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

// Inisialisasi pin
const int produksiPin = 2;
const int startDowntimePin = 3;
const int stopDowntimePin = 4;
const int startProduksiPin = 5;
const int stopProduksiPin = 6;
const int rejectQualityPin = 7;

unsigned long cycleTime = 0;
unsigned long startCycleTime = 0;
unsigned long downtime = 0;
unsigned long startDowntime = 0;
unsigned long produksiCount = 0;
unsigned long rejectCount = 0;
unsigned long startProductionTime = 0;
unsigned long totalProductionTime = 0;

unsigned long targetProduksi = 100; // Target produksi
const float standarCycleTime = 9.0; // Cycle time standar dalam detik

bool produksiRunning = false;
bool produksiStopped = false;
bool downtimeRunning = false;

// Debouncing
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Inisialisasi LCD I2C dengan alamat 0x27, 16 kolom dan 2 baris

void setup() {
  pinMode(produksiPin, INPUT_PULLUP);
  pinMode(startDowntimePin, INPUT_PULLUP);
  pinMode(stopDowntimePin, INPUT_PULLUP);
  pinMode(startProduksiPin, INPUT_PULLUP);
  pinMode(stopProduksiPin, INPUT_PULLUP);
  pinMode(rejectQualityPin, INPUT_PULLUP);
  
  Serial.begin(9600);
  lcd.begin(16, 2);  // Inisialisasi LCD I2C dengan 16 kolom dan 2 baris
  lcd.backlight();
}

void loop() {
  int produksiButtonState = digitalRead(produksiPin);
  
  // Debouncing produksi button
  if (produksiButtonState == LOW && (millis() - lastDebounceTime) > debounceDelay) {
    produksiCount++;
    lastDebounceTime = millis();
    delay(200);  // Tambahan debounce untuk memastikan pembacaan yang stabil
  }

  if (digitalRead(startProduksiPin) == LOW && !produksiRunning && !produksiStopped) {
    produksiRunning = true;
    startCycleTime = millis();
    startProductionTime = millis();
    Serial.println("Produksi dimulai.");
    lcd.setCursor(0, 0);
    lcd.print("Produksi: ");
    lcd.print(produksiCount);
    delay(200);  // Debounce
  }

  if (digitalRead(stopProduksiPin) == LOW && produksiRunning) {
    produksiRunning = false;
    produksiStopped = true;
    cycleTime += millis() - startCycleTime;
    totalProductionTime += millis() - startProductionTime;
    Serial.println("Produksi berhenti.");
    tampilkanOEE();
    delay(200);  // Debounce
  }

  if (digitalRead(startDowntimePin) == LOW && !downtimeRunning) {
    downtimeRunning = true;
    startDowntime = millis();
    Serial.println("Downtime dimulai.");
    delay(200);  // Debounce
  }

  if (digitalRead(stopDowntimePin) == LOW && downtimeRunning) {
    downtimeRunning = false;
    downtime += millis() - startDowntime;
    Serial.println("Downtime berhenti.");
    delay(200);  // Debounce
  }

  if (digitalRead(rejectQualityPin) == LOW) {
    rejectCount++;
    Serial.println("Reject Quality.");
    delay(200);  // Debounce
  }

  // Display data
  if (millis() % 5000 < 50 && !produksiStopped) { // Setiap 5 detik
    Serial.print("Produksi: ");
    Serial.println(produksiCount);
    Serial.print("Cycle Time: ");
    Serial.println(cycleTime / 1000); // dalam detik
    Serial.print("Downtime: ");
    Serial.println(downtime / 1000); // dalam detik

    // Hitung persentase target produksi
    float persentasePencapaian = ((float)produksiCount / targetProduksi) * 100;
    Serial.print("Pencapaian Target: ");
    Serial.print(persentasePencapaian);
    Serial.println("%");

    // Update LCD
    lcd.setCursor(0, 0);
    lcd.print("Prod: ");
    lcd.print(produksiCount);
    lcd.print(" Tgt: ");
    lcd.print(persentasePencapaian);
    lcd.print("%");

    lcd.setCursor(0, 1);
    lcd.print("Down: ");
    lcd.print(downtime / 1000);
    lcd.print("s Rej: ");
    lcd.print(rejectCount);
  }

  // Hitung OEE setiap 10 detik
  if (millis() % 10000 < 50 && !produksiStopped) {
    tampilkanOEE();
  }
}

void tampilkanOEE() {
  unsigned long totalTime = millis() / 1000; // dalam detik
  if (totalTime > 0) {
    float availability = ((float)(totalTime - downtime / 1000) / totalTime) * 100;
    float performance = ((float)produksiCount / (totalTime / standarCycleTime)) * 100;
    float quality = ((float)(produksiCount - rejectCount) / produksiCount) * 100;

    float oee = (availability / 100) * (performance / 100) * (quality / 100) * 100;

    Serial.print("Availability: ");
    Serial.print(availability);
    Serial.println("%");

    Serial.print("Performance: ");
    Serial.print(performance);
    Serial.println("%");

    Serial.print("Quality: ");
    Serial.print(quality);
    Serial.println("%");

    Serial.print("OEE: ");
    Serial.print(oee);
    Serial.println("%");

    // Update LCD
    lcd.setCursor(0, 0);
    lcd.print("Avail: ");
    lcd.print(availability);
    lcd.print("%");

    lcd.setCursor(0, 1);
    lcd.print("OEE: ");
    lcd.print(oee);
    lcd.print("%");
  }
}