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

const char* ssid = "Wokwi-GUEST";
const char* password = "";

const String firebaseURL = "https://esp32-wokwi-demo-default-rtdb.firebaseio.com/led_status.json";
void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT);
  digitalWrite(2, LOW);

  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println(" Connected!");
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin(firebaseURL);
    int httpCode = http.GET();

    if (httpCode == 200) {
      String payload = http.getString();
      int status = payload.toInt();
      digitalWrite(2, status);
      Serial.println("LED: " + String(status));
    } else {
      Serial.println("Error reading Firebase");
    }
    http.end();
  }

  delay(2000); // 2 giây đọc 1 lần
}