#include <Arduino.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <LiquidCrystal_I2C.h>
//#include "DHTesp.h"



LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);

String wifiSSID = "Wokwi-GUEST";
String wifiPassword = "";


String tbHost = "demo.thingsboard.io";
String tbToken = "dzLSI2CCfJ784A8nWwBp";

//const int DHT_PIN = 15;
//DHTesp dhtSensor;
#define DEBUG
#ifdef DEBUG
#define SERIAL_BEGIN    Serial.begin(115200)
#define debug(p)        Serial.print(p)
#define debugln(p)      Serial.println(p)
#else
#define SERIAL_BEGIN
#define debug(p)
#define debugln(p)
#endif

//============================================================================================
//Pin yang dipakai di ESP32
#define NTC_ANALOG_PIN    34  //ke pin input sensor ntc
//============================================================================================

//============================================================================================
//Konfigurasi sensor NTC
const float BETA = 3950;
float suhu = 0.0;
//============================================================================================

//1.	Implementasi interface sensor NTC
//Fungsi untuk membaca nilai sensor NTC
float bacaSensorNTC(){
  //Baca nilai sensor menggunakan input analog
  int analogValue = analogRead(NTC_ANALOG_PIN);

  //Kalibrasi untuk mengkonversi nilai analog menjadi nilai suhu celsius
  float celsius = 1 / (log(1 / (4095. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  return celsius;
}
//============================================================================================


//DHTesp dhtSensor;

void connectWifi() {
  WiFi.begin(wifiSSID.c_str(), wifiPassword.c_str());
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }
}

void sendDataToThingsBoard(String temperature) {
  HTTPClient http;
  String url = "http://" + tbHost + "/api/v1/" + tbToken + "/telemetry";
  String payload = "{\"temperature\":" + temperature + "}";

  http.begin(url);
  http.addHeader("Content-Type", "application/json");

  int httpResponseCode = http.POST(payload);

  if (httpResponseCode > 0) {
    Serial.println("Data sent to ThingsBoard successfully");
  } else {
    Serial.println("Error sending data to ThingsBoard");
  }

  http.end();
}

void setup() {
  Serial.begin(115200);
  connectWifi();
 // dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();
}

void loop() {
  //TempAndHumidity  data = dhtSensor.getTempAndHumidity();
suhu = bacaSensorNTC();
  
  //Tampilkan ke Serial monitor
  debugln("[NTC] Temperature: " + String(suhu) + " ℃");
  
  delay(10); // this speeds up the simulation
  String temp = String(suhu,2);
 // String hum = String(data.humidity,1);

  // Serial.println("Temp: " + String(temp) + "°C");
  // Serial.println("Humidity: " + String(hum) + "%");
  // Serial.println("---");

  lcd.setCursor(0, 0);
  lcd.print("Temperature: " + temp); 
  //lcd.setCursor(0, 1);
  //lcd.print("Humidity: " + hum);  

  sendDataToThingsBoard(temp);
  delay(1000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
}