#include <WiFi.h>
#include <HTTPClient.h>

#define WIFI_AP "Wokwi-GUEST"
#define WIFI_PASS ""
#define THINGSBOARD_SERVER "thingsboard.cloud"
#define THINGSBOARD_TOKEN "mkzvx3x3vd3tsxilqihv"

const int LM35Pin = 34;
const int numReadings = 10;
int readings[numReadings];
int readingIndex = 0;
int total = 0;

void setup() {
  Serial.begin(9600);
  pinMode(LM35Pin, INPUT);
  analogReadResolution(12);

  for (int i = 0; i < numReadings; i++) {
    readings[i] = 0;
  }

  Serial.print("Connecting to WiFi");
  WiFi.begin(WIFI_AP, WIFI_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  Serial.println(" Starting!");
  delay(2000);
}

void loop() {
  int sensorValue = analogRead(LM35Pin);
  float temperatureC = (sensorValue / 4095.0) * 330.0;

  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.print("°C");
  Serial.println(" ~ ");

  // Kirim data ke ThingsBoard
  sendDataToThingsBoard(temperatureC);

  delay(1000);
}

void sendDataToThingsBoard(float temperature) {
  WiFiClient client;
  HTTPClient http;

  // URL untuk mengirim data ke ThingsBoard
  String url = "http://" + String(THINGSBOARD_SERVER) + "/api/v1/" + String(THINGSBOARD_TOKEN) + "/telemetry";

  // Buat payload JSON untuk dikirim ke ThingsBoard
  String payload = "{\"temperatureC\":" + String(temperature) + "}";

  // Kirim data ke ThingsBoard
  http.begin(client, url);
  http.addHeader("Content-Type", "application/json");
  int httpResponseCode = http.POST(payload);

  if (httpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
  } else {
    Serial.print("Error sending data to ThingsBoard. HTTP Response code: ");
    Serial.println(httpResponseCode);
  }

  http.end();
}