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

// Konfigurasi Wi-Fi (Wokwi menggunakan Wi-Fi virtual)
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// API Key dari ThingSpeak
const char* server = "http://api.thingspeak.com/update";
const char* apiKey = "API_KEY_ANDA";

// Pin MQ2 di ESP32
const int mq2Pin = 34;

void setup() {
  Serial.begin(115200);
  pinMode(mq2Pin, INPUT);

  // Koneksi ke Wi-Fi di Wokwi
  WiFi.begin(ssid, password);
  Serial.print("Menghubungkan ke Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("\nWi-Fi Terhubung!");
}

void loop() {
  int gasValue = analogRead(mq2Pin);  // Membaca data dari sensor MQ2
  Serial.print("Nilai Gas: ");
  Serial.println(gasValue);

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = String(server) + "?api_key=" + apiKey + "&field1=" + String(gasValue);

    http.begin(url);
    int httpResponseCode = http.GET();
    
    if (httpResponseCode > 0) {
      Serial.print("Data Terkirim, Respon: ");
      Serial.println(httpResponseCode);
    } else {
      Serial.print("Gagal Kirim Data, Error: ");
      Serial.println(httpResponseCode);
    }
    http.end();
  }

  delay(5000);  // Kirim data setiap 20 detik
}