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

LiquidCrystal_I2C lcd(0x27, 16, 2); // Alamat I2C LCD: 0x27
Servo myservo;

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

#define pinTrig 7
#define pinEcho 6
#define ledHijau 8
#define ledMerah 9
#define ledBiru 10

const int threshold = 50; // Ambil nilai ambang batas untuk membedakan organik dan anorganik

void bukatutup()
{
  long duration, distance;
  digitalWrite(pinTrig, LOW);
  delayMicroseconds(2);
  digitalWrite(pinTrig, HIGH);
  delayMicroseconds(10);
  digitalWrite(pinTrig, LOW);
  duration = pulseIn(pinEcho, HIGH);
  distance = duration / 58.2;

  if (distance > 15)
  {
    myservo.write(90); // Posisi servo normal jika tidak ada sampah di dekat
    delay(1000);
  }
  else if (distance <= 15)
  {
    float humidity = dht.readHumidity(); // Baca nilai kelembapan

    if (humidity > threshold)
    {
      myservo.write(0); // Mendorong sampah ke kiri jika terdeteksi sampah organik
      delay(1000);
    }
    else
    {
      myservo.write(180); // Mendorong sampah ke kanan jika terdeteksi sampah non-organik
      delay(1000);
    }

    // Tambahkan logika untuk menahan servo di posisi awal ketika kedua jenis sampah terdeteksi bersamaan
    long secondDuration, secondDistance;
    digitalWrite(pinTrig, LOW);
    delayMicroseconds(2);
    digitalWrite(pinTrig, HIGH);
    delayMicroseconds(10);
    digitalWrite(pinTrig, LOW);
    secondDuration = pulseIn(pinEcho, HIGH);
    secondDistance = secondDuration / 58.2;

    if (secondDistance <= 15)
    {
      myservo.write(90); // Tahan servo di posisi awal jika kedua jenis sampah terdeteksi bersamaan
    }
  }
}

void ledorganik()
{
  digitalWrite(ledHijau, HIGH);
  digitalWrite(ledMerah, LOW);
  digitalWrite(ledBiru, LOW);
}

void lednonorganik()
{
  digitalWrite(ledHijau, LOW);
  digitalWrite(ledMerah, LOW);
  digitalWrite(ledBiru, HIGH);
}

void ledtidakterdeteksi()
{
  digitalWrite(ledHijau, LOW);
  digitalWrite(ledMerah, HIGH);
  digitalWrite(ledBiru, LOW);
}

void setup()
{
  Serial.begin(9600);
  lcd.begin(16, 2); // Inisialisasi LCD 16x2
  lcd.backlight(); // Aktifkan backlight LCD
  pinMode(pinTrig, OUTPUT);
  pinMode(pinEcho, INPUT);
  pinMode(ledHijau, OUTPUT);
  pinMode(ledMerah, OUTPUT);
  pinMode(ledBiru, OUTPUT);
  myservo.attach(3);
  dht.begin();
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(" -KELOMPOOK EIS-");
  lcd.setCursor(0, 1);
  lcd.print(" -SYSTEM READY-");
  delay(2000);

}

void loop()
{
  long duration, distance;

  digitalWrite(pinTrig, LOW);
  delayMicroseconds(2);
  digitalWrite(pinTrig, HIGH);
  delayMicroseconds(10);
  digitalWrite(pinTrig, LOW);
  duration = pulseIn(pinEcho, HIGH);
  distance = duration / 58.2;

 
  if (distance <= 15)
  {
    bukatutup();

    float humidity = dht.readHumidity(); // Baca nilai kelembapan

    if (humidity > threshold)
    {
      ledorganik();
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print(" -TYPE-");
      lcd.setCursor(0, 1);
      lcd.print("Organik");
      delay(1000);
    }
    else
    {
      lednonorganik();
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print(" - TYPE -");
      lcd.setCursor(0, 1);
      lcd.print("Non-Organik");
      delay(1000);
    }
  }
  else
  {
    bukatutup();
    ledtidakterdeteksi();
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print(" - TYPE -");
    lcd.setCursor(0, 1);
    lcd.print("Tidak Terdeteksi");
    delay(1000);
  }
}