import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'contains'
})
export class ContainsPipe implements PipeTransform {

  transform(input: any, predicate: any): Array<any> {

    function convertToArray(object) {

      return Array.isArray(object) ? object : Object.keys(object).map(function (key) {

        return object[key];

      });

    }

    function isObject(object) {

      return (typeof object === "object" && object !== null) || typeof object === "function";

    }

    function isString(value) {

      return (typeof value === "string" && value !== null);

    }

    function isFunction(callback) {

      return callback && {}.toString.call(callback) === '[object Function]';

    }

    input = isObject(input) ? convertToArray(input) : input;

    return input.some((e: any) => isFunction(predicate) || (isString(predicate) && isObject(e)) ? String(predicate) : e === predicate);
  }

}