private MessageNode[] BuildTopicTree(
IReadOnlyDictionary <int, MessageInfo[]> messageMap,
int level,
TopicNode topic,
MessageNode parent)
{
if (!messageMap.TryGetValue(parent.Message.ID, out var children))
{
return(Array.Empty <MessageNode>());
}
level += 1;
return(children
.Select(c =>
{
var res = new MessageNode(c.IsRead, MarkMessageReadAsync)
{
Message = c,
Level = level,
TopicNode = topic,
ParentNode = parent
};
res.Children = BuildTopicTree(messageMap, level, topic, res);
return res;
})
.ToArray());
}
private async Task MarkMessageReadAsync(MessageNode msg)
{
if (msg.IsRead == true || msg.Message.ID != Message.Message.ID)
{
return;
}
await _api.Client.ReadMarks.AddReadMarksAsync(new [] { msg.Message.ID });
if (msg.TopicNode != null)
{
lock (msg.TopicNode)
msg.TopicNode.TopicUnreadCount = msg.TopicNode.TopicUnreadCount - 1;
}
msg.IsRead = true;
}