Ideas for extending triggers to chat events

Triggering.cs

interface ITrigger
{
    void ProcessMessage(Message msg, ref Room rm);
    
    bool HandleChatEvent(EventType type, object EventData);
}

//OR

interface Hatman.Events.IChatEventHandler
{
    /// <summary>Raw data (string) has been received via the WebSocket (as JSON).</summary>
    bool OnDataReceived(string rawData, Room rm);
    /// <summary>A new message has been posted.</summary>
    bool OnMessagePosted(Message msg, Room rm);
    /// <summary>A message has been edited.</summary>
    bool OnMessageEdited(Message msg, Room rm);
    /// <summary>A user has entered the room.</summary>
    bool OnUserEntered(User usr, Room rm);
    /// <summary>A user has left the room.</summary>
    bool OnUserLeft(User usr, Room rm);
    /// <summary>Someone has (un)starred a message.</summary>
    bool OnMessageStarToggled(Message msg, Room rm);
    /// <summary>You have been mentioned (@Username) in a message.</summary>
    bool OnUserMentioned(Message msg, Room rm);
    /// <summary>A message has been deleted.</summary>
    bool OnMessageDeleted(Message msg, Room rm);
    /// <summary>A user's room access level has been changed.</summary>
    bool UserAccessLevelChanged(User usr, Room rm);
    /// <summary>Someone has posted a reply to one of your messages.</summary>
    bool OnMessageReply(Message msg, Room rm);
}

//OR

class SomeTriggerThing
{
  [UserEventHandler(EventType.UserEntered)]
  public bool OnUserEntered(/* Some event data struct */);
}

//OR

interface ITrigger
{
    void ProcessMessage(Message msg, ref Room rm);
    
    void RegisterEvents(EventManager mgr);
    
    void UnregisterEvents(EventManager mgr);
}