[Mine] Supporting Gists for Signal bot blogpost

Dockerfile

FROM ubuntu:latest

RUN apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y python3 python3-pip openjdk-18-jre coreutils curl wget libcairo2-dev libgirepository1.0-dev
WORKDIR /tmp
RUN curl -s https://api.github.com/repos/AsamK/signal-cli/releases/latest \
  | grep "browser_download_url.*Linux.tar.gz\"$" \
  | cut -d : -f 2,3 \
  | tr -d \" \
  | grep ".gz$" \
  | wget -qi -
RUN mkdir -p /opt/cli && mkdir -p /opt/bot && tar xvf *.tar.gz -C /opt/cli && mv /opt/cli/signal* /opt/cli/signal
WORKDIR /opt/bot
RUN pip install pydbus PyGObject

receive.py

#!/usr/bin/python3
# (c)2017 mh-g
# (c)2021 jameshi16

def msgRcv (timestamp, source, groupID, message, attachments):
   print ("msgRcv called")
   print (message)
   return

from pydbus import SessionBus
from gi.repository import GLib

bus = SessionBus()
loop = GLib.MainLoop()

signal = bus.get('org.asamk.Signal', '/org/asamk/Signal')

signal.onMessageReceived = msgRcv
loop.run()

script.py

!/usr/bin/python3
# Does 8-ball things

import random

responses = ['It is Certain.', 'It is decidedly so.', 'Without a doubt.', 'Yes definitely.', 'You may rely on it.', 'As I see it, yes.', 'Most likely.', 'Outlook good.', 'Yes.', 'Signs point to yes.', 'Reply hazy, try again.', 'Ask again later.', 'Better not tell you now.', 'Cannot predict now.', 'Concentrate and ask again.', 'Don\'t count on it.', 'My reply is no.', 'My sources say no.', 'Outlook not so good.', 'Very doubtful.']

def msgRcv (timestamp, sender, groupID, message, attachments):
  if len(message) > 0 and message[0] == '/':
      if '8ball' in message[1:]:
        signal.sendGroupMessage('8ball: ' + random.choice(responses), [], groupID)
  return

def syncMsgRcv(timestamp, source, destination, groupID, message, attachments):
  msgRcv(timestamp, source, groupID, message, attachments)
  return

from pydbus import SessionBus
from gi.repository import GLib

bus = SessionBus()
loop = GLib.MainLoop()

signal = bus.get('org.asamk.Signal', '/org/asamk/Signal')

signal.onSyncMessageReceived = syncMsgRcv
signal.onMessageReceived = msgRcv
loop.run()