#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>

// Set these to run example.
#define FIREBASE_HOST "**"
#define FIREBASE_AUTH "***"
#define WIFI_SSID "***"
#define WIFI_PASSWORD "****"
#define UID "abc"
#define url "/users/abc/devices"


FirebaseArduino FirebaseStream;

void setup() {
  Serial.begin(9600);

  // connect to wifi.
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Connecting to wifi");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("connected: ");
  Serial.println(WiFi.localIP());
  
  

  FirebaseStream.begin(FIREBASE_HOST, FIREBASE_AUTH);
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
  FirebaseStream.stream(url); 
  
}

int n;
void loop() {

  Serial.println("loop");
  Firebase.setInt("data", n++);
  
  if (FirebaseStream.failed()) {
    Serial.println("streaming error");
    Serial.println(FirebaseStream.error());
  }

  if (FirebaseStream.available()) {
     FirebaseObject event = FirebaseStream.readEvent();
     String eventType = event.getString("type");
     eventType.toLowerCase();
            
     if (eventType == "put") {
     //  message = state ? "Device now is On": "Devive now is off";
       JsonVariant json = event.getJsonVariant();
       
       String path = json["path"].asString();
       if (path != "/"){
        // first loading seem it load all the devices. So we dont need it 
         Serial.println("");
         json.printTo(Serial);

         // if data: TRUE this mean device status change in this case we only take care when device status change.
         
          
         Serial.println(event.getBool("data"));
         String message = event.getBool("data") ? "Device is on now" : "Devive is off now";

         Serial.println("Sending message to server.");

         //Firebase.setString("message", "hello world");
         delay(1000);
         
        // If data: Null this mean device just deleted see screenshot: http://cloud.tabvn.com/rax3i8.png 

        // Else String or object  (this could be adding new item or update device title .... 
         
       }
       
   
     }
  } 

  
}