#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6DUZTj2j7"
#define BLYNK_TEMPLATE_NAME "Control LED esp32"
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char auth[] = "dyBQB1sUB5Q11wuG1HlUtWTScXV56nrz";
char ssid[] = "Wokwi-GUEST"; 
char pass[] = ""; 

int pinRedLED = 2;
int pinYellowLED = 4;
int pinGreenLED = 5;

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  pinMode(pinRedLED, OUTPUT);
  pinMode(pinYellowLED, OUTPUT);
  pinMode(pinGreenLED, OUTPUT);
  digitalWrite(pinRedLED, LOW);
  digitalWrite(pinYellowLED, LOW);
  digitalWrite(pinGreenLED, LOW);
}

void loop()
{
  Blynk.run();
  delay(50);
}

BLYNK_WRITE(V1)
{
  int ledState = param.asInt();
  if (ledState == 1) {
    digitalWrite(pinRedLED, HIGH);
    digitalWrite(pinYellowLED, LOW);
    digitalWrite(pinGreenLED, LOW);
    Blynk.virtualWrite(V1, 1);
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V3, 0);
  } else {
    digitalWrite(pinRedLED, LOW);
  }
}

BLYNK_WRITE(V2)
{
  int ledState = param.asInt();
  if (ledState == 1) {
    digitalWrite(pinRedLED, LOW);
    digitalWrite(pinYellowLED, HIGH);
    digitalWrite(pinGreenLED, LOW);
    Blynk.virtualWrite(V1, 0);
    Blynk.virtualWrite(V2, 1);
    Blynk.virtualWrite(V3, 0);
  } else {
    digitalWrite(pinYellowLED, LOW);
  }
}

BLYNK_WRITE(V3)
{
  int ledState = param.asInt();
  if (ledState == 1) {
    digitalWrite(pinRedLED, LOW);
    digitalWrite(pinYellowLED, LOW);
    digitalWrite(pinGreenLED, HIGH);
    Blynk.virtualWrite(V1, 0);
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V3, 1);
  } else {
    digitalWrite(pinGreenLED, LOW);
  }
}