使用WooCommerce防止重复购买产品变体

function prevent_duplicate_purchase( $passed, $product_id, $quantity ) {
    $current_user = wp_get_current_user();
    $order_count = wc_get_customer_order_count( $current_user->ID );

    // 检查用户是否已经购买过该产品变体
    $orders = wc_get_orders( array(
        'customer_id' => $current_user->ID,
        'product_ids' => $product_id,
        'status' => wc_get_is_paid_statuses(),
    ) );

    if ( count( $orders ) > 0 ) {
        wc_add_notice( '您已经购买过此产品变体，无法再次购买。', 'error' );
        $passed = false;
    }

    return $passed;
}

add_filter( 'woocommerce_add_to_cart_validation', 'prevent_duplicate_purchase', 10, 3 );