from functools import lru_cache
from pathlib import Path

from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    llm_base_url: str = "https://openrouter.ai/api/v1"
    llm_api_key: str = ""
    llm_model_name: str = "qwen/qwen3.5-35b-a3b"
    embedding_model: str = "qwen/qwen3-embedding-4b"
    embedding_base_url: str = "https://openrouter.ai/api/v1"
    chroma_db_path: str = "./chroma_db"

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}


@lru_cache
def get_settings() -> Settings:
    return Settings()