# whisper_local/microphone/__init__.py
"""Mikrofon-Geräteüberwachung — plattformspezifische Backends."""
import sys
from collections.abc import Awaitable, Callable
from typing import Protocol


class MicrophoneMonitor(Protocol):
    on_device_added: Callable[[str], Awaitable[None]] | None
    on_device_removed: Callable[[str], Awaitable[None]] | None
    on_configured_missing: Callable[[], Awaitable[None]] | None

    async def start(self) -> None: ...
    def stop(self) -> None: ...


def create_monitor(configured_device: str | None) -> MicrophoneMonitor:
    """Erstellt den plattformspezifischen Mikrofon-Monitor."""
    if sys.platform == "win32":
        from whisper_local.microphone._win32 import Win32Monitor
        return Win32Monitor(configured_device)
    from whisper_local.microphone._poll import PollMonitor
    return PollMonitor(configured_device)