/**
 * jQuery Form Validator Module: Security
 * ------------------------------------------
 * Created by Victor Jonsson <http://victorjonsson.se>
 *
 * This module adds validators typically used in registration forms.
 * This module adds the following validators:
 *  - spamcheck
 *  - confirmation
 *  - strength
 *  - backend
 *  - credit card
 *  - cvv
 *
 * @website http://formvalidator.net/#security-validators
 * @license MIT
 */
(function ($, window) {

  'use strict';

  $.formUtils.registerLoadedModule('security');

  /*
   * Simple spam check
   */
  $.formUtils.addValidator({
    name: 'spamcheck',
    validatorFunction: function (val, $el) {
      var attr = $el.valAttr('captcha');
      return attr === val;
    },
    errorMessage: '',
    errorMessageKey: 'badSecurityAnswer'
  });

  /*
   * Validate confirmation (tests that two inputs are identical; usually used for
   * passwords)
   */
  $.formUtils.addValidator({
    name: 'confirmation',
    validatorFunction: function (value, $el, config, language, $form) {
      var password,
        passwordInputName = $el.valAttr('confirm') ||
          ($el.attr('name') + '_confirmation'),
        $passwordInput = $form.find('[name="' + passwordInputName + '"]');
      if (!$passwordInput.length) {
        $.formUtils.warn('Password confirmation validator: could not find an input ' +
          'with name "' + passwordInputName + '"', true);
        return false;
      }

      password = $passwordInput.val();
      if (config.validateOnBlur && !$passwordInput[0].hasValidationCallback) {
        $passwordInput[0].hasValidationCallback = true;
        var keyUpCallback = function () {
          $el.validate();
        };
        $passwordInput.on('keyup', keyUpCallback);
        $form.one('formValidationSetup', function () {
          $passwordInput[0].hasValidationCallback = false;
          $passwordInput.off('keyup', keyUpCallback);
        });
      }

      return value === password;
    },
    errorMessage: '',
    errorMessageKey: 'notConfirmed'
  });

  var creditCards = {
      'amex': [15, 15],
      'diners_club': [14, 14],
      'cjb': [16, 16],
      'laser': [16, 19],
      'visa': [16, 16],
      'mastercard': [16, 16],
      'maestro': [12, 19],
      'discover': [16, 16]
    },
    checkOnlyAmex = false,
    allowsAmex = false;

  /*
   * Credit card
   */
  $.formUtils.addValidator({
    name: 'creditcard',
    validatorFunction: function (value, $el) {
      var allowing = $.split($el.valAttr('allowing') || '');

      // Setup for cvv validation
      allowsAmex = $.inArray('amex', allowing) > -1;
      checkOnlyAmex = allowsAmex && allowing.length === 1;

      // Correct length
      if (allowing.length > 0) {
        var hasValidLength = false;
        $.each(allowing, function (i, cardName) {
          if (cardName in creditCards) {
            if (value.length >= creditCards[cardName][0] && value.length <= creditCards[cardName][1]) {
              hasValidLength = true;
              return false;
            }
          } else {
            $.formUtils.warn('Use of unknown credit card "' + cardName + '"', true);
          }
        });

        if (!hasValidLength) {
          return false;
        }
      }

      // only numbers
      if (value.replace(new RegExp('[0-9]', 'g'), '') !== '') {
        return false;
      }

      // http://en.wikipedia.org/wiki/Luhn_algorithm
      // http://www.brainjar.com/js/validation/default2.asp
      var checkSum = 0;
      $.each(value.split('').reverse(), function (i, digit) {
        digit = parseInt(digit, 10);
        if (i % 2 === 0) {
          checkSum += digit;
        } else {
          digit *= 2;
          if (digit < 10) {
            checkSum += digit;
          } else {
            checkSum += digit - 9;
          }
        }
      });
      return checkSum % 10 === 0;
    },
    errorMessage: '',
    errorMessageKey: 'badCreditCard'
  });

  /*
   * Credit card number
   */
  $.formUtils.addValidator({
    name: 'cvv',
    validatorFunction: function (val) {
      if (val.replace(/[0-9]/g, '') === '') {
        val = val + '';
        if (checkOnlyAmex) {
          return val.length === 4;
        } else if (allowsAmex) {
          return val.length === 3 || val.length === 4;
        } else {
          return val.length === 3;
        }
      }
      return false;
    },
    errorMessage: '',
    errorMessageKey: 'badCVV'
  });

  /*
   * Validate password strength
   */
  $.formUtils.addValidator({
    name: 'strength',
    validatorFunction: function (val, $el) {
      var requiredStrength = $el.valAttr('strength') || 2;
      if (requiredStrength && requiredStrength > 3) {
        requiredStrength = 3;
      }

      return $.formUtils.validators.validate_strength.calculatePasswordStrength(val) >= requiredStrength;
    },
    errorMessage: '',
    errorMessageKey: 'badStrength',

    /**
     * Code more or less borrowed from jQuery plugin "Password Strength Meter"
     * written by Darren Mason (djmason9@gmail.com), myPocket technologies (www.mypocket-technologies.com)
     * @param {String} password
     * @return {Number}
     */
    calculatePasswordStrength: function (password) {

      if (password.length < 4) {
        return 0;
      }

      var score = 0;

      var checkRepetition = function (pLen, str) {
        var res = '';
        for (var i = 0; i < str.length; i++) {
          var repeated = true;

          for (var j = 0; j < pLen && (j + i + pLen) < str.length; j++) {
            repeated = repeated && (str.charAt(j + i) === str.charAt(j + i + pLen));
          }
          if (j < pLen) {
            repeated = false;
          }
          if (repeated) {
            i += pLen - 1;
            repeated = false;
          }
          else {
            res += str.charAt(i);
          }
        }
        return res;
      };

      //password length
      score += password.length * 4;
      score += ( checkRepetition(1, password).length - password.length ) * 1;
      score += ( checkRepetition(2, password).length - password.length ) * 1;
      score += ( checkRepetition(3, password).length - password.length ) * 1;
      score += ( checkRepetition(4, password).length - password.length ) * 1;

      //password has 3 numbers
      if (password.match(/(.*[0-9].*[0-9].*[0-9])/)) {
        score += 5;
      }

      //password has 2 symbols
      if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) {
        score += 5;
      }

      //password has Upper and Lower chars
      if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)) {
        score += 10;
      }

      //password has number and chars
      if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/)) {
        score += 15;
      }
      //
      //password has number and symbol
      if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([0-9])/)) {
        score += 15;
      }

      //password has char and symbol
      if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([a-zA-Z])/)) {
        score += 15;
      }

      //password is just a numbers or chars
      if (password.match(/^\w+$/) || password.match(/^\d+$/)) {
        score -= 10;
      }

      //verifying 0 < score < 100
      if (score < 0) {
        score = 0;
      }
      if (score > 100) {
        score = 100;
      }

      if (score < 20) {
        return 0;
      }
      else if (score < 40) {
        return 1;
      }
      else if (score <= 60) {
        return 2;
      }
      else {
        return 3;
      }
    },

    strengthDisplay: function ($el, options) {
      var config = {
        fontSize: '12pt',
        padding: '4px',
        bad: 'Very bad',
        weak: 'Weak',
        good: 'Good',
        strong: 'Strong'
      };

      if (options) {
        $.extend(config, options);
      }

      $el.bind('keyup', function () {
        var val = $(this).val(),
          $parent = typeof config.parent === 'undefined' ? $(this).parent() : $(config.parent),
          $displayContainer = $parent.find('.strength-meter'),
          strength = $.formUtils.validators.validate_strength.calculatePasswordStrength(val),
          css = {
            background: 'pink',
            color: '#FF0000',
            fontWeight: 'bold',
            border: 'red solid 1px',
            borderWidth: '0px 0px 4px',
            display: 'inline-block',
            fontSize: config.fontSize,
            padding: config.padding
          },
          text = config.bad;

        if ($displayContainer.length === 0) {
          $displayContainer = $('<span></span>');
          $displayContainer
            .addClass('strength-meter')
            .appendTo($parent);
        }

        if (!val) {
          $displayContainer.hide();
        } else {
          $displayContainer.show();
        }

        if (strength === 1) {
          text = config.weak;
        }
        else if (strength === 2) {
          css.background = 'lightyellow';
          css.borderColor = 'yellow';
          css.color = 'goldenrod';
          text = config.good;
        }
        else if (strength >= 3) {
          css.background = 'lightgreen';
          css.borderColor = 'darkgreen';
          css.color = 'darkgreen';
          text = config.strong;
        }

        $displayContainer
          .css(css)
          .text(text);
      });
    }
  });

  var requestServer = function (serverURL, $element, val, conf, callback) {
      var reqParams = $element.valAttr('req-params') || $element.data('validation-req-params') || {},
        inputName = $element.valAttr('param-name') || $element.attr('name'),
        handleResponse = function (response, callback) {
          callback(response);
        };

      if (!inputName) {
        throw new Error('Missing input name used for http requests made by server validator');
      }
      if (!reqParams) {
        reqParams = {};
      }
      if (typeof reqParams === 'string') {
        reqParams = $.parseJSON(reqParams);
      }
      reqParams[inputName] = val;

      $.ajax({
        url: serverURL,
        type: 'POST',
        cache: false,
        data: reqParams,
        dataType: 'json',
        error: function (error) {
          handleResponse({valid: false, message: 'Connection failed with status: ' + error.statusText}, callback);
          return false;
        },
        success: function (response) {
          handleResponse(response, callback);
        }
      });
    };

  /*
   * Server validation
   */
  $.formUtils.addAsyncValidator({
    name: 'server',
    validatorFunction: function (done, val, $input, conf, lang, $form) {
      var serverURL = $input.valAttr('url') || conf.backendUrl || document.location.href;
      // @todo: deprecated class names that should be removed when moving up to 3.0
      $form.addClass('validating-server-side');
      $input.addClass('validating-server-side');
      requestServer(serverURL, $input, val, conf, function (response) {
        $form.removeClass('validating-server-side');
        $input.removeClass('validating-server-side');
        if (response.message) {
          $input.attr(conf.validationErrorMsgAttribute, response.message);
        }
        done(response.valid);
      });
    },
    errorMessage: '',
    errorMessageKey: 'badBackend'
  });

  /*
   * Check for only letters and numbers
   *
   * http://www.slovo.info/testuni.htm
   */
  $.formUtils.addValidator({
    name: 'letternumeric',
    validatorFunction: function (val, $el, config, language) {
      var patternStart = '^([a-zA-Z0-9\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC',
        patternEnd = ']+)$',
        additionalChars = $el.valAttr('allowing'),
        pattern = '';

      if (additionalChars) {
        pattern = patternStart + additionalChars + patternEnd;
        var extra = additionalChars.replace(/\\/g, '');
        if (extra.indexOf(' ') > -1) {
          extra = extra.replace(' ', '');
          extra += language.andSpaces || $.formUtils.LANG.andSpaces;
        }
        this.errorMessage = language.badAlphaNumeric + language.badAlphaNumericExtra + extra;
      } else {
        pattern = patternStart + patternEnd;
        this.errorMessage = language.badAlphaNumeric;
      }

      return new RegExp(pattern).test(val);
    },
    errorMessage: '',
    errorMessageKey: 'requiredFields'
  });

  /*
   * Check password content depending on following parameters:
   *    data-validation-require-uc-letter,
   *    data-validation-require-lc-letter,
   *    data-validation-require-special-char,
   *    data-validation-require-numeral
  */
  $.formUtils.addValidator({
    name : 'complexity',
    validatorFunction : function(value, $input, config, language) {
      var numRequiredUppercaseChars = $input.valAttr('require-uc-letter') || '0',
        numRequiredLowercaseChars = $input.valAttr('require-lc-letter') || '0',
        numRequiredSpecialChars = $input.valAttr('require-special-char') || '0',
        numRequiredNumericChars = $input.valAttr('require-numeral') || '0',
        numRequiredCharsTotal = $input.valAttr('require-length') || '0',
        subValidators = {
          'uc-letter': {
            pattern: '^(?=(?:.*[A-Z]){'+numRequiredUppercaseChars+',}).+',
            numRequired: numRequiredUppercaseChars,
            dialogEnd: language.passwordComplexityUppercaseInfo
          },
          'lc-letter': {
            pattern: '^(?=(?:.*[a-z]){'+numRequiredLowercaseChars+',}).+',
            numRequired: numRequiredLowercaseChars,
            dialogEnd: language.passwordComplexityLowercaseInfo
          },
          'special-char': {
            pattern: '^(?=(?:.*(_|[!"#$%&\'()*+\\\\,-./:;<=>?@[\\]^_`{|}~])){'+numRequiredSpecialChars+',}).+',
            numRequired: numRequiredSpecialChars,
            dialogEnd: language.passwordComplexitySpecialCharsInfo
          },
          'numeral': {
            pattern: '^(?=(?:.*\\d){'+numRequiredNumericChars+',}).+',
            numRequired: numRequiredNumericChars,
            dialogEnd: language.passwordComplexityNumericCharsInfo
          },
          'length': {
            callback: function(val) {
              return val.length >= numRequiredCharsTotal;
            },
            numRequired: numRequiredCharsTotal,
            dialogEnd: language.lengthBadEnd
          }
        },
        errorMessage = '';

      $.each(subValidators, function(name, subValidator) {
        var numRequired = parseInt(subValidator.numRequired, 10);
        if (numRequired) {
          var regexp = new RegExp(subValidator.pattern),
            valid = false;

          if (subValidator.callback) {
            valid = subValidator.callback(value);
          } else {
            valid = regexp.test(value);
          }

          if (!valid) {
            if (errorMessage === '') {
              errorMessage = language.passwordComplexityStart;
            }
            errorMessage += language.passwordComplexitySeparator + numRequired + subValidator.dialogEnd;
            $input.trigger('complexityRequirementValidation', [false, name]);
          } else {
            $input.trigger('complexityRequirementValidation', [true, name]);
          }
        }
      });
      if (errorMessage) {
        this.errorMessage = errorMessage + language.passwordComplexityEnd;
        return false;
      } else {
        return true;
      }
    },
    errorMessage : '',
    errorMessageKey: ''
  });

  /*
   * Google reCaptcha 2
   */
  $.formUtils.addValidator({
    name: 'recaptcha',
    validatorFunction: function (val, $el) {
      return grecaptcha.getResponse($el.valAttr('recaptcha-widget-id')) !== '';
    },
    errorMessage: '',
    errorMessageKey: 'badreCaptcha'
  });

  $.fn.displayPasswordStrength = function (conf) {
    new $.formUtils.validators.validate_strength.strengthDisplay(this, conf);
    return this;
  };

  var setupGooglereCaptcha = function (evt, $forms, config) {
    if (!$forms) {
      $forms = $('form');
    }
    if (typeof grecaptcha !== 'undefined' && !$.formUtils.hasLoadedGrecaptcha) {
      throw new Error('reCaptcha API can not be loaded by hand, delete reCaptcha API snippet.');
    } else if (!$.formUtils.hasLoadedGrecaptcha && $('[data-validation~="recaptcha"]', $forms).length) {
      $.formUtils.hasLoadedGrecaptcha = true;

      var src = '//www.google.com/recaptcha/api.js?onload=reCaptchaLoaded&render=explicit' + (config.lang ? '&hl=' + config.lang : '');
      var script = document.createElement('script');
      script.type = 'text/javascript';
      script.async = true;
      script.defer = true;
      script.src = src;
      document.getElementsByTagName('body')[0].appendChild(script);
    }
  };

  window.reCaptchaLoaded = function ($forms) {
    if (!$forms || typeof $forms !== 'object' || !$forms.length) {
      $forms = $('form');
    }

    $forms.each(function () {
      var $form = $(this),
        config = $form.get(0).validationConfig || $form.context.validationConfig || false;

      if (config) {
        $('[data-validation~="recaptcha"]', $form).each(function () {
          var $input = $(this),
            div = document.createElement('DIV'),
            siteKey = config.reCaptchaSiteKey || $input.valAttr('recaptcha-sitekey'),
            theme = config.reCaptchaTheme || $input.valAttr('recaptcha-theme') || 'light',
            size = config.reCaptchaSize || $input.valAttr('recaptcha-size') || 'normal',
            type = config.reCaptchaType || $input.valAttr('recaptcha-type') || 'image';

          if (!siteKey) {
            throw new Error('Google reCaptcha site key is required.');
          }

          var widgetId = grecaptcha.render(div, {
            sitekey: siteKey,
            theme: theme,
            size: size,
            type: type,
            callback: function (result) {
              $form.find('[data-validation~="recaptcha"]')
                .trigger('validation', (result && result !== ''));

            },
            'expired-callback': function() {
              $form.find('[data-validation~="recaptcha"]').trigger('validation', false);
            }
          });
          $input
            .valAttr('recaptcha-widget-id', widgetId)
            .hide()
            .on('beforeValidation', function (evt) {
              // prevent validator from skipping this input because its hidden
              evt.stopImmediatePropagation();
            })
            .parent()
            .append(div);
        });
      }
    });
  };

  $(window).on('validatorsLoaded formValidationSetup', setupGooglereCaptcha);

})(jQuery, window);
