#include <DHTesp.h>
#define pinDht 15
DHTesp dhtSensor;
#include <WiFi.h>
#include <ThingsBoard.h>
#include <Arduino_MQTT_Client.h>
#define WIFI_AP "Wokwi-GUEST"
#define WIFI_PASS ""

#define TB_SERVER "thingsboard.cloud"
#define TOKEN "TE6loLb1FVrpqUi47sUb"

//=====================================================
constexpr uint16_t MAX_MESSAGE_SIZE = 128U;
WiFiClient espClient;
Arduino_MQTT_Client mqttClient(espClient);
ThingsBoard tb(mqttClient, MAX_MESSAGE_SIZE);

void connectToWiFi() {
  Serial.println("Connecting to WiFi...");
  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < 20) {
    WiFi.begin(WIFI_AP, WIFI_PASS, 6);
    delay(500);
    Serial.print(".");
    attempts++;
  }
  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("\nFailed to connect to WiFi.");
  } else {
    Serial.println("\nConnected to WiFi");
  }
}
void connectToThingsBoard() {
  if (!tb.connected()) {
    Serial.println("Connecting to ThingsBoard server");
    
    if (!tb.connect(TB_SERVER, TOKEN)) {
      Serial.println("Failed to connect to ThingsBoard");
    } else {
      Serial.println("Connected to ThingsBoard");
    }
  }
}

//=====================================================


 void sendDataToThingsBoard(float temp, int hum) {
  String jsonData = "{\"temperature\":" + String(temp) + ", \"humidity\":" + String(hum) + "}";
  tb.sendTelemetryJson(jsonData.c_str());
  Serial.println("Data sent");
 }

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(pinDht,DHTesp::DHT22);
  connectToWiFi();
  connectToThingsBoard();
}

void loop() {
  connectToWiFi();
  TempAndHumidity data =dhtSensor.getTempAndHumidity();
  float temp = data.temperature;
  int hum = data.humidity;
  Serial.println(temp);
  Serial.println(hum);
  if (!tb.connected()) {
    connectToThingsBoard();
  }
  sendDataToThingsBoard(temp, hum);
  delay(3000);
  tb.loop();
}