#include <IRremote.h>
#include <EEPROM.h>
#define IR_RECEIVE_PIN 7
int BUZZ= 8;
const int relay2=12;
const int relay3=11;
const int relay4=10;
const int led=6;
int cmd;

void setup() {
  Serial.begin(9600);
  IrReceiver.begin(IR_RECEIVE_PIN);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);
  pinMode(BUZZ, OUTPUT);
  pinMode(led, OUTPUT);
  //one time initailization for buzzer sound
  digitalWrite(BUZZ, HIGH);
  delay(1000);
  digitalWrite(BUZZ, LOW); 
}

void loop() {
  if (IrReceiver.decode()) {
    delay(200);
    IrReceiver.resume();
    Serial.println(IrReceiver.decodedIRData.command);
    cmd = IrReceiver.decodedIRData.command;
    EEPROM.wrire(cmd,0);
    if(cmd == 48 || cmd == 24 || cmd == 122 ||cmd == 16 || cmd == 104  )
    {
      digitalWrite(BUZZ, HIGH);
      delay(200);
      digitalWrite(BUZZ, LOW);
    }
  }
  static int var = EEPROM.read(0);
  
  
  switch(var)
  {
    case 48:
    digitalWrite(LED_BUILTIN, HIGH);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, LOW);
    digitalWrite(relay4, LOW);
    digitalWrite(led, LOW);
    break;
    case 24:
    digitalWrite(LED_BUILTIN, LOW);
    digitalWrite(relay2, HIGH);
    digitalWrite(relay3, LOW);
    digitalWrite(relay4, LOW);
    digitalWrite(led, LOW);
    break;
    case 122:
    digitalWrite(LED_BUILTIN, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, HIGH);
    digitalWrite(relay4, LOW);
    digitalWrite(led, LOW);
    break;
    case 16:
    digitalWrite(LED_BUILTIN, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, LOW);
    digitalWrite(relay4, HIGH);
    digitalWrite(led, LOW);
    break;
    case 252 :
    digitalWrite(LED_BUILTIN, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, HIGH);
    digitalWrite(relay4, LOW);
    digitalWrite(led, LOW);
    break;
    case 104:
    digitalWrite(led, HIGH);
    digitalWrite(LED_BUILTIN, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, LOW);
    digitalWrite(relay4, LOW);
    break;
    default:
    ;
}
}