function recaptchaHelper() {}

recaptchaHelper.prototype = {
    siteKey: window.RECAPTCHA_SITE_KEY || null,

    getToken: function(callback) {
        if (typeof grecaptcha === 'undefined') {
            console.error('reCAPTCHA not loaded');
            callback(null, 'reCAPTCHA not loaded');
            return;
        }

        window.onReCaptchaSuccess = function(token) {
            callback(token);
        };

        grecaptcha.execute();
    },

    attachTokenToData: function(data, callback) {
        this.getToken(function(token, error) {
            if (error || !token) {
                callback(data, error || 'No token received');
                return;
            }

            data['recaptcha_token'] = token;
            callback(data);
        });
    },

    submitWithRecaptcha: function(url, data, successCallback, errorCallback) {
        this.attachTokenToData(data, function(dataWithToken, error) {
            if (error) {
                if (typeof errorCallback === 'function') {
                    errorCallback(error);
                }
                return;
            }

            $.ajax({
                url: url,
                method: 'post',
                dataType: 'json',
                data: dataWithToken,
                success: successCallback,
                error: function(xhr, status, err) {
                    if (typeof errorCallback === 'function') {
                        errorCallback(err || status);
                    }
                }
            });
        });
    }
};

// Instância global
var recaptchaHelper = new recaptchaHelper();