"""
GUI匹配编辑器模块

提供编辑文件匹配关系的图形界面。
"""

import os
import tkinter as tk
from tkinter import ttk, messagebox


def show_matching_editor(matched_pairs, images_root):
    """显示匹配编辑窗口，允许手动调整匹配关系"""
    # 创建匹配编辑窗口
    editor_window = tk.Toplevel()
    editor_window.title('文件匹配编辑')
    editor_window.geometry('900x600')
    editor_window.transient()
    editor_window.grab_set()
    
    # 获取所有图片文件夹
    all_image_folders = []
    if os.path.isdir(images_root):
        for root, dirs, _ in os.walk(images_root):
            for dir_name in dirs:
                folder_path = os.path.join(root, dir_name)
                rel_path = os.path.relpath(folder_path, images_root)
                all_image_folders.append((folder_path, rel_path))
    
    # 标题
    title_frame = ttk.Frame(editor_window)
    title_frame.pack(fill='x', padx=10, pady=10)
    ttk.Label(title_frame, text='文件匹配编辑', font=('', 14, 'bold')).pack()
    ttk.Label(title_frame, text='选择要修改的项目，然后从右侧选择图片文件夹').pack()
    
    # 主体区域（使用PanedWindow分割）
    paned = ttk.PanedWindow(editor_window, orient='horizontal')
    paned.pack(fill='both', expand=True, padx=10, pady=10)
    
    # 左侧表格区域
    left_frame = ttk.Frame(paned)
    paned.add(left_frame, weight=2)
    
    # 表格标题
    ttk.Label(left_frame, text='TXT文件匹配列表:', font=('', 10, 'bold')).pack(anchor='w', pady=(0, 5))
    
    # 表格区域
    table_frame = ttk.Frame(left_frame)
    table_frame.pack(fill='both', expand=True)
    
    # 创建Treeview表格
    columns = ('index', 'txt_name', 'image_folder')
    tree = ttk.Treeview(table_frame, columns=columns, show='headings', height=15)
    tree.heading('index', text='序号')
    tree.heading('txt_name', text='TXT文件名')
    tree.heading('image_folder', text='匹配的图片文件夹')
    tree.column('index', width=60)
    tree.column('txt_name', width=200)
    tree.column('image_folder', width=250)
    
    # 表格滚动条
    table_scrollbar = ttk.Scrollbar(table_frame, orient='vertical', command=tree.yview)
    tree.configure(yscrollcommand=table_scrollbar.set)
    tree.pack(side='left', fill='both', expand=True)
    table_scrollbar.pack(side='right', fill='y')
    
    # 右侧文件夹列表区域
    right_frame = ttk.Frame(paned)
    paned.add(right_frame, weight=1)
    
    # 文件夹列表标题
    ttk.Label(right_frame, text='可用的图片文件夹:', font=('', 10, 'bold')).pack(anchor='w', pady=(0, 5))
    
    # 文件夹列表区域
    folders_frame = ttk.Frame(right_frame)
    folders_frame.pack(fill='both', expand=True)
    
    # 创建文件夹列表
    folders_listbox = tk.Listbox(folders_frame, selectmode='single')
    for folder_path, rel_path in all_image_folders:
        folders_listbox.insert('end', rel_path)
    
    # 文件夹列表滚动条
    folders_scrollbar = ttk.Scrollbar(folders_frame, orient='vertical', command=folders_listbox.yview)
    folders_listbox.configure(yscrollcommand=folders_scrollbar.set)
    folders_listbox.pack(side='left', fill='both', expand=True)
    folders_scrollbar.pack(side='right', fill='y')
    
    # 操作按钮区域
    button_frame = ttk.Frame(editor_window)
    button_frame.pack(fill='x', padx=10, pady=10)
    
    # 提供通过闭包访问变量的方式
    selected_item_id = [None]  # type: ignore
    
    def on_tree_select(event):
        """TreeView选中事件"""
        selection = tree.selection()
        if selection:
            selected_item_id[0] = selection[0]  # type: ignore
    
    tree.bind('<<TreeviewSelect>>', on_tree_select)
    
    def set_matching():
        """设置选中项的匹配"""
        if not selected_item_id[0]:
            messagebox.showwarning('警告', '请先选择一个TXT文件')
            return
        
        folder_selection = folders_listbox.curselection()
        if not folder_selection:
            messagebox.showwarning('警告', '请先选择一个图片文件夹')
            return
        
        # 获取选中的索引
        item_values = tree.item(selected_item_id[0], 'values')
        row_index = int(item_values[0])
        
        # 获取选中的文件夹
        folder_index = folder_selection[0]
        folder_path, folder_rel = all_image_folders[folder_index]
        
        # 更新匹配关系
        matched_pairs[row_index]['image_folder'] = {
            "path": folder_path,
            "name": os.path.basename(folder_path),
            "relative_path": folder_rel
        }
        
        # 更新表格显示
        tree.item(selected_item_id[0], values=(row_index, item_values[1], folder_rel))
        
        messagebox.showinfo('成功', f'已将 "{item_values[1]}" 匹配到 "{folder_rel}"')
    
    def clear_matching():
        """清除选中项的匹配"""
        if not selected_item_id[0]:
            messagebox.showwarning('警告', '请先选择一个TXT文件')
            return
        
        # 获取选中的索引
        item_values = tree.item(selected_item_id[0], 'values')
        row_index = int(item_values[0])
        
        # 清除匹配关系
        matched_pairs[row_index]['image_folder'] = None
        
        # 更新表格显示
        tree.item(selected_item_id[0], values=(row_index, item_values[1], '无匹配'))
        
        messagebox.showinfo('成功', f'已清除 "{item_values[1]}" 的匹配关系')
    
    def apply_all():
        """应用所有修改"""
        editor_window.destroy()
    
    # 按钮
    ttk.Button(button_frame, text='设置选中项', command=set_matching).pack(side='left', padx=5)
    ttk.Button(button_frame, text='清除选中项', command=clear_matching).pack(side='left', padx=5)
    ttk.Button(button_frame, text='应用所有', command=apply_all).pack(side='right', padx=5)
    
    # 填充表格数据
    for i, pair in enumerate(matched_pairs):
        txt_name = pair['txt']['name']
        img_folder = pair['image_folder']['relative_path'] if pair['image_folder'] else '无匹配'
        tree.insert('', 'end', values=(i, txt_name, img_folder))
    
    # 等待窗口关闭
    editor_window.wait_window()
    
    return matched_pairs