拆分DataCenterService(未完成)

DMS.Application/Services/MenuManagementService.cs

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+using AutoMapper;
+using DMS.Application.DTOs;
+using DMS.Application.DTOs.Events;
+using DMS.Core.Models;
+using DMS.Application.Interfaces;
+using DMS.Core.Interfaces;
+using DMS.Core.Enums;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System;
+
+namespace DMS.Application.Services;
+
+/// <summary>
+/// 菜单管理服务，负责菜单相关的业务逻辑。
+/// </summary>
+public class MenuManagementService
+{
+    private readonly IMenuService _menuService;
+    private readonly ConcurrentDictionary<int, MenuBeanDto> _menus;
+    private readonly ConcurrentDictionary<int, MenuBeanDto> _menuTrees;
+
+    /// <summary>
+    /// 当菜单数据发生变化时触发
+    /// </summary>
+    public event EventHandler<MenuChangedEventArgs> MenuChanged;
+
+    public MenuManagementService(IMenuService menuService, 
+                                ConcurrentDictionary<int, MenuBeanDto> menus,
+                                ConcurrentDictionary<int, MenuBeanDto> menuTrees)
+    {
+        _menuService = menuService;
+        _menus = menus;
+        _menuTrees = menuTrees;
+    }
+
+    /// <summary>
+    /// 异步获取所有菜单DTO列表。
+    /// </summary>
+    public async Task<List<MenuBeanDto>> GetAllMenusAsync()
+    {
+        return await _menuService.GetAllMenusAsync();
+    }
+
+    /// <summary>
+    /// 异步根据ID获取菜单DTO。
+    /// </summary>
+    public async Task<MenuBeanDto> GetMenuByIdAsync(int id)
+    {
+        return await _menuService.GetMenuByIdAsync(id);
+    }
+
+    /// <summary>
+    /// 异步创建一个新菜单。
+    /// </summary>
+    public async Task<int> CreateMenuAsync(MenuBeanDto menuDto)
+    {
+        return await _menuService.CreateMenuAsync(menuDto);
+    }
+
+    /// <summary>
+    /// 异步更新一个已存在的菜单。
+    /// </summary>
+    public async Task UpdateMenuAsync(MenuBeanDto menuDto)
+    {
+        await _menuService.UpdateMenuAsync(menuDto);
+    }
+
+    /// <summary>
+    /// 异步删除一个菜单。
+    /// </summary>
+    public async Task DeleteMenuAsync(int id)
+    {
+        await _menuService.DeleteMenuAsync(id);
+    }
+
+    /// <summary>
+    /// 在内存中添加菜单
+    /// </summary>
+    public void AddMenuToMemory(MenuBeanDto menuDto)
+    {
+        if (_menus.TryAdd(menuDto.Id, menuDto))
+        {
+            MenuBeanDto parentMenu = null;
+            if (menuDto.ParentId > 0 && _menus.TryGetValue(menuDto.ParentId, out var parent))
+            {
+                parentMenu = parent;
+                parent.Children.Add(menuDto);
+            }
+
+            OnMenuChanged(new MenuChangedEventArgs(DataChangeType.Added, menuDto, parentMenu));
+        }
+    }
+
+    /// <summary>
+    /// 在内存中更新菜单
+    /// </summary>
+    public void UpdateMenuInMemory(MenuBeanDto menuDto)
+    {
+        _menus.AddOrUpdate(menuDto.Id, menuDto, (key, oldValue) => menuDto);
+
+        MenuBeanDto parentMenu = null;
+        if (menuDto.ParentId > 0 && _menus.TryGetValue(menuDto.ParentId, out var parent))
+        {
+            parentMenu = parent;
+        }
+
+        OnMenuChanged(new MenuChangedEventArgs(DataChangeType.Updated, menuDto, parentMenu));
+    }
+
+    /// <summary>
+    /// 在内存中删除菜单
+    /// </summary>
+    public void RemoveMenuFromMemory(int menuId)
+    {
+        if (_menus.TryRemove(menuId, out var menuDto))
+        {
+            MenuBeanDto parentMenu = null;
+            if (menuDto.ParentId > 0 && _menus.TryGetValue(menuDto.ParentId, out var parent))
+            {
+                parentMenu = parent;
+            }
+
+            OnMenuChanged(new MenuChangedEventArgs(DataChangeType.Deleted, menuDto, parentMenu));
+        }
+    }
+
+    /// <summary>
+    /// 获取根菜单列表
+    /// </summary>
+    public List<MenuBeanDto> GetRootMenus()
+    {
+        return _menus.Values.Where(m => m.ParentId == 0)
+                    .ToList();
+    }
+
+    /// <summary>
+    /// 根据父级ID获取子菜单列表
+    /// </summary>
+    /// <param name="parentId">父级菜单ID</param>
+    /// <returns>子菜单列表</returns>
+    public List<MenuBeanDto> GetChildMenus(int parentId)
+    {
+        return _menus.Values.Where(m => m.ParentId == parentId)
+                    .ToList();
+    }
+
+    /// <summary>
+    /// 构建菜单树结构
+    /// </summary>
+    public void BuildMenuTree()
+    {
+        // 清空现有菜单树
+        _menuTrees.Clear();
+
+        // 获取所有根菜单
+        var rootMenus = GetRootMenus();
+
+        // 将根菜单添加到菜单树中
+        foreach (var rootMenu in rootMenus)
+        {
+            _menuTrees.TryAdd(rootMenu.Id, rootMenu);
+        }
+    }
+
+    /// <summary>
+    /// 触发菜单变更事件
+    /// </summary>
+    protected virtual void OnMenuChanged(MenuChangedEventArgs e)
+    {
+        MenuChanged?.Invoke(this, e);
+    }
+}