#if defined(ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ESP32)
#include <WiFi.h>
#endif

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

#include "ThingsBoard.h"
#include "DHTesp.h"
#include <PubSubClient.h>
#include <ArduinoJson.h>


#define CURRENT_FIRMWARE_TITLE    "TEST"
#define CURRENT_FIRMWARE_VERSION  "1.0.0"

#define WIFI_SSID           "Wokwi-GUEST"
#define WIFI_PASSWORD       ""


#define TOKEN               "UY12VDuTYd4bDTZffSvP"
#define THINGSBOARD_SERVER  "thingsboard.cloud"


#define SERIAL_DEBUG_BAUD   115200

const int DHT_PIN = 15;

DHTesp dhtSensor;


WiFiClient espClient;

ThingsBoard tb(espClient);

int status = WL_IDLE_STATUS;




int quant = 20;

int send_delay = 2000;


int send_passed = 0;


bool subscribed = false;



float temperature = 0;
float humidity = 0;




void InitWiFi()
{
  Serial.println("Connecting to AP ...");
  

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {

    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}

void reconnect() {
 
  status = WiFi.status();
  if ( status != WL_CONNECTED) {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("Connected to AP");
  }
}

void setup() {
  
  Serial.begin(SERIAL_DEBUG_BAUD);
  Serial.println();
  InitWiFi();
  LCD.init();
  LCD.backlight();
  
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
   delay(quant);

  
  send_passed += quant;


  if (WiFi.status() != WL_CONNECTED) {
    reconnect();
    return;
  }


  if (!tb.connected()) {
    subscribed = false;

    // Connect to the ThingsBoard
    Serial.print("Connecting to: ");
    Serial.print(THINGSBOARD_SERVER);
    Serial.print(" with token ");
    Serial.println(TOKEN);
    if (!tb.connect(THINGSBOARD_SERVER, TOKEN)) {
      Serial.println("Failed to connect");
      return;
    }
  }

 
  if (!subscribed) {
    Serial.println("Subscribing for RPC... ");

   
    if (!tb.RPC_Subscribe(callbacks, COUNT_OF(callbacks))) {
      Serial.println("Failed to subscribe for RPC");
      return;
    }

    Serial.println("Subscribe done");
    subscribed = true;
  }  

 
  if (send_passed > send_delay) {
    Serial.println();
    Serial.print("Sending data... ");
    TempAndHumidity lastValues = dhtSensor.getTempAndHumidity();    

    if (isnan(lastValues.humidity) || isnan(lastValues.temperature)) {
      Serial.println("Failed to read from DHT sensor!");
    } else {
      temperature = lastValues.temperature;
      Serial.print("temperature: ");
      Serial.print(temperature);
      humidity = lastValues.humidity;
      Serial.print(" humidity: ");
      Serial.print(humidity);
      tb.sendTelemetryFloat("temperature", temperature);
      tb.sendTelemetryFloat("humidity", humidity);
    }
    send_passed = 0;
  }

  tb.loop();

  LCD.setCursor(0, 0);
  LCD.print("Temp: " + String(data.temperature, 2) + " C");
  LCD.setCursor(0, 1);
  LCD.print("Humidity: " + String(data.humidity, 1) + " %");
}