Idea for a BDS protocol to allow private group chats on dAmn.

bds.group.txt

  Ok, so, protocol for making private group chats possible on dAmn.
  
  These messages must happen in a private chat between users and a service bot.
  
  BDS:GROUP:NEW:user1[,user2[,...]]
    
    Sent by clients.
    
    Open a new group chat with the named users.
    When the chat is created it is assigned an ID, and the
    service bot should send an INVITE message to all the named
    users.
  
  BDS:GROUP:INVITE:id,user
  
    Sent by service bots.
    
    This message indicates that `user` has invited someone to join
    the private chat referenced by `id`.
    
    Client should either ask for confirmation or automatically send a
    JOIN command.
  
  BDS:GROUP:ADD:id,user1[,user2[,...]]
    
    Sent by clients.
    
    This should be used to add users to the group chat after the group
    chat has been created.
    Make it so either only the creator can add people, or any member.
    Unsure which.
  
  BDS:GROUP:JOIN:id
  
    Sent by clients.
    
    Client should send this to join the group chat referenced by `id`.
    The service bot should bring the user into the group chat only if they
    have already been invited by someone.
  
  BDS:GROUP:PART:id
    
    Sent by clients.
    
    Client should send this to leave a group chat.
  
  BDS:GROUP:KICK:id,user[,reason]
    
    Sent by clients.
    
    Should be used to remove a user from the chat forcibly.
  
  BDS:GROUP:REMOVED:id,user,reason
  
    Sent by service bots.
    
    Indicates a user has been removed from the group chat.
  
  BDS:GROUP:SEND:id,type,content
    
    Sent by clients.
    
    Send a message of type `type` to everyone in the group chat.
    Upon receiving this, service bots should relay the message to
    other members of the group chat using the following commands.
    
    BDS:GROUP:MSG:id,user,content
    BDS:GROUP:ACTION:id,user,content
  
  BDS:GROUP:CLOSE:id[,reason]
    
    Sent by clients.
    
    Allow the creator to close a group chat.
  
  BDS:GROUP:CLOSED:id[,reason]
    
    Sent by service bots.
    
    Indicates the group chat has been closed.