/**
 * pc-live  |  IC-Verwaltung App
 * Renders the ic-verwaltung UI inside a WindowManager window via iframe.
 * Messages are relayed: Lua TriggerEvent → pc-live SendNUIMessage → postMessage → iframe.
 */
const ICVerwaltungApp = (() => {
  const WIN_ID    = 'app-ic-verwaltung';
  const IFRAME_ID = 'ic-verwaltung-frame';
  const IC_ORIGIN = 'https://cfx-nui-ic-verwaltung';

  let _iframe = null;

  function open() {
    if (windows_has(WIN_ID)) {
      WindowManager.focus(WIN_ID);
      return;
    }

    const content = `
      <iframe
        id="${IFRAME_ID}"
        src="${IC_ORIGIN}/html/index.html"
        style="width:100%;height:100%;border:none;display:block;background:#1a1a2e;"
      ></iframe>`;

    const winEl = WindowManager.create({
      id:     WIN_ID,
      title:  'IC-Verwaltung',
      icon:   '🏛',
      width:  960,
      height: 620,
      content,
    });

    // Intercept titlebar X so Lua is notified when user closes the window manually
    if (winEl) {
      const closeBtn = winEl.querySelector('.wc-close');
      if (closeBtn) {
        closeBtn.addEventListener('click', () => {
          _iframe = null;
          fetchNui('closeIcVerwaltung', {});
        }, { once: true });
      }
    }

    _iframe = document.getElementById(IFRAME_ID);

    // Tell Lua to open ic-verwaltung in pcMode — relay will carry the open message
    fetchNui('openIcVerwaltung', {});
  }

  // Called by desktop.js when action === 'ic_verwaltung_relay'
  function onRelay(msg) {
    // ic-verwaltung's close action → close the PC window instead of posting back
    if (msg && msg.action === 'close') {
      WindowManager.close(WIN_ID);
      _iframe = null;
      return;
    }
    if (!_iframe) {
      _iframe = document.getElementById(IFRAME_ID);
    }
    if (_iframe && _iframe.contentWindow) {
      _iframe.contentWindow.postMessage(msg, IC_ORIGIN);
    }
  }

  // Helper: check if a window id is already open (WindowManager has no .exists method)
  function windows_has(id) {
    return !!document.querySelector(`[data-wid="${id}"]`);
  }

  return { open, onRelay };
})();