112 lines
3.4 KiB
C#
112 lines
3.4 KiB
C#
using System.Linq.Expressions;
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using Fake.Application;
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using Fake.Domain.Exceptions;
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using Microsoft.AspNetCore.Mvc;
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using Oms.Application.Dtos.Kb;
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using Oms.Application.Dtos.Shared;
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using Oms.Application.Shared;
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using Oms.Domain.KbAggregate.Entities;
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using Oms.Domain.KbAggregate.Repositories;
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namespace Oms.Application.Services.Kb;
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/// <summary>
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/// 知识库分类管理。
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/// </summary>
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[ApiExplorerSettings(GroupName = "OMS-Kb")]
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public class KbCategoryService : ApplicationService
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{
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private IKbCategoryRepository CategoryRepository =>
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LazyServiceProvider.GetRequiredService<IKbCategoryRepository>();
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private IKbArticleRepository ArticleRepository =>
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LazyServiceProvider.GetRequiredService<IKbArticleRepository>();
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[HttpGet("/kb/admin/category/list")]
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public async Task<OmsItemsResult<KbCategoryOutput>> AdminListAsync([FromQuery] bool? enabledOnly = null)
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{
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Expression<Func<KbCategory, bool>> predicate = ExpressionPredicate.True<KbCategory>();
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if (enabledOnly is bool enabled)
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{
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predicate = ExpressionPredicate.AndAlso(predicate, x => x.Enabled == enabled);
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}
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var items = await CategoryRepository.GetListAsync(predicate);
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var ordered = items.OrderBy(x => x.SortOrder).ThenBy(x => x.Id).ToList();
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return new OmsItemsResult<KbCategoryOutput>
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{
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Items = ordered.Select(Map).ToList()
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};
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}
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[HttpPost("/kb/admin/category/save")]
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public async Task<KbCategoryOutput> SaveAsync(KbCategorySaveInput input)
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{
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var code = input.Code.Trim();
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var name = input.Name.Trim();
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if (string.IsNullOrWhiteSpace(code) || string.IsNullOrWhiteSpace(name))
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{
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throw new BusinessException("分类编码 / 名称不能为空");
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}
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KbCategory? entity = null;
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if (input.Id is > 0)
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{
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entity = await CategoryRepository.FirstOrDefaultAsync(x => x.Id == input.Id.Value);
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if (entity == null)
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{
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throw new BusinessException("分类不存在");
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}
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}
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if (await CategoryRepository.ExistsCodeAsync(code, entity?.Id))
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{
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throw new BusinessException($"分类编码已存在：{code}");
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}
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entity ??= new KbCategory();
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entity.Code = code;
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entity.Name = name;
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entity.SortOrder = input.SortOrder;
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entity.Enabled = input.Enabled;
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if (entity.Id > 0)
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{
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await CategoryRepository.UpdateAsync(entity);
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}
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else
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{
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await CategoryRepository.InsertAsync(entity);
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}
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return Map(entity);
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}
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[HttpPost("/kb/admin/category/delete")]
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public async Task DeleteAsync(KbCategoryDeleteInput input)
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{
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var entity = await CategoryRepository.FirstOrDefaultAsync(x => x.Id == input.Id);
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if (entity == null)
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{
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throw new BusinessException("分类不存在");
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}
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var articleCount = await ArticleRepository.CountByCategoryIdAsync(entity.Id);
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if (articleCount > 0)
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{
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throw new BusinessException($"该分类下仍有 {articleCount} 篇文章，无法删除");
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}
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await CategoryRepository.DeleteAsync(entity);
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}
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private static KbCategoryOutput Map(KbCategory x) => new()
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{
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Id = x.Id,
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Code = x.Code,
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Name = x.Name,
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SortOrder = x.SortOrder,
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Enabled = x.Enabled
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};
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}
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