from pydantic_settings import BaseSettings, SettingsConfigDict
from pydantic import Field


class Settings(BaseSettings):
    """
    应用配置类。Pydantic Settings 会自动从环境变量和 .env 文件中加载这些值。
    """
    model_config = SettingsConfigDict(
        env_file='.env',
        env_file_encoding='utf-8',
        extra='ignore'  # 忽略环境变量中多余的键
    )
    # --- google api 配置信息 ---
    GOOGLE_GENAI_USE_VERTEXAI: str = Field(default="", description="")
    GOOGLE_API_KEY: str = Field(default="", description="")

    # ---  mongodb配置信息 ---
    MONGODB_USERNAME: str = Field(default="", description="")
    MONGODB_PASSWORD: str = Field(default="", description="")
    MONGODB_HOST: str = Field(default="localhost", description="")
    MONGODB_PORT: int = Field(default=27017, description="")


settings = Settings()
MONGO_URI = f"mongodb://{settings.MONGODB_USERNAME}:{settings.MONGODB_PASSWORD}@{settings.MONGODB_HOST}:{settings.MONGODB_PORT}"