private CommentShell MakeCommentShell(Comment comment, int depth, CommentShell priorSibling)
{
var result = new CommentShell
{
Comment = new CommentViewModel(this, comment, comment.LinkId, depth),
Id = comment.Id,
Parent = comment.ParentId.StartsWith("t1_") ? comment.ParentId.Substring("t1_".Length) : null,
PriorSibling = priorSibling != null ? priorSibling.Id : null,
InsertionWaveIndex = _commentOriginStack.Count - 1,
OriginType = _commentOriginStack.Last()
};
return result;
}
private void MergeComment(CommentShell priorSibling, Comment thingData)
{
priorSibling.OriginType = CommentOriginType.Edited;
priorSibling.InsertionWaveIndex = _commentOriginStack.Count - 1;
priorSibling.Comment.Thing = thingData;
}
private CommentShell LastSibling(CommentShell shell)
{
var currentShell = shell;
while (currentShell.NextSibling != null)
{
//this is the end as far as we're concerned
CommentShell tmpShell;
if (!_comments.TryGetValue(currentShell.NextSibling, out tmpShell))
{
return tmpShell;
}
else
currentShell = tmpShell;
}
return null;
}
private void MergeComments(CommentShell parent, IEnumerable<Thing> things, int depth = 0)
{
CommentShell priorSibling = parent != null ? LastChild(parent) : null;
MoreViewModel priorMore = null;
foreach (var child in things)
{
if(child.Data is More && ((More)child.Data).Children.Count > 0)
{
if(priorMore != null)
{
priorMore.Ids.AddRange(((More)child.Data).Children);
priorMore.Count += ((More)child.Data).Count;
}
else
{
var firstId = ((More)child.Data).Children.First();
if (priorSibling == null) //need to attach to parent
{
parent.FirstChild = firstId;
}
else
{
priorSibling.NextSibling = firstId;
}
if (!_knownUnloaded.ContainsKey(firstId))
{
priorMore = new MoreViewModel(this, parent != null ? parent.Id : null, firstId, ((More)child.Data).Children,((More)child.Data).Count, depth );
_knownUnloaded.Add(firstId, priorMore);
}
}
}
else if (child.Data is Comment)
{
priorMore = null;
var commentId = ((Comment)child.Data).Id;
if (priorSibling == null && parent == null)
{
if (_firstChild != null)
{
priorSibling = LastSibling(_comments[_firstChild]);
}
else
{
_firstChild = commentId;
}
}
if (priorSibling == null && parent != null) //need to attach to parent
{
parent.FirstChild = commentId;
}
else if (priorSibling != null)
{
priorSibling.NextSibling = commentId;
}
if (!_comments.ContainsKey(commentId))
{
priorSibling = MakeCommentShell(child.Data as Comment, depth, priorSibling);
_comments.Add(commentId, priorSibling);
}
else
{
var current = _comments[commentId];
current.PriorSibling = priorSibling != null ? priorSibling.Id : null;
current.NextSibling = null;
priorSibling = current;
MergeComment(priorSibling, child.Data as Comment);
}
var replies = ((Comment)child.Data).Replies;
if (replies != null)
MergeComments(priorSibling, replies.Data.Children, depth + 1);
}
}
}
private CommentShell LastChild(CommentShell shell)
{
if (shell.FirstChild != null)
{
CommentShell currentShell;
if (_comments.TryGetValue(shell.FirstChild, out currentShell))
{
return LastSibling(currentShell);
}
}
return null;
}
