Shortcode for event registrant

/* Begin Adding Functions Below This Line; Do not include an opening PHP tag as this sample code already includes one! */
function register_new_tony_shortcodes( $shortcodes, EE_Shortcodes $lib ) {

    //Add a shortcode to be used with the EE Datetimes within messages
    if ( $lib instanceof EE_Datetime_Shortcodes ) {
        //Add your shortcode to the add as the key, the value should be a description of the shortcode.
        $shortcodes['[EVENT_URL_GENERATE]'] = _('The shortcode to generate the access url');
    }
    //Add a shortcode to be used with the EE Event List within messages
    if ( $lib instanceof EE_Event_Shortcodes ) {
        //Add your shortcode to the add as the key, the value should be a description of the shortcode.
        $shortcodes['[EVENT_URL_GENERATE]'] = _('The shortcode to generate the access url');
    }
    //Return the shortcodes.
    return $shortcodes;
}
add_filter( 'FHEE__EE_Shortcodes__shortcodes', 'register_new_tony_shortcodes', 10, 2 );
function register_new_tony_shortcodes_parser( $parsed, $shortcode, $data, $extra_data, EE_Shortcodes $lib ) {

    //Check for the datetime shortcodes as that's were we added the custom shortcode above
    //also check that $data is the expected object (in this case an EE_Datetime)
    if ( $lib instanceof EE_Datetime_Shortcodes  && $data instanceof EE_Datetime ) {
        //Then check for our specific shortcode
        if ( $shortcode == '[EVENT_URL_GENERATE]' ) {

            //Do whatever you need to do here and return the value for that specific datetime.
            return $data->ID();
        }
    }
    if ( $lib instanceof EE_Event_Shortcodes )
    {
        //Then check for our specific shortcode
        if ( $shortcode == '[EVENT_URL_GENERATE]' )
        {
            //global $wpdb;
            //First check we have an event object.
            $event = $extra_data instanceof EE_Event ? $data : null;
            $aee = $extra_data instanceof EE_Messages_Addressee ? $data : NULL;
            if ($aee !== null) return $aee; else return 'Object not Found';
            $primary_reg = $aee->primary_reg_obj;
            $prmary_attendee = $aee->primary_att_obj;

            if( $primary_reg instanceof EE_Registration )
            {
                //Is a valid EE_Registration object, do something with it here.

            }

            if ( $primary_attendee instanceof EE_Attendee )
            {
                //$primary_attendee is a valid EE_Attendee object, as it's the primary
                //attendee object you can pull the email from it.
                $primary_att_email = $primary_attendee->email();
                return 'Result ' . $primary_att_email;
            }
            //if no event, then let's see if there is a reg_obj.  If there IS, then we'll try and grab the event from the reg_obj instead.
            /*if ( empty( $event ) )
            {
                $aee = $data instanceof EE_Messages_Addressee ? $data : NULL;
                $aee = $extra_data instanceof EE_Messages_Addressee ? $extra_data : $aee;
                $event = $aee instanceof EE_Messages_Addressee && $aee->reg_obj instanceof EE_Registration ? $aee->reg_obj->event() : NULL;
                $event_att =  $aee instanceof EE_Messages_Addressee && $aee->att_obj instanceof EE_Attendee ? $aee->att_obj->email() : NULL;
                $primary_reg = $aee->primary_reg_obj;
                $primary_attendee = $aee->primary_att_obj;
                if ( $primary_attendee instanceof EE_Attendee )
                {
                    //$primary_attendee is a valid EE_Attendee object, as it's the primary
                    //attendee object you can pull the email from it.
                    $primary_att_email = $primary_attendee->email();
                    $message = 'This is a valid attendee object<br/>';
                }
                else
                {
                    $message ='could not find attendee object<br/>';
                }

                $message .= 'Result : <br/> test - '. print_r($aee,true);
                //$result = $wpdb->get_var('SELECT ATT_EMAIL FROM ');
                wp_mail('john-henry@dieselbrook.co.za', 'Debug' , $message);
                return $message;
            }


            //Check we do now actually have the event object.
            if ( !empty( $event ) ) {

                //return $page_id;
            //}
        }
    }
    //If not within the correct section, or parsing the correct shortcode,
    //Return the currently parsed content.
    return $parsed;
}
add_filter( 'FHEE__EE_Shortcodes__parser_after', 'register_new_tony_shortcodes_parser', 10, 5 );