import machine
from machine import Pin, ADC
from math import log
import network
import time
import urequests

# LCD Setup
rs = Pin(27, Pin.OUT)
en = Pin(26, Pin.OUT)
d4 = Pin(25, Pin.OUT)
d5 = Pin(33, Pin.OUT)
d6 = Pin(32, Pin.OUT)  # Assuming it's D32
d7 = Pin(34, Pin.OUT)
lcd = LCD(rs, en, d4, d5, d6, d7)

# Motion Sensor Setup
motion_sensor = Pin(18, Pin.IN)

# Built-in LED Setup
led_builtin = Pin(2, Pin.OUT)

# ADC Setup
adc = ADC(Pin(15))  # ADC1, Channel 0 (Pin 15)


def calculate_temperature(ntc_value):
    ntc_resistance = 10000.0 * (1023.0 / ntc_value - 1.0)
    steinhart = ntc_resistance / 10000.0
    steinhart = log(steinhart)
    steinhart /= 3950.0
    steinhart += 1.0 / (25.0 + 273.15)
    kelvin = 1.0 / steinhart
    celsius = kelvin - 273.15
    return celsius


# Firebase configuration
FIREBASE_URL = "https://your-firebase-url.firebaseio.com"
FIREBASE_SECRET = "your-firebase-secret"

def connect_to_wifi():
    print("Connecting to WiFi", end="")
    sta_if = network.WLAN(network.STA_IF)
    sta_if.active(True)
    sta_if.connect('Wokwi-GUEST', '')  # Replace with your WiFi SSID and password
    while not sta_if.isconnected():
        print(".", end="")
        time.sleep(0.1)
    print(" Connected!")

def send_data_to_firebase(data):
    url = "{}/data.json?auth={}".format(FIREBASE_URL, FIREBASE_SECRET)
    headers = {"Content-Type": "application/json"}
    response = urequests.put(url, json=data, headers=headers)
    print("Firebase Response:", response.text)
    response.close()


def main():
    connect_to_wifi()
    baseline_temp = 0
    celsius = 0

    lcd.init()
    lcd.clear()

    while True:
        # Read motion sensor state
        sensor_state = motion_sensor.value()

        # Set threshold temperature to activate LEDs
        baseline_temp = 40

        # Read analog value from NTC thermistor
        ntc_value = adc.read()

        # Calculate temperature
        celsius = calculate_temperature(ntc_value)

        lcd.clear()

        # Check if the motion sensor is triggered
        if sensor_state == 1:
            lcd.set_cursor(0, 0)
            lcd.print("Door: Open    ")
            led_builtin.value(1)  # Turn on the light
        else:
            lcd.set_cursor(0, 0)
            lcd.print("Door: Closed  ")
            led_builtin.value(0)  # Turn off the light

        # Display temperature on LCD
        lcd.set_cursor(0, 1)
        lcd.print("Temp: {:.2f} C".format(celsius))

        # Log temperature
        print("Temperature: {:.2f} C".format(celsius))

        # Control LEDs based on temperature
        if celsius < baseline_temp:
            lcd.set_cursor(0, 1)
            lcd.print("Fan: OFF       ")
        elif baseline_temp <= celsius < 75:
            lcd.set_cursor(0, 1)
            lcd.print("Fan: ON        ")
        else:  # celsius >= 75
            lcd.set_cursor(0, 1)
            lcd.print("Detected Fire  ")

        utime.sleep_ms(1000)  # Add a delay to prevent rapid LCD updates
        # Prepare data to send to Firebase
        firebase_data = {
            "temperature": celsius,
            "motion": "Open" if sensor_state == 1 else "Closed"
        }
        # Send data to Firebase
        send_data_to_firebase(firebase_data)

if __name__ == "__main__":
    main()