import rtmidi

def get_available_input_ports():
    """Returns list of (display_name, original_index, available) for all ports."""
    try:
        all_ports = rtmidi.MidiIn().get_ports()
    except:
        return []

    result = []

    for i, name in enumerate(all_ports):
        try:
            test = rtmidi.MidiIn()
            test.open_port(i)
            test.close_port()
            del test
            result.append((name, i, True))
        except:
            print(f"Port in use, skipping: {name}")
            result.append((f"{name}  [in use by another program]", i, False))

    return result

def open_midi_input_port(original_index, callback):
    midi_in = rtmidi.MidiIn()
    midi_in.open_port(original_index)
    midi_in.set_callback(callback)
    return midi_in

def close_midi_input_port(midi_in):
    if midi_in and midi_in.is_port_open():
        midi_in.close_port()