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

// Provide the token generation process info.
#include <addons/TokenHelper.h>

// Provide the RTDB payload printing info and other helper functions.
#include <addons/RTDBHelper.h>

/* 1. Define the WiFi credentials */
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""

// For the following credentials, see examples/Authentications/SignInAsUser/EmailPassword/EmailPassword.ino

/* 2. Define the API Key */
#define API_KEY "AIzaSyCFBh9D9XojMxweuyie4ZD4k2FUUCX1QH4"

/* 3. Define the RTDB URL */
#define DATABASE_URL "mytests-3f9e3-default-rtdb.firebaseio.com" //<databaseName>.firebaseio.com or <databaseName>.<region>.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 "12345678"

// Define Firebase Data object
FirebaseData stream;
FirebaseData fbdo;

FirebaseAuth auth;
FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;

int count = 0;

String chipId = "998877";
String deviceIndex = "0";
String streamPath = "/"+chipId+"/data";
void streamCallback(StreamData data)
{
  Serial.printf("sream path, %s\nevent path, %s\ndata type, %s\nevent type, %s\n\n",
                data.streamPath().c_str(),
                data.dataPath().c_str(),
                data.dataType().c_str(),
                data.eventType().c_str());
  printResult(data); // see addons/RTDBHelper.h
  Serial.println();

  // This is the size of stream payload received (current and max value)
  // Max payload size is the payload size under the stream path since the stream connected
  // and read once and will not update until stream reconnection takes place.
  // This max value will be zero as no payload received in case of ESP8266 which
  // BearSSL reserved Rx buffer size is less than the actual stream payload.
  Serial.printf("Received stream payload size: %d (Max. %d)\n\n", data.payloadLength(), data.maxPayloadLength());
}

void streamTimeoutCallback(bool timeout)
{
  if (timeout)
    Serial.println("stream timed out, resuming...\n");

  if (!stream.httpConnected())
    Serial.printf("error code: %d, reason: %s\n\n", stream.httpCode(), stream.errorReason().c_str());
}

void setup()
{

  Serial.begin(115200);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(300);
  }
  Serial.println();
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  Serial.printf("Firebase Client v%s\n\n", FIREBASE_CLIENT_VERSION);

  /* 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;

  /* Assign the callback function for the long running token generation task */
  config.token_status_callback = tokenStatusCallback; // see addons/TokenHelper.h

  // 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(2048 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);
  stream.setBSSLBufferSize(2048 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);



  Firebase.begin(&config, &auth);


  stream.keepAlive(5, 5, 1);

  if (!Firebase.beginStream(stream,streamPath.c_str()))
    Serial.printf("sream begin error, %s\n\n", stream.errorReason().c_str());

  Firebase.setStreamCallback(stream, streamCallback, streamTimeoutCallback);


}

void loop()
{

  // Firebase.ready() should be called repeatedly to handle authentication tasks.

  // if (Firebase.ready() && (millis() - sendDataPrevMillis > 15000 || sendDataPrevMillis == 0))
  // {
  //   sendDataPrevMillis = millis();
  //   count++;
  //   FirebaseJson json;
  //   json.add("data", "hello");
  //   json.add("num", count);
  //   Serial.printf("Set json... %s\n\n", Firebase.setJSON(fbdo, "/test/stream/data/json", json) ? "ok" : fbdo.errorReason().c_str());
  // }

  // After calling stream.keepAlive, now we can track the server connecting status
  if (!stream.httpConnected())
  {
    // Server was disconnected!
  }
}