const FacebookShare = (function () {
  let appId = null;

  function init(id) {
    if (!id) {
      console.error("FacebookShare Init Error: appId is required.");
      return;
    }
    appId = id;
  }

  function isMobile() {
    return /Mobi|Android|iPhone|iPad|iPod/i.test(navigator.userAgent);
  }

  function share(url) {
    if (!appId) {
      console.error("FacebookShare Error: Module is not initialized. Call Init(appId) first.");
      return;
    }

    const shareLink = isMobile()
      ? `https://www.facebook.com/dialog/share?app_id=${appId}&display=popup&href=${encodeURIComponent(url)}`
      : `https://www.facebook.com/sharer/sharer.php?u=${encodeURIComponent(url)}`;

    window.open(shareLink, "sharer", "toolbar=0, status=0, width=626, height=436");
  }

  return {
    Init: init,
    Share: share,
  };
})();