/*
 * Inline Form Validation Engine 2.2, jQuery plugin
 *
 * Copyright(c) 2010, Cedric Dugas
 * http://www.position-absolute.com
 *
 * 2.0 Rewrite by Olivier Refalo
 * http://www.crionics.com
 *
 * Form validation engine allowing custom regex rules to be added.
 * Licensed under the MIT License
 */
(function($) {

	var methods = {

		/**
		 * Kind of the constructor, called before any action
		 * @param {Map} user options
		 */
		init: function(options) {
			var form = this;
			if (!form.data('jqv') || form.data('jqv') == null ) {
				methods._saveOptions(form, options);

				// bind all formError elements to close on click
				$(".formError").live("click", function() {
					$(this).fadeOut(150, function() {

						// remove prompt once invisible
						$(this).remove();
					});
				});
			}
		},
		/**
		 * Attachs jQuery.validationEngine to form.submit and field.blur events
		 * Takes an optional params: a list of options
		 * ie. jQuery("#formID1").validationEngine('attach', {promptPosition : "centerRight"});
		 */
		attach: function(userOptions) {
			
			var form = this;
			var options;

			if(userOptions)
				options = methods._saveOptions(form, userOptions);
			else
				options = form.data('jqv');

			var validateAttribute = (form.find("[data-validation-engine*=validate]")) ? "data-validation-engine" : "class";
			
			if (!options.binded) {
					if (options.bindMethod == "bind"){
						
						// bind fields
						form.find("[class*=validate]").not("[type=checkbox]").not("[type=radio]").not(".datepicker").bind(options.validationEventTrigger, methods._onFieldEvent);
						form.find("[class*=validate][type=checkbox],[class*=validate][type=radio]").bind("click", methods._onFieldEvent);
						
						form.find("[class*=validate][class*=datepicker]").bind(options.validationEventTrigger,{"delay": 300}, methods._onFieldEvent);

						// bind form.submit
						form.bind("submit", methods._onSubmitEvent);
					} else if (options.bindMethod == "live") {
						// bind fields with LIVE (for persistant state)
						form.find("[class*=validate]").not("[type=checkbox]").not(".datepicker").live(options.validationEventTrigger, methods._onFieldEvent);
						form.find("[class*=validate][type=checkbox]").live("click", methods._onFieldEvent);

						form.find("[class*=validate][class*=datepicker]").live(options.validationEventTrigger,{"delay": 300}, methods._onFieldEvent);

						// bind form.submit
						form.live("submit", methods._onSubmitEvent);
					}

				options.binded = true;
			}
			return this;
		},
		/**
		 * Unregisters any bindings that may point to jQuery.validaitonEngine
		 */
		detach: function() {
			var form = this;
			var options = form.data('jqv');
			if (options.binded) {

				// unbind fields
				form.find("[class*=validate]").not("[type=checkbox]").unbind(options.validationEventTrigger, methods._onFieldEvent);
				form.find("[class*=validate][type=checkbox],[class*=validate][type=radio]").unbind("click", methods._onFieldEvent);

				// unbind form.submit
				form.unbind("submit", methods.onAjaxFormComplete);
				
			   
				// unbind live fields (kill)
				form.find("[class*=validate]").not("[type=checkbox]").die(options.validationEventTrigger, methods._onFieldEvent);
				form.find("[class*=validate][type=checkbox]").die("click", methods._onFieldEvent);
				// unbind form.submit

				


				form.die("submit", methods.onAjaxFormComplete);
				
				form.removeData('jqv');
			}
		},
		/**
		 * Validates the form fields, shows prompts accordingly.
		 * Note: There is no ajax form validation with this method, only field ajax validation are evaluated
		 *
		 * @return true if the form validates, false if it fails
		 */
		validate: function() {
			return methods._validateFields(this);
		},
		/**
		 * Validates one field, shows prompt accordingly.
		 * Note: There is no ajax form validation with this method, only field ajax validation are evaluated
		 *
		 * @return true if the form validates, false if it fails
		 */
		validateField: function(el) {
			var options = $(this).data('jqv');
			return methods._validateField($(el), options);
		},
		/**
		 * Validates the form fields, shows prompts accordingly.
		 * Note: this methods performs fields and form ajax validations(if setup)
		 *
		 * @return true if the form validates, false if it fails, undefined if ajax is used for form validation
		 */
		validateform: function() {
			return methods._onSubmitEvent.call(this);
		},
		/**
		 *  Redraw prompts position, useful when you change the DOM state when validating
		 */
		updatePromptsPosition: function() {
			var form = this.closest('form');
			var options = form.data('jqv');
			// No option, take default one
			form.find('[class*=validate]').not(':hidden').not(":disabled").each(function(){
				var field = $(this);

				var prompt = methods._getPrompt(field);
				var promptText = $(prompt).find(".formErrorContent").html();

				if(prompt) methods._updatePrompt(field, $(prompt), promptText, undefined, false, options);
			})
		},
		/**
		 * Displays a prompt on a element.
		 * Note that the element needs an id!
		 *
		 * @param {String} promptText html text to display type
		 * @param {String} type the type of bubble: 'pass' (green), 'load' (black) anything else (red)
		 * @param {String} possible values topLeft, topRight, bottomLeft, centerRight, bottomRight
		 */
		showPrompt: function(promptText, type, promptPosition, showArrow) {

			var form = this.closest('form');
			var options = form.data('jqv');
			// No option, take default one
			if(!options) options = methods._saveOptions(this, options);
			if(promptPosition)
				options.promptPosition=promptPosition;
			options.showArrow = showArrow==true;

			methods._showPrompt(this, promptText, type, false, options);
		},
		/**
		 * Closes all error prompts on the page
		 */
		hidePrompt: function() {
			var promptClass =  "."+ methods._getClassName($(this).attr("id")) + "formError";
			$(promptClass).fadeTo("fast", 0.3, function() {
				$(this).remove();
			});
		},
		/**
		 * Closes form error prompts, CAN be invidual
		 */
		hide: function() {
			var closingtag;
			if($(this).is("form")){
				closingtag = "parentForm"+$(this).attr('id');
			}else{
				closingtag = $(this).attr('id') +"formError";
			}
			$('.'+closingtag).fadeTo("fast", 0.3, function() {
				$(this).remove();
			});
		},
		/**
		 * Closes all error prompts on the page
		 */
		hideAll: function() {
			$('.formError').fadeTo("fast", 0.3, function() {
				$(this).remove();
			});
		},
		/**
		 * Typically called when user exists a field using tab or a mouse click, triggers a field
		 * validation
		 */
		_onFieldEvent: function(event) {
			var field = $(this);
			var form = field.closest('form');
			var options = form.data('jqv');
			// validate the current field
			window.setTimeout(function() {
				methods._validateField(field, options);
			}, (event.data) ? event.data.delay : 0);
			
		},
		/**
		 * Called when the form is submited, shows prompts accordingly
		 *
		 * @param {jqObject}
		 *            form
		 * @return false if form submission needs to be cancelled
		 */
		_onSubmitEvent: function() {
			var form = $(this);
			var options = form.data('jqv');
   
			// validate each field (- skip field ajax validation, no necessary since we will perform an ajax form validation)
			var r=methods._validateFields(form, true);
		
			if (r && options.ajaxFormValidation) {
				methods._validateFormWithAjax(form, options);
				return false;
			}

			if(options.onValidationComplete) {
				options.onValidationComplete(form, r);
				return false;
			}
			return r;
		},

		/**
		 * Return true if the ajax field validations passed so far
		 * @param {Object} options
		 * @return true, is all ajax validation passed so far (remember ajax is async)
		 */
		_checkAjaxStatus: function(options) {
			var status = true;
			$.each(options.ajaxValidCache, function(key, value) {
				if (!value) {
					status = false;
					// break the each
					return false;
				}
			});
			return status;
		},
		/**
		 * Validates form fields, shows prompts accordingly
		 *
		 * @param {jqObject}
		 *            form
		 * @param {skipAjaxFieldValidation}
		 *            boolean - when set to true, ajax field validation is skipped, typically used when the submit button is clicked
		 *
		 * @return true if form is valid, false if not, undefined if ajax form validation is done
		 */
		_validateFields: function(form, skipAjaxValidation) {
			var options = form.data('jqv');

			// this variable is set to true if an error is found
			var errorFound = false;
			
			// Trigger hook, start validation
			form.trigger("jqv.form.validating");
			// first, evaluate status of non ajax fields
			form.find('[class*=validate]').not(':hidden').not(":disabled").each( function() {
				var field = $(this);
				errorFound |= methods._validateField(field, options, skipAjaxValidation);
			});
			// second, check to see if all ajax calls completed ok
			// errorFound |= !methods._checkAjaxStatus(options);
			
			// thrird, check status and scroll the container accordingly
			form.trigger("jqv.form.result", [errorFound]);
			
			if (errorFound) {
				
				if (options.scroll) {

					// get the position of the first error, there should be at least one, no need to check this
					//var destination = form.find(".formError:not('.greenPopup'):first").offset().top;

					// look for the visually top prompt
					var destination = Number.MAX_VALUE;
					var fixleft = 0;
					var lst = $(".formError:not('.greenPopup')");

					for (var i = 0; i < lst.length; i++) {
						var d = $(lst[i]).offset().top;
						if (d < destination){
							destination = d;
							fixleft = $(lst[i]).offset().left;
						}
					}

					if (!options.isOverflown)
						$("html:not(:animated),body:not(:animated)").animate({
							scrollTop: destination,
							scrollLeft: fixleft
						}, 1100);
					else {
						var overflowDIV = $(options.overflownDIV);
						var scrollContainerScroll = overflowDIV.scrollTop();
						var scrollContainerPos = -parseInt(overflowDIV.offset().top);

						destination += scrollContainerScroll + scrollContainerPos - 5;
						var scrollContainer = $(options.overflownDIV + ":not(:animated)");

						scrollContainer.animate({
							scrollTop: destination
						}, 1100);

						$("html:not(:animated),body:not(:animated)").animate({
							scrollTop: overflowDIV.offset().top,
							scrollLeft: fixleft
						}, 1100);
					}
				}
				return false;
			}
			return true;
		},
		/**
		 * This method is called to perform an ajax form validation.
		 * During this process all the (field, value) pairs are sent to the server which returns a list of invalid fields or true
		 *
		 * @param {jqObject} form
		 * @param {Map} options
		 */
		_validateFormWithAjax: function(form, options) {

			var data = form.serialize();
			var url = (options.ajaxFormValidationURL) ? options.ajaxFormValidationURL : form.attr("action");
			$.ajax({
				type: "GET",
				url: url,
				cache: false,
				dataType: "json",
				data: data,
				form: form,
				methods: methods,
				options: options,
				beforeSend: function() {
					return options.onBeforeAjaxFormValidation(form, options);
				},
				error: function(data, transport) {
					methods._ajaxError(data, transport);
				},
				success: function(json) {

					if (json !== true) {

						// getting to this case doesn't necessary means that the form is invalid
						// the server may return green or closing prompt actions
						// this flag helps figuring it out
						var errorInForm=false;
						for (var i = 0; i < json.length; i++) {
							var value = json[i];
						
							var errorFieldId = value[0];
							var errorField = $($("#" + errorFieldId)[0]);
							
							// make sure we found the element
							if (errorField.length == 1) {
								
								// promptText or selector
								var msg = value[2];
								// if the field is valid
								if (value[1] == true) {

									if (msg == ""  || !msg){
										// if for some reason, status==true and error="", just close the prompt
										methods._closePrompt(errorField);
									} else {
										// the field is valid, but we are displaying a green prompt
										if (options.allrules[msg]) {
											var txt = options.allrules[msg].alertTextOk;
											if (txt)
												msg = txt;
										}
										methods._showPrompt(errorField, msg, "pass", false, options, true);
									}

								} else {
									// the field is invalid, show the red error prompt
									errorInForm|=true;
									if (options.allrules[msg]) {
										var txt = options.allrules[msg].alertText;
										if (txt)
											msg = txt;
									}
									methods._showPrompt(errorField, msg, "", false, options, true);
								}
							}
						}
						options.onAjaxFormComplete(!errorInForm, form, json, options);
					} else
						options.onAjaxFormComplete(true, form, "", options);
				}
			});

		},
		/**
		 * Validates field, shows prompts accordingly
		 *
		 * @param {jqObject}
		 *            field
		 * @param {Array[String]}
		 *            field's validation rules
		 * @param {Map}
		 *            user options
		 * @return true if field is valid
		 */
		_validateField: function(field, options, skipAjaxValidation) {
			if (!field.attr("id"))
				$.error("jQueryValidate: an ID attribute is required for this field: " + field.attr("name") + " class:" +
				field.attr("class"));

			var rulesParsing = field.attr('class');
			var getRules = /validate\[(.*)\]/.exec(rulesParsing);
			if (!getRules)
				return false;
			var str = getRules[1];
			var rules = str.split(/\[|,|\]/);

			// true if we ran the ajax validation, tells the logic to stop messing with prompts
			var isAjaxValidator = false;
			var fieldName = field.attr("name");
			var promptText = "";
			var required = false;
			options.isError = false;
			options.showArrow = true;

			for (var i = 0; i < rules.length; i++) {

				var errorMsg = undefined;
				switch (rules[i]) {

					case "required":
						required = true;
						errorMsg = methods._required(field, rules, i, options);
						break;
					case "custom":
						errorMsg = methods._customRegex(field, rules, i, options);
						break;
					case "groupRequired":
						// Check is its the first of group, if not, reload validation with first field
						// AND continue normal validation on present field
						var classGroup = "[class*=" +rules[i + 1] +"]";	
						var firstOfGroup = field.closest("form").find(classGroup).eq(0);
						if(firstOfGroup[0] != field[0]){
							methods._validateField(firstOfGroup, options, skipAjaxValidation)
							options.showArrow = true;
							continue;
						};
						errorMsg = methods._groupRequired(field, rules, i, options);
						if(errorMsg) required = true;
						options.showArrow = false;
						break;
					case "ajax":
						// ajax has its own prompts handling technique
						if(!skipAjaxValidation){
							methods._ajax(field, rules, i, options);
							isAjaxValidator = true;
						}
						break;
					case "minSize":
						errorMsg = methods._minSize(field, rules, i, options);
						break;
					case "maxSize":
						errorMsg = methods._maxSize(field, rules, i, options);
						break;
					case "min":
						errorMsg = methods._min(field, rules, i, options);
						break;
					case "max":
						errorMsg = methods._max(field, rules, i, options);
						break;
					case "past":
						errorMsg = methods._past(field, rules, i, options);
						break;
					case "future":
						errorMsg = methods._future(field, rules, i, options);
						break;
					case "dateRange":
						var classGroup = "[class*=" + rules[i + 1] + "]";
						var firstOfGroup = field.closest("form").find(classGroup).eq(0);
						var secondOfGroup = field.closest("form").find(classGroup).eq(1);
						/*
						if (firstOfGroup[0] != field[0]) {
							methods._validateField(firstOfGroup, options, skipAjaxValidation)
							options.showArrow = true;
							continue;
						};
						*/
						//if one entry out of the pair has value then proceed to run through validation
						if (firstOfGroup[0].value || secondOfGroup[0].value) {
							errorMsg = methods._dateRange(firstOfGroup, secondOfGroup, rules, i, options);
						}
						if (errorMsg) required = true;
						options.showArrow = false;
						break;

					case "dateTimeRange":
						var classGroup = "[class*=" + rules[i + 1] + "]";
						var firstOfGroup = field.closest("form").find(classGroup).eq(0);
						var secondOfGroup = field.closest("form").find(classGroup).eq(1);
						/*
						if (firstOfGroup[0] != field[0]) {
							methods._validateField(firstOfGroup, options, skipAjaxValidation)
							options.showArrow = true;
							continue;
						};
						*/
						//if one entry out of the pair has value then proceed to run through validation
						if (firstOfGroup[0].value || secondOfGroup[0].value) {
							errorMsg = methods._dateTimeRange(firstOfGroup, secondOfGroup, rules, i, options);
						}
						if (errorMsg) required = true;
						options.showArrow = false;
						break;
					case "maxCheckbox":
						errorMsg = methods._maxCheckbox(field, rules, i, options);
						field = $($("input[name='" + fieldName + "']"));
						break;
					case "minCheckbox":
						errorMsg = methods._minCheckbox(field, rules, i, options);
						field = $($("input[name='" + fieldName + "']"));
						break;
					case "equals":
						errorMsg = methods._equals(field, rules, i, options);
						break;
					case "funcCall":
						errorMsg = methods._funcCall(field, rules, i, options);
						break;

					default:
					//$.error("jQueryValidator rule not found"+rules[i]);
				}
				if (errorMsg !== undefined) {
					promptText += errorMsg + "<br/>";
					options.isError = true;
					
				}

			}
			// If the rules required is not added, an empty field is not validated
			if(!required){
				if(field.val() == "") options.isError = false;
			}			
			
			// Hack for radio/checkbox group button, the validation go into the
			// first radio/checkbox of the group
			var fieldType = field.attr("type");

			if ((fieldType == "radio" || fieldType == "checkbox") && $("input[name='" + fieldName + "']").size() > 1) {
				field = $($("input[name='" + fieldName + "'][type!=hidden]:first"));
				options.showArrow = false;
			}
			if (fieldType == "text" && $("input[name='" + fieldName + "']").size() > 1) {
				field = $($("input[name='" + fieldName + "'][type!=hidden]:first"));
				options.showArrow = false;
			}

			if (options.isError){
				
				methods._showPrompt(field, promptText, "", false, options);
			}else{
				if (!isAjaxValidator) methods._closePrompt(field);
			}
			field.trigger("jqv.field.result", [field, options.isError, promptText]);
			return options.isError;
		},
		/**
		 * Required validation
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_required: function(field, rules, i, options) {
			switch (field.attr("type")) {
				case "text":
				case "password":
				case "textarea":
				case "file":
				default:
					if (!field.val())
						return options.allrules[rules[i]].alertText;
					break;
				case "radio":
				case "checkbox":
					var name = field.attr("name");
					if ($("input[name='" + name + "']:checked").size() == 0) {
						if ($("input[name='" + name + "']").size() == 1)
							return options.allrules[rules[i]].alertTextCheckboxe;
						else
							return options.allrules[rules[i]].alertTextCheckboxMultiple;
					}
					break;
				// required for <select>
				case "select-one":
					// added by paul@kinetek.net for select boxes, Thank you
					if (!field.val())
						return options.allrules[rules[i]].alertText;
					break;
				case "select-multiple":
					// added by paul@kinetek.net for select boxes, Thank you
					if (!field.find("option:selected").val())
						return options.allrules[rules[i]].alertText;
					break;
			}
		},
		/**
		 * Validate that 1 from the group field is required
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_groupRequired: function(field, rules, i, options) {
			var classGroup = "[class*=" +rules[i + 1] +"]";
			var isValid = false;
			// Check all fields from the group
			field.closest("form").find(classGroup).each(function(){
				if(!methods._required($(this), rules, i, options)){
					isValid = true;
					return false;
				}
			})
			
			if(!isValid) return options.allrules[rules[i]].alertText;
		},
		/**
		 * Validate Regex rules
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_customRegex: function(field, rules, i, options) {
			var customRule = rules[i + 1];
			var rule = options.allrules[customRule];
			if(!rule) {
				alert("jqv:custom rule not found "+customRule);
				return;
			}
			
			var ex=rule.regex;
			if(!ex) {
				alert("jqv:custom regex not found "+customRule);
				return;
			}
			var pattern = new RegExp(ex);

			if (!pattern.test(field.val()))
				return options.allrules[customRule].alertText;
		},
		/**
		 * Validate custom function outside of the engine scope
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_funcCall: function(field, rules, i, options) {
			var functionName = rules[i + 1];
			var fn = window[functionName];
			if (typeof(fn) == 'function')
				return fn(field, rules, i, options);

		},
		/**
		 * Field match
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_equals: function(field, rules, i, options) {
			var equalsField = rules[i + 1];

			if (field.val() != $("#" + equalsField).val())
				return options.allrules.equals.alertText;
		},
		/**
		 * Check the maximum size (in characters)
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_maxSize: function(field, rules, i, options) {
			var max = rules[i + 1];
			var len = field.val().length;

			if (len > max) {
				var rule = options.allrules.maxSize;
				return rule.alertText + max + rule.alertText2;
			}
		},
		/**
		 * Check the minimum size (in characters)
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_minSize: function(field, rules, i, options) {
			var min = rules[i + 1];
			var len = field.val().length;

			if (len < min) {
				var rule = options.allrules.minSize;
				return rule.alertText + min + rule.alertText2;
			}
		},
		/**
		 * Check number minimum value
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_min: function(field, rules, i, options) {
			var min = parseFloat(rules[i + 1]);
			var len = parseFloat(field.val());

			if (len < min) {
				var rule = options.allrules.min;
				if (rule.alertText2) return rule.alertText + min + rule.alertText2;
				return rule.alertText + min;
			}
		},
		/**
		 * Check number maximum value
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_max: function(field, rules, i, options) {
			var max = parseFloat(rules[i + 1]);
			var len = parseFloat(field.val());

			if (len >max ) {
				var rule = options.allrules.max;
				if (rule.alertText2) return rule.alertText + max + rule.alertText2;
				//orefalo: to review, also do the translations
				return rule.alertText + max;
			}
		},
		/**
		 * Checks date is in the past
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_past: function(field, rules, i, options) {

			var p=rules[i + 1];
			var pdate = (p.toLowerCase() == "now")? new Date():methods._parseDate(p);
			var vdate = methods._parseDate(field.val());

			if (vdate < pdate ) {
				var rule = options.allrules.past;
				if (rule.alertText2) return rule.alertText + methods._dateToString(pdate) + rule.alertText2;
				return rule.alertText + methods._dateToString(pdate);
			}
		},
		/**
		 * Checks date is in the future
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_future: function(field, rules, i, options) {

			var p=rules[i + 1];
			var pdate = (p.toLowerCase() == "now")? new Date():methods._parseDate(p);
			var vdate = methods._parseDate(field.val());

			if (vdate > pdate ) {
				var rule = options.allrules.future;
				if (rule.alertText2) return rule.alertText + methods._dateToString(pdate) + rule.alertText2;
				return rule.alertText + methods._dateToString(pdate);
			}
		},
		/**
		* Checks if valid date
		*
		* @param {string} date string
		* @return a bool based on determination of valid date
		*/
		_isDate: function (value) {
			var dateRegEx = new RegExp(/^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$|^(?:(?:(?:0?[13578]|1[02])(\/|-)31)|(?:(?:0?[1,3-9]|1[0-2])(\/|-)(?:29|30)))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^(?:(?:0?[1-9]|1[0-2])(\/|-)(?:0?[1-9]|1\d|2[0-8]))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^(0?2(\/|-)29)(\/|-)(?:(?:0[48]00|[13579][26]00|[2468][048]00)|(?:\d\d)?(?:0[48]|[2468][048]|[13579][26]))$/);
			if (dateRegEx.test(value)) {
				return true;
			}
			return false;
		},
		/**
		* Checks if valid date time
		*
		* @param {string} date string
		* @return a bool based on determination of valid date time
		*/
		_isDateTime: function (value){
			var dateTimeRegEx = new RegExp(/^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])\s+(1[012]|0?[1-9]){1}:(0?[1-5]|[0-6][0-9]){1}:(0?[0-6]|[0-6][0-9]){1}\s+(am|pm|AM|PM){1}$|^(?:(?:(?:0?[13578]|1[02])(\/|-)31)|(?:(?:0?[1,3-9]|1[0-2])(\/|-)(?:29|30)))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^((1[012]|0?[1-9]){1}\/(0?[1-9]|[12][0-9]|3[01]){1}\/\d{2,4}\s+(1[012]|0?[1-9]){1}:(0?[1-5]|[0-6][0-9]){1}:(0?[0-6]|[0-6][0-9]){1}\s+(am|pm|AM|PM){1})$/);
			if (dateTimeRegEx.test(value)) {
				return true;
			}
			return false;
		},
		//Checks if the start date is before the end date
		//returns true if end is later than start
		_dateCompare: function (start, end) {
			return (new Date(start.toString()) < new Date(end.toString()));
		},
		/**
		* Checks date range
		*
		* @param {jqObject} first field name
		* @param {jqObject} second field name
		* @return an error string if validation failed
		*/
		_dateRange: function (first, second, rules, i, options) {
			//are not both populated
			if ((!first[0].value && second[0].value) || (first[0].value && !second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}

			//are not both dates
			if (!methods._isDate(first[0].value) || !methods._isDate(second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}

			//are both dates but range is off
			if (!methods._dateCompare(first[0].value, second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}
		},


		/**
		* Checks date time range
		*
		* @param {jqObject} first field name
		* @param {jqObject} second field name
		* @return an error string if validation failed
		*/
		_dateTimeRange: function (first, second, rules, i, options) {
			//are not both populated
			if ((!first[0].value && second[0].value) || (first[0].value && !second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}
			//are not both dates
			if (!methods._isDateTime(first[0].value) || !methods._isDateTime(second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}
			//are both dates but range is off
			if (!methods._dateCompare(first[0].value, second[0].value)) {
				return options.allrules[rules[i]].alertText + options.allrules[rules[i]].alertText2;
			}
		},
		/**
		 * Max number of checkbox selected
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_maxCheckbox: function(field, rules, i, options) {

			var nbCheck = rules[i + 1];
			var groupname = field.attr("name");
			var groupSize = $("input[name='" + groupname + "']:checked").size();
			if (groupSize > nbCheck) {
				options.showArrow = false;
				if (options.allrules.maxCheckbox.alertText2) return options.allrules.maxCheckbox.alertText + " " + nbCheck + " " + options.allrules.maxCheckbox.alertText2;
				return options.allrules.maxCheckbox.alertText;
			}
		},
		/**
		 * Min number of checkbox selected
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return an error string if validation failed
		 */
		_minCheckbox: function(field, rules, i, options) {

			var nbCheck = rules[i + 1];
			var groupname = field.attr("name");
			var groupSize = $("input[name='" + groupname + "']:checked").size();
			if (groupSize < nbCheck) {
				options.showArrow = false;
				return options.allrules.minCheckbox.alertText + " " + nbCheck + " " +
				options.allrules.minCheckbox.alertText2;
			}
		},
		/**
		 * Ajax field validation
		 *
		 * @param {jqObject} field
		 * @param {Array[String]} rules
		 * @param {int} i rules index
		 * @param {Map}
		 *            user options
		 * @return nothing! the ajax validator handles the prompts itself
		 */
		_ajax: function(field, rules, i, options) {
			
			
			var errorSelector = rules[i + 1];
			var rule = options.allrules[errorSelector];
			var extraData = rule.extraData;
			var extraDataDynamic = rule.extraDataDynamic;

			if (!extraData)
				extraData = "";

			if (extraDataDynamic) {
			  var tmpData = [];
			  var domIds = String(extraDataDynamic).split(",");
			  for (var i = 0; i < domIds.length; i++) {
				var id = domIds[i];
				if ($(id).length) {
				  var inputValue = field.closest("form").find(id).val();
				  var keyValue = id.replace('#', '') + '=' + escape(inputValue);
				  tmpData.push(keyValue);
				}
			  }
			  extraDataDynamic = tmpData.join("&");
			} else {
			  extraDataDynamic = "";              
			}
								
			if (!options.isError) {
				$.ajax({
					type: "POST",
					url: rule.url,
					cache: false,
					dataType: "json",
					data: "fieldId=" + field.attr("id") + "&fieldValue=" + field.val() + "&extraData=" + extraData + "&" + extraDataDynamic,
					field: field,
					rule: rule,
					methods: methods,
					options: options,
					beforeSend: function() {
						// build the loading prompt
						var loadingText = rule.alertTextLoad;
						if (loadingText)
							methods._showPrompt(field, loadingText, "load", true, options);
					},
					error: function(data, transport) {
						methods._ajaxError(data, transport);
					},
					success: function(json) {
						
						// asynchronously called on success, data is the json answer from the server
						var errorFieldId = json[0];
						var errorField = $($("#" + errorFieldId)[0]);
						// make sure we found the element
						if (errorField.length == 1) {
							var status = json[1];
							// read the optional msg from the server
							var msg = json[2];
							if (!status) {
								// Houston we got a problem - display an red prompt
								options.ajaxValidCache[errorFieldId] = false;
								options.isError = true;

								// resolve the msg prompt
								if(msg) {
									if (options.allrules[msg]) {
										var txt = options.allrules[msg].alertText;
										if (txt)
											msg = txt;
									}
								}
								else
									msg = rule.alertText;
								
								methods._showPrompt(errorField, msg, "", true, options);
							} else {
								if (options.ajaxValidCache[errorFieldId] !== undefined)
									options.ajaxValidCache[errorFieldId] = true;

								// resolves the msg prompt
								if(msg) {
									if (options.allrules[msg]) {
										var txt = options.allrules[msg].alertTextOk;
										if (txt)
											msg = txt;
									}
								}
								else
									msg = rule.alertTextOk;                                

								// see if we should display a green prompt
								if (msg)
									methods._showPrompt(errorField, msg, "pass", true, options);
								else
									methods._closePrompt(errorField);
							}
						}
					}
				});
			}
		},
		/**
		 * Common method to handle ajax errors
		 *
		 * @param {Object} data
		 * @param {Object} transport
		 */
		_ajaxError: function(data, transport) {
			if(data.status == 0 && transport == null)
				alert("The page is not served from a server! ajax call failed");
			else if(typeof console != "undefined")
				console.log("Ajax error: " + data.status + " " + transport);
		},
		/**
		 * date -> string
		 *
		 * @param {Object} date
		 */
		_dateToString: function(date) {

			return date.getFullYear()+"-"+(date.getMonth()+1)+"-"+date.getDate();
		},
		/**
		 * Parses an ISO date
		 * @param {String} d
		 */
		_parseDate: function(d) {

			var dateParts = d.split("-");
			if(dateParts==d)
				dateParts = d.split("/");
			return new Date(dateParts[0], (dateParts[1] - 1) ,dateParts[2]);
		},
		/**
		 * Builds or updates a prompt with the given information
		 *
		 * @param {jqObject} field
		 * @param {String} promptText html text to display type
		 * @param {String} type the type of bubble: 'pass' (green), 'load' (black) anything else (red)
		 * @param {boolean} ajaxed - use to mark fields than being validated with ajax
		 * @param {Map} options user options
		 */
		_showPrompt: function(field, promptText, type, ajaxed, options, ajaxform) {
			var prompt = methods._getPrompt(field);
			// The ajax submit errors are not see has an error in the form,
			// When the form errors are returned, the engine see 2 bubbles, but those are ebing closed by the engine at the same time
			// Because no error was found befor submitting
			if(ajaxform) prompt = false;
			if (prompt)
				methods._updatePrompt(field, prompt, promptText, type, ajaxed, options);
			else
				methods._buildPrompt(field, promptText, type, ajaxed, options);
		},
		/**
		 * Builds and shades a prompt for the given field.
		 *
		 * @param {jqObject} field
		 * @param {String} promptText html text to display type
		 * @param {String} type the type of bubble: 'pass' (green), 'load' (black) anything else (red)
		 * @param {boolean} ajaxed - use to mark fields than being validated with ajax
		 * @param {Map} options user options
		 */
		_buildPrompt: function(field, promptText, type, ajaxed, options) {

			// create the prompt
			var prompt = $('<div>');
			prompt.addClass(methods._getClassName(field.attr("id")) + "formError");
			// add a class name to identify the parent form of the prompt
			if(field.is(":input")) prompt.addClass("parentForm"+methods._getClassName(field.parents('form').attr("id")));
			prompt.addClass("formError");

			switch (type) {
				case "pass":
					prompt.addClass("greenPopup");
					break;
				case "load":
					prompt.addClass("blackPopup");
			}
			if (ajaxed)
				prompt.addClass("ajaxed");

			// create the prompt content
			var promptContent = $('<div>').addClass("formErrorContent").html(promptText).appendTo(prompt);
			// create the css arrow pointing at the field
			// note that there is no triangle on max-checkbox and radio
			if (options.showArrow) {
				var arrow = $('<div>').addClass("formErrorArrow");

				switch (options.promptPosition) {
					case "bottomLeft":
					case "bottomRight":
						prompt.find(".formErrorContent").before(arrow);
						arrow.addClass("formErrorArrowBottom").html('<div class="line1"><!-- --></div><div class="line2"><!-- --></div><div class="line3"><!-- --></div><div class="line4"><!-- --></div><div class="line5"><!-- --></div><div class="line6"><!-- --></div><div class="line7"><!-- --></div><div class="line8"><!-- --></div><div class="line9"><!-- --></div><div class="line10"><!-- --></div>');
						break;
					case "topLeft":
					case "topRight":
						arrow.html('<div class="line10"><!-- --></div><div class="line9"><!-- --></div><div class="line8"><!-- --></div><div class="line7"><!-- --></div><div class="line6"><!-- --></div><div class="line5"><!-- --></div><div class="line4"><!-- --></div><div class="line3"><!-- --></div><div class="line2"><!-- --></div><div class="line1"><!-- --></div>');
						prompt.append(arrow);
						break;
				}
			}

			//Cedric: Needed if a container is in position:relative
			// insert prompt in the form or in the overflown container?
			if (options.isOverflown)
				field.before(prompt);
			else
			   $("body").append(prompt);

			var pos = methods._calculatePosition(field, prompt, options);
			prompt.css({
				"top": pos.callerTopPosition,
				"left": pos.callerleftPosition,
				"marginTop": pos.marginTopSize,
				"opacity": 0
			});

			return prompt.animate({
				"opacity": 0.87
			});

		},
		/**
		 * Updates the prompt text field - the field for which the prompt
		 * @param {jqObject} field
		 * @param {String} promptText html text to display type
		 * @param {String} type the type of bubble: 'pass' (green), 'load' (black) anything else (red)
		 * @param {boolean} ajaxed - use to mark fields than being validated with ajax
		 * @param {Map} options user options
		 */
		_updatePrompt: function(field, prompt, promptText, type, ajaxed, options) {
			
			if (prompt) {
				if (type == "pass")
					prompt.addClass("greenPopup");
				else
					prompt.removeClass("greenPopup");

				if (type == "load")
					prompt.addClass("blackPopup");
				else
					prompt.removeClass("blackPopup");

				if (ajaxed)
					prompt.addClass("ajaxed");
				else
					prompt.removeClass("ajaxed");

				prompt.find(".formErrorContent").html(promptText);

				var pos = methods._calculatePosition(field, prompt, options);
				prompt.animate({
					"top": pos.callerTopPosition,
					"left": pos.callerleftPosition,
					"marginTop": pos.marginTopSize
				});
			}
		},
		/**
		 * Closes the prompt associated with the given field
		 *
		 * @param {jqObject}
		 *            field
		 */
		_closePrompt: function(field) {

			var prompt = methods._getPrompt(field);
			if (prompt)
				prompt.fadeTo("fast", 0, function() {
					prompt.remove();
				});
		},
		closePrompt: function(field) {
			return methods._closePrompt(field);
		},
		/**
		 * Returns the error prompt matching the field if any
		 *
		 * @param {jqObject}
		 *            field
		 * @return undefined or the error prompt (jqObject)
		 */
		  _getPrompt: function(field) {
			var className = field.attr("id").replace(":","_") + "formError";
			var match = $("." + methods._escapeExpression(className))[0];
			if (match)
			  return $(match);
		  },
		 /**
		 * Returns the escapade classname
		 *
		 * @param {selector}
		 *            className
		 */		
		  _escapeExpression: function (selector) {
			return selector.replace(/([#;&,\.\+\*\~':"\!\^$\[\]\(\)=>\|])/g, "\\$1");
		  },
		/**
		* Calculates prompt position
		*
		* @param {jqObject}
		*            field
		* @param {jqObject}
		*            the prompt
		* @param {Map}
		*            options
		* @return positions
		*/
		_calculatePosition: function (field, promptElmt, options) {

			var promptTopPosition, promptleftPosition, marginTopSize;
			var fieldWidth = field.width();
			var promptHeight = promptElmt.height();

			var overflow = options.isOverflown;
			if (overflow) {
				// is the form contained in an overflown container?
				promptTopPosition = promptleftPosition = 0;
				// compensation for the arrow
				marginTopSize = -promptHeight;
			} else {
				var offset = field.offset();
				promptTopPosition = offset.top;
				promptleftPosition = offset.left;
				marginTopSize = 0;
			}

			switch (options.promptPosition) {

				default:
				case "topRight":
					if (overflow)
						// Is the form contained in an overflown container?
						promptleftPosition += fieldWidth - 30;
					else {
						promptleftPosition += fieldWidth - 30;
						promptTopPosition += -promptHeight -2;
					}
					break;
				case "topLeft":
					promptTopPosition += -promptHeight - 10;
					break;
				case "centerRight":
					promptleftPosition += fieldWidth + 13;
					break;
				case "bottomLeft":
					promptTopPosition = promptTopPosition + field.height() + 15;
					break;
				case "bottomRight":
					promptleftPosition += fieldWidth - 30;
					promptTopPosition += field.height() + 5;
			}

			return {
				"callerTopPosition": promptTopPosition + "px",
				"callerleftPosition": promptleftPosition + "px",
				"marginTopSize": marginTopSize + "px"
			};
		},
		/**
		 * Saves the user options and variables in the form.data
		 *
		 * @param {jqObject}
		 *            form - the form where the user option should be saved
		 * @param {Map}
		 *            options - the user options
		 * @return the user options (extended from the defaults)
		 */
		_saveOptions: function(form, options) {

			// is there a language localisation ?
			if ($.validationEngineLanguage)
				var allRules = $.validationEngineLanguage.allRules;
			else
				$.error("jQuery.validationEngine rules are not loaded, plz add localization files to the page");
			// --- Internals DO NOT TOUCH or OVERLOAD ---
			// validation rules and i18
			$.validationEngine.defaults.allrules = allRules;
			
			var userOptions = $.extend({},$.validationEngine.defaults, options);

			form.data('jqv', userOptions);
			return userOptions;
		},
		
		/**
		 * Removes forbidden characters from class name
		 * @param {String} className
		 */
		_getClassName: function(className) {
			return className.replace(":","_").replace(".","_");
		}
	};

	/**
	 * Plugin entry point.
	 * You may pass an action as a parameter or a list of options.
	 * if none, the init and attach methods are being called.
	 * Remember: if you pass options, the attached method is NOT called automatically
	 *
	 * @param {String}
	 *            method (optional) action
	 */
	$.fn.validationEngine = function(method) {

		var form = $(this);
		  if(!form[0]) return false;  // stop here if the form does not exist
		  
		if (typeof(method) == 'string' && method.charAt(0) != '_' && methods[method]) {

			// make sure init is called once
			if(method != "showPrompt" && method != "hidePrompt" && method != "hide" && method != "hideAll") 
				methods.init.apply(form);

			return methods[method].apply(form, Array.prototype.slice.call(arguments, 1));
		} else if (typeof method == 'object' || !method) {
			// default constructor with or without arguments
			
			methods.init.apply(form, arguments);
			return methods.attach.apply(form);
		} else {
			$.error('Method ' + method + ' does not exist in jQuery.validationEngine');
		}
	};
	// LEAK GLOBAL OPTIONS
	$.validationEngine= {defaults:{

		// Name of the event triggering field validation
		validationEventTrigger: "blur",
		// Automatically scroll viewport to the first error
		scroll: true,
		// Opening box position, possible locations are: topLeft,
		// topRight, bottomLeft, centerRight, bottomRight
		promptPosition: "topRight",
		bindMethod:"bind",
		// internal, automatically set to true when it parse a _ajax rule
		inlineAjax: false,
		// if set to true, the form data is sent asynchronously via ajax to the form.action url (get)
		ajaxFormValidation: false,
		// Ajax form validation callback method: boolean onComplete(form, status, errors, options)
		// retuns false if the form.submit event needs to be canceled.
		ajaxFormValidationURL: false,
		// The url to send the submit ajax validation (default to action)
		onAjaxFormComplete: $.noop,
		// called right before the ajax call, may return false to cancel
		onBeforeAjaxFormValidation: $.noop,
		// Stops form from submitting and execute function assiciated with it
		onValidationComplete: false,

		// Used when the form is displayed within a scrolling DIV
		isOverflown: false,
		overflownDIV: "",

		// true when form and fields are binded
		binded: false,
		// set to true, when the prompt arrow needs to be displayed
		showArrow: true,
		// did one of the validation fail ? kept global to stop further ajax validations
		isError: false,
		// Caches field validation status, typically only bad status are created.
		// the array is used during ajax form validation to detect issues early and prevent an expensive submit
		ajaxValidCache: {}

	}}
	
})(jQuery);