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

// Replace with your network credentials
const char* ssid = "Wokwi-GUEST"; // Nama jaringan WiFi yang akan dihubungkan
const char* password = ""; 

// Replace with your ThingsBoard device token
const char* token = "w6uYaA0WP3GlbN2GOpn7";
const char* server = "http://thingsboard.cloud"; // or your own ThingsBoard server URL

void setup() {
  Serial.begin(115200);
  delay(10);

  // Initialize random seed
  randomSeed(analogRead(0));

  // Connect to Wi-Fi
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) { // Check Wi-Fi connection status
    HTTPClient http;

    // Generate random telemetry data
    float temperature = random(200, 300) / 10.0; // Random temperature between 20.0 and 30.0
    float humidity = random(300, 800) / 10.0;    // Random humidity between 30.0 and 80.0

    // Create JSON payload
    DynamicJsonDocument doc(1024);
    doc["temperature"] = temperature;
    doc["humidity"] = humidity;
    String payload;
    serializeJson(doc, payload);

    // Send telemetry data
    String url = String(server) + "/api/v1/" + token + "/telemetry";
    http.begin(url);
    http.addHeader("Content-Type", "application/json");
    
    int httpResponseCode = http.POST(payload);

    if (httpResponseCode > 0) {
      String response = http.getString(); // Get the response to the request
      Serial.println(httpResponseCode); // Print return code
      Serial.println(response); // Print request answer
    } else {
      Serial.print("Error on sending POST: ");
      Serial.println(httpResponseCode);
    }

    http.end(); // Free resources

    delay(5000); // Send data every 5 seconds
  } else {
    Serial.println("WiFi Disconnected");
  }
}