#include <IRremote.h>

#define PIN_RECEIVER 2   // Signal Pin of IR receiver

// Define relay control pins
#define RELAY_1_PIN 2
#define RELAY_2_PIN 4
#define RELAY_3_PIN 15
#define RELAY_4_PIN 18

#define STATUS_LED 13  // Built-in LED on most ESP32 boards

IRrecv receiver(PIN_RECEIVER);

void setup()
{
  // Initialize relay control pins
  pinMode(RELAY_1_PIN, OUTPUT);
  pinMode(RELAY_2_PIN, OUTPUT);
  pinMode(RELAY_3_PIN, OUTPUT);
  pinMode(RELAY_4_PIN, OUTPUT);

  pinMode(STATUS_LED, OUTPUT);

  receiver.enableIRIn(); // Start the receiver
}

void loop()
{
  // Checks received an IR signal
  if (receiver.decode()) {
    translateIR();
    receiver.resume();  // Receive the next value
  }
}

void toggleRelay(int relayPin)
{
  // Toggle the state of the relay
  if (digitalRead(relayPin) == HIGH) {
    digitalWrite(relayPin, LOW);
  } else {
    digitalWrite(relayPin, HIGH);
  }
}

void indicateStatus()
{
  // Blink the built-in LED to indicate the status
  digitalWrite(STATUS_LED, HIGH);
  delay(100);
  digitalWrite(STATUS_LED, LOW);
}

void translateIR()
{
  // Takes command based on IR code received
  switch (receiver.decodedIRData.command) {
    case 48: // Example IR code, replace with your remote's code
      toggleRelay(RELAY_1_PIN);
      indicateStatus();
      break;
    case 24: // Example IR code, replace with your remote's code
      toggleRelay(RELAY_2_PIN);
      indicateStatus();
      break;
    case 122:  // Example IR code, replace with your remote's code
      toggleRelay(RELAY_3_PIN);
      indicateStatus();
      break;
    case 16:   // Example IR code, replace with your remote's code
      toggleRelay(RELAY_4_PIN);
      indicateStatus();
      break;
    // Add more cases for other buttons if needed
  }
}