declare const window: any;

/**
 * @private
 */
export const get = (element: Element | Window, path: string): any => {
  const paths: string[] = path.split('.');
  let obj: any = element;
  for (let i: number = 0; i < paths.length; i++) {
    if (!obj) {
      return null;
    }
    obj = obj[paths[i]];
  }
  return obj;
};

/**
 * @private
 */
export const getPromise = (callback: Function): Promise<any> => {
  const tryNativePromise = () => {
    if (window.Promise) {
      return new Promise((resolve, reject) => {
        callback(resolve, reject);
      });
    } else {
      console.error(
        'No Promise support or polyfill found. To enable Ionic Native support, please add the es6-promise polyfill before this script, or run with a library like Angular or on a recent browser.'
      );
    }
  };

  return tryNativePromise();
};

/**
 * @private
 * @param pluginRef
 * @returns {null|*}
 */
export const getPlugin = (pluginRef: string): any => {
  return get(window, pluginRef);
};

/**
 * @private
 */
export const pluginWarn = (
  pluginName: string,
  plugin?: string,
  method?: string
): void => {
  if (method) {
    console.warn(
      'Ionic Native: tried calling ' +
        pluginName +
        '.' +
        method +
        ', but the ' +
        pluginName +
        ' plugin is not installed.'
    );
  } else {
    console.warn(
      `'Ionic Native: tried accessing the ${pluginName} plugin but it's not installed.`
    );
  }
  if (plugin) {
    console.warn(
      `Install the ${pluginName} plugin: 'ionic cordova plugin add ${plugin}'`
    );
  }
};

/**
 * @private
 * @param pluginName
 * @param method
 */
export const cordovaWarn = (pluginName: string, method?: string): void => {
  if (method) {
    console.warn(
      'Ionic Native: tried calling ' +
        pluginName +
        '.' +
        method +
        ', but Cordova is not available. Make sure to a) run in a real device or simulator and b) include cordova.js in your index.html'
    );
  } else {
    console.warn(
      'Native: tried accessing the ' +
        pluginName +
        ' plugin but Cordova is not available. Make sure to a) run in a real device or simulator and b) include cordova.js in your index.html'
    );
  }
};