# -*- coding: utf-8 -*-
"""
================================================================================
客户端右键拦截系统（ClientFeatureDispatcher）
================================================================================
【作用】
  在客户端提前拦截"手持物品右键功能方块"的默认行为(吃/放置前摇),
  消除服务端取消带来的"闪一下"视觉问题。与服务端 FeatureDispatcher 配合:
  客户端先 cancel/ret, 再由服务端精确处理转换。

【监听事件】(全模组客户端唯一拦截点)
  1. ClientItemUseOnEvent  手持白名单物品右键方块表面 -> ret=True
  2. ClientItemTryUseEvent 手持直接吃物品(饭团/水煮蛋/豆腐) -> cancel=True
  【注意】不拦 ClientBlockUseEvent(右键功能方块本体): 那会误拦"对炉灶放置
  蒸笼/对空锅放置盘子"等合理放置。右键方块本体的转换由服务端 OnBlockUse
  精确路由处理, 不在客户端提前 cancel。

【白名单来源】
  共享数据 InterceptData.py (客户端/服务端同一份, 见其注释)
================================================================================
"""
import mod.client.extraClientApi as clientApi

ClientSystem = clientApi.GetClientSystemCls()
clientComp = clientApi.GetEngineCompFactory()

from ...BlueFoxTools.SpecialFunciton.BlueFoxSystem import BlueFoxClientSystem
from .InterceptData import (ITEM_USE_ON_CANCEL, ITEM_USE_ON_CANCEL_BY_ITEM,
                            SUSHI_BLOCKS, COATING_ITEMS)


class ClientFeatureDispatcher(BlueFoxClientSystem):
    """客户端右键拦截: 白名单提前 cancel/ret, 消除闪烁"""

    def __init__(self, namespace, systemName):
        BlueFoxClientSystem.__init__(self, namespace, systemName)
        print "===== ClientFeatureDispatcher init ====="
        self.ListenForEvent(clientApi.GetEngineNamespace(),
                            clientApi.GetEngineSystemName(),
                            "ClientItemUseOnEvent", self, self.OnItemUseOn)
        self.ListenForEvent(clientApi.GetEngineNamespace(),
                            clientApi.GetEngineSystemName(),
                            "ClientItemTryUseEvent", self, self.OnItemTryUse)

    def Destroy(self):
        print "===== ClientFeatureDispatcher Destroy ====="
        self.UnListenForEvent(clientApi.GetEngineNamespace(),
                              clientApi.GetEngineSystemName(),
                              "ClientItemUseOnEvent", self, self.OnItemUseOn)
        self.UnListenForEvent(clientApi.GetEngineNamespace(),
                              clientApi.GetEngineSystemName(),
                              "ClientItemTryUseEvent", self, self.OnItemTryUse)

    # ============================================================================
    # 入口1: 手持物品右键方块表面 -> 白名单组合才 ret (取消默认放置/吃)
    # ============================================================================
    def OnItemUseOn(self, args):
        blockName = args.get("blockName")
        try:
            itemDict = args.get("itemDict") or {}
            itemName = itemDict.get("newItemName") or itemDict.get("itemName")
        except Exception:
            itemName = None
        if not itemName:
            return

        # 纯手持物品取消 (相邻放置/手持吃物品右键表面): 只看 item
        if itemName in ITEM_USE_ON_CANCEL_BY_ITEM:
            args["ret"] = True
            return

        if not blockName:
            return

        # 精确组合 (手持item, 被点block)
        pair = (itemName, blockName)
        if pair in ITEM_USE_ON_CANCEL:
            args["ret"] = True
            return

        # 寿司: 手持寿司方块物品 右键 自家寿司方块 -> 取消默认放置
        if itemName in SUSHI_BLOCKS and blockName in SUSHI_BLOCKS:
            args["ret"] = True
            return

        # 裹粉: 手持生食材 右键 面粉块 -> 取消默认放置
        if itemName in COATING_ITEMS and blockName == "rtdd:farineblock_3":
            args["ret"] = True

    # ============================================================================
    # 入口3: 手持直接吃物品(长按/空中使用) -> cancel 默认吃
    # ============================================================================
    def OnItemTryUse(self, args):
        try:
            itemDict = args.get("itemDict") or {}
            itemName = itemDict.get("newItemName") or itemDict.get("itemName")
        except Exception:
            itemName = None
        # 饭团/水煮蛋/豆腐 在 ITEM_USE_ON_CANCEL_BY_ITEM 里(EAT_ITEMS)
        if itemName in ITEM_USE_ON_CANCEL_BY_ITEM:
            args["cancel"] = True


# 注: 客户端系统需在客户端进程被实例化。modMain 只能在服务端 import 服务端
# 系统; 客户端系统由 BlueFox 框架自动注册其子类。为确保本类被加载, 需在
# modMain 客户端分支(IsInServer()==False)里 import 本模块。