private static ChatUserMessage Parse(ChatUser fromUser, string text, IList <ChatUser> allUsers, bool ignoreTagAndUsers)
{
List <string> tags = new List <string>();
List <ChatUser> toUsers = new List <ChatUser>();
if (!ignoreTagAndUsers)
{
// If the message is tagged, send to all users, don't even parse usernames
if (TryGetTags(text, out tags, out text))
{
}
else
{
toUsers = GetWhisperUsers(text, allUsers, out text);
}
}
ChatUserMessage message = null;
if (MatchesCommand(text, Commands.IMAGEURL))
{
string imageUrl = RemoveCommand(text, Commands.IMAGEURL);
message = new ImageUrlChatMessage {
ImageUrl = imageUrl
};
}
else if (MatchesCommand(text, Commands.WEB))
{
string url = RemoveCommand(text, Commands.WEB);
message = new WebUrlChatMessage {
Url = url
};
}
else if (MatchesCommand(text, Commands.STATUS_UPDATE))
{
string status = RemoveCommand(text, Commands.STATUS_UPDATE);
message = new UserStatusMessage {
Text = status
};
}
else if (MatchesCommand(text, Commands.ASCII))
{
string asciiText = RemoveCommand(text, Commands.ASCII);
message = new ASCIIChatMessage {
Text = asciiText
};
}
else if (MatchesCommand(text, Commands.XAML))
{
string xaml = RemoveCommand(text, Commands.XAML);
message = new XamlChatMessage {
Xaml = xaml
};
}
else if (MatchesCommand(text, Commands.MEME))
{
string memeText = RemoveCommand(text, Commands.MEME);
message = MemeChatMessage.FromString(memeText);
}
else if (MatchesCommand(text, Commands.POLL))
{
string pollText = RemoveCommand(text, Commands.POLL);
message = PollMessage.FromString(pollText);
}
else if (MatchesCommand(text, Commands.LINK) || HyperlinkUtility.IsHyperlink(text))
{
string url = RemoveCommand(text, Commands.LINK);
message = new HyperlinkChatMessage(url);
}
else if (MatchesCommand(text, Commands.VIDEOURL))
{
string url = RemoveCommand(text, Commands.VIDEOURL);
if (url.Contains("https://"))
{
url = url.Replace("https://", "http://");
}
message = new VideoUrlChatMessage {
VideoUrl = url
};
}
else if (MatchesCommand(text, Commands.WHITEBOARD) || text == "/" + Commands.WHITEBOARD)
{
if (text == "/" + Commands.WHITEBOARD)
{
text += " ";
}
string url = RemoveCommand(text, Commands.WHITEBOARD);
message = new WhiteboardChatMessage {
ImageUrl = url
};
}
else
{
message = new NormalChatUserMessage {
Text = text
};
}
message.ToUsers = toUsers;
message.FromUser = fromUser;
message.Tags = tags;
return(message);
}
public static void DownloadMetadata(this HyperlinkChatMessage message)
{
WebResponse response = null;
StreamReader reader = null;
string result = string.Empty;
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(message.Url);
request.Method = "GET";
response = request.GetResponse();
reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = reader.ReadToEnd();
bool hasMetaData = false;
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(result);
var imageNode = doc.DocumentNode.SelectSingleNode("//meta[@property='og:image']");
if (imageNode != null)
{
message.ImageUrl = imageNode.Attributes["content"].Value;
}
var siteName = doc.DocumentNode.SelectSingleNode("//meta[@property='og:site_name']");
if (siteName != null)
{
message.SiteName = HttpUtility.HtmlDecode(siteName.Attributes["content"].Value.ToUpper());
}
var title = doc.DocumentNode.SelectSingleNode("//meta[@property='og:title']");
if (title != null)
{
message.Title = HttpUtility.HtmlDecode(title.Attributes["content"].Value);
hasMetaData = true;
}
var description = doc.DocumentNode.SelectSingleNode("//meta[@property='og:description']");
if (description != null)
{
message.Description = HttpUtility.HtmlDecode(description.Attributes["content"].Value);
}
else
{
message.Description = "(No description)";
}
message.HasMetaData = hasMetaData;
}
catch
{
}
finally
{
if (reader != null)
{
reader.Close();
}
if (response != null)
{
response.Close();
}
}
}
