chore 优化代码

modules/admin/src/KonSoft.Admin.Application/ApplicationServices/ProductAppAppService.cs

@@ -0,0 +1,102 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using KonSoft.Admin.Dtos;
+using KonSoft.Admin.Entities;
+using KonSoft.Admin.IApplicationServices;
+using KonSoft.Admin.IRepositories;
+using Volo.Abp;
+using Volo.Abp.Application.Dtos;
+using Volo.Abp.Application.Services;
+using Volo.Abp.Domain.Repositories;
+
+namespace KonSoft.Admin.ApplicationServices;
+
+public class ProductAppAppService(IProductRepository repository) : ApplicationService, IProductAppService
+{
+    private readonly IProductRepository repository = repository;
+
+    /// <summary>
+    ///     创建产品
+    /// </summary>
+    public async Task CreateAsync(CreateProductDto input)
+    {
+        var id = Guid.NewGuid();
+        var product = new Product(id, input.Name, input.Code, input.Price, input.Description, input.Type,
+            input.ParentId, input.Status, input.Order);
+        await repository.InsertAsync(product);
+    }
+
+    /// <summary>
+    ///     删除
+    /// </summary>
+    public async Task DeleteAsync(Guid id)
+    {
+        await repository.DeleteAsync(x => x.Id == id);
+    }
+
+    /// <summary>
+    ///     查询
+    /// </summary>
+    public async Task<ProductDto> GetAsync(Guid id)
+    {
+        var product = await repository.GetAsync(x => x.Id == id);
+        return ObjectMapper.Map<Product, ProductDto>(product);
+    }
+
+    /// <summary>
+    ///     查询集合
+    /// </summary>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    public async Task<PagedResultDto<ProductDto>> GetListAsync(PagedResultRequestDto input)
+    {
+        var query = await repository.GetPageRootListAsync(input.SkipCount, input.MaxResultCount,
+            x => x.ParentId == null);
+        var all = await repository.GetListAsync(x => x.ParentId != null);
+        foreach (var item in query)
+        {
+            BuildChildren(item, all);
+        }
+
+        var totalCount = await repository.CountAsync(x => x.ParentId == null);
+
+        var productDtos = ObjectMapper.Map<List<Product>, List<ProductDto>>(query);
+
+        return new PagedResultDto<ProductDto>(totalCount, productDtos);
+    }
+
+    /// <summary>
+    ///     修改
+    /// </summary>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    public async Task UpdateAsync(UpdateProductDto input)
+    {
+        // 根据ID查询订单，如果不存在则抛出异常【修改前端必然看到了,数据若查不到提示自定义异常信息】
+        var order = await repository.FindAsync(o => o.Id == input.Id) ??
+                    throw new BusinessException("商品找不到").WithData("Id", input.Id);
+
+        // 将输入的DTO字段映射到订单实体
+        ObjectMapper.Map(input, order);
+
+        // 更新订单
+        await repository.UpdateAsync(order);
+    }
+
+    private static void BuildChildren(Product parent, List<Product> all)
+    {
+        var children = all
+            .Where(x => x.ParentId == parent.Id)
+            .OrderBy(x => x.Order)
+            .ToList();
+
+        parent.Children = children;
+
+        foreach (var child in children)
+        {
+            BuildChildren(child, all); // 递归
+        }
+    }
+}