/// <summary>
/// 获取Blog的评论
/// </summary>
/// <param name="blogId">BlogID</param>
/// <param name="pageIndex"></param>
/// <param name="pageSize"></param>
/// <returns></returns>
public async Task<Tuple<int, List<CommentDTO>>> GetCommentsAsync(long blogId, int pageIndex, int pageSize)
{
using(KoalaBlogDbContext dbContext = new KoalaBlogDbContext())
{
int totalCommentCount = 0;
List<CommentDTO> commentDtoList = null;
PersonHandler perHandler = new PersonHandler(dbContext);
AvatarHandler avatarHandler = new AvatarHandler(dbContext);
CommentHandler commentHandler = new CommentHandler(dbContext);
CommentXContentHandler cxContentHandler = new CommentXContentHandler(dbContext);
CommentXCommentHandler cxCommentHandler = new CommentXCommentHandler(dbContext);
//1. 获取Blog评论列表。
var comments = await commentHandler.GetCommentsAsync(blogId, pageIndex, pageSize);
if (comments.Count > 0)
{
commentDtoList = new List<CommentDTO>();
foreach (var comment in comments)
{
CommentDTO commentDto = comment.ToDTO();
//2. 判断Person对象是否为空，如果为空则获取。
if (commentDto.Person == null)
{
var personEntity = await perHandler.GetByIdAsync(comment.PersonID);
if (personEntity != null)
{
commentDto.Person = personEntity.ToDTO();
//2.1 判断头像Url是否已经获取。
if (string.IsNullOrEmpty(commentDto.Person.AvatarUrl))
{
commentDto.Person.AvatarUrl = await avatarHandler.GetActiveAvatarUrlByPersonId(comment.PersonID);
}
}
}
else
{
//2.2 如果Person对象不为空，判断头像Url是否已经获取。
if (string.IsNullOrEmpty(commentDto.Person.AvatarUrl))
{
commentDto.Person.AvatarUrl = await avatarHandler.GetActiveAvatarUrlByPersonId(comment.PersonID);
}
}
//3. 判断Contents集合是否为空，如果为空则获取。
if (commentDto.Contents == null)
{
List<Content> contentList = await cxContentHandler.GetContentsAsync(comment.ID);
if (contentList != null && contentList.Count > 0)
{
commentDto.Contents = new List<ContentDTO>();
foreach (var content in contentList)
{
ContentDTO contentDto = content.ToDTO();
commentDto.Contents.Add(contentDto);
}
}
}
//4. 判断此评论是否评论了其他的评论。
if (commentDto.BaseComment == null)
{
Comment baseComment = await cxCommentHandler.GetBaseCommentByCommentIdAsync(comment.ID);
if (baseComment != null)
{
commentDto.BaseComment = baseComment.ToDTO();
//4.1 判断Person对象是否为空，如果为空则获取，这里暂时不需要获取Avatar。
if (commentDto.BaseComment.Person == null)
{
var personEntity = await perHandler.GetByIdAsync(baseComment.PersonID);
if (personEntity != null)
{
commentDto.BaseComment.Person = personEntity.ToDTO();
}
}
}
}
//5. 获取评论点赞数量Task。
Task<int> likeCountTask = GetCommentLikeCountAsync(comment.ID);
//6. 判断用户是否点赞了此评论Task。
Task<bool> isLikeTask = IsLikeAsync(CurrentThreadIdentityObject.PersonID, comment.ID);
commentDto.IsLike = await isLikeTask;
commentDto.LikeCount = await likeCountTask;
commentDtoList.Add(commentDto);
}
//7. 获取Blog的总评论数量。
totalCommentCount = await GetCommentCountAsync(blogId);
}
return new Tuple<int, List<CommentDTO>>(totalCommentCount, commentDtoList);
}
}
/// <summary>
/// 获取评论的Content集合
/// </summary>
/// <param name="commentId">CommentID</param>
/// <returns></returns>
public async Task<List<Content>> GetCommentContentsAsync(long commentId)
{
using (KoalaBlogDbContext dbContext = new KoalaBlogDbContext())
{
CommentXContentHandler cxcHandler = new CommentXContentHandler(dbContext);
return await cxcHandler.GetContentsAsync(commentId);
}
}
