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<!DOCTYPE html>
<!--suppress ALL -->
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Lab 2</title>
</head>
<body>
<h2>Paragraph no: 1</h2>
<p id="users">

</p><br/>
<label>Enter new email: </label><input type="text" id="newEmail"><br/>
<button onclick="changeEmail()">Change Email</button>
<button onclick="showWinner()">Show Winner</button><br/><br/>
<p id="johnny"></p>
<p id="winner"></p>
</body>
<script>
    //1.1
    function all_properties(obj) {
        return Object.getOwnPropertyNames(obj);
    }
    console.log(all_properties(Array));

    //1.2
    function User(name, email) {
        this.Name = name;
        this.Email = email;
        this.QuizScores = new Array();
        this.CurrentScore = 0;
    }
    User.prototype.constructor=User;
    User.prototype.SaveScore=function (TheScoreToAdd) {
        this.QuizScores.push(TheScoreToAdd);
        this.CurrentScore=TheScoreToAdd;
    }
    User.prototype.showNameAndScores=function(){
        var result="Name "+this.Name+" Scores: ";
        if(this.QuizScores.length>0){
            for (var i in this.QuizScores){
                result+=this.QuizScores[i]+", ";
            }
        }
        else{
            result+="No scores yet";
        }
        return result;
    }
    User.prototype.ChangeEmail=function(novmail){
        this.email=novmail;
    }
    var u1 = new User("Michael", "michael6@gmail.com");
    u1.SaveScore(15);
    u1.SaveScore(10);

    var u2 = new User("Johnny", "johnny@gmail.com");
    u2.SaveScore(10);
    u2.SaveScore(15);
    u2.SaveScore(3);

    var u3 = new User("Elvis", "TheKing@gmail.com");
    var users=[u1, u2, u3];
    window.onload=function () {
        var users="";
        users+=u1.showNameAndScores()+"<br/>"+u2.showNameAndScores()+"<br/>"+u3.showNameAndScores()+"<br/>";
        document.getElementById("users").innerHTML=users;
    }

    function changeEmail() {
        u2.ChangeEmail(document.getElementById('newEmail').textContent);
        document.getElementById('johnny').innerHTML="Johnny’s new email address is "+u2.Email;
    }

    function showWinner() {
        var maxPoints=0;
        var winner=null;
        for(var i in users){
            var currentScore=0;
            for(j in users[i].QuizScores){
                currentScore+=users[i].QuizScores[j];
            }
            if(currentScore>maxPoints){
                maxPoints=currentScore;
                winner=users[i];
            }
        }
        document.getElementById('winner').innerHTML="The winner is "+winner.Name+" with "+maxPoints+" points";

    }
</script>
</html>