#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID "TMPL6fA2CUsBO"
#define BLYNK_TEMPLATE_NAME "ESP32 RELAY4"
#define BLYNK_AUTH_TOKEN "e-Odrh1MYV2AKRX6Fb2ojF6rj2YgliOO"

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

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

#define led1 23
#define led2 22
#define led3 21
#define led4 19

int a, b, c, d;

BLYNK_WRITE(V0)
{
  a = param.asInt();
  digitalWrite(led1, a);
  if (a == 1) {
    Blynk.virtualWrite(V4, 1);
  } else {
    Blynk.virtualWrite(V4, 0);
  }
  updateLabel();
}

BLYNK_WRITE(V1)
{
  b = param.asInt();
  digitalWrite(led2, b);
  if (b == 1) {
    Blynk.virtualWrite(V5, 1);
  } else {
    Blynk.virtualWrite(V5, 0);
  }
  updateLabel();
}

BLYNK_WRITE(V2)
{
  c = param.asInt();
  digitalWrite(led3, c);
  if (c == 1) {
    Blynk.virtualWrite(V6, 1);
  } else {
    Blynk.virtualWrite(V6, 0);
  }
  updateLabel();
}

BLYNK_WRITE(V3)
{
  d = param.asInt();
  digitalWrite(led4, d);
  if (d == 1) {
    Blynk.virtualWrite(V7, 1);
  } else {
    Blynk.virtualWrite(V7, 0);
  }
  updateLabel();
}

BLYNK_WRITE(V9)
{
  int allRelaysState = param.asInt();
  digitalWrite(led1, allRelaysState);
  digitalWrite(led2, allRelaysState);
  digitalWrite(led3, allRelaysState);
  digitalWrite(led4, allRelaysState);
  
  String labelInfo = "All Relays: " + String(allRelaysState == 1 ? "ON" : "OFF");
  Blynk.virtualWrite(V8, labelInfo);
}

void updateLabel() {
  String labelInfo = "Relay Status:\n";
  labelInfo += "Relay 1: " + String(a == 1 ? "ON" : "OFF") + "\n";
  labelInfo += "Relay 2: " + String(b == 1 ? "ON" : "OFF") + "\n";
  labelInfo += "Relay 3: " + String(c == 1 ? "ON" : "OFF") + "\n";
  labelInfo += "Relay 4: " + String(d == 1 ? "ON" : "OFF");
  
  Blynk.virtualWrite(V8, labelInfo);
}

void setup() {
  pinMode(led1, OUTPUT);  
  pinMode(led2, OUTPUT); 
  pinMode(led3, OUTPUT); 
  pinMode(led4, OUTPUT);  
  Blynk.begin(auth, ssid, pass);
}

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