<?php
/**
 * Plugin Name: Admin Email for PMPro Membership Expiry
 * Description: Sends an email to the WordPress admin when a Paid Memberships Pro membership expires.
 * Version: 1.0.0
 * Author: Craze Collective
 * Author URI: https://crazeco.com.au
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: admin-email-for-pmpro-membership-expiry
 */

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

/**
 * Notify admin when a membership expires
 */
add_action( 'pmpro_membership_post_membership_expiry', 'amd_pmpro_notify_admin_on_expiry', 10, 2 );
function amd_pmpro_notify_admin_on_expiry( $user_id, $membership_id ) {

    if ( empty( $user_id ) || empty( $membership_id ) ) {
        return;
    }

    if ( ! function_exists( 'pmpro_getLevel' ) ) {
        return;
    }

    $user  = get_userdata( $user_id );
    $level = pmpro_getLevel( $membership_id );

    if ( ! $user ) {
        return;
    }

    $admin_email = get_option( 'admin_email' );

    $subject = sprintf(
        'Membership Expired: %s',
        $user->display_name
    );

    $message = sprintf(
"⏰ Admin Email for PMPro Membership Expiry automatically notifies the site administrator\n\n".
"🔒 The plugin uses official PMPro hooks and does not modify any core or add-on files, making it fully update-safe\n\n".
"📬 Instant notification to admin on membership expiry\n".
"✅ Works with all PMPro membership levels\n".
"🔄 Fully update-safe; no core edits required\n".
"🪝 Uses WordPress core APIs and PMPro hooks only\n".
"✉️ Plain-text email notifications by default\n".
"🛠️ Optional customization via filters if needed\n"
    );

    wp_mail( $admin_email, $subject, $message );
}