import RPi.GPIO as GPIO
import time
import Adafruit_DHT

# Assigning pin numbers for each device
motion_sensor_pin = 18
flame_sensor_pin = 21
gas_sensor_pin = 28
water_sensor_pin = 27
pump_pin = 17
buzzer_pin = 6

# Setting up DHT sensor type and pin
dht_sensor = Adafruit_DHT.DHT22
dht_pin = 4

# GPIO setup
GPIO.setmode(GPIO.BCM)
GPIO.setup(motion_sensor_pin, GPIO.IN)
GPIO.setup(flame_sensor_pin, GPIO.IN)
GPIO.setup(gas_sensor_pin, GPIO.IN)
GPIO.setup(water_sensor_pin, GPIO.IN)
GPIO.setup(pump_pin, GPIO.OUT)
GPIO.setup(buzzer_pin, GPIO.OUT)

def read_temperature():
    """Read temperature from DHT sensor"""
    humidity, temperature = Adafruit_DHT.read_retry(dht_sensor, dht_pin)
    if humidity is not None and temperature is not None:
        return temperature
    else:
        return None

def read_motion_sensor():
    """Read motion sensor state"""
    return GPIO.input(motion_sensor_pin)

def read_flame_sensor():
    """Read flame sensor state"""
    return GPIO.input(flame_sensor_pin)

def read_gas_sensor():
    """Read gas sensor state"""
    return GPIO.input(gas_sensor_pin)

def read_water_sensor():
    """Read water sensor state"""
    return GPIO.input(water_sensor_pin)

def activate_pump():
    """Activate the pump"""
    GPIO.output(pump_pin, GPIO.HIGH)

def deactivate_pump():
    """Deactivate the pump"""
    GPIO.output(pump_pin, GPIO.LOW)

def activate_buzzer():
    """Activate the buzzer"""
    GPIO.output(buzzer_pin, GPIO.HIGH)

def deactivate_buzzer():
    """Deactivate the buzzer"""
    GPIO.output(buzzer_pin, GPIO.LOW)

try:
    while True:
        temperature = read_temperature()
        motion_detected = read_motion_sensor()
        flame_detected = read_flame_sensor()
        gas_detected = read_gas_sensor()
        water_detected = read_water_sensor()

        if temperature is not None:
            if temperature >= 50:
                activate_pump()
                print("Over Temperature Detected!")

        if motion_detected:
            print("Motion Detected!")

        if flame_detected:
            activate_pump()
            activate_buzzer()
            print("Fire Detected!")

        if gas_detected:
            activate_pump()
            print("Gas Leakage Detected!")

        if water_detected:
            print("Water Detected!")

        time.sleep(1)

except KeyboardInterrupt:
    print("Exiting...")
    deactivate_pump()
    deactivate_buzzer()
    GPIO.cleanup()