from machine import Pin
import time

MAX = 15
cars = 16

enter = Pin(33, Pin.IN, Pin.PULL_DOWN)
exit = Pin(32, Pin.IN, Pin.PULL_DOWN)

green = Pin(19, Pin.OUT)
red = Pin(2, Pin.OUT)
yellow = Pin(4, Pin.OUT)
blue = Pin(17, Pin.OUT)

yellow.value(0)
blue.value(0)
green.value(1)
red.value(0)
while True:

    if cars >= MAX:
        green.value(0)
        red.value(1)

    else:
        green.value(1)
        red.value(0)

    if enter.value() == 1:
        if cars < MAX:
            cars += 1
            yellow.value(1)
            blue.value(0)
            print("1 car has entered.")
            print("Cars count:", cars)           
            print("Space left:", MAX - cars)
        else:
            print("Sorry, the garage is currently full. Please wait until a space becomes available.")
        while enter.value():
            time.sleep(0.1)
        yellow.value(0)

    if exit.value() == 1:
        if cars > 0:
            cars -= 1
            blue.value(1)
            yellow.value(0)
            print("1 car has exited.")
            print("Cars count:", cars)
            print("Space left:", MAX - cars)
        else:
            print("No vehicles are in the garage. Exit request ignored.")

        while exit.value():
            time.sleep(0.1)

        blue.value(0)
    time.sleep(0.1)