Funnelkit Automation Referral Tag

functions.php

<?php

if (!bwfan_is_autonami_pro_active() || version_compare(BWFAN_PRO_VERSION, '2.0.3', '>=')) {
    class BWFAN_Contact_Referral_ID extends BWFAN_Merge_Tag {

        private static $instance = null;

        public function __construct() {
            $this->tag_name        = 'contact_referral_id';
            $this->tag_description = __('Contact Referral ID', 'wp-marketing-automations');
            add_shortcode('bwfan_contact_referral_id', array($this, 'parse_shortcode'));
            $this->priority         = 19;
            $this->is_crm_broadcast = true;
        }

        public static function get_instance() {
            if (null === self::$instance) {
                self::$instance = new self();
            }

            return self::$instance;
        }

        /**
         * Parse the merge tag and return its value.
         *
         * @param $attr
         *
         * @return mixed|string|void
         */
        public function parse_shortcode($attr) {
            $get_data = BWFAN_Merge_Tag_Loader::get_data();
            if (true === $get_data['is_preview']) {
                return $this->parse_shortcode_output($this->get_dummy_preview(), $attr);
            }

            /** If Contact ID available */
            $cid = isset($get_data['contact_id']) ? $get_data['contact_id'] : '';
            $referral_id = $this->get_referral_id($cid);
            if (!empty($referral_id)) {
                return $this->parse_shortcode_output($referral_id, $attr);
            }

            /** If order */
            $order = $this->get_order_object($get_data);
            if (!empty($order)) {
                $user_id = $order->get_user_id();
                if ($user_id) {
                    $referral_id = get_user_meta($user_id, 'gens_referral_id', true);
                    if (!empty($referral_id)) {
                        return $this->parse_shortcode_output($referral_id, $attr);
                    }
                }
            }

            /** If user ID or email */
            $user_id = isset($get_data['user_id']) ? $get_data['user_id'] : '';
            $email   = isset($get_data['email']) ? $get_data['email'] : '';

            $contact = bwf_get_contact($user_id, $email);
            if (absint($contact->get_id()) > 0 && class_exists('BWFCRM_Contact')) {
                $contact_crm = new BWFCRM_Contact($contact);
                $user_id = $contact_crm->get_wpid();
                if ($user_id) {
                    $referral_id = get_user_meta($user_id, 'gens_referral_id', true);
                    if (!empty($referral_id)) {
                        return $this->parse_shortcode_output($referral_id, $attr);
                    }
                }
            }

            return $this->parse_shortcode_output('', $attr);
        }

        public function get_referral_id($cid) {
            $cid = absint($cid);
            if (!class_exists('BWFCRM_Contact') || 0 === $cid) {
                return '';
            }

            $contact = new BWFCRM_Contact($cid);

            if (!$contact->is_contact_exists()) {
                return '';
            }

            $user_id = $contact->get_wpid();
            return get_user_meta($user_id, 'gens_referral_id', true);
        }

        /**
         * Show dummy value of the current merge tag.
         *
         * @return string
         */
        public function get_dummy_preview() {
            return 'SAMPLE_REFERRAL_ID_123';
        }
    }

    /**
     * Register this merge tag to a group.
     */
    BWFAN_Merge_Tag_Loader::register('bwf_contact', 'BWFAN_Contact_Referral_ID', null, 'Contact');
}