from blynk import Blynk
import time
from machine import Pin, ADC

# consts
RELAY_PIN_NUMBER = 22
LDR_PIN_NUMBER = 32
LUX_THRESHOLD = 500

GAMMA = 0.7
RL10 = 33

ON = 1
OFF = 0

# setup
relay = Pin(RELAY_PIN_NUMBER, Pin.OUT)
photoresistor = ADC(Pin(LDR_PIN_NUMBER))

client = Blynk(
    "MbudBZULsXDgZwD-7-NCpbqtUNj44Chk",
    wifi_ssid="Wokwi-GUEST",
    wifi_password="",
    verbose=True
)

def ldr_to_lux():
    analog_value = photoresistor.read()
    voltage = analog_value / 4096. * 3.3;
    resistance = 2000 * voltage / (1 - voltage / 3.3);
    lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
    return lux

def main():
    
    print("Starting the Lighting Automation Circuit...")

    while True:
        try:
            luminosity = ldr_to_lux()

            if luminosity <= LUX_THRESHOLD:
                relay.value(ON)
                client.publish("ds/Led", str(ON))
            else:
                relay.value(OFF)
                client.publish("ds/Led", str(OFF))
                            
            client.publish("ds/Luminosity", str(luminosity))

        except OSError as e:
            print("Hardware or network operation failure:", e)
        print("*" * 20)
        time.sleep(10)


if __name__ == "__main__":
    main()

#define BLYNK_TEMPLATE_ID "TMPL2qAB1ks-B"
#define BLYNK_TEMPLATE_NAME "IoT Somativa 2"
#define BLYNK_AUTH_TOKEN "MbudBZULsXDgZwD-7-NCpbqtUNj44Chk"