import network
import time
from machine import Pin  
import BlynkLib


led1 = Pin(3, Pin.OUT)

print("Connecting to WiFi", end="")
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect("NOWIFI5G","sheiksh@123")


# Wait for network connection
wait = 10
while wait > 0:
    if wlan.status() < 0 or wlan.status() >= 3:
        break
    wait -= 1
    print('waiting for connection...')
    time.sleep(1)
 
# Handle connection error
if wlan.status() != 3:
    raise RuntimeError('network connection failed')
else:
    print('connected')
    ip = wlan.ifconfig()[0]
    print('IP: ', ip)
 
# Connect to Blynk
BLYNK_AUTH = 'I67WAieQKB0J7kEtXmjLv5_8wn-EgH1s'
blynk = BlynkLib.Blynk(BLYNK_AUTH)
 
# Track connection state
is_connected = True
last_ping_time = time.time()


@blynk.on("V1")
def v1_write_handler(value):
    print("Value received from V1:", value)
    print("Received value from V1:", value)
    try:
        if int(value[0]) == 1:
            led1.value(1)
            print("Relay ON")
        else:
            led1.value(0)
            print("Relay OFF")
    except Exception as e:
        print("Error processing value:", e)

def check_connection():
    """Ping the Blynk server to verify connectivity."""
    global is_connected, last_ping_time

    current_time = time.time()
    if current_time - last_ping_time > 1:  # Ping every 10 seconds
        try:
            blynk.virtual_write(255, "Ping")  # Send a test write
            print("Connection OK")
            is_connected = True
        except Exception as e:
            print("Connection Error:", e)
            is_connected = False
        finally:
            last_ping_time = current_time


while True:
    try:
        blynk.run()
        check_connection()
    except Exception as e:
        print("Error in Blynk loop:", e)
        is_connected = False
        time.sleep(1)  # Pause briefly before retrying