/* 
 
 Created by:- Yoga Pratama Pangestu
 
Libraries used:- 
1. Arduino Json
2. Firebase ESP32 Client

*/


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

// Insert your network credentials
#define WIFI_SSID "Wokwi-GUEST"           // your WiFi SSID
#define WIFI_PASSWORD ""             // your WiFi PASSWORD

#define LED1 13
#define LED2 14
#define LED3 33
#define LED4 32

// Insert Firebase project API Key
#define FIREBASE_AUTH "AIzaSyBBedwJY2scz2zlc2aBl43kqpBHfRCt3YA" 

// Insert RTDB URLefine the RTDB URL */
#define  FIREBASE_HOST "https://esp32-iot-a129f-default-rtdb.asia-southeast1.firebasedatabase.app/"  
 
// Declare the Firebase Data object in the global scope
FirebaseData firebaseData;

// Declare global variable to store value
String val= "example";
String val2= "example";
String val3= "example";
String val4= "example";


void setup() {
  // Select the same baud rate if you want to see the datas on Serial Monitor
  Serial.begin(115200); 
  // Set All led as output                                                     
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  
  Serial.println("Serial communication started\n\n");  
           
  //try to connect with wifi
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, 6);                                     
  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);
  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  //get status Connected OK/NO ?
  Serial.println();
  Serial.print("Connected to ");
  Serial.println(WIFI_SSID);
  Serial.print("IP Address is : ");
  Serial.println(WiFi.localIP());   //print local IP address
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);   // connect to firebase

  Firebase.reconnectWiFi(true);
  delay(1000);
}

void loop() {
// Firebase Error Handling And Reading Data From Specified Path ************************************************
  if (Firebase.getString(firebaseData, "/Device/s1")) {                           // On successful Read operation, function returns 1  
    Serial.println(firebaseData.dataType());
        val = firebaseData.stringData();
        if (val == "1"){
          Serial.println("s1 HIGH");
          digitalWrite(LED1, 1);
        }else{
          Serial.println("s1 low");
           digitalWrite(LED1, 0);
        }
        Serial.println(val);
        Serial.println("\n Change value at firebase console to see changes here."); 
        delay(1000);

  }
  if (Firebase.getString(firebaseData, "/Device/s2")) {                           // On successful Read operation, function returns 1  
    Serial.println(firebaseData.dataType());
        val2 = firebaseData.stringData();
        if (val2 == "1"){
          Serial.println("s2 HIGH");
          digitalWrite(LED2, 1);
        }else{
          Serial.println("s2 low");
           digitalWrite(LED2, 0);
        }
        Serial.println(val2);
        Serial.println("\n Change value at firebase console to see changes here."); 
        delay(1000);

  }
  if (Firebase.getString(firebaseData, "/Device/s3")) {                           // On successful Read operation, function returns 1  
    Serial.println(firebaseData.dataType());
        val3 = firebaseData.stringData();
        if (val3 == "1"){
          Serial.println("s3 HIGH");
          digitalWrite(LED3, 1);
        }else{
          Serial.println("s3 low");
           digitalWrite(LED3, 0);
        }
        Serial.println(val3);
        Serial.println("\n Change value at firebase console to see changes here."); 
        delay(1000);

  }
  if (Firebase.getString(firebaseData, "/Device/s4")) {                           // On successful Read operation, function returns 1  
    Serial.println(firebaseData.dataType());
        val4 = firebaseData.stringData();
        if (val4 == "1"){
          Serial.println("s4 HIGH");
          digitalWrite(LED4, 1);
        }else{
          Serial.println("s4 low");
           digitalWrite(LED4, 0);
        }
        Serial.println(val4);
        Serial.println("\n Change value at firebase console to see changes here."); 
        delay(1000);

  } else {
      Serial.println(firebaseData.errorReason());
  }
 }


/* NOTE:
 *  To read value, command is ===> Firebase.getInt(firebaseData, "path"); variable = firebaseData.intData();
 *  
 *  Example                   ===>  Firebase.setInt(firebaseData, "/data", val); val = firebaseData.intData();
 */