import sys
import os
import threading
import time
import OpenOPC



#import for library
from lackey import *
from Tkinter import *



#Variable

firstBarcode = "112345678"
secondcode = "12345678"
#
#OPC Control
#
opc = OpenOPC.client()
#check all avalible OPC server
opcservers= opc.servers()
print opcservers
#check all avalible tag for Kepware OPC server
opc.list()
# open connection to Server
opc.connect('Kepware.KEPServerEX.V6')
#read value from server
print opc['Simulation Examples.Test.RR01']
opc.close()

#
# Watch Dog
class WatchDog(object):
    """ Watch dog example class
    The run() method will be started and it will run in the background
    until the application exits.
    """

    def __init__(self, interval=1):
        """ Constructor
        :type interval: int
        :param interval: Check interval, in seconds
        :   time.sleep(self.interval)
        """
        self.interval = interval

        thread = threading.Thread(target=self.run, args=())
        thread.daemon = True                            # Daemonize thread
        thread.start()                                  # Start the execution

    def run(self):
        #  Method that runs forever
        while True:
             if exists(Pattern("images/logo.png").similar(0.65)):
              print ("Logo is oK")
              opc.connect('Kepware.KEPServerEX.V6')
              print opc['Simulation Examples.Test.RR01']
              opc.close()
              wait (2)
             else:
              print ("EP is Offline")
              wait(3)


# Functions
#
# Main rutine
def main_loop():
 while exists("images/logo.png", 10):
   watch_dog = 0
   click(Pattern("images/product.png").similar(0.95))
   click(Pattern("images/Vrijgeven.png").similar(0.95))
   watch_dog = watch_dog + 1
   print watch_dog
   click("images/Print.png")
   click(Pattern("images/yellow_input.png").exact())
   type(firstBarcode)
   ask_loop()
# end main rutine
# Exit rutine

def exit_program():
 exitmsges = ("Ariana","Thank you for use.")
 print exitmsges
 wait(3)
 exit
#end  Exit rutine
# start window rutine
def ask_loop():
  startmsges = tkMessageBox.askyesno("Ariana","Do you want to start?")
  print startmsges
  answer = startmsges
  return answer
#end start windows rutine
# OPC server status check
def opc_status():
    print opc.list()
    print opc.info()

#
#Program start
# Run Watch Dog and OPC communication on Background
CheckLogo = WatchDog()


# HERE START

startmsges = ask_loop()


#Main Loop
#Start Message

# If you want start or continue then ...
if startmsges == True:

 print "Start"
 main_loop()

# If you want finish
if startmsges == False:
 exit_program()

#GUI Loop