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

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
  
#define DATABASE_URL "https://offroad-rc-default-rtdb.asia-southeast1.firebasedatabase.app/.json"
HTTPClient client;
  
bool lampu = false;

#define BUTTON 2 // ESP32 GPIO16 pin connected to button's pin
#define BUZZER 4 // ESP32 GPIO21 pin connected to Buzzer's pin

void status(){
// Meminta Realtime Database Firebase untuk menerima masukan
  int httpResponseCode = client.GET();
  String payload = "";

  if (httpResponseCode > 0) {
    payload = client.getString();
  }

  // Mengidentifikasi variabel output yang dimaksud untuk menerima input dari flutter
  DynamicJsonDocument doc(1024);
  deserializeJson(doc, payload);
  lampu = doc["Status"]["Lampu"];
}

void setup() 
{              
  Serial.begin(115200);

  WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  
  Serial.println();
  Serial.print("Connected to WiFi: ");
  Serial.println(WiFi.localIP());

  // Memulai pembacaan URL Firebase untuk mulai menerima input
  client.begin(DATABASE_URL);

  pinMode(BUTTON, INPUT_PULLUP); // set ESP32 pin to input pull-up mode
  pinMode(BUZZER, OUTPUT);       // set ESP32 pin to output mode
}

void loop()
{
  status()
  int buttonState = digitalRead(BUTTON); // read new state

  if(lampu){
  if (buttonState == LOW) 
  {
    digitalWrite(BUZZER, HIGH); // turn on
  }
  else if (buttonState == HIGH) {
    digitalWrite(BUZZER, LOW);  // turn off
  }
  }
}