#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define BUZZER_PIN 8
#define LED_PIN 13 // Example pin for the LED

// Melody of "Happy Birthday"
int melody[] = {
  262, 262, 294, 262, 349, 330,
  262, 262, 294, 262, 392, 349,
  262, 262, 523, 440, 349, 330, 294,
  466, 466, 440, 349, 392, 349
};

// Note durations: 4 = quarter note, 8 = eighth note, etc.
int noteDurations[] = {
  5, 5, 5, 5, 5, 3,
  5, 5, 5, 5, 5, 3,
  5, 5, 5, 5, 5, 5, 3,
  5, 5, 5, 5, 5, 3
};

void setup() {
  // Initialize the display
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  // Clear the buffer
  display.clearDisplay();
  
  // Set up the buzzer pin
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // Display "Happy Birthday" followed by a heart on the SSD1306 display
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.clearDisplay();
  display.setCursor(22, 10); // Center the text
  display.println("Happy Birthday");
  display.setTextSize(2);
  display.setCursor(45,40); // Center the heart
  display.println("<3"); // Heart symbol
  display.display();
  
  // Play the "Happy Birthday" melody
  for (int i = 0; i < sizeof(melody) / sizeof(melody[0]); i++) {
    int noteDuration = 1000 / noteDurations[i];
    tone(BUZZER_PIN, melody[i], noteDuration);
    
    // Blink the LED
    digitalWrite(LED_PIN, HIGH); // Turn on the LED
    delay(noteDuration * 0.9); // Adjust the blinking duration if needed
    digitalWrite(LED_PIN, LOW); // Turn off the LED

    int pauseBetweenNotes = noteDuration * 1.30; // Adjust the tempo
    delay(pauseBetweenNotes);

    noTone(BUZZER_PIN);
    delay(50); // Add a little delay before the next note
  }

  // Clear the display after playing the melody
  display.clearDisplay();
  display.display();
  
  // Wait before playing again
  delay(0000); // 5 seconds delay before playing again
}