from Messages.Messages import IMessage

## A network id message invites another participant to a site
#
## This can be sent in response to a ClientMsg
class NetworkIdMsg(IMessage):
    id = 0xA1
    length = 2
    
    ## Create a network id message
    def __init__(self, arg1 = None):
        if isinstance(arg1, bytes):
            buffer = arg1
            self.network_id = buffer[1]
        else:
            self.network_id = arg1

    ## Serialize the message into the given buffer
    #
    ## @param buffer_ref A reference to the buffer to use. This should be a list with the buffer as its first and only element
    ## @returns the length of the message
    def Serialize(self, buffer_ref):        
        buffer: bytearray = buffer_ref[0]
        buffer[0:NetworkIdMsg.length] = [
            NetworkIdMsg.id,
            self.network_id
        ]
        return NetworkIdMsg.length