#define BLYNK_TEMPLATE_ID           "TMPL6B2m3BXTu"
#define BLYNK_TEMPLATE_NAME         "ESP"
#define BLYNK_AUTH_TOKEN            "NodjCqF3OFIRfwBUaNMXhYZXx9uTitiY"
#define PIN_LDR 32
#define LED 2
#define LED1 4

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

const float GAMMA = 0.7;
const float RL10 = 50;


char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;


void alertLux(float lux){
  if(lux >= 50){
    Serial.println("Terang");
    digitalWrite(LED, LOW);
    digitalWrite(LED1, LOW);
    Blynk.virtualWrite(V2,V3, "Terang");
  } else {
    Serial.println("Gelap");
    digitalWrite(LED, HIGH);
    digitalWrite(LED1, HIGH);
    Blynk.virtualWrite(V2,V3, "Gelap"); 
  } 
  
}

void readLux(){
  int value = analogRead(PIN_LDR);
  float voltage = value * 5 / 4095.0;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10,GAMMA) / resistance, (1/GAMMA));
  Serial.print("lux: ");
  Serial.println(lux);
  Blynk.virtualWrite(V7, lux);
  alertLux(lux);
}
void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  digitalWrite(LED, LOW);
  pinMode(PIN_LDR, INPUT);
  pinMode(LED, OUTPUT);
  pinMode(LED1, OUTPUT);
  
  timer.setInterval(1000L, readLux);
}

void loop()
{
  Blynk.run();
  timer.run();
}