protected override void LinksAction(IChannelMessageEventArgs args, MessageFlags flags, IList <Uri> links)
{
bool postToChannel = false;
if (links.Count == 0)
{
// no links here; never mind
return;
}
// post the regular response?
if (args.Message.StartsWith(LinkCommandPrefix))
{
postToChannel = true;
}
// broadcast to users who have opted in
var optedInNicks = new List <string>();
// who is in the channel?
var channelNicks = ConnectionManager.NicknamesInChannel(args.Channel);
if (channelNicks != null)
{
// what are their registered names? (consider only registered users)
var channelUsers = channelNicks
.Select(nick => new KeyValuePair <string, string>(nick, ConnectionManager.RegisteredNameForNick(nick)))
.Where(n => n.Value != null)
.ToList();
// which users have opted in?
using (var ctx = GetNewContext())
{
foreach (var user in channelUsers)
{
string username = user.Value;
if (ctx.OptedInUsers.Any(u => u.UserName == username))
{
Logger.LogTrace("nick {Nickname} user {Username} is opted in; adding", user.Key, user.Value);
optedInNicks.Add(user.Key);
}
else
{
Logger.LogTrace("nick {Nickname} user {Username} is not opted in");
}
}
}
}
if (!postToChannel && optedInNicks.Count == 0)
{
// nothing to fetch, nothing to post
return;
}
foreach (var linkAndInfo in links.Select(ObtainLinkInfo))
{
if (postToChannel)
{
PostLinkInfoToChannel(linkAndInfo, args.Channel);
}
if (LastBroadcastLink == null || LastBroadcastLink != linkAndInfo.Link)
{
foreach (var nick in optedInNicks)
{
Logger.LogTrace("posting link info to {Nickname}", nick);
PostLinkInfo(linkAndInfo, message => ConnectionManager.SendQueryNotice(nick, message));
}
LastBroadcastLink = linkAndInfo.Link;
}
else
{
Logger.LogDebug(
"not multicasting link info for {AbsoluteURI}; same as the last",
LastBroadcastLink.AbsoluteUri
);
}
}
}