import machine, time
from machine import Pin, ADC
import dht

# ---------------------
# Pins
# ---------------------
lamp = Pin(15, Pin.OUT)
button = Pin(14, Pin.IN, Pin.PULL_UP)
ldr = ADC(Pin(26))
pir = Pin(13, Pin.IN)
buzzer = Pin(9, Pin.OUT)

# ---------------------
# State
# ---------------------
lamp_state = False

# ---------------------
# Helper functions
# ---------------------
def toggle_lamp():
    global lamp_state
    lamp_state = not lamp_state
    lamp.value(lamp_state)
    print("Lamp is", "ON" if lamp_state else "OFF")

def read_environment():
    light = ldr.read_u16()  # 0-65535
    motion = pir.value()
    print(f"Light: {light}, Motion: {motion}")
    return light, motion

def notify():
    buzzer.value(1)
    time.sleep(0.2)
    buzzer.value(0)

# ---------------------
# Main Loop
# ---------------------
while True:
    # Manual toggle
    if button.value() == 0:
        toggle_lamp()
        time.sleep(0.3)  # debounce
    
    # Automatic light control
    light, motion = read_environment()
    if light < 30000 and motion:   # Dark and someone present
        if not lamp_state:
            lamp.value(1)
            lamp_state = True
            notify()
    else:
        if lamp_state:
            lamp.value(0)
            lamp_state = False
    
    time.sleep(0.5)