Messages + iTunes Applescript

I think the problem is with nesting of commands for iTunes inside the Messages tell (using terms ...) block.

See if something along these lines helps:

using terms from application "Messages"

on message receivedtheMessage

set iTunesCmd to theMessage

end message received

end using terms from

tell application "iTunes"

if iTunesCmd is "Play" then play

if iTunesCmd is "Pause" then pause

--...

end tell

I did a bit of research AKA googling:

If you're using the Messages app interactively, you need to add another handler:

on active chat message receivedwitheventDescription

--

end active chat message received

The full explanation can be seen here: http://stackoverflow.com/questions/12377572/trying-to-receive-a-message-from-os- x-message-w-applescript

Actually, it seems to go a bit further than the above (but I had not read the whole piece I reference). You need to add all the handlers in the template and then only use the ones that are relevant to you.

on message sent theMessage with eventDescription
    end message sent
    on message received theMessage with eventDescription
    end message received
    on chat room message received with eventDescription
    end chat room message received
    on active chat message received with eventDescription
    end active chat message received
    on addressed message received theMessage from theBuddy for theChat with eventDescription
    end addressed message received
    on received text invitation with eventDescription
    end received text invitation
    on received audio invitation theText from theBuddy for theChat with eventDescription
    end received audio invitation
    on received video invitation theText from theBuddy for theChat with eventDescription
    end received video invitation
    on received local screen sharing invitation from theBuddy for theChat with eventDescription
    end received local screen sharing invitation
    on buddy authorization requested with eventDescription
    end buddy authorization requested
    on addressed chat room message received with eventDescription
    end addressed chat room message received
    on received remote screen sharing invitation with eventDescription
    end received remote screen sharing invitation
    on login finished with eventDescription
    end login finished
    on logout finished with eventDescription
    end logout finished
    on buddy became available with eventDescription
    end buddy became available
    on buddy became unavailable with eventDescription
    end buddy became unavailable
    on received file transfer invitation theFileTransfer with eventDescription
    end received file transfer invitation
    on av chat started with eventDescription
    end av chat started
    on av chat ended with eventDescription
    end av chat ended
    on completed file transfer with eventDescription
    end completed file transfer

Message was edited by: Bernard Harte

Try using just this script as the handler, then build-out from there. (I have taken one of Apple's examples, and used it as a template to process just message received events.) It works for me.

using terms from application "Messages"

on message senttheMessagewitheventDescription

#

end message sent

on message receivedtheMessagewitheventDescription

my messageReceived(theMessage)

end message received

on chat room message receivedwitheventDescription

#

end chat room message received

on active chat message receivedwitheventDescription

#

end active chat message received

on addressed message receivedtheMessagefromtheBuddyfortheChatwitheventDescription

#

end addressed message received

on received text invitationwitheventDescription

#

end received text invitation

on received audio invitationtheTextfromtheBuddyfortheChatwitheventDescription

#

end received audio invitation

on received video invitationtheTextfromtheBuddyfortheChatwitheventDescription

#

end received video invitation

on received local screen sharing invitationfromtheBuddyfortheChatwitheventDescription

#

end received local screen sharing invitation

on buddy authorization requestedwitheventDescription

#

end buddy authorization requested

on addressed chat room message receivedwitheventDescription

#

end addressed chat room message received

on received remote screen sharing invitationwitheventDescription

#

end received remote screen sharing invitation

# The following are unused but need to be defined to avoid an error

on login finishedwitheventDescription

#

end login finished

on logout finishedwitheventDescription

#

end logout finished

on buddy became availablewitheventDescription

#

end buddy became available

on buddy became unavailablewitheventDescription

#

end buddy became unavailable

on received file transfer invitationtheFileTransferwitheventDescription

#

end received file transfer invitation

on av chat startedwitheventDescription

#

end av chat started

on av chat endedwitheventDescription

#

end av chat ended

on completed file transferwitheventDescription

#

end completed file transfer

end using terms from

on messageReceived(theMessage)

tell application "iTunes"

ignoring case

if theMessage is "play" then play

if theMessage is "pause" then pause

end ignoring

end tell

end messageReceived