// Unlike HashSet, Dictionary throws an exception if a key exists. This avoids the exception
// and updates the UserMode if necessary.
public void AddChannel(ChannelData d, UserMode? m = null)
{
if (channels.ContainsKey(d)) {
if (m.HasValue) channels[d] = m.Value;
} else {
channels.Add(d, m.GetValueOrDefault(UserMode.None));
}
}
public void DropChannel(ChannelData c)
{
HashSet<UserData> single = new HashSet<UserData>();
foreach (UserData u in c.users) {
if (u.channels.Count == 1) single.Add(u);
u.channels.Remove(c);
}
_users.RemoveWhere(u => single.Contains(u));
_channels.Remove(c);
}
internal Channel(ChannelData cd)
{
_name = cd.name;
_key = cd.channel_key;
_topic = cd.topic;
_topicsetter = cd.topic_setter;
_topicsettime = cd.topic_settime;
_isIncomplete = cd.incomplete;
_modes = new HashSet<char>();
foreach (char mode in cd.modes) {
_modes.Add(mode);
}
_users = new Dictionary<string, UserMode>();
foreach (UserData u in cd.users) {
_users.Add(u.nick, u.channels[cd]);
}
}
public void Join(ChannelData c, UserData u)
{
c.users.Add(u);
u.AddChannel(c);
_channels.Add(c);
_users.Add(u);
}
public void UnsetUserMode(ChannelData c, UserData u, UserMode um)
{
if (u.channels.ContainsKey(c)) {
u.channels[c] &= ~um;
}
}
public void Unjoin(ChannelData c, UserData u)
{
c.users.Remove(u);
u.channels.Remove(c);
if (u.channels.Count == 0) _users.Remove(u);
}