// ==UserScript==
// @name         Moodle++
// @namespace    http://e-cfisd.hcde-texas.org/
// @version      0.1
// @description  dark
// @author       Archer Calder
// @match        http://e-cfisd.hcde-texas.org/mod/quiz/view.php?id=726954
// @require http://code.jquery.com/jquery-3.4.1.min.js
// @require https://cdn.jsdelivr.net/npm/chart.js@2.8.0
// @grant        none
// ==/UserScript==

(function() {
    'use strict';


    var numOfZeros = 0;
    var numOfTwenties = 0;
    var numOfFourties = 0;
    var numOfSixties = 0;
    var numOfEighties = 0;
    var numOfHundreds = 0;
    var allQuizzes = $("td");

    $("td").each(function(index) {
        if ($(this).hasClass("cell c3")) {
            if ($(this).text() == "0") {
                numOfZeros++;
            }
            if ($(this).text() == "20") {
                numOfTwenties++;
            }
            if ($(this).text() == "40") {
                numOfFourties++;
            }
            if ($(this).text() == "60") {
                numOfSixties++;
            }
            if ($(this).text() == "80") {
                numOfEighties++;
            }
            if ($(this).text() == "100") {
                numOfHundreds++;
            }
        }
    });


    $(".box.generalbox").append('<center><h3><b>'.concat(allQuizzes.length,'</b> Total Quizzes</h3></center><center><p style="padding-bottom: 10px;">Average grade: ',Math.ceil((numOfTwenties+numOfFourties*2+numOfSixties*3+numOfEighties*4+numOfHundreds*5)/(numOfTwenties+numOfFourties+numOfSixties+numOfEighties+numOfHundreds)),'</p></center><canvas id="myChart"></canvas>'));

    var ctx = document.getElementById('myChart');
    var myChart = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ['Zeros', 'Ones', 'Twos', 'Threes', 'Fours', 'Fives'],
            datasets: [{
                label: 'Amount of quizzes',
                data: [numOfZeros, numOfTwenties, numOfFourties, numOfSixties, numOfEighties, numOfHundreds],
                backgroundColor: [
                    'rgba(255, 99, 132, 0.2)',
                    'rgba(54, 162, 235, 0.2)',
                    'rgba(255, 206, 86, 0.2)',
                    'rgba(75, 192, 192, 0.2)',
                    'rgba(153, 102, 255, 0.2)',
                    'rgba(255, 159, 64, 0.2)'
                ],
                borderColor: [
                    'rgba(255, 99, 132, 1)',
                    'rgba(54, 162, 235, 1)',
                    'rgba(255, 206, 86, 1)',
                    'rgba(75, 192, 192, 1)',
                    'rgba(153, 102, 255, 1)',
                    'rgba(255, 159, 64, 1)'
                ],
                borderWidth: 1
            }]
        },
        options: {
            scales: {
                yAxes: [{
                    ticks: {
                        beginAtZero: true
                    }
                }]
            }
        }
    });
    $(".box").append("Moodle++ made by Archer Calder");
})();