/* http://plugins.jquery.com/validate */
;(function(defaults, $, window, undefined) {

	var

		type = ['input:not([type]),input[type="color"],input[type="date"],input[type="datetime"],input[type="datetime-local"],input[type="email"],input[type="file"],input[type="hidden"],input[type="month"],input[type="number"],input[type="password"],input[type="range"],input[type="search"],input[type="tel"],input[type="text"],input[type="time"],input[type="url"],input[type="week"],textarea', 'select', 'input[type="checkbox"],input[type="radio"]'],

		// All field types
		allTypes = type.join(','),

		extend = {},

		// Method to validate each fields
		validateField = function(event, options) {

			var

				// Field status
				status = {
					pattern : true,
					conditional : true,
					required : true
				},

				// Current field
				field = $(this),

				// Current field value
				fieldValue = field.val() || '',

				// An index of extend
				fieldValidate = field.data('validate'),

				// A validation object (jQuery.fn.validateExtend)
				validation = fieldValidate !== undefined ? extend[fieldValidate] : {},

				// One index or more separated for spaces to prepare the field value
				fieldPrepare = field.data('prepare') || validation.prepare,

				// A regular expression to validate field value
				fieldPattern = (field.data('pattern') || ($.type(validation.pattern) == 'regexp' ? validation.pattern : /(?:)/)),

				// Is case sensitive? (Boolean)
				fieldIgnoreCase = field.attr('data-ignore-case') || field.data('ignoreCase') || validation.ignoreCase,

				// A field mask
				fieldMask = field.data('mask') || validation.mask,

				// A index in the conditional object containing a function to validate the field value
				fieldConditional = field.data('conditional') || validation.conditional,

				// Is required?
				fieldRequired = field.data('required'),

				// The description element id
				fieldDescribedby = field.data('describedby') || validation.describedby,

				// An index of description object
				fieldDescription = field.data('description') || validation.description,

				// Trim spaces?
				fieldTrim = field.data('trim'),

				reTrue = /^(true|)$/i,

				reFalse = /^false$/i,

				// The description object
				fieldDescription = $.isPlainObject(fieldDescription) ? fieldDescription : (options.description[fieldDescription] || {}),

				name = 'validate';

			fieldRequired = fieldRequired != '' ? (fieldRequired || !!validation.required) : true;

			fieldTrim = fieldTrim != '' ? (fieldTrim || !!validation.trim) : true;

			// Trim spaces?
			if(reTrue.test(fieldTrim)) {

				fieldValue = $.trim(fieldValue);
			}

			// The fieldPrepare is a function?
			if($.isFunction(fieldPrepare)) {

				// Updates the fieldValue variable
				fieldValue = String(fieldPrepare.call(field, fieldValue));
			} else {

				// Is a function?
				if($.isFunction(options.prepare[fieldPrepare])) {

					// Updates the fieldValue variable
					fieldValue = String(options.prepare[fieldPrepare].call(field, fieldValue));
				}
			}

			// Is not RegExp?
			if($.type(fieldPattern) != 'regexp') {

				fieldIgnoreCase = !reFalse.test(fieldIgnoreCase);

				// Converts to RegExp
				fieldPattern = fieldIgnoreCase ? RegExp(fieldPattern, 'i') : RegExp(fieldPattern);
			}

			// The conditional exists?
			if(fieldConditional != undefined) {

				// The fieldConditional is a function?
				if($.isFunction(fieldConditional)) {

					status.conditional = !!fieldConditional.call(field, fieldValue, options);
				} else {

					var

						// Splits the conditionals in an array
						conditionals = fieldConditional.split(/[\s\t]+/);

					// Each conditional
					for(var counter = 0, len = conditionals.length; counter < len; counter++) {

						if(options.conditional.hasOwnProperty(conditionals[counter]) && !options.conditional[conditionals[counter]].call(field, fieldValue, options)) {

							status.conditional = false;
						}
					}
				}
			}

			fieldRequired = reTrue.test(fieldRequired);

			// Is required?
			if(fieldRequired) {

				// Verifies the field type
				if(field.is(type[0] + ',' + type[1])) {

					// Is empty?
					if(!fieldValue.length > 0) {

						status.required = false;
					}
				} else if(field.is(type[2])) {

					if(field.is('[name]')) {

						// Is checked?
						if($('[name="' + field.prop('name') + '"]:checked').length == 0) {

							status.required = false;
						}
					} else {

						status.required = field.is(':checked');
					}
				}
			}

			// Verifies the field type
			if(field.is(type[0])) {

				// Test the field value pattern
				if(fieldPattern.test(fieldValue)) {

					// If the event type is not equals to keyup
					if(event.type != 'keyup' && fieldMask !== undefined) {

						var matches = fieldValue.match(fieldPattern);

						// Each characters group
						for(var i = 0, len = matches.length; i < len; i++) {

							// Replace the groups
							fieldMask = fieldMask.replace(RegExp('\\$\\{' + i + '(?::`([^`]*)`)?\\}', 'g'), (matches[i] !== undefined ? matches[i] : '$1'));
						}

						fieldMask = fieldMask.replace(/\$\{\d+(?::`([^`]*)`)?\}/g, '$1');

						// Test the field value pattern
						if(fieldPattern.test(fieldMask)) {

							// Update the field value
							field.val(fieldMask);
						}
					}
				} else {

					// If the field is required
					if(fieldRequired) {

						status.pattern = false;
					} else {

						if(fieldValue.length > 0) {

							status.pattern = false;
						}
					}
				}
			}

			var

				describedby = $('[id="' + fieldDescribedby +'"]'),

				log = fieldDescription.valid;

			if(describedby.length > 0 && event.type != 'keyup') {

				if(!status.required) {

					log = fieldDescription.required;
				} else if(!status.pattern) {

					log = fieldDescription.pattern;
				} else if(!status.conditional) {

					log = fieldDescription.conditional;
				}

				describedby.html(log || '');
			}

			if(typeof(validation.each) == 'function') {

				validation.each.call(field, event, status, options);
			}

			// Call the eachField callback
			options.eachField.call(field, event, status, options);

			// If the field is valid
			if(status.required && status.pattern && status.conditional) {

				// If WAI-ARIA is enabled
				if(!!options.waiAria) {

					field.prop('aria-invalid', false);
				}

				if(typeof(validation.valid) == 'function') {

					validation.valid.call(field, event, status, options);
				}

				// Call the eachValidField callback
				options.eachValidField.call(field, event, status, options);
			} else {

				// If WAI-ARIA is enabled
				if(!!options.waiAria) {

					field.prop('aria-invalid', true);
				}

				if(typeof(validation.invalid) == 'function') {

					validation.invalid.call(field, event, status, options);
				}

				// Call the eachInvalidField callback
				options.eachInvalidField.call(field, event, status, options);
			}

			// Returns the field status
			return status;
		};

	$.extend({

		// Method to extends validations
		validateExtend : function(options) {

			return $.extend(extend, options);
		},

		// Method to change the default properties of jQuery.fn.validate method
		validateSetup : function(options) {

			return $.extend(defaults, options);
		}
	}).fn.extend({

		// Method to validate forms
		validate : function(options) {

			options = $.extend({}, defaults, options);

			return $(this).validateDestroy().each(function() {

				var form = $(this);

				// This is a form?
				if(form.is('form')) {

					form.data(name, {
						options : options
					});

					var

						fields = form.find(allTypes),

						// Events namespace
						namespace = options.namespace;

					if(form.is('[id]')) {

						fields = fields.add('[form="' + form.prop('id') + '"]').filter(allTypes);
					}

					fields = fields.filter(options.filter);

					// If onKeyup is enabled
					if(!!options.onKeyup) {

						fields.filter(type[0]).on('keyup.' + namespace, function(event) {

							validateField.call(this, event, options);
						});
					}

					// If onBlur is enabled
					if(!!options.onBlur) {

						fields.on('blur.' + namespace, function(event) {

							validateField.call(this, event, options);
						});
					}

					// If onChange is enabled
					if(!!options.onChange) {

						fields.on('change.' + namespace, function(event) {

							validateField.call(this, event, options);
						});
					}

					// If onSubmit is enabled
					if(!!options.onSubmit) {

						form.on('submit.' + namespace, function(event) {

							var formValid = true;

							fields.each(function() {

								var status = validateField.call(this, event, options);

								if(!status.pattern || !status.conditional || !status.required) {

									formValid = false;
								}
							});

							// If form is valid
							if(formValid) {

								// Send form?
								if(!options.sendForm) {

									event.preventDefault();
								}

								// Is a function?
								if($.isFunction(options.valid)) {

									options.valid.call(form, event, options);
								}
							} else {

								event.preventDefault();
                event.stopImmediatePropagation();

								// Is a function?
								if($.isFunction(options.invalid)) {

									options.invalid.call(form, event, options);
								}
							}
						});
					}
				}
			});
		},

		// Method to destroy validations
		validateDestroy : function() {

			var

				form = $(this),

				dataValidate = form.data(name);

			// If this is a form
			if(form.is('form') && $.isPlainObject(dataValidate) && typeof(dataValidate.options.nameSpace) == 'string') {

				var fields = form.removeData(name).find(allTypes).add(form);

				if(form.is('[id]')) {

					fields = fields.add($('[form="' + form.prop('id') + '"]').filter(allTypes));
				}

				fields.off('.' + dataValidate.options.nameSpace);
			}

			return form;
		}
	});
})({

	// Send form if is valid?
	sendForm : true,

	// Use WAI-ARIA properties
	waiAria : true,

	// Validate on submit?
	onSubmit : true,

	// Validate on onKeyup?
	onKeyup : false,

	// Validate on onBlur?
	onBlur : false,

	// Validate on onChange?
	onChange : false,

	// Default namespace
	nameSpace : 'validate',

	// Conditional functions
	conditional : {},

	// Prepare functions
	prepare : {},

	// Fields descriptions
	description : {},

	// Callback
	eachField : $.noop,

	// Callback
	eachInvalidField : $.noop,

	// Callback
	eachValidField : $.noop,

	// Callback
	invalid : $.noop,

	// Callback
	valid : $.noop,

	// A fielter to the fields
	filter : '*'
}, jQuery, window);