// Activation hook
register_activation_hook(__FILE__, function() {
    try {
        // Check if WooCommerce is active
        if (!class_exists('WooCommerce')) {
            throw new Exception('WooCommerce must be installed and activated before activating this plugin.');
        }
        
        // Create default settings if they don't exist
        if (!get_option('wc_payment_discount_settings')) {
            add_option('wc_payment_discount_settings', array());
        }
        
        // Set plugin version
        update_option('wc_payment_discount_version', '1.0.0');
        
    } catch (Exception $e) {
        // Deactivate plugin if requirements not met
        deactivate_plugins(plugin_basename(__?>