按照软件设计文档开始重构代码01

DMS.Application/Services/VariableAppService.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>
+/// 实现变量管理的应用服务。
+/// </summary>
+public class VariableAppService : IVariableAppService
+{
+    private readonly IRepositoryManager _repoManager;
+    private readonly IMapper _mapper;
+
+    public VariableAppService(IRepositoryManager repoManager, IMapper mapper)
+    {
+        _repoManager = repoManager;
+        _mapper = mapper;
+    }
+
+    public async Task<VariableDto> GetVariableByIdAsync(int id)
+    {
+        var variable = await _repoManager.Variables.GetByIdAsync(id);
+        return _mapper.Map<VariableDto>(variable);
+    }
+
+    public async Task<List<VariableDto>> GetAllVariablesAsync()
+    {
+        var variables = await _repoManager.Variables.GetAllAsync();
+        return _mapper.Map<List<VariableDto>>(variables);
+    }
+
+    public async Task<int> CreateVariableAsync(VariableDto variableDto)
+    {
+        var variable = _mapper.Map<Variable>(variableDto);
+        await _repoManager.Variables.AddAsync(variable);
+        await _repoManager.CommitAsync();
+        return variable.Id;
+    }
+
+    public async Task UpdateVariableAsync(VariableDto variableDto)
+    {
+        var variable = await _repoManager.Variables.GetByIdAsync(variableDto.Id);
+        if (variable == null)
+        {
+            throw new ApplicationException($"Variable with ID {variableDto.Id} not found.");
+        }
+        _mapper.Map(variableDto, variable);
+        await _repoManager.Variables.UpdateAsync(variable);
+        await _repoManager.CommitAsync();
+    }
+
+    public async Task DeleteVariableAsync(int id)
+    {
+        await _repoManager.Variables.DeleteAsync(id);
+        await _repoManager.CommitAsync();
+    }
+}