import time
import network
import BlynkLib
from machine import Pin, ADC
from dht import DHT22
import network


# Wi-Fi credentials
ssid = 'Wokwi-GUEST'
password = ''
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)

# Wait for connection
print("Connecting to Wi-Fi...")
for _ in range(10):  # Wait for up to 10 seconds
    if wlan.isconnected():
        print("Connected successfully!")
        print("Network config:", wlan.ifconfig())  # Print IP address and more
        break
    print("Still connecting...")
    time.sleep(1)

if not wlan.isconnected():
    print("Failed to connect to Wi-Fi. Check your credentials or router settings.")
# Blynk credentials
BLYNK_TEMPLATE_ID = "TMPL5LenGf4Ok"
BLYNK_TEMPLATE_NAME = "Smart Home ESP32"
BLYNK_AUTH_TOKEN = "ZiBJ6yaOyDRxjKycpBz6DQ8nJGrRzQpx"

# Pin definitions
DHT_PIN = 15  # DHT22 sensor
LDR_PIN = 34  # Photoresistor (LDR)
PIR_PIN = 27  # PIR motion sensor
LED1_PIN = 16  # LED 1
LED2_PIN = 17  # LED 2
BUZZER_PIN = 26  # Buzzer

# Initialize Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH_TOKEN)

# Initialize components
dht_sensor = DHT22(Pin(DHT_PIN))
ldr = ADC(Pin(LDR_PIN))
ldr.atten(ADC.ATTN_11DB)  # Set LDR ADC to read full range (0-3.3V)
pir_sensor = Pin(PIR_PIN, Pin.IN)
led1 = Pin(LED1_PIN, Pin.OUT)
led2 = Pin(LED2_PIN, Pin.OUT)
buzzer = Pin(BUZZER_PIN, Pin.OUT)

# Variables for sensor state tracking
last_temperature = -1
last_humidity = -1


# Function to connect to Wi-Fi
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)
    while not wlan.isconnected():
        time.sleep(0.5)
        print(".", end="")
    print("\nWiFi connected!")


# Function to update sensors and send data to Blynk
def update_sensors():
    global last_temperature, last_humidity

    # Read temperature and humidity from DHT22
    try:
        dht_sensor.measure()
        temperature = dht_sensor.temperature()
        humidity = dht_sensor.humidity()

        # Send temperature to Blynk (V0) if it changes
        if temperature != last_temperature:
            blynk.virtual_write(0, temperature)
            print(f"Temperature: {temperature} °C")
            last_temperature = temperature

        # Send humidity to Blynk (V1) if it changes
        if humidity != last_humidity:
            blynk.virtual_write(1, humidity)
            print(f"Humidity: {humidity} %")
            last_humidity = humidity

    except Exception as e:
        print(f"Error reading DHT22: {e}")

    # Simulate LDR and LEDs
    light_level = ldr.read()
    if light_level < 2000:
        led1.value(1)
        led2.value(1)
    else:
        led1.value(0)
        led2.value(0)

    # Simulate PIR and buzzer
    if pir_sensor.value() == 1:  # Motion detected
        print("Motion detected! Buzzer ON")
        buzzer.value(1)
    else:
        buzzer.value(0)


# Main function
def main():
    connect_wifi()
    print("Connected to WiFi and Blynk!")

    while True:
        update_sensors()
        blynk.run()  # Handle Blynk communication
        time.sleep(1)  # Wait 1 second


# Run the main program
if __name__ == "__main__":
    main()