# -*- coding: utf-8 -*-
from RPi import GPIO
from datetime import datetime
import os, time
from PIL import Image
 

GPIOPin = 17
FILE_PATH = "/home/pi/img_%s.%s"
 
def button_callback(gpio_number):
    print("Button pressed!")
    datetime_string = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
    filename = FILE_PATH % (datetime_string, "jpg")
    os.system("raspistill -o %s" % filename)
    
    # convert
    image1 = Image.open(filename)
    im1 = image1.convert('RGB')
    pdf_filename = FILE_PATH % (datetime_string, "pdf")
    im1.save(pdf_filename)

    # send to printer
    os.system("lp %s" % pdf_filename)
 
GPIO.setmode(GPIO.BCM)
GPIO.setup(GPIOPin, GPIO.IN, pull_up_down = GPIO.PUD_DOWN)
GPIO.add_event_detect(GPIOPin, GPIO.RISING, callback=button_callback)

try:
    while True:
        time.sleep(0.01)
except:
    GPIO.cleanup()