from __future__ import annotations

from dataclasses import dataclass
from typing import List
from .planner import Action


@dataclass
class SafetyContract:
    pre_conditions: List[str] = None
    post_conditions: List[str] = None

    def validate_plan(self, actions: List[Action]) -> bool:
        # Very small stub: ensure there is at least one action and no explicitly unsafe actions
        if not actions:
            return False
        # If any action name contains 'unsafe', reject the plan
        for a in actions:
            if "unsafe" in a.name.lower():
                return False
        return True