CoffeeBot - Python script for RaspberryPi (http://www.webascender.com/Blog/ID/706/CoffeeBot--Fun-Coffee-Brewing-Notifications-With-RaspberryPi)

CoffeeBot.py

#!/usr/bin/env python3
# Written for Python 3.2.3

# sudo apt-get update
# sudo apt-get upgrade
# sudo apt-get install python3-picamera
# sudo apt-get install python3-pip
# sudo pip3 install readchar
# sudo pip3 install slacker

import time
import readchar
import pprint
import picamera
from slacker import Slacker

VERSION = 0.1
SLACK_TOKEN = "API_TOKEN" # Replace with your Slack API token - https://api.slack.com/web
SLACK_CHANNEL_ID = "CHANNEL_ID" # Replace with your Slack channel ID - https://api.slack.com/methods/channels.list/test
BREW_TIME_SECONDS = (11 * 60) # should be adjusted based on your coffee-maker
CAMERA_VFLIP = True # our PiCamera is mounted upside-down
CAMERA_HFLIP = True
PROMPT = ("-" * 50) + "\nPress \'b\' to start brewing, any other key to exit\n"
ASCII_LOGO = """
   _____       __  __            ____        _
  / ____|     / _|/ _|          |  _ \      | |
 | |     ___ | |_| |_ ___  ___  | |_) | ___ | |_
 | |    / _ \|  _|  _/ _ \/ _ \ |  _ < / _ \| __|
 | |___| (_) | | | ||  __/  __/ | |_) | (_) | |_
  \_____\___/|_| |_| \___|\___| |____/ \___/ \__|
"""

slack = Slacker(SLACK_TOKEN)

def print_slack_channels():
	print("Your current Slack channels:")
	response = slack.channels.list()
	for channel in response.body["channels"]:
		print("\t{0:<30} (ID: {1})".format(channel["name"], channel["id"]))
	print("")

def start_brewing():
	print(("*" * 50) + "\n STARTING A BREW \n" + ("*" * 50))

	# Post a text-only message to Slack
	print("\t[Slack] posting message")
	slack.chat.post_message(SLACK_CHANNEL_ID, ':coffee: brewing... :clock4: ')

	# Take a photo of the coffee label
	print('\t[PiCamera] taking a photo')
	photo_filename = 'coffee-label.jpg'
	photo_taken = False
	with picamera.PiCamera() as camera:
		camera.vflip = CAMERA_VFLIP
		camera.hflip = CAMERA_HFLIP
		camera.resolution = (640, 480)
		#camera.resolution = (320, 240)
		camera.capture(photo_filename)
		photo_taken = True

	if photo_taken:
		# Upload photo to Slack
		print('\t[Slack] uploading photo')
		slack.files.upload(photo_filename, title='now percolating...', initial_comment='', channels=[SLACK_CHANNEL_ID])
	else:
		print('\t[PiCamera] FAILED TO TAKE PHOTO')

	print('Waiting for coffee maker to finish brewing...')
	time.sleep(BREW_TIME_SECONDS)
	end_brewing()

def end_brewing():
	print('Brew Complete!')
	slack.chat.post_message(SLACK_CHANNEL_ID, ':coffee: READY!')


print(ASCII_LOGO)
print("CoffeeBot v{0} at your service!\n\nPush the 'button' to post a message to slack and upload a photo of your bag of coffee.".format(VERSION))
print("")
print_slack_channels()
print("Using Slack Channel: {0}".format(SLACK_CHANNEL_ID))
print("Brew Time: {0} minutes".format(BREW_TIME_SECONDS / 60.0))

while True:
	print(PROMPT)
	c = readchar.readchar().lower()
	if (c == 'b'):
		start_brewing()
	else:
		print('You entered: ' + c)
		print('Exiting...')
		break