app.util = (function(app){

	function getUrlParameter(name) {
	    name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
	    var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
	    var results = regex.exec(location.search);
	    return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
	};

	function actionMessage(message, $target, type, callback){
		message = message || '';
		$target = $target.closest('div.card').find('.actionMessage');
		type = type || 'info';
		callback = callback || function(){};

		if($target.html() === message) return;

		if($target.html()){
			$target.slideUp('fast', function(){
				$target.html('')
				$target.removeClass (function (index, className) {
					return (className.match (/(^|\s)ui-\S+/g) || []).join(' ');
				});
				if(message) return actionMessage(message, $target, type, callback);
				$target.hide()
			})
		}else{
			if(type) $target.addClass('ui-' + type);
			$target.html(message).slideDown('fast');
		}
		setTimeout(callback,10)
	}

	$( document ).ready( function () {
		$('.actionMessage').on('click', 'button.action-close', function(event){
			app.util.actionMessage(null, $(this));
		});
	});

	$.fn.serializeObject = function() {
	    var 
	        arr = $(this).serializeArray(), 
	        obj = {};
	    
	    for(var i = 0; i < arr.length; i++) {
	        if(obj[arr[i].name] === undefined) {
	            obj[arr[i].name] = arr[i].value;
	        } else {
	            if(!(obj[arr[i].name] instanceof Array)) {
	                obj[arr[i].name] = [obj[arr[i].name]];
	            }
	            obj[arr[i].name].push(arr[i].value);
	        }
	    }
	    return obj;
	};

	function formAJAX( btn, del ) {
		event.preventDefault(); // avoid to execute the actual submit of the form.
		var $form = $(btn).closest( '[action]' ); // gets the 'form' parent
		var formData = $form.find( '[name]' ).serializeObject(); // builds query formDataing
		var method = $form.attr('method') || 'post';

		// if( !$form.validate()) {
		// 	app.util.actionMessage('Please fix the form errors.', $form, 'danger')
		// 	return false;
		// }
		
		app.util.actionMessage( 
			'<div class="spinner-border" role="status"><span class="sr-only">Loading...</span></div>',
			$form,
			'state-highlight'
		);

		app.api[method]($form.attr('action'), formData, function(error, data){
			app.util.actionMessage(data.message, $form, error ? 'state-error' : 'priority-primary'); //re-populate table
			if(!error){
				$form.trigger("reset");
				eval($form.attr('evalAJAX')); //gets JS to run after completion
			}
		});
	}

	function humanFileSize(size) {
	    var i = size == 0 ? 0 : Math.floor(Math.log(size) / Math.log(1024));
	    return (size / Math.pow(1024, i)).toFixed(2) * 1 + ' ' + ['B', 'kB', 'MB', 'GB', 'TB'][i];
	}

	return {
		emptyFuction: function(){},
		getUrlParameter,
		actionMessage,
		humanFileSize,
		formAJAX,
	}
})(app);