from dataclasses import dataclass
import os

@dataclass
class Settings:
    dialect: str = os.getenv('DIALECT', "postgresql")
    driver: str = os.getenv('DRIVER', "psycopg2")
    user: str = os.getenv('USER', "user")
    password: str = os.getenv('PASSWORD', "password")
    db_name: str = os.getenv('DB_NAME', "db")
    host: str = os.getenv('HOST', "postgres")
    port: int = os.getenv('PORT', 5432)

    @property
    def uri(self) -> str:
        return f"{self.dialect}+{self.driver}://{self.user}:{self.password}@{self.host}:{self.port}/{self.db_name}"