main.py

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

# 添加项目路径
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

from database import DatabaseConnection
from dao import BookDAO, PurchaseDAO, EliminationDAO, BorrowingDAO, InventoryDAO
from services import BookService, QueryService, StatisticsService
from ui import LibraryManagementSystem

def main():
    """主程序入口"""
    try:
        # 初始化数据库连接
        db_path = 'library.db'
        db = DatabaseConnection(db_path)
        db.initialize_database()
        
        # 初始化DAO层
        book_dao = BookDAO(db)
        purchase_dao = PurchaseDAO(db)
        elimination_dao = EliminationDAO(db)
        borrowing_dao = BorrowingDAO(db)
        inventory_dao = InventoryDAO(db)
        
        # 初始化服务层
        book_service = BookService(db, book_dao, purchase_dao, 
                                 elimination_dao, borrowing_dao, inventory_dao)
        query_service = QueryService(book_dao, purchase_dao, elimination_dao, 
                                   borrowing_dao, inventory_dao)
        stats_service = StatisticsService(book_dao, purchase_dao, elimination_dao,
                                        borrowing_dao, inventory_dao)
        
        # 创建主窗口
        root = tk.Tk()
        root.title("图书管理系统")
        root.geometry("1280x720")
        
        # 设置主题
        style = ttk.Style()
        style.theme_use('clam')
        
        # 创建应用
        app = LibraryManagementSystem(root, book_service, query_service, stats_service, db)
        app.pack(fill=tk.BOTH, expand=True)
        
        # 运行主循环
        root.protocol("WM_DELETE_WINDOW", lambda: on_closing(root, db))
        root.mainloop()
        
    except Exception as e:
        messagebox.showerror("启动错误", f"程序启动失败: {str(e)}")
        sys.exit(1)

def on_closing(root, db):
    """窗口关闭时的处理"""
    if messagebox.askokcancel("退出", "确定要退出程序吗？"):
        if db:
            db.close_connection()
        root.destroy()

if __name__ == "__main__":
    main()