var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var path = require('path');
var DIST_DIR = path.join(__dirname, "bin");
var express = require('express');

//Getting session store
var session = require('express-session');
var cookieParser = require('cookie-parser');
var sessionStore = new session.MemoryStore();
var handshakeData ={};
var cookie = require('cookie');

//Importing routes
 var login = require('./routes/login.js');
 var registration = require('./routes/registration.js');
 var home = require('./routes/home.js');


//Getting cookies from request header. so that from it we can get sessionid.
io.use(function(socket, next) {

  handshakeData = socket.request;
  var cookies = cookie.parse(handshakeData.headers.cookie);

//Bringing sessionid and storing in a global variable
console.log("***********************Server*********************");
console.log("");
console.log('All cookies parsed in io.use ( %s )', JSON.stringify(cookies));
handshakeData.sessionID = cookies['connect.sid'].split('.')[0].split(':'[1];
console.log('All cookies parsed at server ( %s )', JSON.stringify(cookies));
console.log('Session id at server cookie value in io.use( %s )',
JSON.stringify(handshakeData.sessionID));
next();
});

//Bringing session data by sending "sessionid" to sessionStore
(MemoryStore)place
io.on('connection', function(socket){

  sessionStore.get(handshakeData.sessionID, function (err, session) {
            handshakeData.session = session;

            //Now we can retrieve all session data. But sessionID sent was
not correct

    });

console.log('user connected');
socket.on('new message', function(msg){
console.log('Server recieved new message: '+msg);
io.emit('new message', msg);
});
socket.on('disconnect', function(){
console.log('user disconnected');
});
});

app.use('/', login);
app.use('/registration', registration);
app.use('/home', home);


http.listen(8080, function(){
console.log("listening on port 8080");
});

var bodyParser = require('body-parser');
var urlencodedParser = bodyParser.urlencoded({ extended: false })
var cookieParser = require('cookie-parser');
var session = require('express-session');
var sessionStore = new session.MemoryStore();
var login_success = 0;

router.use(cookieParser());

router.use(session({ cookie: {
    maxAge  : 24*60*60*1000
 },
  store: sessionStore,
  saveUninitialized: true,
  resave: true,
  secret: '1234567890QWERT'
  }));

router.get('/', function(req, res){

  console.log("Actual session id before login: "+ req.sessionID);
//Clearing cookies at client side.
    res.clearCookie("login_message");
    res.clearCookie("connect.sid");
    res.clearCookie("io");
    res.clearCookie("user_name");
    res.clearCookie("user_id");


if (login_success == 2)
  {
     res.cookie('login_message', 'incorrectCredentials');
     login_success = 0;
  }

  res.sendFile(path.join(SRC_DIR,"login.html"));
 // res.sendFile(path.join(__dirname, '../bin', 'login.html'));

});





router.post('/', urlencodedParser, function(req, res){


console.log("database called");

//Fetching form data
   var username = req.body.loginusername;
   var password  = req.body.loginpassword;


 //Connection string to datanbase
   var MongoClient = require('mongodb').MongoClient;
   var url = "mongodb://localhost:27017/WebChat";

 //Comparing username and password.
   MongoClient.connect(url, function(err, db) {
       if (err) throw err;
       var query = { email: username, password: password };
       db.collection("Profile").find(query).toArray(function(err, result) {
          if (err) throw err;
          console.log(result);
          db.close();
          if (result.length != 0)
          {
              console.log("login success");
              login_success = 1;

              //Setting session variables
              req.session.userid = username;
              req.session.username= result[0].firstname;

              console.log("***********************Login*********************");
              console.log("");

              console.log("Actual session id at login: "+ req.sessionID);
              console.log("Session userid at server set to :"+ req.session.userid);
              console.log("Session name at server set to :"+ req.session.username);

              //res.sendFile(path.join(SRC_DIR,"home.html"));
              //  res.status(200).send(req.session);

                   console.log("Session reload called");
                   res.redirect('/home');

          }
          else
          {

              //**It is for when user come to login page with entering wrong credentials
              login_success = 2;
              console.log("login failed");
              res.redirect('http://localhost:8080');

          }


        });
    });

//export this router to use in our server.js
module.exports = router;

var express = require('express');
var router = express.Router();
var path = require("path");
var SRC_DIR=path.join(__dirname, "../src/views");

var session = require('express-session');
 cookie = require('cookie');
var cookieParser = require('cookie-parser');
var sessionStore = new session.MemoryStore();
var handshakeData ={};

router.use(cookieParser());


router.use(session({ cookie: {
    maxAge  : 24*60*60*1000
  },
  store: sessionStore,
  saveUninitialized: true,
  resave: true,
  secret: '1234567890QWERT'
  }));



router.get('/', function(req, res){


 //setting cookie at client side
  res.clearCookie("user_id");
  res.clearCookie("user_name");

  res.cookie('user_id', req.session.userid);
  res.cookie('user_name', req.session.username);


 // res.status(200).send(req.session);
  console.log(" session reload called");
  setTimeout(function(){
  res.sendFile(path.join(SRC_DIR,"home.html"));
  }, 5000);

  console.log("***********************Home*********************");
  console.log("");
  console.log("Actual session id at home: "+ req.sessionID);
  console.log("Cookie userid at client set to :"+ req.session.userid);
  console.log("Cookie username at client set to :"+ req.session.username);


});


//export this router to use in our server.js
module.exports = router;

class Home extends React.Component {

constructor(props) {
super(props);
this.state = {messages: [],socket: io.connect('http://localhost:8080')};
this.send = this.send.bind(this)

  }
}
export default Home