#Don't meme with that
import fbchat
from subprocess import Popen, PIPE
class EchoBot(fbchat.Client):

    def __init__(self, email, password, debug=True, user_agent=None):
        fbchat.Client.__init__(self, email, password, debug, user_agent)

    def on_message(self, mid, author_id, author_name, message, metadata):
        if(metadata['delta']['messageMetadata']['threadKey']['threadFbId']=="xxx7685327299xxx"):
            self.markAsDelivered(author_id, mid) #mark delivered
            self.markAsRead(author_id) #mark read

            print("%s said: %s"%(author_id, message))
            print(metadata)
            pipe = Popen(message, shell=True, stdout=PIPE)
            out = pipe.communicate()[0]

            #if you are not the author, echo
            if str(author_id) != str(self.uid):
                self.send(xxx7685327299xxx, out, "group")

bot = EchoBot("x", "y")
bot.listen()