Cookbook: AIMHarness

Sending and receiving messages over AIM is easy. AIMHarness only deals with four kinds of messages: outgoing IMs, incoming IMs, buddy online notifications, and error notifications. The first kind it receives in its inbox, and the other three are sent out through its outbox.

• To send an instant message to another user, send the command ("message", recipient, text of the message) to its "inbox".
• AIMHarness will send out the following notifications through its "outbox":

		NOTIFICATION                                         EVENT
                ("buddy online", {buddy information})                A buddy comes online
                ("message", sender, message text)                    An instant message arrives for you
                ("error", error message)                             An error occurs during the first stage of login

A simple, one-buddy AIM client using Pygame

def sendTo(recipient, text):
    return ("message", recipient, text)

def outformat(data, buddyname):
    if data[0] == "buddy online" and data[1]["name"] ==  buddyname:
        return "%s is online" % buddyname
    elif data[0] == "message" and data[1] == buddyname:
        return "%s: %s" % (buddyname, data[2])
    elif data[0] == "error":
        ": ".join(data)

def SimpleAIMClient(screenname, password, buddyname):
    Pipeline(Textbox(position=(0, 400)),
             PureTransformer(lambda text: sendTo(buddyname, text)),
             AIMHarness(screenname, password),
             PureTransformer(lambda tup: outformat(tup, buddyname)),
             TextDisplayer()
             ).run()