#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>

#define DHTPIN 32
#define DHTTYPE DHT22

LiquidCrystal_I2C lcd(0x27, 16, 2);
RTC_DS1307 rtc;  // Pastikan DS3231 jika Anda pakai modul DS3231, atau gunakan DS1307 untuk modul lain
DHT dht(DHTPIN, DHTTYPE);

unsigned long previousMillis = 0;
bool showTempHumidity = false; // Memulai dengan menampilkan tanggal dan waktu

// WiFi credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// NTP configuration
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", 28800, 60000); // Sesuaikan zona waktu Anda (25200 untuk GMT+7)

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  dht.begin();

  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to WiFi");

  // Start NTP client
  timeClient.begin();
  timeClient.update();

  if (!rtc.begin()) {
    lcd.print("RTC tidak ditemukan!");
    while (1);
  }

  // Set RTC with NTP time
  if (!rtc.isrunning()) {
    timeClient.update();
    rtc.adjust(DateTime(timeClient.getEpochTime())); // Sinkronkan waktu awal dari NTP
  }
}

void loop() {
  DateTime now = rtc.now();
  unsigned long currentMillis = millis();
  
  // Cek apakah sudah 5 detik berlalu
  if (currentMillis - previousMillis >= 5000) {
    previousMillis = currentMillis;
    showTempHumidity = !showTempHumidity; // Bergantian antara tanggal dan suhu/kelembapan
  }

  if (showTempHumidity) {
    // Tampilkan Suhu dan Kelembapan
    float temperature = dht.readTemperature();
    float humidity = dht.readHumidity();
    
    lcd.setCursor(0, 0);
    if (isnan(temperature) || isnan(humidity)) {
      lcd.print("Error membaca DHT");
    } else {
      lcd.print("Suhu: ");
      lcd.print(temperature, 0);
      lcd.print((char)223); // Simbol derajat
      lcd.print("C ");
      lcd.print(humidity, 0);
      lcd.print("% ");
    }
  } else {
    // Tampilkan Tanggal
    lcd.setCursor(0, 0);
    lcd.print("Tgl: ");
    lcd.print(now.day());
    lcd.print("/");
    lcd.print(now.month());
    lcd.print("/");
    lcd.print(now.year());
    lcd.print("      "); // Kosongkan sisa karakter
  }

  // Tampilkan waktu di baris kedua (konstan)
  lcd.setCursor(0, 1);
  lcd.print("Waktu: ");
  lcd.print(now.hour());
  lcd.print(":");
  if (now.minute() < 10) lcd.print("0");
  lcd.print(now.minute());
  lcd.print(":");
  if (now.second() < 10) lcd.print("0");
  lcd.print(now.second());
  
  delay(1000); // Perbarui setiap detik
}