#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP8266WiFi.h> //Library Wifi
#include <ESP8266WebServer.h> //Library Webserver
#include <ESP8266HTTPClient.h> //Library HTTP
#include <WiFiClientSecure.h> //LibraryWifi Secure
#define echoPin D8
#define trigPin D9

const int ledPin = 13;
LiquidCrystal_I2C lcd(0x27, 16,2);
WiFiClientSecure client; //Variabel client untuk koneksi dari client

const char *ssid = "yourssid"; //SSID dari WIFI
const char *password = "yourpass"; //Password dari WIFI
const char *host = "yourhost"; //IP atau link
long duration, distance;
int sensorCounter = 0;
int lastsensorDistance = 0;
int setCounter = 40;
int incomingByte;

void setup() {
 Serial.begin (115200);
  SPI.begin();
  WiFi.mode(WIFI_OFF);        //Prevents reconnection issue (taking too long to connect)
  delay(1000);
  WiFi.mode(WIFI_STA);        //This line hides the viewing of ESP as wifi hotspot

  WiFi.begin(ssid, password);     //Connect to your WiFi router
  Serial.println("");

  Serial.print("Connecting");
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
 //If connection successful show IP address in serial monitor
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());  //IP address assigned to your ESP
}

pinMode(trigPin, OUTPUT);
lcd.begin();
lcd.backlight();
lcd.setCursor(0,0);
lcd.print("Welcome To");
lcd.setCursor(0,1);
lcd.print("My Project");
delay(1000);
lcd.clear();
 pinMode(echoPin, INPUT);
pinMode(ledPin, OUTPUT);
}

void loop() {

  if (Serial.available() > 0) {
  incomingByte = Serial.read();
  if (incomingByte == 'R') {
      Serial.println("Reset");
      sensorCounter = 20;

    }
  }

 digitalWrite(trigPin, LOW);
 delayMicroseconds(2);

 digitalWrite(trigPin, HIGH);
 delayMicroseconds(10);

 digitalWrite(trigPin, LOW);
 duration = pulseIn(echoPin, HIGH);

 //Calculate the distance (in cm) based on the speed of sound.
 distance = duration/58.2;

 if (distance <= 20 && lastsensorDistance >= 40){
      sensorCounter++;
    Serial.print("number of counts:  ");
    lcd.setCursor(0,0);
    lcd.print("Jmlh Pengunjung");
    lcd.setCursor(0,1);
    lcd.print(sensorCounter);
    Serial.println(sensorCounter);
   Serial.println(distance);
   }

 else {

  //Serial.println("off");   not needed.
  }
  lastsensorDistance = distance;
  delay(500);

   // turns on the LED when counter is at setCounter
  if (sensorCounter >= setCounter) {
    digitalWrite(ledPin, HIGH);
    lcd.setCursor(0,0);
    lcd.print("Para Pengunjung");
    lcd.setCursor(0,1);
    lcd.print("Kepenuhan");
  } else {
   digitalWrite(ledPin, LOW);
  }

HTTPClient http;
String ADCData, ADCData1, ADCData2, ADCData3, getData, Link;

  int adcvalue3 = data;  //Value yang diingin dikirim
  ADCData3 = String(adcvalue3);   //String to interger conversion

 //GET Data
  getData = "?request=" + ADCData  ;  // "?Request" diganti dengan perintah yang diinginkan
  Link = "http://192.168.43.72/insert.php" + getData; //Bagian ip dan php sesuaikan

  http.begin(Link);     //Specify request destination

  int httpCode = http.GET();            //Send the request
  String payload = http.getString();    //Get the response payload

  Serial.println(httpCode);   //Print HTTP return code
  Serial.println(payload);    //Print request response payload
  Serial.println("Terkirim");
  rfid.halt();
  http.end();
}
    //Close connection
  delay(1000);  //GET Data at every 1 seconds

}
}