import os
from dataclasses import dataclass


@dataclass(frozen=True)
class Config:
    api_url: str
    api_key: str
    task_name: str
    max_retries: int
    retry_base_delay: float

    @classmethod
    def from_env(cls) -> "Config":
        return cls(
            api_url=os.getenv("RAILWAY_API_URL", "https://hub.ag3nts.org/verify"),
            api_key=os.environ["RAILWAY_API_KEY"],
            task_name=os.getenv("RAILWAY_TASK_NAME", "railway"),
            max_retries=int(os.getenv("RAILWAY_MAX_RETRIES", "10")),
            retry_base_delay=float(os.getenv("RAILWAY_RETRY_BASE_DELAY", "2.0")),
        )