ScoreHandling

function saveScoreToCookie()
{
    var scores = getAllScores();

    //set a new cookie with the same name as the previous cookie
    //which means that it overwrites the previous cookie
    //the value will be the previous values + the new value
    document.cookie = "sudokuScores=" + scores + sudokuScore + ",;";
}

function scoresToInt(scores)
{
    var intScores = [];

    scores = scores.split(",");

    for (var i = 0; i < scores.length - 1; i++)
    {
        intScores[i] = parseInt(scores[i]);
    }

    return intScores;
}

function getAllScores()
{
    var scoresCookie = getCookie("sudokuScores");

    //split the cookie
    //scoresCookie[0] is cookie name
    //scoresCookie[1] is the current value
    var scores = scoresCookie.split("=")[1];

    return scores;
}

function getCookie(name)
{
    //get all current cookies
    var allCookies = document.cookie;
    //split the cookies into an array with ; as the delimiter
    var allCookiesArray = allCookies.split(";");

    var searchedCookie;
    //iterate through the cookies array
    for (var i = 0; i < allCookiesArray.length; i++)
    {
        //if the currently iterated cookies name is sudokuScores
        if (allCookiesArray[i].indexOf(name) > -1)
        {
            //set currentCookies to only the sudokuScores cookie
            searchedCookie = allCookiesArray[i];
            break;
        }
    }

    return searchedCookie;
}

function printScoresGraph(scores){
    var scores = getAllScores();

    scores = scoresToInt(scores);

        var trace = {
            x: scores.length,
            y: scores,
            mode: 'lines+markers',
            type: 'scatter'
        };

        var data = [trace];

        Plotly.newPlot('myDiv', data);
}