foaas.py

import os
import time
import requests
from slackclient import SlackClient

# add bot id and slack bot token
BOT_ID = 
SLACK_BOT_TOKEN = 
# constants
AT_BOT = "<@" + BOT_ID + ">"

VERSION = "version"

# instantiate Slack & Twilio clients
slack_client = SlackClient(SLACK_BOT_TOKEN)

def handle_command(command, channel, user):
    """
        Receives commands directed at the bot and determines if they
        are valid commands. If so, then acts on the commands. If not,
        returns back what it needs for clarification.
    """
    response = "Wat"
    headers={'Accept': 'text/plain'}
    args = command.split();
    if command.startswith(VERSION):
       response = requests.get('http://foaas.com/version', headers=headers).text
    else:
    	if len(args) == 1:
    		response = requests.get('http://foaas.com/' + args[0] + "/" + user, headers=headers).text
		if len(args) == 2:
			response = requests.get('http://foaas.com/' + args[0] + "/" + args[1] + "/" + user, headers=headers).text
		if len(args) == 3:
			response = requests.get('http://foaas.com/' + args[0] + "/" + args[1] + "/" + args[2] + "/" + user, headers=headers).text

    slack_client.api_call("chat.postMessage", channel=channel,
                          text=response, as_user=True)


def parse_slack_output(slack_rtm_output):
    """
        The Slack Real Time Messaging API is an events firehose.
        this parsing function returns None unless a message is
        directed at the Bot, based on its ID.
    """
    output_list = slack_rtm_output
    if output_list and len(output_list) > 0:
        for output in output_list:
            if output and 'text' in output and AT_BOT in output['text']:
                # return text after the @ mention, whitespace removed
                payload = {'token': SLACK_BOT_TOKEN, 'user': output['user']}
                r = requests.get('https://slack.com/api/users.info', params=payload)
                username = r.json()['user']['name']
                return output['text'].split(AT_BOT)[1].strip().lower(), \
                       output['channel'], username
    return None, None, None

if __name__ == "__main__":
    READ_WEBSOCKET_DELAY = 1 # 1 second delay between reading from firehose
    if slack_client.rtm_connect():
        print("StarterBot connected and running!")
        while True:
            command, channel, user = parse_slack_output(slack_client.rtm_read())
            if command and channel and user:
                handle_command(command, channel, user)
            time.sleep(READ_WEBSOCKET_DELAY)
    else:
        print("Connection failed. Invalid Slack token or bot ID?")