add_action( 'pronobat_appointment_created', function( int $id, array $appointment ) {
    error_log( "نوبت جدید: #{$id}" );
}, 10, 2 );

add_action( 'pronobat_appointment_status_changed', function(
    int $id, string $old_status, string $new_status
) {
    // ...
}, 10, 3 );

add_action( 'pronobat_appointment_confirmed', function( int $id ) {
    // ارسال اعلان سفارشی هنگام تأیید نوبت
}, 10, 1 );

add_action( 'pronobat_appointment_cancelled', function( int $id, array $appointment, bool $refund ) {
    // ...
}, 10, 3 );

add_action( 'pronobat_appointment_rescheduled', function( int $id, array $appointment ) {
    // ...
}, 10, 2 );

add_action( 'pronobat_payment_received', function(
    int $payment_id, int $appointment_id, int $amount_toman, string $gateway
) {
    // ...
}, 10, 4 );

add_action( 'pronobat_payment_refunded', function(
    int $payment_id, int $amount_toman, array $raw
) {
    // ...
}, 10, 3 );

add_action( 'pronobat_settings_updated', function(
    string $section, array $old_settings, array $new_settings
) {
    if ( $section === 'payments' ) { /* ... */ }
}, 10, 3 );

add_action( 'pronobat_customer_anonymized', function( int $customer_id ) {
    // ...
}, 10, 1 );

add_action( 'pronobat_broadcast_notification', function(
    string $channel, string $message, int $service_id, int $staff_id
) {
    // ...
}, 10, 4 );

add_action( 'pronobat_sms_before_send_action', function(
    string $phone, string $message, string $event
) {
    // ...
}, 10, 3 );

add_filter( 'pronobat_available_slots', function(
    array $slots, int $staff_id, string $date, int $service_id
) {
    // حذف بازه‌ی ۱۲:۰۰
    return array_values( array_filter( $slots, fn( $s ) => $s['start'] !== '12:00' ) );
}, 10, 4 );

add_filter( 'pronobat_payment_gateways', function( array $gateways ) {
    $gateways['my_gateway'] = new MyCustomGateway();
    return $gateways;
} );

add_filter( 'pronobat_appointment_price', function( int $amount_toman, int $appointment_id ) {
    return (int) round( $amount_toman * 0.8 ); // ۲۰٪ تخفیف
}, 10, 2 );

add_filter( 'pronobat_sms_message', function( string $message, string $event, int $appointment_id ) {
    return $message . "\n\nبا تشکر از اعتماد شما";
}, 10, 3 );

add_filter( 'pronobat_sms_before_send', function(
    bool $should_send, string $phone, string $message, string $event
) {
    $hour = (int) current_time( 'H' );
    if ( $hour >= 23 || $hour < 7 ) return false; // بدون ارسال شبانه
    return $should_send;
}, 10, 4 );