/* utility package for jsPsych */

(function($) {

	jsPsych.utils = (function(){
		
		// public methods
		var public_object = {};
		
		// take the hierarchically arranged jsPsych.data object and turn it into
		// a one-dimensional array where each entry is data from a  single trial
		// append_data is optional and can be items that should be added to all
		// trials, such as a subject identifier
		public_object.flatten_data_object = function(data_object, append_data={})
		{
			var trials = [];
			
			// loop through data_object
			for(var i = 0; i < data_object.length; i++)
			{
				for(var j = 0; j < data_object[i].length; j++)
				{
					var data = $.extend({}, data_object[i][j], append_data);
					trials.push(data);
				}
			}
			
			return trials;
		}
	
		return public_object;
	})();
	
)(jQuery);