"""Einstellungs-Dialog für whisper-local (Windows)."""

from __future__ import annotations

import ctypes
import threading
from typing import Callable

import sounddevice as sd

from whisper_local.config import Config, save_config


def pynput_to_evdev_key(key) -> str:
    """Konvertiert pynput-Key zu evdev-Key-Namen (z.B. Key.f12 → 'KEY_F12')."""
    from pynput.keyboard import Key, KeyCode

    if isinstance(key, Key):
        return f"KEY_{key.name.upper()}"
    if isinstance(key, KeyCode) and key.char:
        return f"KEY_{key.char.upper()}"
    return ""


def check_hotkey_conflict(evdev_name: str) -> bool:
    """Gibt True zurück wenn die Taste per Win32-RegisterHotKey belegt ist."""
    from whisper_local.hotkey._pynput import _evdev_to_pynput_key
    from pynput.keyboard import Key

    try:
        pynput_key = _evdev_to_pynput_key(evdev_name)
    except ValueError:
        return False

    if not isinstance(pynput_key, Key):
        return False

    vk = getattr(pynput_key.value, "vk", None)
    if vk is None:
        return False

    HOTKEY_ID = 0x7FFF
    user32 = ctypes.windll.user32
    if user32.RegisterHotKey(None, HOTKEY_ID, 0, vk):
        user32.UnregisterHotKey(None, HOTKEY_ID)
        return False
    return True


def list_microphones() -> list[tuple[str, int]]:
    """Gibt Liste aller Eingabegeräte als (name, index) zurück."""
    devices = sd.query_devices()
    return [
        (dev["name"], idx)
        for idx, dev in enumerate(devices)
        if dev["max_input_channels"] > 0
    ]