#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <ESP32Servo.h>
#include <DHT.h>

// Konfigurasi LCD
LiquidCrystal_I2C lcd(0x27, 20, 4);

// Konfigurasi DHT22
#define DHTPIN 14 // Pin untuk DHT22
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Konfigurasi Keypad
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
    {'1', '2', '3', 'A'},
    {'4', '5', '6', 'B'},
    {'7', '8', '9', 'C'},
    {'*', '0', '#', 'D'}};
byte rowPins[ROWS] = {15, 2, 4, 5}; // Pin baris
byte colPins[COLS] = {18, 19, 23, 33}; // Pin kolom
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Konfigurasi Servo
Servo myServo;
#define SERVO_PIN 13

// Konfigurasi LED dan LDR
#define LDR_PIN 34      // Pin LDR (AO)
#define LED_LIGHT 25    // LED untuk lampu otomatis
#define LED_FAN 26      // LED untuk kipas

// Kata sandi
const String PASSWORD = "1234";
String inputPassword = "";

void setup() {
  // Inisialisasi komponen
  Serial.begin(115200);
  lcd.begin(20, 4);
  lcd.print("System Initializing...");
  delay(2000);

  lcd.clear();
  lcd.print("Enter Password:");
  dht.begin();

  // Servo dan LED
  myServo.attach(SERVO_PIN);
  myServo.write(0); // Posisi awal pintu tertutup
  pinMode(LED_LIGHT, OUTPUT);
  pinMode(LED_FAN, OUTPUT);
}

void loop() {
  // Pembacaan keypad
  char key = keypad.getKey();
  if (key) {
    if (key == '#') { // Tombol konfirmasi
      if (inputPassword == PASSWORD) {
        lcd.clear();
        lcd.print("Access Granted!");
        myServo.write(90); // Buka pintu
        delay(5000);
        myServo.write(0); // Tutup pintu
        lcd.clear();
        lcd.print("Enter Password:");
      } else {
        lcd.clear();
        lcd.print("Access Denied!");
        delay(2000);
        lcd.clear();
        lcd.print("Enter Password:");
      }
      inputPassword = ""; // Reset input
    } else if (key == '*') { // Tombol reset
      inputPassword = "";
      lcd.setCursor(0, 1);
      lcd.print("                "); // Hapus input
    } else {
      if (inputPassword.length() < PASSWORD.length()) {
        inputPassword += key;
        lcd.setCursor(0, 1);
        lcd.print(inputPassword);
      }
    }
  }

  // Baca data dari DHT22
  float temp = dht.readTemperature();
  float hum = dht.readHumidity();

  lcd.setCursor(0, 2);
  lcd.print("Temp:");
  lcd.print(temp);
  lcd.print("C ");
  lcd.print("Hum:");
  lcd.print(hum);
  lcd.print("% ");

  // Kontrol LDR untuk lampu otomatis
  int ldrValue = analogRead(LDR_PIN);
  if (ldrValue < 1000) { // Kondisi gelap
    digitalWrite(LED_LIGHT, HIGH);
    lcd.setCursor(0, 3);
    lcd.print("Lampu: ON ");
  } else {
    digitalWrite(LED_LIGHT, LOW);
    lcd.setCursor(0, 3);
    lcd.print("Lampu: OFF");
  }

  // Simulasikan kipas berdasarkan suhu
  if (temp > 30) { // Jika suhu > 30C
    digitalWrite(LED_FAN, HIGH);
  } else {
    digitalWrite(LED_FAN, LOW);
  }

  delay(1000); // Loop dengan jeda
}