/* CARA PENGUNAAN:
    1. tombol START warna hijau (untuk menyalakan mesin cuci)
    2. tombol STOP  warna merah (untuk mematikan mesin cuci)
    3. tombol MENU warna kuning ( untuk setting waktu cuci, delay forward, delay reverse, dan delay off)
    4. tombol TAMBAH warna putih (untuk menambah delay time pada tiap parameter di dalam MENU)
    5. tombol KURANG warna hitam (untuk mengurangi delay time pada tiap parameter di dalam MENU)

CARA SETTING WAKTU PADA MENU:
    1. tekan tombol KUNING untuk masuk MENU.
    2. pilih parameter waktu yang ingin diubah (ada 4 pilihan parameter
       "WAKTU CUCI", "FORWARD DURATION", "REVERSE DURATION", dan "STOP DURATION")
    3. gunakan tombol TAMBAH/KURANG untuk merubah delay time
    4. tekan START untuk keluar dari MENU. 
    5. mesin cuci langsung MENYALA.

*/

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <TM1637Display.h>

// Adjust these pins to match your connections
const int CLK = 11;
const int DIO = 12;

// Definisi nilai heksadesimal untuk huruf S, T, dan O (sesuaikan dengan peta segmen)
const uint8_t SEG_IP[] = {0x6d ,0x78, 0x3f, 0x73,};
const uint8_t DONE[] = {0x5e, 0x3f, 0x54, 0x79};
const uint8_t A [] = {0x77, 0x40};
const uint8_t b [] = {0x7c, 0x40};
const uint8_t C [] = {0x39, 0x40};
const uint8_t d [] = {0x5E, 0x40};
const uint8_t F [] = {0x71, 0x40};
const uint8_t r [] = {0x31, 0x40};


int inputPin = 2; // Input pin with pull-up resistor
int m_forward = 5; // Relay 1 (forward) control pin
int m_reverse = 6; // Relay 2 (reverse) control pin
int tombolStop = 3; // Pin untuk tombol stop
int tombolMenu = 4; // Pin untuk tombol menu
const int buzzerPin = 7; // Pin connected

bool keylock =false;
long value = 10; // Nilai awal
long menit = 60000;
unsigned long startTime = 0;
bool timerActive = false;
unsigned long remainingTime = 0; // New variable for remaining time

LiquidCrystal_I2C lcd(0x27, 16, 2); // Initialize the LCD with its I2C address (0x27) and dimensions (16x2)

unsigned long startMillis; // Start time
unsigned long currentMillis; // Current time
int forwardDuration = 18000; // Forward duration (in milliseconds)
int reverseDuration = 18000; // Reverse duration (in milliseconds)
int stopDuration = 3000; // Stop duration (in milliseconds)
bool isForward = true; // Forward/reverse status

int menuStatus = 0; // 0: normal, 1: menu utama, 2: value, 3: forward, 4: reverse, 5: stop
int selectedOption = 1;
bool isSettingComplete = true; // Variabel baru untuk menandai selesai pengaturan

// Define the notes and their durations (adjust as needed)
int notes[] = {220, 246, 261,246, 261, 293, 370, 393}; // Contoh: G4, F4, G4, F4, G4, A4, B4, C5

// Durasi setiap nada (dalam milidetik)
int durations[] = {200, 200, 450, 200, 200, 450, 450, 1000}; // Durations (in milliseconds)

// TM1637 display setup
TM1637Display display(CLK, DIO); // Adjust pins based on your wiring

void setup() {
  Serial.begin(9600);
  pinMode(inputPin, INPUT_PULLUP);
  pinMode(m_forward, OUTPUT);
  pinMode(m_reverse, OUTPUT);
  pinMode(tombolStop, INPUT_PULLUP); // Atur pin tombol sebagai input
  pinMode(tombolMenu, INPUT_PULLUP); // Atur pin tombol menu sebagai input
  display.setBrightness(7); // Set brightness level

  lcd.init(); // Initialize the LCD
  lcd.backlight(); // Turn on the 
  lcd.setCursor(0, 0); // Set the cursor to the first row
  lcd.print("TIMER MESIN CUCI"); // Display initial message
  lcd.setCursor(0, 1); // Set the cursor to the first row
  lcd.print("    BY ANDRI"); // Display initial message  

  digitalWrite(m_forward, LOW);
  digitalWrite(m_reverse, LOW);
  startMillis = millis(); // Record start time
}

void loop() {
  
  if ((menuStatus < 1) &&(!timerActive) && digitalRead(inputPin) == LOW) {
    // Input pull-up active, start the timer
    startTime = millis();
    timerActive = true;
    lcd.clear();
    Serial.println("CUCI DIMULAI!");
    lcd.setCursor(1, 0); // Set the cursor to the first row
    lcd.print("CUCI DIMULAI!!"); // Display initial message
  }

  if (timerActive) {
    // Cek status tombol stop
    if (digitalRead(tombolStop) == LOW) {
      
      timerActive = false;
      digitalWrite(m_forward, LOW);
      digitalWrite(m_reverse, LOW);
      Serial.println("CUCIAN DI OFF!!");
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("CUCIAN DI  OFF!!");
      lcd.setCursor(0, 1);
      lcd.print(" ADA PERLU APA?");
      display.setSegments(SEG_IP);

      for (int i = 0; i < 8; i++) {
    tone(buzzerPin, notes[i]); // Play the note
    delay(durations[i]);
    noTone(buzzerPin); // Stop the note
  }
      return; // Keluar dari fungsi loop()
    }

    unsigned long currentTime = millis();
    remainingTime = menit * value - (currentTime - startTime); // Calculate remaining time
    lcd.setCursor(0, 1); // Set cursor to the second row
    lcd.print("Waktu: " + String(remainingTime / 60000) + "Mnt " + String((remainingTime % 60000) / 1000)+ "dtk ");
    Serial.print("Waktu: " + String(remainingTime / 60000) + ":" + String((remainingTime % 60000) / 1000));
    display.showNumberDec(remainingTime % 60000 / 1000, true, 2, 2); // Display seconds
    display.showNumberDecEx(remainingTime / 60000, 0b01000000, true, 2, 4); // Display minutes

//SAAT TOMBOL START DITEKAN, TIMER MULAI MENGHITUNG DAN MOTOR BERJALAN   
    if (currentTime - startTime >= menit*(value)) {
      timerActive = false;
      digitalWrite(m_forward, LOW); // Turn off relay 1
      digitalWrite(m_reverse, LOW); // Turn off relay 2
      Serial.println("NYUCINYA UDAH SELESAI BANG!!");
      lcd.clear();
      lcd.setCursor(0, 0); // Set the cursor to the first row
      lcd.print(" CUCI SELESAI!!"); // Display initial message
      display.setSegments(SEG_IP);
      // Timer ends
            for (int i = 0; i < 8; i++) {
    tone(buzzerPin, notes[i]); // Play the note
    delay(durations[i]);
    noTone(buzzerPin); // Stop the note
  }
    } else {
      currentMillis = millis();

      // Move forward for 5 seconds
      if (isForward && currentMillis - startMillis < forwardDuration) {
        digitalWrite(m_forward, HIGH);
        digitalWrite(m_reverse, LOW);
      }
      // Reverse for 5 seconds after moving forward
      else if (!isForward && currentMillis - startMillis < reverseDuration) {
        digitalWrite(m_forward, LOW);
        digitalWrite(m_reverse, HIGH);
      }
      // Stop for 1 second before changing direction
      else if (currentMillis - startMillis < forwardDuration + stopDuration) {
        digitalWrite(m_forward, LOW);
        digitalWrite(m_reverse, LOW);
      }
      // Switch direction after completing the duration
      else {
        isForward = !isForward;
        startMillis = currentMillis; // Reset start time
        digitalWrite(m_forward, LOW);
        digitalWrite(m_reverse, LOW);
      }
    }
  }
  
  //jika motor sudah running, tombol MENU tidak berfungsi.
  keylock = (digitalRead(tombolMenu) == LOW); 
  // Cek tombol menu dan tambah secara bersamaan
  if ((keylock) && (!timerActive) && digitalRead(tombolMenu) == LOW) {
    menuStatus = (menuStatus + 1); // Toggle menu status
    delay(300);
  }

  // Tampilkan menu jika menuStatus != 0
  if (menuStatus != 0) {
    showMenu();
  }
}

void showMenu() {
//MENU TAMPILAN
  lcd.setCursor(0, 0);
  switch (menuStatus) {
    case 1:
      lcd.print("WAKTU NYUCI     ");
      lcd.setCursor(0, 1);
      lcd.print("Aktual: " + String(value) + " Menit  ");
      display.setSegments(C, 2, 4);
      display.showNumberDec(value, true, 2, 2);     
      break;
    case 2:
      lcd.print("FORWARD DURATION");
      lcd.setCursor(0, 1);
      lcd.print("Aktual: " + String(forwardDuration / 1000)+ " Detik  ");
      display.setSegments(F, 2, 4);
      display.showNumberDec(forwardDuration / 1000, true, 2, 2);
      break;
    case 3:
      lcd.print("REVERSE DURATION");
      lcd.setCursor(0, 1);
      lcd.print("Aktual: " + String(reverseDuration / 1000) + " Detik  ");
      display.showNumberDec(reverseDuration / 1000, true, 2, 2);
      display.setSegments(r, 2, 4);
      break;
    case 4:
      lcd.print("STOP DURATION   ");
      lcd.setCursor(0, 1);
      lcd.print("Aktual: " + String(stopDuration / 1000) + " Detik ");
      display.setSegments(d, 2, 4);
      display.showNumberDec(stopDuration / 1000, true, 2, 2);
      break;
      default: 
      if (menuStatus >=4) {
        menuStatus = 0; // Keluar dari menu
        isSettingComplete = true; // Reset untuk pengaturan berikutnya
        lcd.setCursor(1, 0);
        lcd.clear();
        lcd.print("   SETTINGAN");
        lcd.setCursor(0, 1);
        lcd.print("    SELESAI!");
        display.setSegments(DONE);
      }
      break; 
  }

  // Logika untuk mengubah nilai saat dalam menu (menggunakan tombol tambah dan kurang)
  if (digitalRead(inputPin) == LOW) {
    switch (menuStatus) {
      case 1:
        value++;
        break;
      case 2:
        forwardDuration += 1000; // Tambah 1 detik
        break;
      case 3:
        reverseDuration += 1000; // Tambah 1 detik
        break;
      case 4:
        stopDuration += 1000; // Tambah 1 detik
        break;
    }
    delay(100); // Delay untuk menghindari penambahan nilai berulang kali
  }

  if (digitalRead(tombolStop) == LOW) {
    switch (menuStatus) {
      case 1:
        if (value > 0) {
          value--;
        }
        break;
      case 2:
        if (forwardDuration > 0) {
          forwardDuration -= 1000; // Kurangi 1 detik
        }
        break;
      case 3:
        if (reverseDuration > 0) {
          reverseDuration -= 1000; // Kurangi 1 detik
        }
        break;
      case 4:
        if (stopDuration > 0) {
          stopDuration -= 1000; // Kurangi 1 detik
        }
        break;
    }
    delay(100); // Delay untuk menghindari pengurangan nilai berulang kali
  }
 
  // Perbarui tampilan nilai aktual
 
}