#!/bin/python
# Simple script for shutting down the raspberry Pi at the press of a button.
# by Inderpreet Singh

import RPi.GPIO as GPIO
import time
import os

# Use the Broadcom SOC Pin numbers
# Setup the Pin with Internal pullups enabled and PIN in reading mode.
GPIO.setmode(GPIO.BCM)
GPIO.setup(26, GPIO.IN, pull_up_down = GPIO.PUD_UP)

# Our function on what to do when the button is pressed
def Shutdown():
    os.system("sudo shutdown -h now")

lasttime = time.time()
laststate = 1
# Add our function to execute when the button pressed event happens
while 1:
    if laststate != GPIO.input(26):
        laststate = GPIO.input(26)
        lasttime = time.time()    
    if laststate == 0 and lasttime+1< time.time():
        Shutdown()
    time.sleep(0.05)