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DeuS7 / Reshu-ege extension

// ==UserScript==
// @license      MIT
// @name         Reshu-ege extension
// @namespace    http://tampermonkey.net/
// @version      0.7.8
// @description  Adds useful stuff to the site
// @author       You
// @include      https://*ege.sdamgia.ru/test?id=*
// @include      https://*vpr.sdamgia.ru/test?id=*
// @grant        none
// ==/UserScript==

//(function() {

    var timer;
    window.fieldsNodes = [];
    var areHiddenFields = true;

//CreatedByDeuS7

// Служебные функции

function getRandomArbitrary(min, max) {
    return Math.round(Math.random() * (max - min) + min);
}

/*function toggleAnswers(status) {
    var ans = document.getElementsByClassName("answerButton");
    var controlButton = document.getElementById("showAnswersButton");
    if (status == false) {
        for (var i = 0;i<ans.length;i++) {
            ans[i].style.display = "inline-block";
        }
        controlButton.classList.add("activeControlButton");
    } else {
        for (var i = 0;i<ans.length;i++) {
            ans[i].style.display = "none";
        }
        controlButton.classList.remove("activeControlButton");
    }
    return !status;
}*/

function isNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}

function sanitizeAnswers(str) {
    if (str.indexOf("|") != -1) {
        return str.split("|")[0];
    }
    return str.trim();
}

function refreshBar() {
    var bar = document.getElementById("progressBar");
    var fields = document.querySelectorAll("input[name^='answer']");
    var completedTasks = 0;
    for (var i = 0;i<fields.length;i++) {
        if (fields[i].value != "") completedTasks++;
    }
    bar.style.width = completedTasks/fields.length*100 + "%";
}

function evaluatorFunc(node) {
    node.value = evaluate(node.value);
}

function replaceComas(elem) {
    elem.value = elem.value.replace(/\./ig, ",");
}

function evaluate(str) {
    str = str.replace(/\,/ig, ".");
    try {
        return eval(str).toString().replace(/\./ig, ",") || str.replace(/\./ig, ",");
    } catch(e) {
        return str.replace(/\./ig, ",");
    }
}
//Функции контроля

function toggleTimer(status) {
    if (status == true) {
        ticker = window.setInterval(tick,1000);
        document.getElementById("stopTimeButton").classList.remove("activeControlButton");
    } else {
        clearInterval(ticker);
        document.getElementById("stopTimeButton").classList.add("activeControlButton");
    }
    return !status;
}

function createTheAnswers() {
    var adress = "https://" + window.location.hostname + "/problem?id=";
    var fields = document.querySelectorAll("input[name^='answer']");
    for (var i = 0;i<fields.length;i++) {
        var a = document.createElement("a");
        a.className = "answerButton";
        a.innerHTML = "Show the Answer";

        a.href = adress + fields[i].getAttribute("name").split("_").pop().replace(/[^0-9]/gi, "");
        a.target = "_blank";

        fields[i].parentNode.insertBefore(a, fields[i].nextSibling);
    }
}


function submit_form(){
    if (sent != 0){
        return;
    }
    sent = 1;
    var f = $('<form method="post" action="/test" style="display:none"></form>');
    $('.test_inp').clone().appendTo(f);
    $('body').append(f);
    f[0].submit();
}

function createProgressBar() {
    document.body.innerHTML += '<div id="progressBar"></div>';

    var fields = document.querySelectorAll("input[name^='answer']");
    for (var i = 0;i<fields.length;i++) {
        fields[i].addEventListener('blur', function() {
            refreshBar();
        });
    }
}


function goToTop() {
    var tasks = document.getElementsByClassName("prob_num");
    $('html, body').animate({ scrollTop: $(tasks[0]).offset().top }, 800);
}

function goToBottom() {
    var tasks = document.getElementsByClassName("prob_num");
    $('html, body').animate({ scrollTop: $(tasks[tasks.length - 1]).offset().top }, 800);
}

function toggleAutoSender(status) {
	var senderButton = document.getElementById("setAutoSending");

	if (status) {
		clearTimeout(timer);
	} else {
		var time = getRandomArbitrary(1500, 2400);
		console.log(time);
		timer = setTimeout(function() {
			submit_form();
		}, time*1000);
	}

	senderButton.classList.toggle("activeControlButton");

	return !status;
}



function toggleEvaluator(status) {

    var fields = document.querySelectorAll("input[name^='answer']");

    if (status) {

        for (let i = 0;i<fields.length;i++) {
            fields[i].onblur = null;
        }
        document.getElementById("evaluateOn").classList.remove("activeControlButton");

    } else {

        for (let i = 0;i<fields.length;i++) {
            fields[i].onblur = function() {
                fields[i].value = evaluate(fields[i].value);
            }
        }
        document.getElementById("evaluateOn").classList.add("activeControlButton");

    }

    return !status;
}
//Инициализация классов и контроллирующих элементов

function createStyles() {
    var style = document.createElement('style');
    style.type = 'text/css';
    style.innerHTML += '.answerButton { padding: 7px 23px; border: 4px solid  #4060ED;  display: inline-block; font-size: 13px; border-radius: 7px; font-weight: bold; cursor: pointer; transition: .3s; color: #4060ED; transition: .3s; margin-left: 15px; display: none; vertical-align: bottom; text-decoration: none; } \n';
    style.innerHTML += '.answerButton:hover { background: #4060ED; color: white; }';
    style.innerHTML += '.activeControlButton { background: #4060ED; color: white !important; }';
    style.innerHTML += '.controlPanel{ width: 60px; position: fixed; border: 3px solid #4060ED; top: 50%; transform: translateY(-50%); left: 0; z-index: 999999;} \n';
    style.innerHTML += '.controlButton{ height: 60px; line-height: 60px; font-size: 35px; color: #4060ED; text-align: center; transition: .3s; cursor: pointer; margin: 0; user-select: none;} \n';
    style.innerHTML += '.controlButton:hover { color: white; background: #4060ED; } \n';
    style.innerHTML += '.controlButtonInactive { cursor: no-drop; opacity: .5;} \n';
    style.innerHTML += '#progressBar { height: 5px; position: fixed; top: 0; left: 0; background: #4060ED; transition: .3s; width: 0; margin: 0; z-index: 999999; } \n';
    style.innerHTML += '@keyframes bounceAnim { 0% { background: #4060ED; color: white; } 50% { transform: scale(1.4);} } \n';
    style.innerHTML += '.animatedControlButton { animation-name: bounceAnim; animation-duration: .5s; animation-iteration-count: 2; } \n';
    style.innerHTML += '.alertState { box-shadow: 0 0 20px 4px red !important; } \n';
    style.innerHTML += '.undefinedState { box-shadow: 0 0 20px 4px grey !important; } \n';
    style.innerHTML += '.correctState { box-shadow: 0 0 20px 4px #21ff00 !important; } \n';

    document.getElementsByTagName('head')[0].appendChild(style);
}
function createButtons() {

    var buttons = [
    {id : "toUpArrow", title: "Пролистать к верху работы.", content : "&#9650;" },
    {id : "evaluateOn", title: "Включить автоматическое вычисление выражений", content : "&#8721;" },
    //{id : "showAnswersButton", title: "Показать кнопки ответов", content : "&#198;" },
    {id : "showAllAnswers", title: "Показать ответы. (Нужно отрпавить работу, учителю она не придет).", content : "&#9888;" },
    {id : "setAutoSending", title: "Настроить автоматическую отправку работы", content : "TS" },
    {id : "stopTimeButton", title: "Останавливает таймер, предотвращая преждевременную отправку работ.", content : "&#128336" },
    {id : "sendWorkButton", title: "Отправить работу.", content : "&#9993;" },
    {id : "toBottomArrow", title: "Пролистать к низу работы.", content : "&#9660;" }
    ];

    var delay = 10;
    var delayDiff = 0.1;

    var panel = document.createElement("div");
    panel.className += "controlPanel";

    for (var i = 0;i<buttons.length;i++) {
        var button = document.createElement("div");

        button.className = "controlButton";
        button.className += " animatedControlButton";
        button.style.animationDelay = delay + "s";
        button.style.position = "relative";

        button.id = buttons[i].id;
        button.title = buttons[i].title;
        button.innerHTML += buttons[i].content;

        panel.appendChild(button);

        delay += delayDiff;
    }

    document.body.appendChild(panel);
}

function fixFields() {
    var fields = document.querySelectorAll("input[name^='answer']");

    for (let i = 0;i<fields.length;i++) {
        fields[i].onchange = replaceComas.bind(null, fields[i]);
    }
}

//Главный инициализирующий элемент

(function() {
   // var areAnswersShown = false;
   var isTimerStopped = false;
   //var areFieldsFilled = false;
   var isWorkChecked = false;
   var isEvaluatorTurnedOn = false;
   var isAutoSenderOn = false;


   createStyles();
   createButtons();
   createTheAnswers();
   createProgressBar();
   fixFields();
   initHiddenFields();

    document.getElementById("stopTimeButton").onclick = function() {
        isTimerStopped = toggleTimer(isTimerStopped);
    }
    document.getElementById("sendWorkButton").onclick = function() {
        submit_form();
    }
    document.getElementById("showAllAnswers").onclick = function() {
        toggleHiddenFields();
    }
    document.getElementById("toUpArrow").onclick = function() {
        goToTop();
    }
    document.getElementById("toBottomArrow").onclick = function() {
        goToBottom();
    }
    document.getElementById("evaluateOn").onclick = function() {
        isEvaluatorTurnedOn = toggleEvaluator(isEvaluatorTurnedOn);
    }
    document.getElementById("setAutoSending").onclick = function() {
    	isAutoSenderOn = toggleAutoSender(isAutoSenderOn);
    }
})();



function initHiddenFields() {
    try {
        var nosols = document.querySelector("input[name='nosols']").cloneNode();
    } catch(e) {
        var nosols = document.createElement("div");
        nosols.id = 'dummy';
    }
    var stat_id = document.querySelector("input[name='stat_id']").cloneNode();
    var test_id = document.querySelector("input[name='test_id']").cloneNode();
    fieldsNodes.push(nosols);
    fieldsNodes.push(stat_id);
    fieldsNodes.push(test_id);
}

function toggleHiddenFields() {
    if (areHiddenFields) {
        try {
            document.querySelector("input[name='nosols']").remove();
        } catch(e) {

        }
       document.querySelector("input[name='stat_id']").remove();
       document.querySelector("input[name='test_id']").remove();
       document.getElementById("showAllAnswers").classList.toggle("activeControlButton");
       areHiddenFields = false;
   } else {
    document.body.appendChild(fieldsNodes[0]);
    document.body.appendChild(fieldsNodes[1]);
    document.body.appendChild(fieldsNodes[2]);
    document.getElementById("showAllAnswers").classList.toggle("activeControlButton");
    areHiddenFields = true;
}
}

//}());