#include <Arduino.h>
#include <TM1637Display.h> // Sertakan pustaka TM1637

// Tentukan pin GPIO untuk tombol dan komponen
#define DO_PIN 15
#define RE_PIN 2
#define MI_PIN 4
#define FA_PIN 16  // RX2
#define SO_PIN 17  // TX2
#define LA_PIN 5
#define SI_PIN 18
#define DO2_PIN 19
#define BUZZER_PIN 13
#define RECORD_BUTTON_PIN 14
#define LED_PIN 21
#define PLAY_BUTTON_PIN 12

#define TM1637_CLK 26  // Pin CLK untuk TM1637
#define TM1637_DIO 27  // Pin DIO untuk TM1637

int recordedNotes[100]; // Array untuk menyimpan catatan yang direkam
int noteCount = 0;      // Jumlah catatan yang direkam

bool isRecording = false;

// Buat objek TM1637Display
TM1637Display display(TM1637_CLK, TM1637_DIO);

unsigned long playStartTime = 0; // Waktu mulai pemutaran
unsigned long playDuration = 0;  // Durasi pemutaran dalam milidetik

void setup() {
  pinMode(DO_PIN, INPUT_PULLUP);
  pinMode(RE_PIN, INPUT_PULLUP);
  pinMode(MI_PIN, INPUT_PULLUP);
  pinMode(FA_PIN, INPUT_PULLUP);
  pinMode(SO_PIN, INPUT_PULLUP);
  pinMode(LA_PIN, INPUT_PULLUP);
  pinMode(SI_PIN, INPUT_PULLUP);
  pinMode(DO2_PIN, INPUT_PULLUP);
  
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(RECORD_BUTTON_PIN, INPUT_PULLUP);
  pinMode(LED_PIN, OUTPUT);
  pinMode(PLAY_BUTTON_PIN, INPUT_PULLUP);

  // Inisialisasi tampilan TM1637
  display.setBrightness(0x0A); // Atur kecerahan tampilan (sesuaikan sesuai kebutuhan)
  display.showNumberDec(0, false); // Tampilkan "0" awal
}

void loop() {
  // Periksa apakah tombol rekam ditekan
  if (digitalRead(RECORD_BUTTON_PIN) == LOW) {
    isRecording = !isRecording;
    digitalWrite(LED_PIN, isRecording ? HIGH : LOW);
    delay(500); // Debounce
  }

  if (isRecording) {
    recordNotes();
  } else {
    if (digitalRead(PLAY_BUTTON_PIN) == LOW) {
      playStartTime = millis(); // Catat waktu mulai
      playNotes();
      playDuration = millis() - playStartTime; // Hitung durasi
      displayDuration(playDuration);
    }
  }
}

void displayDuration(unsigned long duration) {
  int seconds = duration / 1000;
  display.showNumberDecEx(seconds, 0b01000000, true);
  delay(1000); // Tunda untuk menampilkan durasi sejenak (sesuaikan sesuai kebutuhan)
  display.showNumberDec(0, false); // Hapus tampilan
}

void playNotes() {
  if (digitalRead(PLAY_BUTTON_PIN) == LOW) {
    for (int i = 0; i < noteCount; i++) {
      int note = recordedNotes[i];
      playNote(note);
    }
  }
}

void recordNotes() {
   if (digitalRead(DO_PIN) == LOW) {
    recordAndPlayNote(261.63); // DO
  }
  if (digitalRead(RE_PIN) == LOW) {
    recordAndPlayNote(293.66); // RE
  }
  if (digitalRead(MI_PIN) == LOW) {
    recordAndPlayNote(329.63); // MI
  }
  if (digitalRead(FA_PIN) == LOW) {
    recordAndPlayNote(349.23); // FA
  }
  if (digitalRead(SO_PIN) == LOW) {
    recordAndPlayNote(392.00); // SO
  }
  if (digitalRead(LA_PIN) == LOW) {
    recordAndPlayNote(440.00); // LA
  }
  if (digitalRead(SI_PIN) == LOW) {
    recordAndPlayNote(493.88); // SI
  }
  if (digitalRead(DO2_PIN) == LOW) {
    recordAndPlayNote(523.25); // DO (Oktav 2)
  }
}

void recordAndPlayNote(float frequency) {
  recordedNotes[noteCount] = frequency;
  noteCount++;
  playNote(frequency);
  delay(300); // Sesuaikan durasi sesuai kebutuhan
}

void playNote(float frequency) {
  if (frequency > 0) {
    tone(BUZZER_PIN, frequency);
    delay(500); // Sesuaikan durasi sesuai kebutuhan
    noTone(BUZZER_PIN);
  }
}