!function(Foundation, $) {
  'use strict';

  /**
   * Creates a new instance of Abide.
   * @class
   * @fires Abide#init
   * @param {Object} element - jQuery object to add the trigger to.
   * @param {Object} options - Overrides to the default plugin settings.
   */
  function Abide(element, options) {
    this.$element = element;
    this.options  = $.extend({}, Abide.defaults, this.$element.data(), options);

    this._init();

    Foundation.registerPlugin(this, 'Abide');
  }

  /**
   * Default settings for plugin
   */
  Abide.defaults = {
    /**
     * The default event to validate inputs. Checkboxes and radios validate immediately.
     * Remove or change this value for manual validation.
     * @option
     * @example 'fieldChange'
     */
    validateOn: 'fieldChange',
    /**
     * Class to be applied to input labels on failed validation.
     * @option
     * @example 'is-invalid-label'
     */
    labelErrorClass: 'is-invalid-label',
    /**
     * Class to be applied to inputs on failed validation.
     * @option
     * @example 'is-invalid-input'
     */
    inputErrorClass: 'is-invalid-input',
    /**
     * Class selector to use to target Form Errors for show/hide.
     * @option
     * @example '.form-error'
     */
    formErrorSelector: '.form-error',
    /**
     * Class added to Form Errors on failed validation.
     * @option
     * @example 'is-visible'
     */
    formErrorClass: 'is-visible',
    /**
     * Set to true to validate text inputs on any value change.
     * @option
     * @example false
     */
    liveValidate: false,

    patterns: {
      alpha : /^[a-zA-Z]+$/,
      alpha_numeric : /^[a-zA-Z0-9]+$/,
      integer : /^[-+]?\d+$/,
      number : /^[-+]?\d*(?:[\.\,]\d+)?$/,

      // amex, visa, diners
      card : /^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$/,
      cvv : /^([0-9]){3,4}$/,

      // http://www.whatwg.org/specs/web-apps/current-work/multipage/states-of-the-type-attribute.html#valid-e-mail-address
      email : /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+$/,

      url : /^(https?|ftp|file|ssh):\/\/(((([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-zA-Z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-zA-Z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-zA-Z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/,
      // abc.de
      domain : /^([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,8}$/,

      datetime : /^([0-2][0-9]{3})\-([0-1][0-9])\-([0-3][0-9])T([0-5][0-9])\:([0-5][0-9])\:([0-5][0-9])(Z|([\-\+]([0-1][0-9])\:00))$/,
      // YYYY-MM-DD
      date : /(?:19|20)[0-9]{2}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-9])|(?:(?!02)(?:0[1-9]|1[0-2])-(?:30))|(?:(?:0[13578]|1[02])-31))$/,
      // HH:MM:SS
      time : /^(0[0-9]|1[0-9]|2[0-3])(:[0-5][0-9]){2}$/,
      dateISO : /^\d{4}[\/\-]\d{1,2}[\/\-]\d{1,2}$/,
      // MM/DD/YYYY
      month_day_year : /^(0[1-9]|1[012])[- \/.](0[1-9]|[12][0-9]|3[01])[- \/.]\d{4}$/,
      // DD/MM/YYYY
      day_month_year : /^(0[1-9]|[12][0-9]|3[01])[- \/.](0[1-9]|1[012])[- \/.]\d{4}$/,

      // #FFF or #FFFFFF
      color : /^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/
    },
    /**
     * Optional validation functions to be used. `equalTo` being the only default included function.
     * Functions should return only a boolean if the input is valid or not. Functions are given the following arguments:
     * el : The jQuery element to validate.
     * required : Boolean value of the required attribute be present or not.
     * parent : The direct parent of the input.
     * @option
     */
    validators: {
      equalTo: function (el, required, parent) {
        return $('#' + el.attr('data-equalto')).val() === el.val();
      }
    }
  };


  /**
   * Initializes the Abide plugin and calls functions to get Abide functioning on load.
   * @private
   */
  Abide.prototype._init = function(){
    this.$inputs = this.$element.find('input, textarea, select').not('[data-abide-ignore]');

    this._events();
  };

  /**
   * Initializes events for Abide.
   * @private
   */
  Abide.prototype._events = function() {
    var _this = this;

    this.$element.off('.abide')
        .on('reset.zf.abide', function(e){
          _this.resetForm();
        })
        .on('submit.zf.abide', function(e){
          return _this.validateForm();
        });

    if(this.options.validateOn === 'fieldChange'){
        this.$inputs.off('change.zf.abide')
            .on('change.zf.abide', function(e){
              _this.validateInput($(this));
            });
    }

    if(this.options.liveValidate){
      this.$inputs.off('input.zf.abide')
          .on('input.zf.abide', function(e){
            _this.validateInput($(this));
          });
    }
  },
  /**
   * Calls necessary functions to update Abide upon DOM change
   * @private
   */
  Abide.prototype._reflow = function() {
    this._init();
  };
  /**
   * Checks whether or not a form element has the required attribute and if it's checked or not
   * @param {Object} element - jQuery object to check for required attribute
   * @returns {Boolean} Boolean value depends on whether or not attribute is checked or empty
   */
  Abide.prototype.requiredCheck = function($el) {
    if(!$el.attr('required')) return true;
    var isGood = true;
    switch ($el[0].type) {

      case 'checkbox':
      case 'radio':
        isGood = $el[0].checked;
        break;

      case 'select':
      case 'select-one':
      case 'select-multiple':
        var opt = $el.find('option:selected');
        if(!opt.length || !opt.val()) isGood = false;
        break;

      default:
        if(!$el.val() || !$el.val().length) isGood = false;
    }
    return isGood;
  };
  /**
   * Based on $el, get the first element with selector in this order:
   * 1. The element's direct sibling('s).
   * 3. The element's parent's children.
   *
   * This allows for multiple form errors per input, though if none are found, no form errors will be shown.
   *
   * @param {Object} $el - jQuery object to use as reference to find the form error selector.
   * @returns {Object} jQuery object with the selector.
   */
  Abide.prototype.findFormError = function($el){
    var $error = $el.siblings(this.options.formErrorSelector);
    if(!$error.length){
      $error = $el.parent().find(this.options.formErrorSelector);
    }
    return $error;
  };
  /**
   * Get the first element in this order:
   * 2. The <label> with the attribute `[for="someInputId"]`
   * 3. The `.closest()` <label>
   *
   * @param {Object} $el - jQuery object to check for required attribute
   * @returns {Boolean} Boolean value depends on whether or not attribute is checked or empty
   */
  Abide.prototype.findLabel = function($el) {
    var $label = this.$element.find('label[for="' + $el[0].id + '"]');
    if(!$label.length){
      return $el.closest('label');
    }
    return $label;
  };
  /**
   * Adds the CSS error class as specified by the Abide settings to the label, input, and the form
   * @param {Object} $el - jQuery object to add the class to
   */
  Abide.prototype.addErrorClasses = function($el){
    var $label = this.findLabel($el),
        $formError = this.findFormError($el);

    if($label.length){
      $label.addClass(this.options.labelErrorClass);
    }
    if($formError.length){
      $formError.addClass(this.options.formErrorClass);
    }
    $el.addClass(this.options.inputErrorClass).attr('data-invalid', '');
  };
  /**
   * Removes CSS error class as specified by the Abide settings from the label, input, and the form
   * @param {Object} $el - jQuery object to remove the class from
   */
  Abide.prototype.removeErrorClasses = function($el){
    var $label = this.findLabel($el),
        $formError = this.findFormError($el);

    if($label.length){
      $label.removeClass(this.options.labelErrorClass);
    }
    if($formError.length){
      $formError.removeClass(this.options.formErrorClass);
    }
    $el.removeClass(this.options.inputErrorClass).removeAttr('data-invalid');
  };
  /**
   * Goes through a form to find inputs and proceeds to validate them in ways specific to their type
   * @fires Abide#invalid
   * @fires Abide#valid
   * @param {Object} element - jQuery object to validate, should be an HTML input
   * @returns {Boolean} goodToGo - If the input is valid or not.
   */
  Abide.prototype.validateInput = function($el){
    var clearRequire = this.requiredCheck($el),
        validated = false,
        customValidator = true,
        validator = $el.attr('data-validator'),
        equalTo = true;

    switch ($el[0].type) {

      case 'radio':
        validated = this.validateRadio($el.attr('name'));
        break;

      case 'checkbox':
        validated = clearRequire;
        break;

      case 'select':
      case 'select-one':
      case 'select-multiple':
        validated = clearRequire;
        break;

      default:
        validated = this.validateText($el);
    }

    if(validator){ customValidator = this.matchValidation($el, validator, $el.attr('required')); }
    if($el.attr('data-equalto')){ equalTo = this.options.validators.equalTo($el); }

    var goodToGo = [clearRequire, validated, customValidator, equalTo].indexOf(false) === -1,
        message = (goodToGo ? 'valid' : 'invalid') + '.zf.abide';

    this[goodToGo ? 'removeErrorClasses' : 'addErrorClasses']($el);

    /**
     * Fires when the input is done checking for validation. Event trigger is either `valid.zf.abide` or `invalid.zf.abide`
     * Trigger includes the DOM element of the input.
     * @event Abide#valid
     * @event Abide#invalid
     */
    $el.trigger(message, [$el]);

    return goodToGo;
  };
  /**
   * Goes through a form and if there are any invalid inputs, it will display the form error element
   * @returns {Boolean} noError - true if no errors were detected...
   * @fires Abide#formvalid
   * @fires Abide#forminvalid
   */
  Abide.prototype.validateForm = function(){
    var acc = [],
        _this = this;

    this.$inputs.each(function(){
      acc.push(_this.validateInput($(this)));
    });

    var noError = acc.indexOf(false) === -1;

    this.$element.find('[data-abide-error]').css('display', (noError ? 'none' : 'block'));
        /**
         * Fires when the form is finished validating. Event trigger is either `formvalid.zf.abide` or `forminvalid.zf.abide`.
         * Trigger includes the element of the form.
         * @event Abide#formvalid
         * @event Abide#forminvalid
         */
    this.$element.trigger((noError ? 'formvalid' : 'forminvalid') + '.zf.abide', [this.$element]);

    return noError;
  };
  /**
   * Determines whether or a not a text input is valid based on the pattern specified in the attribute. If no matching pattern is found, returns true.
   * @param {Object} $el - jQuery object to validate, should be a text input HTML element
   * @param {String} pattern - string value of one of the RegEx patterns in Abide.options.patterns
   * @returns {Boolean} Boolean value depends on whether or not the input value matches the pattern specified
   */
   Abide.prototype.validateText = function($el, pattern){
     // pattern = pattern ? pattern : $el.attr('pattern') ? $el.attr('pattern') : $el.attr('type');
     pattern = (pattern || $el.attr('pattern') || $el.attr('type'));
     var inputText = $el.val();

     return inputText.length ?//if text, check if the pattern exists, if so, test it, if no text or no pattern, return true.
            this.options.patterns.hasOwnProperty(pattern) ? this.options.patterns[pattern].test(inputText) :
            pattern && pattern !== $el.attr('type') ? new RegExp(pattern).test(inputText) : true : true;
   };  /**
   * Determines whether or a not a radio input is valid based on whether or not it is required and selected
   * @param {String} groupName - A string that specifies the name of a radio button group
   * @returns {Boolean} Boolean value depends on whether or not at least one radio input has been selected (if it's required)
   */
  Abide.prototype.validateRadio = function(groupName){
    var $group = this.$element.find(':radio[name="' + groupName + '"]'),
        counter = [],
        _this = this;

    $group.each(function(){
      var rdio = $(this),
          clear = _this.requiredCheck(rdio);
      counter.push(clear);
      if(clear) _this.removeErrorClasses(rdio);
    });

    return counter.indexOf(false) === -1;
  };
  /**
   * Determines if a selected input passes a custom validation function. Multiple validations can be used, if passed to the element with `data-validator="foo bar baz"` in a space separated listed.
   * @param {Object} $el - jQuery input element.
   * @param {String} validators - a string of function names matching functions in the Abide.options.validators object.
   * @param {Boolean} required - self explanatory?
   * @returns {Boolean} - true if validations passed.
   */
  Abide.prototype.matchValidation = function($el, validators, required){
    var _this = this;
    required = required ? true : false;
    var clear = validators.split(' ').map(function(v){
      return _this.options.validators[v]($el, required, $el.parent());
    });
    return clear.indexOf(false) === -1;
  };
  /**
   * Resets form inputs and styles
   * @fires Abide#formreset
   */
  Abide.prototype.resetForm = function() {
    var $form = this.$element,
        opts = this.options;

    $('.' + opts.labelErrorClass, $form).not('small').removeClass(opts.labelErrorClass);
    $('.' + opts.inputErrorClass, $form).not('small').removeClass(opts.inputErrorClass);
    $(opts.formErrorSelector + '.' + opts.formErrorClass).removeClass(opts.formErrorClass);
    $form.find('[data-abide-error]').css('display', 'none');
    $(':input', $form).not(':button, :submit, :reset, :hidden, [data-abide-ignore]').val('').removeAttr('data-invalid');
    /**
     * Fires when the form has been reset.
     * @event Abide#formreset
     */
    $form.trigger('formreset.zf.abide', [$form]);
  };
  /**
   * Destroys an instance of Abide.
   * Removes error styles and classes from elements, without resetting their values.
   */
  Abide.prototype.destroy = function(){
    var _this = this;
    this.$element.off('.abide')
        .find('[data-abide-error]').css('display', 'none');
    this.$inputs.off('.abide')
        .each(function(){
          _this.removeErrorClasses($(this));
        });

    Foundation.unregisterPlugin(this);
  };

  Foundation.plugin(Abide, 'Abide');

  // Exports for AMD/Browserify
  if (typeof module !== 'undefined' && typeof module.exports !== 'undefined')
    module.exports = Abide;
  if (typeof define === 'function')
    define(['foundation'], function() {
      return Abide;
    });

}(Foundation, jQuery);