#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char auth[] = "Ekd3Cdd-aTT2wlHBSf4XNXE_wTsfnVT1";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

BlynkTimer timer;

#define relay2 18
#define relay3 19
#define relay4 23

int SW_relay = 0;
bool relay2Status = false;
bool relay3Status = false;
bool relay4Status = false;

BLYNK_WRITE(V0)
{
  int relayState = param.asInt();
  digitalWrite(relay2, relayState);
  relay2Status = relayState;
}

BLYNK_WRITE(V1)
{
  int relayState = param.asInt();
  digitalWrite(relay3, relayState);
  relay3Status = relayState;
}

BLYNK_WRITE(V2)
{
  int relayState = param.asInt();
  digitalWrite(relay4, relayState);
  relay4Status = relayState;
}

void updateLCD() {

  
  LCD.setCursor(0, 2);
  LCD.print(relay2Status ? "ON " : "OFF");
  LCD.setCursor(4, 2 );
  LCD.print(relay3Status ? "ON " : "OFF");
  LCD.setCursor(8, 2);
  LCD.print(relay4Status ? "ON " : "OFF");
}

void setup() {
  Serial.begin(115200);

  LCD.init();
  LCD.backlight();

  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("R1");
  LCD.setCursor(4, 0);
  LCD.print("R2");
  LCD.setCursor(8, 0);
  LCD.print("R3");

  Blynk.begin(auth, ssid, pass);

  timer.setInterval(1000L, updateLCD);  // Update LCD every 1 second
}

void loop() {
  delay(250);
  Blynk.run();
  timer.run();
}