from enum import Enum
from dataclasses import dataclass
from typing import Optional

class UpdateLevel(Enum):
    MAJOR = "major"
    MINOR = "minor"
    PATCH = "patch"

@dataclass
class UpdateInfo:
    version: str
    level: UpdateLevel
    release_date: str
    release_note: str
    is_mandatory: bool = False
    download_url: Optional[str] = None