#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int offButton = 16;
const int onButton = 17;
const int ledPin = 5;

int onButtonState = 0;
int offButtonState = 0;

bool ledState = LOW;
bool lastOnButtonState = HIGH;  
bool lastOffButtonState = HIGH;

unsigned long lastDebounceTimeOn = 0;  
unsigned long lastDebounceTimeOff = 0; 
const unsigned long debounceDelay = 10; 

void setup() {
  lcd.init();  
  lcd.backlight();
  
  pinMode(ledPin, OUTPUT);
  pinMode(onButton, INPUT_PULLUP);
  pinMode(offButton, INPUT_PULLUP);    
   
  digitalWrite(ledPin, LOW);     
}

void loop(){
lcd.print("DONE MIDTERM!");
lcd.setCursor(0,0);

int onButtonState = digitalRead(onButton);
int offButtonState = digitalRead(offButton);

if (onButtonState != lastOnButtonState) {
    lastDebounceTimeOn = millis(); 
}

if ((millis() - lastDebounceTimeOn) > debounceDelay) {
  if (onButtonState == LOW) {
    ledState = HIGH;
    digitalWrite(ledPin, ledState); 
    lcd.setCursor(0, 1);
    lcd.print("BY AUBS & GABS.       ");  
  }
}

if (offButtonState != lastOffButtonState) {
    lastDebounceTimeOff = millis();  
}

if ((millis() - lastDebounceTimeOff) > debounceDelay) {
  if (offButtonState == LOW) {
    ledState = LOW;
    digitalWrite(ledPin, ledState); 
    lcd.setCursor(0, 1);
    lcd.print("finally sleepwell.     ");
  }
}

lastOnButtonState = onButtonState;
lastOffButtonState = offButtonState;

}