import os
import subprocess
import tempfile
import logging
from config import ELEVENLABS_API_KEY

logger = logging.getLogger(__name__)

async def text_to_speech(text: str) -> bytes | None:
    if not ELEVENLABS_API_KEY:
        logger.debug("ElevenLabs API key не установлен, TTS пропущен")
        return None

    logger.info(f"Генерация TTS: {text[:50]}...")

    try:
        import aiohttp
        headers = {
            "xi-api-key": ELEVENLABS_API_KEY,
            "Content-Type": "application/json",
        }
        payload = {
            "text": text,
            "model_id": "eleven_monolingual_v1",
            "voice_settings": {
                "stability": 0.5,
                "similarity_boost": 0.75,
            }
        }

        async with aiohttp.ClientSession() as session:
            async with session.post(
                "https://api.elevenlabs.io/v1/text-to-speech/21m00Tcm4TlvDq8ikWAM/stream",
                json=payload,
                headers=headers,
            ) as resp:
                if resp.status != 200:
                    logger.error(f"ElevenLabs error: {resp.status}")
                    return None
                mp3_data = await resp.read()

        mp3_path = None
        ogg_path = None
        try:
            with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as mp3_tmp:
                mp3_tmp.write(mp3_data)
                mp3_path = mp3_tmp.name

            ogg_fd, ogg_path = tempfile.mkstemp(suffix=".ogg")
            os.close(ogg_fd)

            ffmpeg_cmd = [
                "ffmpeg", "-y",
                "-i", mp3_path,
                "-acodec", "libopus",
                "-b:a", "48k",
                "-vbr", "on",
                ogg_path,
            ]
            subprocess.run(ffmpeg_cmd, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

            with open(ogg_path, "rb") as f:
                ogg_data = f.read()

            return ogg_data

        except Exception as e:
            logger.error(f"Ошибка при конвертации TTS: {e}")
            return None
        finally:
            for path in [mp3_path, ogg_path]:
                if path and os.path.exists(path):
                    os.remove(path)

    except ImportError:
        logger.warning("aiohttp не установлен, TTS недоступен")
        return None
    except Exception as e:
        logger.error(f"Ошибка TTS: {e}")
        return None