from machine import Pin
import dht
import time
import network
import urequests

# --- CONFIGURATION ---
BLYNK_AUTH_TOKEN = "EY2Rl8ZadD_UzxG-C1kzUTMstyTv9Nqz"  # Replace with your Blynk Auth Token
SSID = "Wokwi-GUEST"  # Wi-Fi SSID
PASS = ""  # Wi-Fi password

DHT_PIN = 14      # DHT sensor pin
LED_PIN = 2       # LED pin (built-in LED on ESP32/ESP8266)

# --- SETUP ---
sensor = dht.DHT22(Pin(DHT_PIN))
led = Pin(LED_PIN, Pin.OUT)

# Connect to Wi-Fi
def connect_wifi():
    sta_if = network.WLAN(network.STA_IF)
    print("Connecting to Wi-Fi...")
    sta_if.active(True)
    sta_if.connect(SSID, PASS)
    while not sta_if.isconnected():
        time.sleep(0.5)
    print("Connected! IP:", sta_if.ifconfig()[0])

# Send temperature to Blynk
def send_temperature(temp):
    try:
        urequests.get("https://blr1.blynk.cloud/external/api/update?token={}&V0={}".format(BLYNK_AUTH_TOKEN, temp))
        print("Temperature sent to Blynk: {:.2f} °C".format(temp))
    except Exception as e:
        print("Error sending temperature:", e)

# Check LED switch from Blynk
def check_led():
    try:
        response = urequests.get("https://blr1.blynk.cloud/external/api/get?token={}&V1".format(BLYNK_AUTH_TOKEN))
        state = int(response.text)
        led.value(state)
        # print("LED State:", state)
    except Exception as e:
        print("Error getting LED state:", e)

# --- MAIN ---
connect_wifi()
print("Temperature & LED Control Started...")

while True:
    try:
        sensor.measure()
        temp = sensor.temperature()  # Celsius
        send_temperature(temp)
        check_led()
    except Exception as e:
        print("Error:", e)
    time.sleep(2)  # Update every 2 seconds