#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0X27,16,2);

#define BUZZER_PIN 23   // Adjust this pin based on your setup
#define BUTTON_PIN 2
const int buzzerPin = 23;
int inpin=2;

const int songLength = 73;
const int songLengthDeckTheHalls = 73;

char notes[] = "cdfda ag cdfdg gf "; // a space represents a rest
char notesDeckTheHalls[]  = "gfedcdecdefdedcoc gfedcdecdefdedcoc defdefgeefgabCbag gfedcdecdefdedcoc ";
//gfedcdecdefdedcoc gfedcdecdefdedcoc
int beats[] = {1,1,1,1,1,1,4,4,2,1,1,1,1,1,1,4,4,2};
int beatsDeckTheHalls[] = {3,1,2,2,2,2,2,2,1,1,1,1,3,1,2,2,3,1,3,1,2,2,2,2,2,2,1,1,1,1,3,1,2,2,3,1,3,1,2,2,3,1,2,2,1,1,2,1,1,2,2,2,3,1,3,1,2,2,2,2,2,2,1,1,1,1,3,1,2,2,3,};
int tempo = 150;

const char *lyrics[] = {
    "Deck the halls",
    "with boughs of holly",
    "Fa-la-la-la-la,",
    "la-la-la-la",
    "Tis the season",
    "to be jolly",
    "Fa-la-la-la-la,",
    "la-la-la-la",
    "Don we now",
    "our gay apparel",
    "Fa-la-la-la-la,",
    "la-la-la-la",
    "Troll the ancient ",
    "Yule-tide carol",
    "Fa-la-la-la-la,",
    "la-la-la-la",
  };
  
    // Add more lyrics as needed
const char delimiter = ';';


void setup() {
  lcd.init();
  lcd.begin(20,4);
  pinMode(buzzerPin, OUTPUT);

  lcd.setCursor(0,0);
  delay(1000);

  pinMode(BUTTON_PIN, INPUT_PULLUP);
    debouncer.attach(BUTTON_PIN);
    debouncer.interval(50); 
}

void loop() {

debouncer.update();

if (debouncer.fell()) {
        displayLyricsAndBuzzer();
    }

lcd.setCursor(0,0);
    lcd.println(
    "Deck the halls" 
    "with boughs of holly"
    "Fa la la la"
    "la la la la");
delay(1000);

  if (digitalRead(inpin)==HIGH)
  {
    play_music();
  }
  
  };
  
  


void play_music()
{

int i, duration;

  for (i = 0; i < songLengthDeckTheHalls; i++) 
  {
    duration = beatsDeckTheHalls[i] * tempo;  
    
    if (notesDeckTheHalls[i] == ' ')           
    {
      delay(duration);            
    }
    else                          
    {
      tone(buzzerPin, frequency(notesDeckTheHalls[i]), duration);
       
      delay(duration);            
      
    }
    delay(tempo/10);              
  }
}

int frequency(char note) 
{  
  int i;
  const int numNotes = 9;  

  char names[] = { 'o','c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
  int frequencies[] = {247,262, 294, 330, 349, 392, 440, 494, 523};
  
  for (i = 0; i < numNotes; i++)  
  {
    if (names[i] == note)         
    {
      return(frequencies[i]);     
    }
  }  
  return(0);
}
//#define NOTE_B3  247