ss', 'profilepress-login-status', $login_form_id);

            $login_username = ! empty($data['tabbed-login-name']) ? $data['tabbed-login-name'] : $data['login_username'];
            $login_password = ! empty($data['tabbed-login-password']) ? $data['tabbed-login-password'] : $data['login_password'];
            $login_remember = ! empty($data['tabbed-login-remember-me']) ? $data['tabbed-login-remember-me'] : $data['login_remember'];

            $login_username = trim($login_username);
            $login_remember = sanitize_text_field($login_remember);

            $login_redirect = ! empty($data['login_redirect']) ? sanitize_text_field($data['login_redirect']) : '';
            if ( ! empty($data['melange_redirect'])) {
                $login_redirect = sanitize_text_field($data['melange_redirect']);
            }

            /** @var \WP_Error|string $response */
            $response = LoginAuth::login_auth($login_username, $login_password, $login_remember, $login_form_id, $login_redirect);

            $ajax_response = array('success' => true, 'redirect' => $response);

            if (isset($response) && is_wp_error($response)) {
                $login_error = '<div class="' . esc_attr($login_status_css_class) . '">';
                $login_error .= $response->get_error_message();
                $login_error .= '</div>';

                $ajax_response = [
                    'success' => false,
                    'code'    => $response->get_error_code(),
                    'message' => $login_error
                ];
            }

            wp_send_json($ajax_response);
        }

        wp_die();
    }

    function ajax_signup_func()
    {
        if ( ! defined('W3GUY_LOCAL') && is_user_logged_in()) wp_send_json_error();

        if (isset($_REQUEST)) {

            $is_melange = ( ! empty($_POST['is_melange']) && $_POST['is_melange'] == 'true');

            $form_id = ! empty($_POST['melange_id']) ? $_POST['melange_id'] : ($_POST['signup_form_id'] ?? '');
            $form_id = absint($form_id);

            $redirect = ppressPOST_var('signup_redirect', '', true);
            if ( ! empty($_POST['melange_redirect'])) {
                $redirect = sanitize_text_field($_POST['melange_redirect']);
            }

            $no_login_redirect = sanitize_text_field($_POST['signup_no_login_redirect'] ?? '');

            // if this is tab widget.
            if (isset($_POST['is-pp-tab-widget']) && $_POST['is-pp-tab-widget'] == 'true') {
                $widget_status = @TabbedWidgetDependency::registration(
                    $_POST['tabbed-reg-username'],
                    $_POST['tabbed-reg-password'],
                    $_POST['tabbed-reg-email']
                );

                if ( ! empty($widget_status)) {
                    $response = '<div class="pp-tab-status">' . $widget_status . '</div>';
                }

            } else {
                $response = RegistrationAuth::register_new_user($_POST, $form_id, $redirect, $is_melange, $no_login_redirect);
            }

            // display form generated messages
            if ( ! empty($response)) {
                if (is_array($response)) {
                    $ajax_response = ['redirect' => $response[0]];
                } else {
                    $ajax_response = ['message' => wp_kses_post(html_entity_decode($response))];
                }

                wp_send_json($ajax_response);
            }
        }

        wp_die();
    }

    function ajax_passwordreset_func()
    {
        if (isset($_REQUEST['data'])) {
            parse_str($_REQUEST['data'], $data);

            // populate global $_POST and $_REQUEST variable.
            $_POST = $_REQUEST = $data;

            // variable is populated by parse_str()
            $user_login = ! empty($data['tabbed-user-login']) ? $data['tabbed-user-login'] : ppress_var($data, 'user_login', '');
            $user_login = sanitize_text_field($user_login);

            $is_melange = ( ! empty($_POST['is_melange']) && $_POST['is_melange'] == 'true');

            $form_id = ! empty($data['melange_id']) ? $data['melange_id'] : $data['passwordreset_form_id'];
            $form_id = absint($form_id);

            // do password reset
            if ( ! empty($data['reset_key']) && ! empty($data['reset_login'])) {
                // needed for checking if this is for do password reset.
                $_REQUEST['reset_password'] = true;
                $response                   = PasswordReset::do_password_reset();
            } else {
                // response is WP_Error on error or redirect url on success.
                $response = PasswordReset::password_reset_status($user_login, $form_id, $is_melange);
            }

            $ajax_response            = array();
            $ajax_response['status']  = is_array($response) ? true : false;
            $ajax_response['message'] = is_array($response) ? wp_kses_post(html_entity_decode($response[0])) : wp_kses_post(html_entity_decode($response));

            wp_send_json($ajax_response);
        }

        wp_die();
    }

    function ajax_editprofile_func()
    {
        if (isset($_REQUEST)) {

            $is_melange = ( ! empty($_POST['is_melange']) && $_POST['is_melange'] == 'true');

            $form_id = absint(! empty($_POST['melange_id']) ? $_POST['melange_id'] : ppressPOST_var('editprofile_form_id'));

            $redirect = ppressPOST_var('editprofile_redirect', '', true);

            if ( ! empty($_POST['melange_redirect'])) {
                $redirect = esc_url_raw($_POST['melange_redirect']);
            }

            // check to see if the submitted nonce matches with the generated nonce we created earlier
            if ( ! wp_verify_nonce($_REQUEST['nonce'], 'ppress-frontend-nonce')) {

                wp_send_json([
                    'success' => false,
                    'message' => '<div class="profilepress-edit-profile-status">' . esc_html__('Security validation failed. Try again', 'wp-user-avatar') . '</div>'
                ]);
            }

            $response = EditUserProfile::process_func($form_id, $redirect, $is_melange);

            // display form generated messages
            if (isset($response) && is_array($response)) {
                wp_send_json($response);
            }
        }

        wp_die();
    }

    public static function get_instance()
    {
        static $instance = null;

        if (is_null($instance)) {
            $instance = new self();
        }

        return $instance;
    }
}