WooCoommerce Delete Expired Coupons Automatically

functions.php

/** WooCommerce automatically delete expired coupons */

// WP Crone adding new interval schedule
add_filter( 'cron_schedules', 'cron_add_custom_interval' );
function cron_add_custom_interval( $schedules ) {
    // Adds custom time interval to the existing schedules
 	$schedules['custominterval'] = array(
 		'interval' => 86400, // in seconds
 		'display' => __( 'Custom interval' )
 	);
 	return $schedules;
 }

// Schedule coupons delete event
function wp_schedule_delete_expired_coupons() {
	if ( ! wp_next_scheduled( 'delete_expired_coupons' ) ) {
		wp_schedule_event( time(), 'custominterval', 'delete_expired_coupons' );
    // instead of 'custominterval', you can use default values: hourly, twicedaily, daily, weekly
	}
}
add_action( 'init', 'wp_schedule_delete_expired_coupons' );

// Find and trash/delete expired coupons
function wp_delete_expired_coupons() {
	$args = array(
		'posts_per_page' => -1, // -1 is for all coupons, you can enter any other number to limit the number of coupons that will be trashed/deleted per execution 
		'post_type'      => 'shop_coupon',
		'post_status'    => 'publish',
		'meta_query'     => array(
			'relation'   => 'AND',
			array(
				'key'     => 'date_expires',
				'value'   => time(),
				'compare' => '<='
			),
			array(
				'key'     => 'date_expires',
				'value'   => '',
				'compare' => '!='
			)
		)
	);

	$coupons = get_posts( $args );

	if ( ! empty( $coupons ) ) {

		foreach ( $coupons as $coupon ) {
			wp_trash_post( $coupon->ID ); // Trash coupons
            // wp_delete_post( $coupon->ID, true ); // Delete coupons
		}
	
    }
}
add_action( 'delete_expired_coupons', 'wp_delete_expired_coupons' );