/************************************ 
TITLE:
SUBMITTED BY: ALVARO JR. DANILO E..
SUBMITTED TO: PROF. MICHAEL T. SAMONTE
************************************/


#include <IRremote.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,4);

IRrecv IR(2);
int ledPin = 19;
int ledPin1 = 18;
int ledPin2 = 5;
int ledPin3 = 17;

String led_status = "LOW";
String led1_status = "LOW";
String led2_status = "LOW";
String led3_status = "LOW";

#define BUTTON1_PIN 13 // pin for Button 1
#define BUTTON2_PIN 12 // pin for Button 2
#define BUTTON3_PIN 14 // pin for Button 3
#define BUTTON4_PIN 27 // pin for Button 4

void setup() {
  IR.enableIRIn();
  lcd.init();
  lcd.backlight();

  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);  // Set the LED pin as OUTPUT

  digitalWrite(ledPin, LOW);
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);

  pinMode(BUTTON1_PIN, INPUT_PULLUP);
  pinMode(BUTTON2_PIN, INPUT_PULLUP);
  pinMode(BUTTON3_PIN, INPUT_PULLUP);
  pinMode(BUTTON4_PIN, INPUT_PULLUP);
}

void loop() {
  static boolean ledStates[] = {false, false, false, false};
  if (IR.decode()) {
    Serial.println(IR.decodedIRData.decodedRawData, HEX);
    // Use the correct IR codes from your remote control
    if (IR.decodedIRData.decodedRawData == 0xCF30FF00) {

      if(digitalRead(ledPin)== HIGH){
        digitalWrite(ledPin, LOW);
        lcd.setCursor(8,0);
        lcd.print(" ");
        led_status = "LOW";
        ledStates[0] = HIGH;
      }
      else if (digitalRead(ledPin)== LOW){
        digitalWrite(ledPin, HIGH);
        led_status = "HIGH";
        ledStates[0] = LOW;
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0xE718FF00) {

      if(digitalRead(ledPin1)== HIGH){
        digitalWrite(ledPin1, LOW);
        lcd.setCursor(8,1);
        lcd.print(" ");
        
        led1_status = "LOW";
        ledStates[1]=HIGH;
        
      }
      else if (digitalRead(ledPin1)== LOW){
        digitalWrite(ledPin1, HIGH);
        led1_status = "HIGH";
        ledStates[1] = LOW;
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0x857AFF00) {

      if(digitalRead(ledPin2)== HIGH){
        digitalWrite(ledPin2, LOW);
        lcd.setCursor(8,2);
        lcd.print(" ");
        led2_status = "LOW";
        ledStates[2] = HIGH;
      }
      else if (digitalRead(ledPin2)== LOW){
        digitalWrite(ledPin2, HIGH);
        led2_status = "HIGH";
        ledStates[2] = LOW;
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0xB54AFF00) {

      if(digitalRead(ledPin3)== HIGH){
        digitalWrite(ledPin3, LOW);
        lcd.setCursor(8,3);
        lcd.print(" ");
        led3_status = "LOW";
        ledStates[3] = HIGH;
      }
      else if (digitalRead(ledPin3)== LOW){
        digitalWrite(ledPin3, HIGH);
        led3_status = "HIGH";
        ledStates[3] = LOW;
      }
        }
    
   updateButtonState(BUTTON1_PIN, ledStates[0], ledPin);
    updateButtonState(BUTTON2_PIN, ledStates[1], ledPin1);
    updateButtonState(BUTTON3_PIN, ledStates[2], ledPin2);
    updateButtonState(BUTTON4_PIN, ledStates[3], ledPin3);
    IR.resume();
  }

  lcd.setCursor(0,0);
  lcd.print("LED1:");
  lcd.print(led_status);
  
  lcd.setCursor(0,1);
  lcd.print("LED2:");
  lcd.print(led1_status);

  lcd.setCursor(0,2);
  lcd.print("LED3:");
  lcd.print(led2_status);

  lcd.setCursor(0,3);
  lcd.print("LED4:");
  lcd.print(led3_status);

  lcd.setCursor(10,0);
  lcd.print("CREATED BY:");

  lcd.setCursor(10,1);
  lcd.print("DANILO");

  lcd.setCursor(10,2);
  lcd.print("ALVARO");
}
void updateButtonState(int buttonPin, boolean &ledState, int relayPin) {
  if (digitalRead(buttonPin) == LOW) {
    ledState = !ledState;
    digitalWrite(relayPin, ledState ? HIGH : LOW);
    delay(250); // Button debounce delay
  }
}