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

#define DHTPIN 2
#define DHTTYPE DHT22
#define RELAY_PIN 7
#define LED_AC_PIN 13
#define UV_LED_PIN 8
#define LDR_PIN A0
#define RGB_PIN_R 3
#define RGB_PIN_G 5
#define RGB_PIN_B 6
#define TRIG_PIN 9
#define ECHO_PIN 10
#define SERVO_PIN 11
#define BUZZER_PIN 12
#define BUTTON_PIN 4

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 20, 4);
Servo myservo;

bool servoOpened = false;  // Status apakah servo terbuka
bool lastButtonState = HIGH;  // Status terakhir dari tombol

void setup() {
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(LED_AC_PIN, OUTPUT);
  pinMode(UV_LED_PIN, OUTPUT);
  pinMode(RGB_PIN_R, OUTPUT);
  pinMode(RGB_PIN_G, OUTPUT);
  pinMode(RGB_PIN_B, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP); // Pushbutton dengan pullup

  digitalWrite(RELAY_PIN, LOW);
  digitalWrite(LED_AC_PIN, LOW);
  digitalWrite(UV_LED_PIN, LOW);
  lcd.begin(20, 4);
  lcd.backlight();
  dht.begin();
  myservo.attach(SERVO_PIN);
  myservo.write(0); // Awal posisi servo (pintu tertutup)
}

void loop() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  int lightLevel = analogRead(LDR_PIN);
  
  // Pengukuran jarak dengan sensor ultrasonik
  long duration;
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  long distance = (duration / 2) / 29.1;

  // Menampilkan data di LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(t);
  lcd.print(" C");

  lcd.setCursor(0, 1);
  lcd.print("Kelembapan: ");
  lcd.print(h);
  lcd.print(" %");

  lcd.setCursor(0, 2);
  lcd.print("Cahaya: ");
  lcd.print(lightLevel);

  lcd.setCursor(0, 3);
  lcd.print("Jarak: ");
  lcd.print(distance);
  lcd.print(" cm");

  // Kontrol LED untuk AC
  if (t > 30 || h < 20) {
    digitalWrite(RELAY_PIN, HIGH);
    digitalWrite(LED_AC_PIN, HIGH);
  } else {
    digitalWrite(RELAY_PIN, LOW);
    digitalWrite(LED_AC_PIN, LOW);
  }

  // Kontrol RGB LED berdasarkan suhu
  if (t > 25) {
    analogWrite(RGB_PIN_R, 255);   // Merah untuk suhu tinggi
    analogWrite(RGB_PIN_G, 0);
    analogWrite(RGB_PIN_B, 0);
  } else if (t >= 20 && t <= 25) {
    analogWrite(RGB_PIN_R, 0);
    analogWrite(RGB_PIN_G, 255);   // Hijau untuk suhu normal
    analogWrite(RGB_PIN_B, 0);
  } else {
    analogWrite(RGB_PIN_R, 0);
    analogWrite(RGB_PIN_G, 0);
    analogWrite(RGB_PIN_B, 255);   // Biru untuk suhu rendah
  }

  // Kontrol LED untuk Lampu Rumah
  if (lightLevel < 400) {
    digitalWrite(UV_LED_PIN, HIGH); // Menyalakan lampu
  } else {
    digitalWrite(UV_LED_PIN, LOW); // Mematikan lampu
  }

  // Kontrol Buzzer
  if (distance <= 10) { // Jika jarak <= 3 cm
    digitalWrite(BUZZER_PIN, HIGH); // Buzzer menyala
  } else {
    digitalWrite(BUZZER_PIN, LOW); // Buzzer mati
  }

  // Membaca status tombol
  bool buttonState = digitalRead(BUTTON_PIN);

  // Deteksi perubahan status tombol (ditekan dan dilepas)
  if (buttonState == LOW && lastButtonState == HIGH) {
     delay(50); 
    // Toggle status servo
    if (servoOpened) {
      myservo.write(0);  // Tutup servo
      servoOpened = false;
    } else {
      myservo.write(90); // Buka servo
      servoOpened = true;
    }
    delay(200); // Debounce untuk menghindari pembacaan tombol yang tidak akurat
  }

  lastButtonState = buttonState;

  delay(2000);
}