"""显式注册动作处理器"""

from typing import Any

from app.actions.base import BaseActionHandler
from app.actions.move import MoveHandler
from app.actions.resize import ResizeHandler
from app.actions.update import UpdateHandler
from app.schemas.actions import Action
from app.schemas.screen import Screen

# 新增操作时在此注册，未实现的操作明确报错
ACTION_HANDLERS: dict[str, BaseActionHandler[Any]] = {
    "move": MoveHandler(),
    "resize": ResizeHandler(),
    "update": UpdateHandler(),
}


def apply_action(screen: Screen, action: Action) -> Screen:
    """接收已通过 Schema 校验的动作，返回执行后的副本"""
    handler = ACTION_HANDLERS.get(action.type)
    if handler is None:
        raise ValueError(f"尚未实现动作处理器: {action.type}")
    return handler.apply(screen, action)