flip availablility

Seems presence notifications are not sent to clients that have marked
themselves unavailable. (Testing with google talk.)

This is the death knell for the presence hack, because it has to stay
available, and even the toggle to unavailable and back could cause it to
miss a notification. Still, flipped it so it basically works, for now.

Assistant/Threads/PushNotifier.hs

@@ -43,25 +43,26 @@ pushNotifierThread st dstatus pushnotifier = NamedThread thisThread $ do
 
 		client c jid = runClient server jid (xmppUsername c) (xmppPassword c) $ do
 			void $ bindJID jid
-			void $ putStanza $ emptyPresence PresenceUnavailable
 			s <- getSession
-			_ <- liftIO $ forkIO $ void $ sendnotifications s
-			receivenotifications
+			_ <- liftIO $ forkIO $ void $ runXMPP s $
+				receivenotifications
+			sendnotifications
 			where
 				server = Server
 					(JID Nothing (jidDomain jid) Nothing)
 					(xmppHostname c)
 					(PortNumber $ fromIntegral $ xmppPort c)
 
-		sendnotifications session = runXMPP session $ forever $ do
+		sendnotifications = forever $ do
 			us <- liftIO $ waitPush pushnotifier
 			{- Toggle presence to send the notification. -}
+			putStanza $ emptyPresence PresenceUnavailable
 			putStanza $ (emptyPresence PresenceAvailable)
 				{ presenceID = Just $ encodePushNotification us }
-			putStanza $ emptyPresence PresenceUnavailable
 
 		receivenotifications = forever $ do
 			s <- getStanza
+			liftIO $ print s
 			case s of
 				ReceivedPresence (Presence { presenceType = PresenceAvailable, presenceID = Just t }) ->
 					 maybe noop (liftIO . pull st dstatus)