kMediaGbR / silverstripe-recaptcha

(function (window, document) {

    'use strict';

    function init() {

        var element = document.createElement('script'),

            target = document.querySelectorAll('script')[0];

        element.type = 'text/javascript';

        element.src = httpProtocol() + '://www.google.com/recaptcha/api.js?onload=reCaptchaOnloadCallback&render=explicit&hl='.concat(window.SS_LOCALE);

        target.parentNode.insertBefore(element, target);

    }

    function httpProtocol() {

        return 'https:' == document.location.protocol ? 'https' : 'http';

    }

    function callback() {

        var reCaptcha = document.querySelector('.g-recaptcha');

        if (reCaptcha.dataset.size === 'invisible') {

            form().addEventListener('submit', formOnSubmit);

        }

        grecaptcha.render(reCaptcha, reCaptcha.dataset);

    }

    function submit(token) {

        document.querySelector('#'.concat(window.ReCaptchaFormId, ' .g-recaptcha-response')).value = token;

        form().submit();

    }

    function form() {

        return document.querySelector('#'.concat(window.ReCaptchaFormId));

    }

    function formOnSubmit(event) {

        event.preventDefault();

        grecaptcha.execute();

    }

    domReady(init);

    window.reCaptchaOnloadCallback = callback;

    window.reCaptchaOnSubmit = submit;

})(window, document);