from pydantic_settings import BaseSettings, SettingsConfigDict
from typing import Optional

class Settings(BaseSettings):
    # 项目基础配置
    PROJECT_NAME: str = "海关数据项目 MVP"
    VERSION: str = "0.1.0"
    
    # 数据库配置 (PostgreSQL)
    DATABASE_URL: str = "postgresql+asyncpg://postgres:postgres@localhost:5434/customs_data"
    
    # ClickHouse 配置
    CLICKHOUSE_URL: str = "http://default:password@localhost:8123"
    
    # Elasticsearch 配置
    ELASTICSEARCH_URL: str = "http://localhost:9200"
    
    # Redis 配置
    REDIS_URL: str = "redis://localhost:6379/0"
    
    # 代理池配置
    PROXY_POOL_URL: Optional[str] = None
    
    # S3 / 对象存储配置 (用于原始文件留存)
    S3_ENDPOINT: Optional[str] = None
    S3_ACCESS_KEY: Optional[str] = None
    S3_SECRET_KEY: Optional[str] = None
    S3_BUCKET_NAME: str = "customs-raw-data"

    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")

settings = Settings()