// Telegram WebApp SDK обёртки
const TG = window.Telegram?.WebApp;
// isAvailable — только если есть initData (значит мы внутри Telegram)
const TG_AVAILABLE = !!(TG && TG.initData);

window.TG_APP = {
  initData: TG?.initData || '',
  initDataUnsafe: TG?.initDataUnsafe || {},
  user: TG?.initDataUnsafe?.user || null,
  colorScheme: TG?.colorScheme || 'light',

  isAvailable: TG_AVAILABLE,

  close: () => { if (TG_AVAILABLE) TG.close(); },
  sendData: (data) => { if (TG_AVAILABLE) TG.sendData(JSON.stringify(data)); },
  haptic: (type) => {
    if (!TG_AVAILABLE) return;
    try {
      TG.HapticFeedback?.impactOccurred(type || 'light');
    } catch (e) {}
  },
  showAlert: (msg) => {
    try {
      if (TG_AVAILABLE && TG.showAlert) TG.showAlert(String(msg));
      else alert(String(msg));
    } catch (e) {
      try { alert(String(msg)); } catch {}
    }
  },
  showConfirm: (msg) => {
    try {
      if (TG_AVAILABLE && TG.showConfirm) return new Promise((r) => TG.showConfirm(msg, r));
      return Promise.resolve(confirm(String(msg)));
    } catch (e) {
      try { return Promise.resolve(confirm(String(msg))); } catch { return Promise.resolve(false); }
    }
  },

  theme: () => TG?.themeParams || {},
};