import machine
import utime
from machine import Pin

# Ausgänge setzen
LED_onboard = machine.Pin(25, machine.Pin.OUT)
LED_RED = machine.Pin(0, machine.Pin.OUT)      # Auslösung getriggert, warte auf Dunkelheit
LED_GREEN = machine.Pin(1, machine.Pin.OUT)    # Betriebsbereit
LED_BLAU = machine.Pin(2, machine.Pin.OUT)     # Ozongenerator läuft / blinkend: Wartezeit
FAN = machine.Pin(16, machine.Pin.OUT)
OZON = machine.Pin(17, machine.Pin.OUT)
LIGHT = machine.Pin(10, machine.Pin.IN, machine.Pin.PULL_UP)
SWITCH = machine.Pin(15, machine.Pin.IN, machine.Pin.PULL_UP)

# alle Ausgänge auf Null setzen
LED_RED.value(0)
LED_GREEN.value(0)
LED_BLAU.value(0)
FAN.value(1)
OZON.value(1)

# Initialize a variable to track switch state
switch_pressed = False

# Initialize a variable to track ozone generator cooldown
ozone_cooldown = 0

while True:
    print("ganz am Anfang")
    if not switch_pressed:
        # Check twilight switch and adjust the green LED accordingly
        if LIGHT.value() == 1:
            # It's dark, so turn on the green LED
            LED_GREEN.value(1)
        else:
            # It's bright, so turn off the green LED
            LED_GREEN.value(0)
        print("Press the switch to start")

    # Wait for the switch on pin 15 to be pressed
    while SWITCH.value() == 1:
        # Continuously check the twilight switch and adjust the green LED
        if LIGHT.value() == 1:
            LED_GREEN.value(1)
        else:
            LED_GREEN.value(0)

    print("Waiting for darkness")
    
    # Prevent the switch from being pressed again while the following tasks run
    switch_pressed = True
    
    # Turn on the Red LED, turn off the Green LED
    LED_RED.value(1)
    LED_GREEN.value(0)

    # Wait until it's dark
    while LIGHT.value() == 1:
        pass

    if ozone_cooldown <= 0:
        # Fan should be activated for 10 seconds
        FAN.value(0)
        utime.sleep(3)  # pre-roll time fan

        # Start the ozone generator 2 seconds after the fans start
        OZON.value(0)
        LED_BLAU.value(1)
        utime.sleep(3)   # ozone time
        OZON.value(1)
        LED_BLAU.value(0)
        utime.sleep(5)   # post-roll time fan
        FAN.value(1)

        # Set the ozone cooldown period to 2 minutes (120 seconds)
        ozone_cooldown = 180  #3minuten

    # All LEDs off
    LED_RED.value(0)
    LED_GREEN.value(0)

    # Allow the switch to be pressed again
    switch_pressed = False

    # Countdown the ozone cooldown and print remaining time
    while ozone_cooldown > 0:
        mins = ozone_cooldown // 60
        secs = ozone_cooldown % 60
        print("Ozone generator cooldown: {:02d}:{:02d}".format(mins, secs))
        LED_RED.value(0)
        utime.sleep(1)
        LED_RED.value(1)
        ozone_cooldown -= 1
# Reset the switch_pressed flag after the ozone cooldown
    switch_pressed = False
    LED_RED.value(0)
    print("Ende erreicht")