#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Geometry UI Module for Plugin
几何模型UI模块 - 负责显示几何模型编辑界面和基础操作
基本功能:
- 模型拾取以及加载
- LOD模型分级过滤
- LOD模型创建
- 自动加载模型
- 标准化命名
- 自动分组
- 生成面部配件（睫毛，舌头，泪腺 等）
- 修复接缝（修复法线）
- 修复点序
"""

#===================================== IMPORT MODULES =====================================
from Qt import QtWidgets, QtCore, QtGui
from Qt.QtCompat import wrapInstance
from maya import OpenMayaUI as omui
import sys
import os

#===================================== IMPORT FUNCTIONS ===================================
from scripts.utils import utils_geometry as utils_geometry
from scripts.ui import ui_utils

#========================================== WIDGETS ==========================================
# 全局变量存储UI控件
model_tree = None
lod_combo = None
model_buttons = {}
model_info_panel = None

def widgets():
    """
    创建几何模型UI控件
    """
    global model_tree, lod_combo, model_buttons, model_info_panel
    
    # LOD选择下拉菜单
    lod_combo = QtWidgets.QComboBox()
    lod_combo.addItems(["LOD0", "LOD1", "LOD2", "LOD3", "LOD4"])
    lod_combo.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Fixed)
    lod_combo.setMinimumWidth(100)
    
    # 模型树形视图
    model_tree = QtWidgets.QTreeWidget()
    model_tree.setHeaderLabels(["模型名称", "顶点数", "面数"])
    model_tree.setMinimumHeight(250)
    model_tree.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
    model_tree.header().setSectionResizeMode(QtWidgets.QHeaderView.Stretch)  # 列自动拉伸
    
    # 模型信息面板
    model_info_panel = QtWidgets.QTextEdit()
    model_info_panel.setReadOnly(True)
    model_info_panel.setMinimumHeight(100)
    model_info_panel.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
    
    # 功能按钮 - 设置统一的大小策略
    for button_name in ["load_model", "create_lod", "auto_load", "standardize_name", 
                        "auto_group", "generate_accessories", "fix_seams", "fix_vertex_order"]:
        model_buttons[button_name] = QtWidgets.QPushButton({
            "load_model": "加载模型",
            "create_lod": "创建LOD",
            "auto_load": "自动加载",
            "standardize_name": "标准化命名",
            "auto_group": "自动分组",
            "generate_accessories": "生成面部配件",
            "fix_seams": "修复接缝",
            "fix_vertex_order": "修复点序"
        }[button_name])
        model_buttons[button_name].setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Fixed)
        model_buttons[button_name].setMinimumWidth(120)

#========================================== LAYOUTS ==========================================
def layouts(parent_tab=None):
    """
    创建几何模型UI布局
    
    Args:
        parent_tab: 父容器控件，由Main.py传入
    """
    # 获取父容器（在Main.py中创建的geometry_tab）
    if not parent_tab:
        parent_tab = ui_utils.get_parent_widget("geometry_tab")
        if not parent_tab:
            print("无法获取父容器，布局创建失败")
            return
    
    # 创建主布局
    main_layout = parent_tab.layout()
    if not main_layout:
        main_layout = QtWidgets.QVBoxLayout(parent_tab)
        main_layout.setContentsMargins(4, 4, 4, 4)
        main_layout.setSpacing(4)
        main_layout.setSizeConstraint(QtWidgets.QLayout.SetDefaultConstraint)  # 设置布局约束为默认，允许自适应
    
    # 创建分割控件
    splitter = QtWidgets.QSplitter(QtCore.Qt.Vertical)
    
    # 上部区域 - LOD选择和模型树
    top_widget = QtWidgets.QWidget()
    top_layout = QtWidgets.QVBoxLayout(top_widget)
    top_layout.setContentsMargins(0, 0, 0, 0)
    
    # LOD选择区域
    lod_layout = QtWidgets.QHBoxLayout()
    lod_layout.addWidget(QtWidgets.QLabel("LOD级别:"))
    lod_layout.addWidget(lod_combo)
    lod_layout.addStretch()
    top_layout.addLayout(lod_layout)
    
    # 模型树区域
    model_group = QtWidgets.QGroupBox("模型列表")
    model_layout = QtWidgets.QVBoxLayout(model_group)
    model_layout.addWidget(model_tree)
    top_layout.addWidget(model_group)
    
    # 下部区域 - 模型信息
    model_info_group = QtWidgets.QGroupBox("模型信息")
    model_info_layout = QtWidgets.QVBoxLayout(model_info_group)
    model_info_layout.addWidget(model_info_panel)
    
    # 添加到分割控件
    splitter.addWidget(top_widget)
    splitter.addWidget(model_info_group)
    
    # 按钮区域
    button_layout = QtWidgets.QGridLayout()
    button_layout.addWidget(model_buttons["load_model"], 0, 0)
    button_layout.addWidget(model_buttons["create_lod"], 0, 1)
    button_layout.addWidget(model_buttons["auto_load"], 1, 0)
    button_layout.addWidget(model_buttons["standardize_name"], 1, 1)
    button_layout.addWidget(model_buttons["auto_group"], 2, 0)
    button_layout.addWidget(model_buttons["generate_accessories"], 2, 1)
    button_layout.addWidget(model_buttons["fix_seams"], 3, 0)
    button_layout.addWidget(model_buttons["fix_vertex_order"], 3, 1)
    
    # 添加到主布局
    main_layout.addWidget(splitter)
    main_layout.addLayout(button_layout)

#========================================== CONNECTIONS ==========================================
def connections():
    """
    连接几何模型UI信号和槽
    """
    # 连接按钮点击事件到占位函数
    model_buttons["load_model"].clicked.connect(lambda: print("加载模型功能待实现"))
    model_buttons["create_lod"].clicked.connect(lambda: print("创建LOD功能待实现"))
    model_buttons["auto_load"].clicked.connect(lambda: print("自动加载功能待实现"))
    model_buttons["standardize_name"].clicked.connect(lambda: print("标准化命名功能待实现"))
    model_buttons["auto_group"].clicked.connect(lambda: print("自动分组功能待实现"))
    model_buttons["generate_accessories"].clicked.connect(lambda: print("生成面部配件功能待实现"))
    model_buttons["fix_seams"].clicked.connect(lambda: print("修复接缝功能待实现"))
    model_buttons["fix_vertex_order"].clicked.connect(lambda: print("修复点序功能待实现"))
    
    # 连接LOD选择事件
    lod_combo.currentIndexChanged.connect(lambda index: print(f"选择的LOD级别: {lod_combo.currentText()}"))
    
    # 连接模型树选择事件
    model_tree.itemSelectionChanged.connect(lambda: print("模型选择已更改"))

#===================================== PLACEHOLDER FUNCTION ===================================
def geometry_temp_function():
    return utils_geometry.geometry_temp_utils_function()