"""Update checker — checks for available router updates.

Compares the current router version against available updates
and determines if an update is needed.

Ported from net.i2p.update.UpdateHandler / UpdateManager.
"""

from __future__ import annotations

from dataclasses import dataclass

from i2p_apps.updater.version import compare_versions


@dataclass
class UpdateInfo:
    """Information about an available update."""
    version: str
    url: str
    sig_url: str = ""
    min_version: str = ""


class UpdateChecker:
    """Checks whether the router needs updating."""

    def __init__(self, current_version: str) -> None:
        self.current_version = current_version

    def needs_update(self, info: UpdateInfo) -> bool:
        """Check if an update is needed based on version comparison."""
        return compare_versions(info.version, self.current_version) > 0