public async Task <PostWithDetailsDto> GetByUrlAsync(GetPostInput input)
{
var post = await _postRepository.GetPostByUrl(input.BlogId, input.Url);
var postDto = ObjectMapper.Map <Post, PostWithDetailsDto>(post);
var tagIds = (await _postTagRepository.GetListAsync()).Where(pt => pt.PostId == postDto.Id);
var tags = await _tagRepository.GetListAsync(tagIds.Select(t => t.TagId));
postDto.Tags = ObjectMapper.Map <List <Tag>, List <TagDto> >(tags);
return(postDto);
}
public async Task <List <PopularTagDto> > GetPopularTags(GetPopularTagsInput input)
{
var postTags = await _postTagRepository.GetListAsync();
var postTagsGrouped = postTags.GroupBy(x => x.PostId)
.OrderByDescending(g => g.Count())
.SelectMany(g => g).Select(t => t.TagId).Distinct().ToList();
var popularTagDtos = new List <PopularTagDto>();
for (var i = 0; i < input.ResultCount && i < postTagsGrouped.Count; i++)
{
var tagId = postTagsGrouped[i];
var count = postTags.Count(t => t.TagId == tagId);
if (count < input.MinimumPostCount)
{
break;
}
var tag = await _tagRepository.GetAsync(tagId);
popularTagDtos.Add(new PopularTagDto
{
Tag = ObjectMapper.Map <Tag, TagDto>(tag),
Count = count
});
}
return(popularTagDtos);
}
public async Task <ListResultDto <PostWithDetailsDto> > GetListByBlogId(Guid id)
{
var posts = _postRepository.GetPostsByBlogId(id);
var postDtos = new List <PostWithDetailsDto>(
ObjectMapper.Map <List <Post>, List <PostWithDetailsDto> >(posts));
foreach (var postDto in postDtos)
{
var tagIds = (await _postTagRepository.GetListAsync()).Where(pt => pt.PostId == postDto.Id);
var tags = await _tagRepository.GetListAsync(tagIds.Select(t => t.TagId));
postDto.Tags = ObjectMapper.Map <List <Tag>, List <TagDto> >(tags);
postDto.CommentCount = (await _commentRepository.GetListAsync()).Count(p => p.PostId == postDto.Id);
}
return(new ListResultDto <PostWithDetailsDto>(postDtos));
}
private async Task RemoveOldTags(List <string> newTags, Post post)
{
var oldTags = (await _postTagRepository.GetListAsync()).Where(pt => pt.PostId == post.Id).ToList();
foreach (var oldTag in oldTags)
{
var tag = await _tagRepository.GetAsync(oldTag.TagId);
var oldTagNameInNewTags = newTags.FirstOrDefault(t => t == tag.Name);
if (oldTagNameInNewTags == null)
{
await _postTagRepository.DeleteAsync(oldTag);
tag.DecreaseUsageCount();
await _tagRepository.UpdateAsync(tag);
}
else
{
newTags.Remove(oldTagNameInNewTags);
}
}
}
public List <PostTag> GetPostTagList(Expression <Func <PostTag, bool> > predicate)
{
return(_postTag.GetListAsync(predicate).Result);
}
