private void HandleUserData(string sender, string[] content, string data)
{
var username = sender.Substring(0, sender.IndexOf('!'));
if (!_cachedUsers.TryGetValue(username, out var user))
{
user = new User(this)
{
Username = username
};
_cachedUsers.TryAdd(username, user);
}
switch (content[0])
{
case "JOIN":
{
if (!_cachedChannels.TryGetValue(content[1], out var channel))
{
channel = new Channel(this)
{
Name = content[1]
};
_cachedChannels.TryAdd(content[1], channel);
Send($"MODE {channel.Name}");
Send($"NAMES {channel.Name}");
Send($"MODE {channel.Name} +b");
}
var channelUser = new ChannelUser(this, user, channel);
if (channel._users.All(x => x != user))
{
channel._users.Add(channelUser);
}
if (user._channels.All(x => x != channel))
{
user._channels.Add(channel);
}
UserJoined?.Invoke(new UserJoinedEventArgs
{
Client = this,
CurrentUser = CurrentUser,
Channel = channel,
User = channelUser
});
return;
}
case "PART":
{
var channelName = content[1];
if (channelName.StartsWith(':'))
{
channelName = channelName.Substring(1);
}
if (!_cachedChannels.TryGetValue(channelName, out var channel))
{
channel = new Channel(this)
{
Name = channelName
};
_cachedChannels.TryAdd(channelName, channel);
}
if (user._channels.Any(x => x == channel))
{
user._channels.Remove(channel);
}
if (channel._users.Any(x => x == user))
{
channel._users.RemoveAll(x => x == user);
}
UserLeft?.Invoke(new UserLeftEventArgs
{
Client = this,
CurrentUser = CurrentUser,
Channel = channel,
User = user,
Reason = content.Length > 2 ? data.Substring(data.IndexOf(':') + 1) : ""
});
return;
}
case "QUIT":
{
_cachedUsers.TryRemove(user.Username, out _);
foreach (var channel in _cachedChannels.Values)
{
channel._users.RemoveAll(x => x == user);
}
var reason = "";
var idof = data.IndexOf(':');
if (idof != -1)
{
reason = data.Substring(idof + 1);
}
UserQuit?.Invoke(new UserQuitEventArgs
{
Client = this,
CurrentUser = CurrentUser,
User = user,
Reason = reason
});
return;
}
case "NICK":
{
_cachedUsers.TryRemove(user.Username, out var oldUser);
user.Username = content[1].Substring(1);
_cachedUsers.TryRemove(user.Username, out _);
_cachedUsers.TryAdd(user.Username, user);
NicknameChanged?.Invoke(new NicknameChangedEventArgs
{
Client = this,
CurrentUser = CurrentUser,
User = user,
OldUsername = oldUser.Username,
NewUsername = user.Username
});
return;
}
case "PRIVMSG":
{
var cnt = data.Substring(1);
var message = cnt.Substring(cnt.IndexOf(':') + 1);
if (!user._channelMessages.TryGetValue(content[1], out var list))
{
list = new List <string> {
message
};
user._channelMessages.TryAdd(content[1], list);
}
else
{
list.Add(message);
}
if (content[1][0] == '#')
{
if (!_cachedChannels.TryGetValue(content[1], out var channel))
{
channel = new Channel(this)
{
Name = content[1]
};
_cachedChannels.TryAdd(content[1], channel);
}
channel._messages.Add((user, message));
MessageReceived?.Invoke(new MessageReceivedEventArgs
{
Client = this,
Channel = channel,
CurrentUser = CurrentUser,
Message = message,
User = channel.Users.FirstOrDefault(x => x == user) ?? user
});
return;
}
MessageReceived?.Invoke(new MessageReceivedEventArgs
{
Client = this,
Channel = null,
CurrentUser = CurrentUser,
Message = message,
User = user
});
return;
}
case "NOTICE":
{
var message = data.Substring(data.IndexOf(':') + 1);
if (!user._channelMessages.TryGetValue(content[1], out var list))
{
list = new List <string> {
message
};
user._channelMessages.TryAdd(content[1], list);
}
else
{
list.Add(message);
}
NoticeReceived?.Invoke(new NoticeReceivedEventArgs
{
Client = this,
CurrentUser = CurrentUser,
Message = message,
User = user
});
return;
}
case "MODE":
{
if (!_cachedChannels.TryGetValue(content[1], out var channel))
{
channel = new Channel(this)
{
Name = content[1]
};
_cachedChannels.TryAdd(content[1], channel);
}
var iofplus = content[2].IndexOf('+');
var iofminus = content[2].IndexOf('-');
var modesPlus = Array.Empty <char>();
var modesMinus = Array.Empty <char>();
if (iofplus != -1)
{
modesPlus = content[2].Substring(iofplus + 1).ToCharArray();
}
if (iofminus != -1)
{
modesMinus = iofplus != -1
? content[2].Substring(iofminus + 1, content[2].Length - iofplus - 1).ToCharArray()
: content[2].Substring(iofminus + 1).ToCharArray();
}
for (var i = 0; i < modesPlus.Length; i++)
{
if (!channel._modes.Contains(modesPlus[i]) && modesPlus[i] != 'b')
{
channel._modes.Add(modesPlus[i]);
}
}
for (var i = 0; i < modesMinus.Length; i++)
{
if (!channel._modes.Contains(modesMinus[i]) && modesMinus[i] != 'b')
{
channel._modes.Add(modesMinus[i]);
}
}
var complexModes = modesMinus.Where(x => _configuration.ComplexChanModes.Any(y => y == x && x != 'l')).ToList();
complexModes.AddRange(modesPlus.Where(x => _configuration.ComplexChanModes.Any(y => y == x)));
var extraArgs = content.Skip(3).ToList();
var modesArgs = new Dictionary <char, (char, string)>();
for (var i = 0; i < complexModes.Count && i < extraArgs.Count; i++)
{
modesArgs.Add(complexModes[i], (modesMinus.Contains(complexModes[i]) ? '-' : '+', extraArgs[i]));
}
foreach (var complexMod in modesArgs)
{
switch (complexMod.Key)
{
case 'b':
if (complexMod.Value.Item1 == '-')
{
channel._banList.RemoveWhere(x => x.Host == complexMod.Value.Item2);
}
else
{
channel._banList.Add(new ChannelBan
{
IssuedBy = user.Username,
Host = complexMod.Value.Item2,
IssuedOn = DateTimeOffset.UtcNow
});
}
break;
case 'l':
channel.Limit = int.Parse(complexMod.Value.Item2);
break;
case 'k':
channel.Key = complexMod.Value.Item1 == '+' ? complexMod.Value.Item2 : "";
break;
}
}
ChannelModeUpdated?.Invoke(new ChannelModesUpdatedEventArgs
{
Client = this,
CurrentUser = CurrentUser,
Channel = channel,
ModesAdded = new ReadOnlyCollection <char>(modesPlus),
ModesRemoved = new ReadOnlyCollection <char>(modesMinus),
ModesArgs = new ReadOnlyDictionary <char, (char, string)>(modesArgs),
User = channel.Users.FirstOrDefault(x => x == user)
});
return;
}
/// <summary>
/// Raises the <see cref="NoticeReceived"/> event.
/// </summary>
/// <param name="e">The <see cref="EventArgs"/> instance holding the event data.</param>
internal void OnNoticeReceived(IrcChannelMessageEventArgs e)
{
NoticeReceived?.Invoke(this, e);
}