import gpiozero
import time
from datetime import datetime

def debug_print(message: str):
    now = datetime.now()
    current_time = now.strftime("%H:%M:%S")
    print('[DEBUG]['+current_time+'] '+message)

def error_print(message: str):
    now = datetime.now()
    current_time = now.strftime("%H:%M:%S")
    print('[ERROR]['+current_time+'] '+message)

def relay_controller(pin: int, state: str):
    if state == "True":
        relay = gpiozero.OutputDevice(pin, active_high=False, initial_value=False)
        relay.on()
        debug_print("Set relay-pin "+str(pin)+" to state True")
    elif state == "False":
        relay = gpiozero.OutputDevice(pin, active_high=False, initial_value=False)
        relay.off()
        debug_print("Set relay-pin "+str(pin)+" to state False")
    else:
        error_print("Unknown state for relay ("+state+")")

while True:
    relay_controller(4, "True")
    time.sleep(2)
    relay_controller(4, "False")
    time.sleep(2)