#include<WiFi.h>
#include<WebServer.h>

const char* ssid="Galaxy F41F165";
const char* password="hardikchadha";

WebServer server(80);

#define LED 2
#define PIR 3 

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(LED,OUTPUT);
  pinMode(PIR,INPUT);
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting...");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());


  String page;
  server.on("/",[](){
    page="<h1>PIR Sensor to NodeMCU</h1><h1>Data:</h1> <h1 id=\"data\">""</h1>\r\n";
    page+="<script>\r\n";
    page+="var x=setInterval(function(){loadData(\"data.txt\",updateData)},1000);\r\n";
    page+="function loadData(url,callback){\r\n";
    page+="var xhttp = new XMLHttpRequest();\r\n";
    page+="xhttp.onreadystatechange = function(){\r\n";
    page+=" if(this.readyState == 4 && this.status == 200){\r\n";
    page+=" callback.apply(xhttp);\r\n";
    page+=" }\r\n";
    page+="};\r\n";
    page+="xhttp.open(\"GET\",url,true);\r\n";
    page+="xhttp.send();\r\n";
    page+="}\r\n";
    page+="function updateData(){\r\n";
    page+=" document.getElementById(\"data\").innerHTML = this.responseText;\r\n";
    page+="}\r\n";
    page+="</script>\r\n";
    server.send(200, "text/html",page);
  });

  server.on("/pir", [](){
    server.send(200, "text/plain", String(digitalRead(PIR)));
  });

  server.begin();

  Serial.println("HTTP server started");

}

void loop() {
  server.handleClient();
  delay(10);
}