var TITLE = "1'me肌肤状态检测";
function positive(value) { return typeof value === 'number' && isFinite(value) && value > 0; }
function layout(platform) {
  var info = {};
  try { if (platform && typeof platform.getSystemInfoSync === 'function') info = platform.getSystemInfoSync() || {}; } catch (_) {}
  var top = positive(info.statusBarHeight) ? info.statusBarHeight :
    info.safeArea && positive(info.safeArea.top) ? info.safeArea.top : 20;
  var bar = positive(info.titleBarHeight) ? info.titleBarHeight : 44;
  return { title: TITLE, top: top, bar: bar, height: top + bar, showTitle: true };
}
function page(definition, platform, options) {
  options = options || {};
  definition.data = Object.assign({ brandHeader: layout() }, definition.data);
  var load = definition.onLoad, resize = definition.onResize, show = definition.onShow,
    ready = definition.onReady, hide = definition.onHide, unload = definition.onUnload;
  function refresh(instance) {
    var next = layout(platform);
    if (instance.data.brandHeader) next.showTitle = instance.data.brandHeader.showTitle;
    instance.setData({ brandHeader: next });
  }
  function clearNativeTitle(instance) {
    if (!platform || typeof platform.setNavigationBar !== 'function') return;
    var seq = instance.brandHeaderSeq = (instance.brandHeaderSeq || 0) + 1, settled = false;
    function result(ok) {
      if (settled) return; settled = true;
      if (!instance.brandHeaderVisible || instance.brandHeaderSeq !== seq) return;
      // The entry page can retain a platform-owned app name. If clearing is
      // explicitly rejected, show one native title rather than two titles.
      if (!ok && !options.nativeTitleFallback) return;
      instance.setData({ brandHeader: Object.assign({}, instance.data.brandHeader, { showTitle: ok }) });
    }
    try {
      var pending = platform.setNavigationBar({ title: '\u200b', success: function () { result(true); }, fail: function () { result(false); } });
      if (pending && typeof pending.then === 'function') Promise.resolve(pending).then(function () { result(true); }, function () { result(false); });
    } catch (_) { result(false); }
  }
  definition.onLoad = function () { this.brandHeaderVisible = true; refresh(this); clearNativeTitle(this); if (load) return load.apply(this, arguments); };
  definition.onShow = function () { this.brandHeaderVisible = true; clearNativeTitle(this); if (show) return show.apply(this, arguments); };
  definition.onReady = function () { clearNativeTitle(this); if (ready) return ready.apply(this, arguments); };
  definition.onHide = function () { this.brandHeaderVisible = false; this.brandHeaderSeq = (this.brandHeaderSeq || 0) + 1; if (hide) return hide.apply(this, arguments); };
  definition.onUnload = function () { this.brandHeaderVisible = false; this.brandHeaderSeq = (this.brandHeaderSeq || 0) + 1; if (unload) return unload.apply(this, arguments); };
  definition.onResize = function () { refresh(this); if (resize) return resize.apply(this, arguments); };
  return definition;
}
module.exports = { page: page, layout: layout };