#include <Arduino.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>
#include <DHT.h>

#define DHTPIN 23
#define DHTTYPE DHT22

// Parameter Wi-Fi 
//String ssid = "Wokwi-GUEST";
//String password = "";

// Parameter URL/Endpoint 
String accessToken = "9b0vrxj9hethm5c2gvnl";
String url = "https://demo.thingsboard.io/api/v1/"+ accessToken + "/telemetry";

DHT dht(DHTPIN, DHTTYPE);

void connectWiFi(String ssid, String password){
  // Initialize Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');
    delay(1000);
  }
  Serial.println(WiFi.localIP());
}

void setup() {
  // Initialize Serial Communication
  Serial.begin(115200);
  Serial.println();

  dht.begin();

  connectWiFi("Wokwi-GUEST","");
}

void loop() {
  WiFiClientSecure *client = new WiFiClientSecure;
  if(client) {
    float t = dht.readTemperature();
    float h = dht.readHumidity();

    if(isnan(t) || isnan(h)){
      Serial.println(F("Failed to read from DHT sensor!"));
      return;
    }

    // set secure client without certificate
    client->setInsecure();
    //create an HTTPClient instance
    HTTPClient https;

    //Initializing an HTTPS communication using the secure client
    Serial.print("[HTTPS] begin...\n");
    
    https.begin(*client, url);
    String httpsBody = "{\"temperature\":"+ String(t) + ",\"humidity\":"+ String(h) +"}";
    Serial.println(httpsBody);
    int httpsResponseCode = https.POST(httpsBody);

    Serial.print("HTTPS Response Code: ");
    Serial.println(httpsResponseCode);

    https.end();
    delay(20000);
  }
}