#include <Arduino.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <WiFi.h>
#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>

RTC_DS3231 rtc;

const char* ssid = "Wokwi-GUEST"; // Nama jaringan WiFi
const char* password = ""; // Kata sandi jaringan WiFi


#define BUTTON_PIN 13 // Pin yang terhubung dengan push button
LiquidCrystal_I2C lcd(0x27, 16, 2);
bool backlightState = false;



void setup() {
  Serial.begin(115200);
  Wire.begin();
  rtc.begin();


  pinMode(BUTTON_PIN, INPUT_PULLUP); // Mengatur pin push button sebagai input dengan pull-up resistor

  // Inisialisasi LCD
  lcd.init();
  lcd.backlight(); // Nyalakan backlight LCD

  // Inisialisasi WiFi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to ");
  Serial.println(ssid);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Establishing connection to WiFi..");
  }
  Serial.println("Connected to WiFi");

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (rtc.lostPower()) {
    Serial.println("RTC lost power, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  // Buat dan jalankan task RTOS
  xTaskCreatePinnedToCore(wifiRtcTask,"WifiRtcTask",10000,NULL,1,NULL,0);
  xTaskCreatePinnedToCore(back,"back",10000,NULL,1,NULL,0);  
}

void loop() {
  delay(1000);
}

void wifiRtcTask(void *parameter) {
  (void) parameter;

  for (;;) {
    DateTime now = rtc.now();
    lcd.setCursor(0,0);
    lcd.print(now.timestamp(DateTime::TIMESTAMP_FULL));
    //vTaskDelay(pdMS_TO_TICKS(500)); // Tunggu 10 detik sebelum membaca ulang waktu
  }
}

void back(void *parameter) {
  (void) parameter;

  for (;;) {
    int buttonState = digitalRead(BUTTON_PIN);

    if (buttonState == LOW) {
      backlightState = !backlightState;

      if (backlightState) {
        lcd.backlight(); // Nyalakan backlight LCD
      } else {
        lcd.noBacklight(); // Matikan backlight LCD
      }
      vTaskDelay(pdMS_TO_TICKS(250));
    }
  }
}