static void AppendCommentList(StringBuilder sb, List <V1CommentModel> rootComments,
JsonSerializerOptions options)
{
var stack = new Stack <(List <V1CommentModel> List, int NextIndex)>();
stack.Push((rootComments, 0));
while (stack.Any())
{
var(list, index) = stack.Pop();
if (index == 0)
{
sb.Append("[");
}
if (index == list.Count)
{
sb.Append("]}");
continue;
}
stack.Push((list, index + 1));
var comment = list[index];
if (index == 0)
{
sb.Append("{");
}
else
{
sb.Append(",{");
}
AppendProperty(sb, "id", comment.Id, options);
AppendProperty(sb, "body", comment.Body, options);
AppendProperty(sb, "date", V1DateTimeOffsetConverter.ToJsonString(comment.Date), options);
AppendProperty(sb, "category", V1ModerationFlagConverter.ToJsonString(comment.Category), options);
AppendProperty(sb, "author", comment.Author, options);
AppendProperty(sb, "preview", comment.Preview, options);
sb.Append("\"comments\":");
stack.Push((comment.Comments, 0));
}
}
public async Task <ContentResult> Thread(int threadId)
{
var chattyThread = await _chattyProvider.GetThread(threadId);
var list = new List <V1RootCommentModel>();
var maxDepth = chattyThread.Posts.Max(x => x.Depth);
var lastCommentAtDepth = new V1CommentModel[maxDepth + 1];
var op = chattyThread.Posts[0];
var v1RootCommentModel =
new V1RootCommentModel
{
Comments = new List <V1CommentModel>(),
ReplyCount = chattyThread.Posts.Count,
Body = op.Body,
Date = op.Date,
Participants = GetParticipants(chattyThread),
Category = op.Category,
LastReplyId = $"{chattyThread.Posts.Max(x => x.Id)}",
Author = op.Author,
Preview = ThreadParser.PreviewFromBody(op.Body),
Id = $"{op.Id}"
};
foreach (var post in chattyThread.Posts.Skip(1))
{
var v1CommentModel =
new V1CommentModel
{
Comments = new List <V1CommentModel>(),
Body = post.Body,
Date = post.Date,
Category = post.Category,
Author = post.Author,
Preview = ThreadParser.PreviewFromBody(post.Body),
Id = $"{post.Id}"
};
if (post.Depth == 1)
{
v1RootCommentModel.Comments.Add(v1CommentModel);
}
else
{
lastCommentAtDepth[post.Depth - 1].Comments.Add(v1CommentModel);
}
lastCommentAtDepth[post.Depth] = v1CommentModel;
}
var response = new V1ThreadModel
{
Comments = new List <V1RootCommentModel> {
v1RootCommentModel
}
};
// the serializer has a maximum depth that is too low, even if you reconfigure it to the hard max.
var sb = new StringBuilder();
var options = new JsonSerializerOptions {
PropertyNamingPolicy = JsonNamingPolicy.CamelCase
};
sb.Append("{");
AppendProperty(sb, "id", v1RootCommentModel.Id, options);
AppendProperty(sb, "reply_count", v1RootCommentModel.ReplyCount, options);
AppendProperty(sb, "body", v1RootCommentModel.Body, options);
AppendProperty(sb, "date", V1DateTimeOffsetConverter.ToJsonString(v1RootCommentModel.Date), options);
AppendProperty(sb, "participants", v1RootCommentModel.Participants, options);
AppendProperty(sb, "category", V1ModerationFlagConverter.ToJsonString(v1RootCommentModel.Category), options);
AppendProperty(sb, "last_reply_id", v1RootCommentModel.LastReplyId, options);
AppendProperty(sb, "author", v1RootCommentModel.Author, options);
AppendProperty(sb, "preview", v1RootCommentModel.Preview, options);
sb.Append("\"comments\":[{");
AppendProperty(sb, "id", v1RootCommentModel.Id, options);
AppendProperty(sb, "body", v1RootCommentModel.Body, options);
AppendProperty(sb, "date", V1DateTimeOffsetConverter.ToJsonString(v1RootCommentModel.Date), options);
AppendProperty(sb, "category", V1ModerationFlagConverter.ToJsonString(v1RootCommentModel.Category), options);
AppendProperty(sb, "author", v1RootCommentModel.Author, options);
AppendProperty(sb, "preview", v1RootCommentModel.Preview, options);
sb.Append("\"comments\":");
AppendCommentList(sb, v1RootCommentModel.Comments, options);
sb.Append("]}");
return(Content(sb.ToString(), "application/json"));