remember login state, and check if user is logged in on page

src/main.java

@@ -1,5 +1,6 @@
 import db.jdcb;
 
+import java.io.IOException;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 
@@ -11,6 +12,17 @@ public class main {
         D.printList();
         */
 
+        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+            try {
+                Thread.sleep(200);
+                System.out.println("Shutting down ...");
+
+                //shutdown routine
+            }  catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }));
+
         Thread mythread = new Thread(() -> new website.Webserver().startserver());
         mythread.start();
 

src/website/CheckLoginState.java

@@ -0,0 +1,22 @@
+package website;
+
+import java.util.HashMap;
+
+public class CheckLoginState extends PostRequest {
+    @Override
+    public String request(HashMap<String, String> params) {
+        System.out.println("checkin login state");
+        if ((params.get("action")).equals("getloginstate")){
+            if (LoginState.getObject().isLoggedIn()){
+                return "{\"loggedin\":true, \"username\":\""+LoginState.getObject().getUsername()+"\"}";
+            }else {
+                return "{\"loggedin\":false}";
+            }
+        }else if ((params.get("action")).equals("logout")){
+            System.out.println("logging out");
+            LoginState.getObject().logOut();
+            return "{\"loggedin\":false}";
+        }
+        return "{\"loggedin\":false}";
+    }
+}

src/website/LoginRequest.java

@@ -22,6 +22,8 @@ public class LoginRequest extends PostRequest {
                 //success
                 if (HttpTools.StringToMD5(password).equals(s.getString("password"))) {
                     System.out.println("login success");
+                    LoginState.getObject().logIn();
+                    LoginState.getObject().setAccountData(username,"","","");
                     response = "{\"accept\": true}";
                 } else {
                     System.out.println("wrong password");

src/website/LoginState.java

@@ -0,0 +1,53 @@
+package website;
+
+public class LoginState {
+    private LoginState() {}
+
+   private static LoginState mythis=new LoginState();
+
+    public static LoginState getObject(){
+        return mythis;
+    }
+
+    String username;
+    String firstname;
+    String lastname;
+    String email;
+
+    boolean loggedin = false;
+
+    public void logIn(){
+        loggedin=true;
+    }
+
+    public void logOut(){
+        loggedin=false;
+    }
+
+    public void setAccountData(String username, String firstname, String lastname, String email){
+        this.username=username;
+        this.firstname=firstname;
+        this.lastname=lastname;
+        this.email=email;
+    }
+
+    public boolean isLoggedIn(){
+        return loggedin;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+}

src/website/RegisterRequest.java

@@ -14,7 +14,7 @@ public class RegisterRequest extends PostRequest{
         jdcb myjd = new jdcb("users", "kOpaIJUjkgb9ur6S", "wasteinformation");
         int s = myjd.executeUpdate("INSERT INTO `user` (`username`, `firstName`, `secondName`, `password`, `email`, `logindate`) VALUES ('"+params.get("username")+"', '"+params.get("firstname")+"', '"+params.get("lastname")+"', '"+passhash+"', '"+params.get("email")+"', current_timestamp());");
 
-
+        // TODO: 27.09.19 detect if register process was successful and reply right json
         return "{\"accept\": true}";
     }
 }

src/website/Webserver.java

@@ -19,6 +19,7 @@ public class Webserver {
         server.createContext("/", new MainPage());
         server.createContext("/senddata/loginget", new LoginRequest());
         server.createContext("/senddata/registerpost",new RegisterRequest());
+        server.createContext("/senddata/checkloginstate",new CheckLoginState());
 
         server.setExecutor(null); // creates a default executor
         server.start();

wwwroot/css/profile.css

@@ -0,0 +1,7 @@
+html,body{
+  background-image: url('../rsc/login2.jpg');
+  background-size: cover;
+  background-repeat: no-repeat;
+  height: 100%;
+  font-family: 'Numans', sans-serif;
+}

wwwroot/js/profile.js

@@ -0,0 +1,2 @@
+$(document).ready(function() {
+});

wwwroot/js/settings.js

@@ -1,3 +1,20 @@
 $(document).ready(function() {
-  console.log("hey from js");
+  //check login state
+  console.log("page loaded");
+  $.post('/senddata/checkloginstate','action=getloginstate',function(data){
+    console.log(data);
+    if (data.loggedin == true) {
+      $("#userlabel").html(" "+data.username);
+    }else{
+      $("#userlabel").html(" not logged in!!");
+    }
+  },'json');
+
+
+
+  $('#logoutbtn').click(function() {
+    $.post('/senddata/checkloginstate','action=logout',function(data){
+      console.log(data);
+    },'json');
+  });
 });

wwwroot/profile.html

@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<html lang="en" dir="ltr">
+<head>
+    <meta charset="utf-8">
+    <title></title>
+
+    <!-- Latest compiled and minified CSS -->
+    <link rel="stylesheet" href="lib/bootstrap.min.css">
+
+    <!--Fontawesome CDN-->
+    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
+
+
+    <!-- jQuery library -->
+    <script src="lib/jquery.min.js"></script>
+
+    <!-- Popper JS -->
+    <script src="lib/popper.min.js"></script>
+
+    <!-- Latest compiled JavaScript -->
+    <script src="lib/bootstrap.min.js"></script>
+
+
+    <link rel="stylesheet" type="text/css" href="css/profile.css">
+    <script type="text/javascript" src="js/profile.js"></script>
+</head>
+<body>
+<nav class="navbar navbar-expand-md navbar-dark bg-dark">
+    <div class="navbar-collapse collapse w-100 order-1 order-md-0 dual-collapse2">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item">
+              <a class="nav-link" href="settings.html">Settings</a>
+          </li>
+          <li class="nav-item active">
+              <a class="nav-link" href="profile.html">Profile</a>
+          </li>
+        </ul>
+    </div>
+    <div class="mx-auto order-0">
+        <a class="navbar-brand mx-auto" href="#">Profile</a>
+    </div>
+    <div class="navbar-collapse collapse w-100 order-3 dual-collapse2">
+        <ul class="navbar-nav ml-auto">
+            <div class="input-group-prepend">
+              <span class="input-group-text"><i class="fas fa-user"> lheilige</i></span>
+            </div>
+            <button type="button" class="btn btn-primary">Logout</button>
+        </ul>
+    </div>
+</nav>
+
+
+<div class="row">
+  <div class="col-lg-3">
+
+  </div>
+
+  <div class="col-lg-6">
+      <!-- .card -->
+      <div class="card card-fluid">
+          <h6 class="card-header"> Account Info</h6>
+          <!-- .card-body -->
+          <div class="card-body">
+              <!-- form -->
+              <form method="post">
+                  <!-- form row -->
+                  <div class="form-row">
+                      <!-- form column -->
+                      <div class="col-md-6 mb-3">
+                          <label for="input01">First Name</label>
+                          <input type="text" class="form-control" id="input01" value="Max" required=""></div>
+                      <!-- /form column -->
+                      <!-- form column -->
+                      <div class="col-md-6 mb-3">
+                          <label for="input02">Last Name</label>
+                          <input type="text" class="form-control" id="input02" value="Mustermann" required=""></div>
+                      <!-- /form column -->
+                  </div>
+                  <!-- /form row -->
+                  <!-- .form-group -->
+                  <div class="form-group">
+                      <label for="input03">Email</label>
+                      <input type="email" class="form-control" id="input03" value="Max@Musterman.com" required=""></div>
+                  <!-- /.form-group -->
+                  <!-- .form-group -->
+                  <div class="form-group">
+                      <label for="input04">New Password</label>
+                      <input type="password" class="form-control" id="input04" value="secret" required=""></div>
+                  <!-- /.form-group -->
+                  <!-- .form-group -->
+                  <div class="form-group">
+                      <label for="input05">Username</label>
+                      <input type="text" class="form-control" id="input05" value="bent10" required="">
+                  </div>
+                  <!-- /.form-group -->
+                  <hr>
+                  <!-- .form-actions -->
+                  <div class="form-actions">
+                      <!-- enable submit btn when user type their current password -->
+                      <input type="password" class="form-control ml-auto mr-3" id="input06"
+                             placeholder="Enter Current Password" required="">
+                      <button type="submit" class="btn btn-primary" disabled="">Update Account</button>
+                  </div>
+                  <!-- /.form-actions -->
+              </form>
+              <!-- /form -->
+          </div>
+          <!-- /.card-body -->
+      </div>
+      <!-- /.card -->
+  </div>
+
+  <div class="col-lg-3">
+
+  </div>
+</div>
+
+
+
+</body>
+</html>

wwwroot/settings.html

@@ -7,6 +7,10 @@
       <!-- Latest compiled and minified CSS -->
       <link rel="stylesheet" href="lib/bootstrap.min.css">
 
+      <!--Fontawesome CDN-->
+      <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
+
+
       <!-- jQuery library -->
       <script src="lib/jquery.min.js"></script>
 
@@ -21,23 +25,30 @@
       <script type="text/javascript" src="js/settings.js"> </script>
   </head>
   <body>
-  <!-- Grey with black text -->
+    <nav class="navbar navbar-expand-md navbar-dark bg-dark">
-  <nav class="navbar navbar-expand-sm bg-dark navbar-dark">
+        <div class="navbar-collapse collapse w-100 order-1 order-md-0 dual-collapse2">
-      <ul class="navbar-nav">
+            <ul class="navbar-nav mr-auto">
-          <li class="nav-item active">
+              <li class="nav-item active">
-              <a class="nav-link" href="#">Active</a>
+                  <a class="nav-link" href="settings.html">Settings</a>
-          </li>
+              </li>
-          <li class="nav-item">
+              <li class="nav-item">
-              <a class="nav-link" href="#">Link</a>
+                  <a class="nav-link" href="profile.html">Profile</a>
-          </li>
+              </li>
-          <li class="nav-item">
+            </ul>
-              <a class="nav-link" href="#">Link</a>
+        </div>
-          </li>
+        <div class="mx-auto order-0">
-          <li class="nav-item">
+            <a class="navbar-brand mx-auto" href="#">Profile</a>
-              <a class="nav-link disabled" href="#">Disabled</a>
+        </div>
-          </li>
+        <div class="navbar-collapse collapse w-100 order-3 dual-collapse2">
-      </ul>
+            <ul class="navbar-nav ml-auto">
-  </nav>
+                <div class="input-group-prepend">
+                  <span class="input-group-text"><i id="userlabel" class="fas fa-user"> lheilige</i></span>
+                </div>
+                <button type="button" id="logoutbtn" class="btn btn-primary">Logout</button>
+            </ul>
+        </div>
+    </nav>
+
   <div class="optionsarray">
     <div class="custom-control custom-switch">
         <input type="checkbox" class="custom-control-input" id="customSwitch1">