#include "DHT.h"
#include <WiFi.h>
#include <ThingsBoard.h>

#define WIFI_AP "Wokwi-GUEST"
#define WIFI_PASSWORD ""
// Potentiometer is connected to GPIO 34 (Analog ADC1_CH6) 
const int potPin = 34;

// variable for storing the potentiometer value
int potValue = 0;
#define TOKEN "lO4nYQQ25iQ7L5cl68K6"

// DHT
#define DHTPIN 15
#define DHTTYPE DHT22

char thingsboardServer[] = "thingsboard.cloud";

WiFiClient client1;

// Initialize DHT sensor.
DHT dht(DHTPIN, DHTTYPE);

ThingsBoard device1(client1);

int status = WL_IDLE_STATUS;
unsigned long lastSend;

void setup()
{
  Serial.begin(115200);
  dht.begin();
  delay(10);
  InitWiFi();
  lastSend = 0;
}

void loop()
{
  if ( !device1.connected() ) {
    reconnect();
  }

  if ( millis() - lastSend > 1000 ) { // Update and send only after 1 seconds
    kirimDataKeThingsboard();
    lastSend = millis();
  }

  device1.loop();
}

void kirimDataKeThingsboard()
{
  Serial.println("Collecting temperature data.");
  potValue = analogRead(potPin);

  // Reading temperature or humidity takes about 250 milliseconds!
  float humidity = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float temperature = dht.readTemperature();

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.println("Sending data to ThingsBoard:");
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" *C\t ");
  Serial.print("potensio: ");
  Serial.print(potValue);
  Serial.println(" adc ");
  
  device1.sendTelemetryInt("pot",potValue);
  device1.sendTelemetryFloat("temperature", temperature);
  device1.sendTelemetryFloat("humidity", humidity);
}

void InitWiFi()
{
  Serial.println("Connecting to AP ...");
  // attempt to connect to WiFi network

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


void reconnect() {
  // Loop until we're reconnected
  while (!device1.connected()) {
    status = WiFi.status();
    if ( status != WL_CONNECTED) {
      WiFi.begin(WIFI_AP, WIFI_PASSWORD);
      while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
      }
      Serial.println("Connected to AP");
    }
    Serial.print("Connecting to ThingsBoard node ...");
    if ( device1.connect(thingsboardServer, TOKEN) ) {
      Serial.println( "[DONE]" );
    } else {
      Serial.print( "[FAILED]" );
      Serial.println( " : retrying in 5 seconds]" );
      // Wait 5 seconds before retrying
      delay( 5000 );
    }
  }
}