from dataclasses import dataclass

@dataclass
class Settings:
    dialect: str = "postgresql"
    driver: str = "psycopg2"
    user: str = "user"
    password: str = "password"
    db_name: str = "db"
    host: str = "postgres"
    port: int = 5432

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