from functools import lru_cache
from pydantic import BaseSettings, Field


class Settings(BaseSettings):
    app_name: str = Field("AIMNOTE RAG Gateway", env="RAG_GATEWAY_APP_NAME")
    api_prefix: str = "/rag"
    environment: str = Field("development", env="RAG_GATEWAY_ENV")
    lightrag_url: str = Field("http://127.0.0.1:7777", env="LIGHTRAG_URL")
    supabase_rest_url: str = Field("http://127.0.0.1:54321/rest/v1", env="SUPABASE_REST_URL")
    supabase_key: str = Field("", env="SUPABASE_SERVICE_ROLE_KEY")
    embedding_base_url: str = Field("http://127.0.0.1:11434/v1", env="EMBEDDING_BASE_URL")
    embedding_model: str = Field("qwen3-embedding:8b", env="EMBEDDING_MODEL")

    class Config:
        env_file = ".env"
        case_sensitive = False


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