# button setup (connect to 3.3V and GPIO Pin 16)
import RPi.GPIO as GPIO # GPIO pins
import time
import os # library to use bash commands

def preview(final_module):

    while True: # Run forever
        GPIO.setmode(GPIO.BOARD) #Use the physical GPIO number
        GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) #Change pin if necessary
        GPIO.setwarnings(False) #Ignore warnings

        if GPIO.input(16) == GPIO.HIGH:
            time.sleep(1)
#            print(final_module)
            os.system("gv -fullscreen " + final_module + ".ps")
            GPIO.cleanup() #GPIO clean up
        else:
            break


# problems:
# interrupts read_values.py
# does not refresh



#import os # library to use bash commands
#import keyboard
#import time
#import mouse

#def preview(final_module):
#        os.system("gv -fullscreen " + final_module + ".ps")
#        while True:
#            mouse.move('500', '500')
#            keyboard.send(".")
#            sleep(3)

#preview("test-preview")