按照软件设计文档开始重构代码01

DMS.Application/Services/MenuService.cs

@@ -0,0 +1,60 @@
+using AutoMapper;
+using DMS.Core.Interfaces;
+using DMS.Core.Models;
+using DMS.Application.DTOs;
+using DMS.Application.Interfaces;
+
+namespace DMS.Application.Services;
+
+/// <summary>
+/// 实现菜单管理的应用服务。
+/// </summary>
+public class MenuService : IMenuService
+{
+    private readonly IRepositoryManager _repoManager;
+    private readonly IMapper _mapper;
+
+    public MenuService(IRepositoryManager repoManager, IMapper mapper)
+    {
+        _repoManager = repoManager;
+        _mapper = mapper;
+    }
+
+    public async Task<MenuBeanDto> GetMenuByIdAsync(int id)
+    {
+        var menu = await _repoManager.Menus.GetByIdAsync(id);
+        return _mapper.Map<MenuBeanDto>(menu);
+    }
+
+    public async Task<List<MenuBeanDto>> GetAllMenusAsync()
+    {
+        var menus = await _repoManager.Menus.GetAllAsync();
+        return _mapper.Map<List<MenuBeanDto>>(menus);
+    }
+
+    public async Task<int> CreateMenuAsync(MenuBeanDto menuDto)
+    {
+        var menu = _mapper.Map<MenuBean>(menuDto);
+        await _repoManager.Menus.AddAsync(menu);
+        await _repoManager.CommitAsync();
+        return menu.Id;
+    }
+
+    public async Task UpdateMenuAsync(MenuBeanDto menuDto)
+    {
+        var menu = await _repoManager.Menus.GetByIdAsync(menuDto.Id);
+        if (menu == null)
+        {
+            throw new ApplicationException($"Menu with ID {menuDto.Id} not found.");
+        }
+        _mapper.Map(menuDto, menu);
+        await _repoManager.Menus.UpdateAsync(menu);
+        await _repoManager.CommitAsync();
+    }
+
+    public async Task DeleteMenuAsync(int id)
+    {
+        await _repoManager.Menus.DeleteAsync(id);
+        await _repoManager.CommitAsync();
+    }
+}