(function(window) {
  var _instance = null;
  window.TallPlugin = function(config) {
    this.config = config;
    this.props = null;
  };

  // 初始化并保证是单例
  TallPlugin.init = function(config) {
    if (!_instance) {
      _instance = new TallPlugin(config);
    }
    return _instance;
  };

  function postMsg(message) {
    let origin = '*';
    window.postMessage(message, origin);
  }

  TallPlugin.prototype.created = function(callback) {
    console.log('created begin');
    var _this = this;
    postMsg('created');
    window.addEventListener(
      'message',
      function({ data, origin }) {
        console.log('on created message, data, origin: ', data, origin);
        try {
          var target = JSON.parse(data);
          if (target.success) {
            _this.props = JSON.parse(data);
            callback && typeof callback === 'function' && callback.call(_this, _this.props);
          }
          //  else {
          //     _this.props = null;
          // }
        } catch (e) {
          _this.props = null;
        }
      },
      false,
    );
    // DOM加载完成
    window.addEventListener('DOMContentLoaded', this.mounted, false);
    // window onload
    window.addEventListener('load', this.loaded, false);
    // destroy
    window.addEventListener('unload', this.destroy, false);
    // error
    window.addEventListener('error', this.error, false);
    return this;
  };

  TallPlugin.prototype.mounted = function(callback) {
    console.log('mounted');
    postMsg('mounted');
    callback && typeof callback === 'function' && callback.call(this);
    return this;
  };

  TallPlugin.prototype.loaded = function(callback) {
    console.log('loaded');
    postMsg('loaded');
    callback && typeof callback === 'function' && callback.call(this);
    return this;
  };

  TallPlugin.prototype.destroy = function(callback) {
    console.log('destroy');
    postMsg('destroy');
    callback && typeof callback === 'function' && callback.call(this);
    return this;
  };

  TallPlugin.prototype.error = function(callback) {
    console.log('error');
    postMsg('error');
    callback && typeof callback === 'function' && callback.call(this);
    return this;
  };
})(window);