#!/usr/bin/python

# Requireed python modules: 
# * Mechanize
# * BeatifulSoup
# apt-get install python-mechanize python-beautifulsoup beep



from mechanize import Browser
from mechanize import _response
from BeautifulSoup import BeautifulSoup

import time
import sys
import os

savedVal1 = 0

class CheckDevice:

	def __init__(self): #constructor
		self.savedVal1 = 0

	def beep(self):
		os.system("beep -l 200 -r 2")

	def printTime(self):
		os.system("date");

	def checkVars(self):
		br = Browser()
		try:
			br.open("http://t-hoerup.dk/test.html")

			soup = BeautifulSoup( br.response().read() )
		
			rows = soup.findAll('tr')

			for row in rows:
				key = row.contents[1].string
				val = row.contents[3].string
#				print "key ", key
#				print "val ", val

				if (key == "Key1"):
					if (val != self.savedVal1):
						self.beep()
						self.printTime()
						print "Val1 has changed %s -> %s\n" % ( str(self.savedVal1), str(val) )
						self.savedVal1 = val
										


		except:
			print "Error, probably a 404 : ", sys.exc_info()
	
#		print "----------------------------- done-------------------------"




def main():

	cd = CheckDevice()

	#dumb continous main-loop abort with ctrl+c and ignore the error output
	while (1):
		cd.checkVars()
		time.sleep(1) #seconds


#Finally, launch main function
main()