From 9ec2149726f327766f255c755e1425fb3d94d72e Mon Sep 17 00:00:00 2001
From: Drew Fisher <drew@aerofs.com>
Date: Tue, 18 Mar 2014 20:52:12 -0700
Subject: [PATCH] WIP on making a bitlbee gateway

Summary: I'm just testing phabricator

Test Plan: run some things some time

Reviewers: jl

Reviewed By: jl

Differential Revision: https://phabricator.brohaus.com/D2
---
 imoo/bitlbee.py | 75 +++++++++++++++++++++++++++++++++++++++++++++++++
 imoo/gateway.py | 11 ++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 imoo/bitlbee.py
 create mode 100644 imoo/gateway.py

diff --git a/imoo/bitlbee.py b/imoo/bitlbee.py
new file mode 100644
index 0000000..0b165e3
--- /dev/null
+++ b/imoo/bitlbee.py
@@ -0,0 +1,75 @@
+import gateway, ircclient
+
+class BitlbeeIRCClient(ircclient.IRCClient):
+    """
+    An IRC client that makes some deep assumptions about the things that the server will send back.
+
+    Implemented as a state machine for now.
+    """
+    def __init__(self, host="127.0.0.1", port=6667, tracing=False):
+        super(BitlbeeIRCClient, self).__init__(host, port, tracing)
+        self.state = "DISCONNECTED"
+
+    def transition_state_to(self, new_state):
+        # Add hooks here if you want things to happen on all state transitions arriving at a state
+
+        # Actually transition states.
+        self.state = new_state
+
+    def handle_command(self, prefix, command, params):
+        # Answer pings.
+        if command == b"PING":
+            self.send_command(b"PONG", *params)
+
+        # state machine to wait until we're in the READY state to send messages
+        handler = getattr(self, "handler_{}".format(self.state), None)
+        if handler is not None:
+            handler(prefix, command, params)
+        else:
+            raise NotImplementedError("HEY! you don't seem to have a handler for the {} state".format(self.state))
+
+    def handler_DISCONNECTED(self, prefix, command, params):
+        if command == '001':
+            self.trace("I was welcomed")
+            self.transition_state_to("JOINING")
+
+    def handler_JOINING(self, prefix, command, params):
+        if command == b'JOIN' and "&bitlbee" in params:
+            self.trace("I was joined")
+            self.transition_state_to("DRAINING")
+
+    def handler_DRAINING(self, prefix, command, params):
+        if command == b'PRIVMSG' and "If you already have an account on this server, just use the \x02identify\x02 command to identify yourself." in params[-1]:
+            self.trace("Ready!")
+            self.send_command(b'PRIVMSG', "&bitlbee", "help account")
+            self.transition_state_to("READY")
+
+    def handler_READY(self, prefix, command, params):
+        pass
+
+    def trace(self, message):
+        if self.tracing:
+            print message
+
+class BitlbeeGateway(gateway.Gateway):
+    """
+    A gateway class that will use a connection to bitlbee to connect to the
+    backend chat network.
+
+    Note that this must still be specialized per chat network that bitlbee supports.
+    """
+    def __init__(self, host="127.0.0.1", port="6667"):
+        self._ircclient = IRCClient(host, port)
+        self._ircclient.connect()
+
+    def _send_root_message(self, text):
+        self._ircclient.send_command("PRIVMSG", "&bitlbee", text)
+
+    def _send_chat_message(self, buddy_id, text):
+        pass
+
+if __name__ == "__main__":
+    c = BitlbeeIRCClient(tracing=True)
+    c.connect()
+    import tornado.ioloop
+    tornado.ioloop.IOLoop.instance().start()
diff --git a/imoo/gateway.py b/imoo/gateway.py
new file mode 100644
index 0000000..878af5d
--- /dev/null
+++ b/imoo/gateway.py
@@ -0,0 +1,11 @@
+class Gateway(object):
+    """
+    An abstract class which provides the API to a particular chat gateway.
+
+    No real work has been done yet.
+    """
+    def __init__(self):
+        pass
+
+    def connect_to_backend(self, userid, credential):
+        raise NotImplementedError("Gateway methods must be implemented by a child class")
-- 
2.39.5