"""
GUI结果显示模块

提供处理结果显示的图形界面。
"""

import os
import sys
import tkinter as tk
from tkinter import ttk, messagebox, scrolledtext
import subprocess
import platform


def show_results_window(results):
    """显示批量处理结果窗口"""
    # 准备结果消息
    if results['failed'] == 0:
        title = '处理完成'
        message = f"全部成功！\n共处理 {results['total']} 个文件，全部转换成功。"
        if results['main_output_folder']:
            message += f"\n主要输出文件夹: {results['main_output_folder']}"
        _show_simple_result(title, message, results['main_output_folder'])
    else:
        title = '处理完成'
        failed_text = "\n".join([f"- {item['name']}: {item['error']}" for item in results['failed_items']])
        message = (f"处理完成！\n共处理 {results['total']} 个文件，"
                   f"{results['success']} 个成功，{results['failed']} 个失败。\n\n"
                   f"失败项:\n{failed_text}")
        if results['main_output_folder']:
            message += f"\n主要输出文件夹: {results['main_output_folder']}"
        _show_detailed_result(title, message, results['main_output_folder'])


def _show_simple_result(title, message, output_folder):
    """显示简单结果对话框"""
    # 创建结果窗口
    result_window = tk.Toplevel()
    result_window.title(title)
    result_window.geometry('500x200')
    result_window.transient()
    result_window.grab_set()
    
    # 居中窗口
    result_window.geometry('+{}+{}'.format(
        result_window.winfo_screenwidth() // 2 - 250,
        result_window.winfo_screenheight() // 2 - 100
    ))
    
    # 消息区域
    message_frame = ttk.Frame(result_window)
    message_frame.pack(fill='both', expand=True, padx=20, pady=20)
    
    # 消息文本
    message_label = ttk.Label(message_frame, text=message, justify='left', wraplength=450)
    message_label.pack(expand=True)
    
    # 按钮区域
    button_frame = ttk.Frame(result_window)
    button_frame.pack(fill='x', padx=20, pady=(0, 20))
    
    def open_folder_and_close():
        if output_folder and os.path.exists(output_folder):
            _open_folder(output_folder)
        result_window.destroy()
    
    def close_window():
        result_window.destroy()
    
    # 按钮
    if output_folder and os.path.exists(output_folder):
        ttk.Button(button_frame, text='打开输出文件夹', command=open_folder_and_close).pack(side='left', padx=(0, 10))
    
    ttk.Button(button_frame, text='关闭', command=close_window).pack(side='right')
    
    # 等待窗口关闭
    result_window.wait_window()


def _show_detailed_result(title, message, output_folder):
    """显示详细结果对话框"""
    # 创建结果窗口
    result_window = tk.Toplevel()
    result_window.title(title)
    result_window.geometry('700x500')
    result_window.transient()
    result_window.grab_set()
    
    # 居中窗口
    result_window.geometry('+{}+{}'.format(
        result_window.winfo_screenwidth() // 2 - 350,
        result_window.winfo_screenheight() // 2 - 250
    ))
    
    # 消息区域
    message_frame = ttk.Frame(result_window)
    message_frame.pack(fill='both', expand=True, padx=20, pady=20)
    
    # 滚动文本区域
    text_widget = scrolledtext.ScrolledText(message_frame, wrap=tk.WORD, state='normal')
    text_widget.pack(fill='both', expand=True)
    text_widget.insert('1.0', message)
    text_widget.configure(state='disabled')
    
    # 按钮区域
    button_frame = ttk.Frame(result_window)
    button_frame.pack(fill='x', padx=20, pady=(0, 20))
    
    def open_folder_and_close():
        if output_folder and os.path.exists(output_folder):
            _open_folder(output_folder)
        result_window.destroy()
    
    def close_window():
        result_window.destroy()
    
    # 按钮
    if output_folder and os.path.exists(output_folder):
        ttk.Button(button_frame, text='打开输出文件夹', command=open_folder_and_close).pack(side='left', padx=(0, 10))
    
    ttk.Button(button_frame, text='关闭', command=close_window).pack(side='right')
    
    # 等待窗口关闭
    result_window.wait_window()


def _open_folder(folder_path):
    """打开文件夹"""
    try:
        system = platform.system()
        if system == 'Windows':
            os.startfile(folder_path)
        elif system == 'Darwin':  # macOS
            subprocess.run(['open', folder_path])
        else:  # Linux
            subprocess.run(['xdg-open', folder_path])
    except Exception as e:
        messagebox.showerror('错误', f'无法打开文件夹: {e}')