Helper to search text inside objects

SearchHelper

(function(){
	'use strict';

	angular
	.module('ad-utils')
	.factory('SearchHelper', Search);

	function Search($log, $filter){
		var service = {
      string: searchStrInObj
		};

		return service;

    function searchStrInObj(obj, str, paths){
      $log.debug("searching...");
      if(!str) return false;
      $log.debug('String to search: ' + str);

      str = str.toLowerCase();
      
      var res = [];
      _.map(obj, function(v, k){

        var strings = str.split(" ");
        var many = [];
        for(var i in strings){
          var values = [];
          for(var j in paths){
              var val = _get(v, paths[j]);
              if( Object.prototype.toString.call( val ) === '[object Array]' ) {
                for(var x in val){
                  values.push( searchVal( val[x], strings[i]) );
                }
              } else {
                values.push( searchVal( _get(v, paths[j]), strings[i]) );
              }
          }

          if( _.contains(values, true) ){
            many.push(strings[i]);
          }
        }

        if( strings.join() === many.join()){
           res.push(v);
        }
      }); 

      return res;
    }

    /*
     * Search a substr in hay 
     * */
    function searchVal(hay, needle){
      var format = 'dd MMMM YYYY h:mma';
      
      if(hay instanceof Date){
        hay = $filter('date')(hay, format);
        console.log(hay);
      }

      if( typeof hay !== "string") return false;
      return hay.toLowerCase().indexOf( needle ) !== -1;
    }

    /*
     * Allow to search into a JS object with a string in dot notation
     * EX:
     * _get(obj, 'detail.venue.address')
     * */
    function _get(obj, propString) {
      if (!propString)
          return obj;

      var prop, props = propString.split('.');

      for (var i = 0, iLen = props.length - 1; i < iLen; i++) {
          prop = props[i];

          var candidate = obj[prop];
          if (candidate !== undefined) {
              obj = candidate;
          } else {
              break;
          }
      }
      try {
        return obj[props[i]];
      } catch(e){
        return '';
      }
    }
	}
})();