/*
  Make sure your Firebase project's '.read' and '.write' rules are set to 'true'. 
  Ignoring this will prevent the MCU from communicating with the database. 
  For more details- https://github.com/Rupakpoddar/ESP32Firebase 
*/

#include <ESP32Firebase.h>
#include <WiFi.h>

#define _SSID "Wokwi-GUEST"          // Your WiFi SSID
#define _PASSWORD ""      // Your WiFi Password
#define REFERENCE_URL "https://pnu-parking-default-rtdb.firebaseio.com/"  // Your Firebase project reference url

Firebase firebase(REFERENCE_URL);
const int PIR_SENSOR_OUTPUT_PIN = 12;
const int GreenLed=14;
const int RedLed=27;


void setup() {
  pinMode(PIR_SENSOR_OUTPUT_PIN, INPUT);
  Serial.begin(115200);
  pinMode(GreenLed, OUTPUT);
  pinMode(RedLed, OUTPUT);

  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(1000);

  // Connect to WiFi
  Serial.println();
  Serial.println();
  Serial.print("Connecting to: ");
  Serial.println(_SSID);
  WiFi.begin(_SSID, _PASSWORD);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print("-");
  }

  Serial.println("");
  Serial.println("WiFi Connected");

  // Print the IP address
  Serial.print("IP Address: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
}
int data1=0,sensor_output=0;
void loop() {

data1 = firebase.getInt("RESERVE/APP");
while(data1==0)
 {

 sensor_output = digitalRead(PIR_SENSOR_OUTPUT_PIN);
 if(sensor_output==LOW)
 {
  digitalWrite(GreenLed, HIGH);
  digitalWrite(RedLed, LOW);
  firebase.setInt("RESERVE/ESP", 1);
    Serial.print("LOW\n");

 }
 else
 {
  digitalWrite(GreenLed, LOW);
  digitalWrite(RedLed, HIGH);

  firebase.setInt("RESERVE/ESP", 0);
  Serial.print("HIGH\n");
 }
  data1 = firebase.getInt("RESERVE/APP");
  Serial.print("Received int:\t");
  Serial.println(data1);

  delay(100);
 }
while(data1==1)
{
  digitalWrite(GreenLed, LOW);
  digitalWrite(RedLed, HIGH);
  firebase.setInt("RESERVE/ESP", 0);
  data1 = firebase.getInt("RESERVE/APP");
  Serial.print("Received int:\t");
  sensor_output = digitalRead(PIR_SENSOR_OUTPUT_PIN);
  Serial.println(data1);
 if(sensor_output==LOW)
 {
  firebase.setInt("RESERVE/ESP2", 1);
    Serial.print("LOW\n");

 }
 else
 {

  firebase.setInt("RESERVE/ESP2", 0);
  Serial.print("HIGH\n");
 }




};




}