#include <WiFi.h>
#include <FirebaseESP32.h>


/* 2. Define the API Key */
#define API_KEY "AIzaSyDR3xRTb3sXP-gYFYCWJjoP7quFXMir4HQ"

/* 3. Define the RTDB URL */
#define DATABASE_URL "https://freertos-mpu6050-default-rtdb.asia-southeast1.firebasedatabase.app/" 

/* 4. Define the user Email and password that alreadey registerd or added in your project */
#define USER_EMAIL "[email protected]"
#define USER_PASSWORD "huy123"

// Define Firebase Data object
FirebaseData fbdo;

FirebaseAuth auth;
FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;

const int ledPin = 5;


void setup() {
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);

  Serial.begin(115200);
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

    /* Assign the api key (required) */
  config.api_key = API_KEY;

  /* Assign the user sign in credentials */
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;

  /* Assign the RTDB URL (required) */
  config.database_url = DATABASE_URL;

  // Comment or pass false value when WiFi reconnection will control by your code or third party library e.g. WiFiManager
  Firebase.reconnectNetwork(true);

  // Since v4.4.x, BearSSL engine was used, the SSL buffer need to be set.
  // Large data transmission may require larger RX buffer, otherwise connection issue or data read time out can be occurred.
  fbdo.setBSSLBufferSize(4096 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);

  // Limit the size of response payload to be collected in FirebaseData
  fbdo.setResponseSize(2048);

  Firebase.begin(&config, &auth);

  Firebase.setDoubleDigits(5);

  config.timeout.serverResponse = 10 * 1000;
}

void loop()
{
  // Firebase.ready() should be called repeatedly to handle authentication tasks.
  if (Firebase.ready() && (millis() - sendDataPrevMillis > 1000 || sendDataPrevMillis == 0))
  {
    sendDataPrevMillis = millis();

    int ledState;
    if (Firebase.getInt(&fbdo, "/led/state", &ledState)) {
      digitalWrite(ledPin, ledState);
    } else {
      Serial.println(fbdo.errorReason().c_str());
    }
  }
}