kMediaGbR / silverstripe-recaptcha

(function (window, document) {

    'use strict';

    function reCaptchaInit() {

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

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

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

        element.type = 'text/javascript';

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

        target.parentNode.insertBefore(element, target);

    }

    function reCaptchaOnloadCallback() {

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

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

            reCaptchaForm().addEventListener('submit', reCaptchaFormOnSubmit);

        }

        grecaptcha.render(reCaptcha, reCaptcha.dataset);

    }

    function reCaptchaOnSubmit(token) {

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

        reCaptchaForm().submit();

    }

    function reCaptchaForm() {

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

    }

    function reCaptchaFormOnSubmit(event) {

        event.preventDefault();

        grecaptcha.execute();

    }

    domReady(reCaptchaInit);

    window.reCaptchaOnloadCallback = reCaptchaOnloadCallback;

    window.reCaptchaOnSubmit = reCaptchaOnSubmit;

})(window, document);