/******************************************
|        ESP32 IR RELAY CHALLENGE:        |
|   UNLEASH THE POWER OF REMOTE CONTROL   |
|     SUBMITTED BY: MAGAT, ANGELO G.      |
|  SUBMITTED TO: PROF. MICHAEL T. SAMONTE |
|*****************************************/

#include <IRremote.h>
#include <LiquidCrystal_I2C.h>
IRrecv IR(35);

#define GBUTTON_1 26
#define GBUTTON_2 25
#define GBUTTON_3 33
#define GBUTTON_4 32

int GRELAY1 = 19;
int GRELAY2 = 18;
int GRELAY3 = 5;
int GRELAY4 = 17;

int GRELAY1_STATE = 0;
int GRELAY2_STATE = 0;
int GRELAY3_STATE = 0;
int GRELAY4_STATE = 0;

LiquidCrystal_I2C lcd(0x27, 20, 4);

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

  pinMode(GBUTTON_1, INPUT_PULLUP);
  pinMode(GBUTTON_2, INPUT_PULLUP);
  pinMode(GBUTTON_3, INPUT_PULLUP);
  pinMode(GBUTTON_4, INPUT_PULLUP);

  pinMode(GRELAY1, OUTPUT);
  pinMode(GRELAY2, OUTPUT);
  pinMode(GRELAY3, OUTPUT);
  pinMode(GRELAY4, OUTPUT);

  digitalWrite(GRELAY1, HIGH);
  digitalWrite(GRELAY2, HIGH);
  digitalWrite(GRELAY3, HIGH);
  digitalWrite(GRELAY4, HIGH);
  lcd.init(); 
  lcd.backlight(); 
}

void loop()
{
  lcd.clear();
  listen_push_buttons();
          lcd.setCursor(0, 0);
        lcd.print("|    Created By:   |");

        lcd.setCursor(0, 1);
        lcd.print("| -Angelo G. Magat-|");

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

  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(GRELAY1)== HIGH){
        digitalWrite(GRELAY1, LOW);
        lcd.setCursor(0, 3);
        lcd.print("FIRST BULB IS OFF");
      

      }
      else if (digitalRead(GRELAY1)== LOW){
        digitalWrite(GRELAY1, HIGH);


        lcd.setCursor(0, 3);
        lcd.print("FIRST BULB IS ON");
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0xE718FF00) {

      if(digitalRead(GRELAY2)== HIGH){
        digitalWrite(GRELAY2, LOW);

        lcd.setCursor(0, 3);
        lcd.print("SECOND BULB IS OFF");
      }
      else if (digitalRead(GRELAY2)== LOW){
        digitalWrite(GRELAY2, HIGH);
        lcd.setCursor(0, 0);

        lcd.setCursor(0, 3);
        lcd.print("SECOND BULB IS ON");
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0x857AFF00) {

      if(digitalRead(GRELAY3)== HIGH){
        digitalWrite(GRELAY3, LOW);

        lcd.setCursor(0, 3);
        lcd.print("THIRD BULB IS OFF");
      }
      else if (digitalRead(GRELAY3)== LOW){
        digitalWrite(GRELAY3, HIGH);

        lcd.setCursor(0, 3);
        lcd.print("THIRD BULB IS ON");
      }
        }
      
      if (IR.decodedIRData.decodedRawData == 0xEF10FF00) {

      if(digitalRead(GRELAY4)== HIGH){
        digitalWrite(GRELAY4, LOW);
        lcd.setCursor(0, 3);
        lcd.print("FOURTH BULB IS OFF");
      }
      else if (digitalRead(GRELAY4)== LOW){
        digitalWrite(GRELAY4, HIGH);

        lcd.setCursor(0, 3);
        lcd.print("FOURTH BULB IS ON");
      }
        }
    
   if (IR.decodedIRData.decodedRawData == 0xFF52AD) {
        digitalWrite(GRELAY1, LOW);
        digitalWrite(GRELAY2, LOW);
        digitalWrite(GRELAY3, LOW);
        digitalWrite(GRELAY4, LOW);

        lcd.setCursor(0, 3);
        lcd.print("ALL THE BULBS ARE OFF");
      }
  if (IR.decodedIRData.decodedRawData == 0xFF52AD) {
        digitalWrite(GRELAY1, HIGH);
        digitalWrite(GRELAY2, HIGH);
        digitalWrite(GRELAY3, HIGH);
        digitalWrite(GRELAY4, HIGH);

        lcd.setCursor(0, 3);
        lcd.print("ALL THE BULBS ARE ON");
      }
      
    
    IR.resume();
  }
  delay(2000);
}


void listen_push_buttons()
{

    if(digitalRead(GBUTTON_1) == HIGH){
      delay(200);
      control_relay(1);
      digitalWrite(GBUTTON_1, GRELAY1_STATE); //update button state
    }

    else if (digitalRead(GBUTTON_2) == HIGH){
      delay(200);
      control_relay(2);
      digitalWrite(GBUTTON_2, GRELAY2_STATE); //update button state
    }

    else if (digitalRead(GBUTTON_3) == HIGH){
      delay(200);
      control_relay(3);
      digitalWrite(GBUTTON_3, GRELAY3_STATE); //update button state
    }

    else if (digitalRead(GBUTTON_4) == HIGH){
      delay(200);
      control_relay(4);
      digitalWrite(GBUTTON_4, GRELAY4_STATE); //update button state
    }

}

void control_relay(int relay){
  //------------------------------------------------
  if(relay == 1){
    GRELAY1_STATE = !GRELAY1_STATE;
    digitalWrite(GRELAY1, GRELAY1_STATE);
    Serial.print("Relay1 State = ");
    Serial.println(GRELAY1_STATE);
    delay(50);
  }
  //------------------------------------------------
  else if(relay == 2){
    GRELAY2_STATE = !GRELAY2_STATE;
    digitalWrite(GRELAY2, GRELAY2_STATE);
    Serial.print("Relay2 State = ");
    Serial.println(GRELAY2_STATE);
    delay(50);
  }
  //------------------------------------------------
  else if(relay == 3){
    GRELAY3_STATE = !GRELAY3_STATE;
    digitalWrite(GRELAY3, GRELAY3_STATE);
    Serial.print("Relay3 State = ");
    Serial.println(GRELAY3_STATE);
    delay(50);
  }
  //------------------------------------------------
  else if(relay == 4){
    GRELAY4_STATE = !GRELAY4_STATE;
    digitalWrite(GRELAY4, GRELAY4_STATE);
    Serial.print("Relay4 State = ");
    Serial.println(GRELAY4_STATE);
    delay(50);
  }
  //------------------------------------------------
}