function navigationGeometry(info = {}, menu = {}) {
  const width = info.windowWidth || 375;
  const height = info.windowHeight || 812;
  const status = info.statusBarHeight || 24;
  const validMenu = menu.top >= status && menu.height > 0 && menu.left > 0 && menu.left < width;
  const top = validMenu ? menu.top : status + 6;
  const rowHeight = validMenu ? menu.height : 32;
  const menuLeft = validMenu ? menu.left : width - 100;
  const headerHeight = top + rowHeight + 12;
  return {
    top,
    rowHeight,
    titleWidth: Math.max(80, menuLeft - 28),
    headerHeight,
    scrollHeight: Math.max(0, height - headerHeight),
  };
}

module.exports = { navigationGeometry };