#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Linux 存储管理器 - 统一入口 (Tkinter 版本)
统一使用 Tkinter GUI 后端
支持 Arch Linux 和 CentOS/RHEL 8
"""

import sys
import os
import logging

# 确保可以导入本地模块
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from platform_compat import check_prerequisites


def setup_logging():
    """配置日志"""
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
        handlers=[
            logging.StreamHandler(sys.stdout)
        ]
    )


def show_error_dialog(title, message):
    """显示错误对话框"""
    print(f"\n{'='*60}")
    print(f"错误: {title}")
    print(f"{'='*60}")
    print(message)
    print(f"{'='*60}\n")
    
    # 使用 tkinter 显示图形错误对话框
    try:
        import tkinter as tk
        from tkinter import messagebox
        root = tk.Tk()
        root.withdraw()
        messagebox.showerror(title, message)
        root.destroy()
    except Exception:
        pass


def get_installation_guide():
    """获取安装指南"""
    return """安装指南:

Arch Linux:
  sudo pacman -S python python-tkinter parted mdadm lvm2
  sudo pacman -S dosfstools e2fsprogs xfsprogs ntfs-3g
  pip3 install pexpect

CentOS 8 / RHEL 8:
  sudo yum install -y python3 python3-tkinter parted mdadm lvm2
  sudo yum install -y dosfstools e2fsprogs xfsprogs ntfs-3g
  pip3 install pexpect
"""


def main():
    """主入口函数"""
    setup_logging()
    logger = logging.getLogger(__name__)
    
    logger.info("="*60)
    logger.info("Linux 存储管理器启动 (Tkinter)")
    logger.info("="*60)
    
    # 检查 tkinter 是否可用
    try:
        import tkinter as tk
        logger.info("Tkinter 已加载")
    except ImportError as e:
        show_error_dialog(
            "启动失败",
            f"无法加载 Tkinter: {e}\n\n"
            "请安装 tkinter:\n"
            "  CentOS 8: sudo yum install python3-tkinter\n"
            "  Arch Linux: sudo pacman -S tk\n"
        )
        sys.exit(1)
    
    # 检查前提条件
    passed, errors, warnings = check_prerequisites()
    
    if not passed:
        error_msg = "系统缺少必要的依赖:\n\n"
        for e in errors:
            error_msg += f"  • {e}\n"
        error_msg += "\n" + get_installation_guide()
        
        show_error_dialog("启动失败", error_msg)
        sys.exit(1)
    
    # 显示警告
    for w in warnings:
        logger.warning(w)
    
    logger.info("启动 Tkinter 主窗口")
    
    try:
        # 统一使用 Tkinter 版本
        from mainwindow_tkinter import MainWindow
        
        root = tk.Tk()
        app = MainWindow(root)
        root.mainloop()
            
    except ImportError as e:
        logger.exception("导入模块失败")
        show_error_dialog(
            "启动失败",
            f"无法加载 GUI 模块: {e}\n\n"
            "请检查依赖是否正确安装。\n\n" +
            get_installation_guide()
        )
        sys.exit(1)
    except Exception as e:
        logger.exception("启动过程中发生错误")
        show_error_dialog("启动失败", f"发生错误: {e}")
        sys.exit(1)


if __name__ == "__main__":
    main()