    for (const key of [...url.searchParams.keys()]) {
      const lowerKey = key.toLowerCase();
      if (trackingPrefixes.some((p) => lowerKey.startsWith(p))) {
        url.searchParams.delete(key);
      }
    }

    // Sort params for stable output
    const sorted = [...url.searchParams.entries()].sort(([a], [b]) => a.localeCompare(b));
    url.search = "";
    for (const [k, v] of sorted) url.searchParams.append(k, v);

    return url.toString();
  } catch {
    return input;
  }
}

export function computeUrlHash(normalizedUrl) {
  // Lightweight hash (non-crypto) for dedupe key; server may replace with crypto later.
  let hash = 2166136261;
  for (let i = 0; i < normalizedUrl.length; i++) {
    hash ^= normalizedUrl.charCodeAt(i);
    hash = Math.imul(hash, 16777619);
  }
  return (hash >>> 0).toString(16);
}

export { parseNetscapeBookmarkHtml } from "./bookmarkHtml.js";