public ArticleService(AngularWikiDbContext dbContext)
{
_dbContext = dbContext;
_articleRepository = new ArticleRepository(dbContext);
_articleTagRepository = new ArticleTagRepository(dbContext);
}
/// <summary>
/// 删除所有已经绑定的文章标签
/// </summary>
/// <param name="articleId"></param>
/// <returns></returns>
public async Task <bool> RemoveAlreadyExistArticleTagAsync(int articleId)
{
var articleTags = ArticleTagRepository.GetModels(a => a.articleId == articleId);
foreach (var item in articleTags.ToList())
{
await ArticleTagRepository.DeleteAsync(item);
}
return(true);
}
/// <summary>
/// 根据文章id获取所有标签
/// </summary>
/// <param name="articleId"></param>
/// <returns></returns>
public async Task <List <TagDTO> > GetTagListByArticleIdAsync(int articleId)
{
var articleTags = ArticleTagRepository.GetModels(a => a.articleId == articleId);
List <ArticleTagEntity> articleTagEntities = articleTags.ToList();
List <int> ids = articleTagEntities.Select(e => e.tagId).ToList();
var tags = TagRepository.GetModels(a => ids.Contains(a.id));
List <TagEntity> tagEntitys = await tags.ToListAsync();
return(Mapper.Map <List <TagDTO> >(tagEntitys));;
}
/// <summary>
/// 根据标签id获取
/// </summary>
/// <param name="limit"></param>
/// <param name="pageIndex"></param>
/// <param name="tagId"></param>
/// <returns></returns>
public async Task <PageDTO <ArticleDTO> > GetArticleListIdByTagIdAsync(int limit, int pageIndex, int tagId)
{
return(await Task.Run(() =>
{
var articleTags = ArticleTagRepository.GetModelsByPage(limit, pageIndex, false,
a => a.id, a => a.id == tagId, out var pageCount);
var articles = ArticleRepository.GetModels(
a => articleTags.Select(c => c.articleId).ToList().Contains(a.id));
var articleDtOs = Mapper.Map <List <ArticleDTO> >(articles.ToList());
return new PageDTO <ArticleDTO>(pageIndex, limit, pageCount, articleDtOs);
}));
}
public Search(
SearchRepository searchRepository,
ArticleRepository articleRepository,
ComentRepository comentRepository,
LikeRepository likeRepository,
TagRepository tagRepository,
ArticleTagRepository articleTagRepository)
{
_searchRepository = searchRepository;
_articleRepository = articleRepository;
_comentRepository = comentRepository;
_tagRepository = tagRepository;
_articleTagRepository = articleTagRepository;
}
