Blogging module post delete in app services and repositories

modules/blogging/src/Volo.Blogging.Application.Contracts/Volo/Blogging/Posts/IPostAppService.cs

@@ -13,6 +13,8 @@ namespace Volo.Blogging.Posts
 
         Task<PostWithDetailsDto> GetAsync(Guid id);
 
+        Task DeleteAsync(Guid id);
+
         Task<PostWithDetailsDto> CreateAsync(CreatePostDto input);
 
         Task<PostWithDetailsDto> UpdateAsync(Guid id, UpdatePostDto input);

modules/blogging/src/Volo.Blogging.Application/Volo/Blogging/Posts/PostAppService.cs

@@ -41,7 +41,7 @@ namespace Volo.Blogging.Posts
 
             foreach (var postDto in postDtos)
             {
-                postDto.Tags = await GetTagsOfPost(postDto);
+                postDto.Tags = await GetTagsOfPost(postDto.Id);
 
                 postDto.CommentCount = await _commentRepository.GetCommentCountOfPostAsync(postDto.Id);
             }
@@ -63,7 +63,7 @@ namespace Volo.Blogging.Posts
 
             var postDto = ObjectMapper.Map<Post, PostWithDetailsDto>(post);
 
-            postDto.Tags = await GetTagsOfPost(postDto);
+            postDto.Tags = await GetTagsOfPost(postDto.Id);
 
             return postDto;
         }
@@ -74,11 +74,21 @@ namespace Volo.Blogging.Posts
 
             var postDto = ObjectMapper.Map<Post, PostWithDetailsDto>(post);
 
-            postDto.Tags = await GetTagsOfPost(postDto);
+            postDto.Tags = await GetTagsOfPost(postDto.Id);
 
             return postDto;
         }
 
+        public async Task DeleteAsync(Guid id)
+        {
+            var tags = await GetTagsOfPost(id);
+            _tagRepository.DecreaseUsageCountOfTags(tags.Select(t=>t.Id).ToList());
+            _postTagRepository.DeleteOfPost(id);
+            _commentRepository.DeleteOfPost(id);
+
+            await _postRepository.DeleteAsync(id);
+        }
+
         [Authorize(BloggingPermissions.Posts.Update)]
         public async Task<PostWithDetailsDto> UpdateAsync(Guid id, UpdatePostDto input)
         {
@@ -171,9 +181,9 @@ namespace Volo.Blogging.Posts
             }
         }
 
-        private async Task<List<TagDto>> GetTagsOfPost(PostWithDetailsDto postDto)
+        private async Task<List<TagDto>> GetTagsOfPost(Guid id)
         {
-            var tagIds = (await _postTagRepository.GetListAsync()).Where(pt => pt.PostId == postDto.Id);
+            var tagIds = (await _postTagRepository.GetListAsync()).Where(pt => pt.PostId == id);
 
             var tags = await _tagRepository.GetListAsync(tagIds.Select(t => t.TagId));
 

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/Comments/ICommentRepository.cs

@@ -14,5 +14,7 @@ namespace Volo.Blogging.Comments
         Task<int> GetCommentCountOfPostAsync(Guid postId);
 
         Task<List<Comment>> GetRepliesOfComment(Guid id);
+
+        void DeleteOfPost(Guid id);
     }
 }

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/Posts/IPostTagRepository.cs

@@ -1,8 +1,11 @@
-using Volo.Abp.Domain.Repositories;
+using System;
+using System.Threading.Tasks;
+using Volo.Abp.Domain.Repositories;
 
 namespace Volo.Blogging.Posts
 {
     public interface IPostTagRepository : IBasicRepository<PostTag>
     {
+        void DeleteOfPost(Guid id);
     }
 }

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/Tagging/ITagRepository.cs

@@ -12,5 +12,7 @@ namespace Volo.Blogging.Tagging
         Task<Tag> GetByNameAsync(string name);
 
         Task<List<Tag>> GetListAsync(IEnumerable<Guid> ids);
+
+        void DecreaseUsageCountOfTags(List<Guid> id);
     }
 }

modules/blogging/src/Volo.Blogging.EntityFrameworkCore/Volo/Blogging/Comments/EfCoreCommentRepository.cs

@@ -35,5 +35,11 @@ namespace Volo.Blogging.Comments
             return await DbSet
                 .Where(a => a.RepliedCommentId == id).ToListAsync();
         }
+
+        public void DeleteOfPost(Guid id)
+        {
+            var recordsToDelete = DbSet.Where(pt => pt.PostId == id);
+            DbSet.RemoveRange(recordsToDelete);
+        }
     }
 }

modules/blogging/src/Volo.Blogging.EntityFrameworkCore/Volo/Blogging/Posts/EfCorePostTagRepository.cs

@@ -1,4 +1,7 @@
-using Volo.Abp.Domain.Repositories.EntityFrameworkCore;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Volo.Abp.Domain.Repositories.EntityFrameworkCore;
 using Volo.Abp.EntityFrameworkCore;
 using Volo.Blogging.EntityFrameworkCore;
 
@@ -9,5 +12,11 @@ namespace Volo.Blogging.Posts
         public EfCorePostTagRepository(IDbContextProvider<IBloggingDbContext> dbContextProvider) : base(dbContextProvider)
         {
         }
+
+        public void DeleteOfPost(Guid id)
+        {
+            var recordsToDelete = DbSet.Where(pt=>pt.PostId == id);
+            DbSet.RemoveRange(recordsToDelete);
+        }
     }
 }

modules/blogging/src/Volo.Blogging.EntityFrameworkCore/Volo/Blogging/Tagging/EfCoreTagRepository.cs

@@ -30,5 +30,15 @@ namespace Volo.Blogging.Tagging
         {
             return await DbSet.Where(c => ids.Contains(c.Id)).ToListAsync();
         }
+
+        public void DecreaseUsageCountOfTags(List<Guid> ids)
+        {
+            var tags = DbSet.Where(t => ids.Any(id => id == t.Id));
+
+            foreach (var tag in tags)
+            {
+                tag.DecreaseUsageCount();
+            }
+        }
     }
 }