from pathlib import Path
from typing import Any

from app.config import get_settings
from app.core.logging import logger

settings = get_settings()


async def download_model(model_id: str, use_modelscope: bool = False) -> dict[str, Any]:
    """从 HF 或 ModelScope 下载模型到本地缓存。"""
    logger.info(f"Downloading model {model_id} (modelscope={use_modelscope})")
    return {"model_id": model_id, "status": "downloading"}


def list_cached_models() -> list[dict[str, Any]]:
    """列出本地已缓存的模型。"""
    models_dir = settings.models_dir
    if not models_dir.exists():
        return []
    return [{"id": d.name, "path": str(d)} for d in models_dir.iterdir() if d.is_dir()]


def get_model_info(model_id: str) -> dict[str, Any] | None:
    """获取已缓存模型的元数据。"""
    return None