class-wpgens-raf-reminder-email.php

<?php

/**
 * Hook into checkout
 *
 * @since 2.0.0
 */

if (!defined('ABSPATH')) {
    exit;
}

class WPGens_RAF_Reminder_Email
{

    /**
     * Constructor.
     *
     */
    public function __construct()
    {
		add_action('woocommerce_order_status_' . apply_filters('wpgens_raf_order_status', 'completed'), array($this, 'schedule_order_completed_email'), 10, 1 );
    }


    public function schedule_order_completed_email($order_id) {
        $gens_raf_send_reminder_email  = get_option('gens_raf_send_reminder_email');
        $gens_raf_reminder_email_delay  = get_option('gens_raf_reminder_email_delay', '5');

        if($gens_raf_send_reminder_email) {
            wp_schedule_single_event(time() + (int)$gens_raf_reminder_email_delay * MINUTE_IN_SECONDS, 'send_referral_notification_email_event', array($order_id));
        }
    }

    public function send_referral_notification_email($order_id)
    {
        if (!$order_id) {
            return;
        }

        $order = wc_get_order( $order_id );
    
        if (!$order) {
            return false;
        }

        $user_id = $order->get_user_id();
    
        if ($user_id) {
            if(get_user_meta($user_id, 'gens_referral_notification_sent', true)) {
                return false;
            }
            add_user_meta($user_id, 'gens_referral_notification_sent', 1);
            // Get the gens_referral_id user meta for registered users
            $referral = new WPGens_RAF_User($user_id);
            $referral_id = $referral->get_referral_id();
        } else {
            if(!get_option( "gens_raf_allow_guests")) {
                return false;                
            }
            // Get the referral id for guests
            $email = $order->get_billing_email();

            // For guests, we will check if user has only one order, as notification is sent only once.
            $customer_orders = wc_get_orders(array(
                'numberposts' => 2,
                'billing_email' => $email,
                'status' => array('wc-processing', 'wc-completed'),
            ));
            if (count($customer_orders) != 1) {
                return false;
            }
            $referral_id = $email;
        }
    
        // Get the gens_referral_id user meta
        $email = new WPGens_RAF_Email($order->get_billing_email(), $referral_id, $order_id, "reminder");
        $email->send_email();

    }

}

$wpgens_raf_reminder_email = new WPGens_RAF_Reminder_Email();

add_action('send_referral_notification_email_event', array($wpgens_raf_reminder_email, 'send_referral_notification_email'), 10, 1);