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

char auth[] = "KtKF7LTy8lTwn7MvadAQydFyyepfPkn6";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define LED_PIN_1 15
#define LED_PIN_2 18
#define LED_PIN_3 4
#define LED_PIN_4 5
#define RED_LED_PIN 2

int ledPins[] = {LED_PIN_1, LED_PIN_2, LED_PIN_3, LED_PIN_4};
bool ledStates[] = {false, false, false, false};
bool redLedState = false;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);

  for (int i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }
  pinMode(RED_LED_PIN, OUTPUT);
  digitalWrite(RED_LED_PIN, LOW);
}

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

BLYNK_WRITE(V1) {
  int switchState = param.asInt();
  ledStates[0] = switchState;
  checkAllLeds();
  digitalWrite(LED_PIN_1, switchState);
}

BLYNK_WRITE(V2) {
  int switchState = param.asInt();
  ledStates[1] = switchState;
  checkAllLeds();
  digitalWrite(LED_PIN_2, switchState);
}

BLYNK_WRITE(V3) {
  int switchState = param.asInt();
  ledStates[2] = switchState;
  checkAllLeds();
  digitalWrite(LED_PIN_3, switchState);
}

BLYNK_WRITE(V4) {
  int switchState = param.asInt();
  ledStates[3] = switchState;
  checkAllLeds();
  digitalWrite(LED_PIN_4, switchState);
}

void checkAllLeds() {
  for (int i = 0; i < 4; i++) {
    if (!ledStates[i]) {
      redLedState = false;
      digitalWrite(RED_LED_PIN, LOW);
      Blynk.virtualWrite(V5,LOW);
      return;
    }
  }
  redLedState = true;
  digitalWrite(RED_LED_PIN, HIGH);
  Blynk.virtualWrite(V5,HIGH);
}