758 lines
23 KiB
JavaScript
758 lines
23 KiB
JavaScript
var grades;
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var rmpLink;
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var next;
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var bottom;
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var eCISLink;
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var textbookLink;
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var coursename;
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var profname;
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var profinit;
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var uniquenum;
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var profurl;
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var registerlink;
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var department;
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var course_nbr;
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var datetimearr = [];
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var chart;
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var description;
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var status;
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var semesterCode;
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var isIndividual = false;
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var done = true;
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const days = new Map([
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["M", "Monday"],
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["T", "Tuesday"],
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["W", "Wednesday"],
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["TH", "Thursday"],
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["F", "Friday"]
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]);
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const fadetime = 150;
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const butdelay = 75;
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//This extension may be super lit, but you know what's even more lit?
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//Matthew Tran's twitter and insta: @MATTHEWTRANN and @matthew.trann
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next = $("#next_nav_link");
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chrome.storage.sync.get('loadAll', function (data) {
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if (data.loadAll) {
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$('[title*="next listing"]').remove();
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}
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});
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loadDataBase();
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//make heading and modal
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if (!$("#kw_results_table").length) {
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$("table thead th:last-child").after('<th scope=col>Plus</th>');
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$("table").after(`<div style="text-align:center">
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<div class="loader" id='loader' ></div>
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<br>
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<h1 id="nextlabel"style="color: #FF9800;display:none;">Loading Courses</h1>
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<h1 id="retrylabel"style="color: #F44336;display:none;">Failed to Load Courses</h1>
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<br>
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<button class=matbut id="retry" style="background: #F44336;display:none;">Retry</button>
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</div>`);
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var modhtml = `<div class=modal id=myModal>
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<div class=modal-content>
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<span class=close>×</span>
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<div class=card>
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<div class=cardcontainer>
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<h2 class=title id="title">Computer Fluency (C S 302)</h2>
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<h2 class=profname id="profname">with Bruce Porter</h2>
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<div id="topbuttons" class=topbuttons>
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<button class=matbut id="rateMyProf" style="background: #4CAF50;"> RMP </button>
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<button class=matbut id="eCIS" style="background: #CDDC39;"> eCIS </button>
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<button class=matbut id="textbook" style="background: #FFC107;"> Textbook </button>
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<button class=matbut id="Syllabi"> Past Syllabi </button>
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<button class=matbut id="saveCourse" style="background: #F44336;"> Save Course +</button>
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</div>
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</div>
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</div>
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<div class=card>
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<div class=cardcontainer style="">
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<ul class=description id="description" style="list-style-type:disc"></ul>
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</div>
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</div>
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<div class=card style='text-align:center'>
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<select id="semesters" style='text-align-last:center;color:#666666;fill:#666666;'>
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</select>
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<div id="chartcontainer" class=cardcontainer>
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<div id=chart></div>
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</div>
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</div>
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</div>
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</div>`;
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$("#container").prepend(modhtml);
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$("#myModal").prepend("<div id='snackbar'>defaultmessage..</div>");
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//go through all the rows in the list
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$('table').find('tr').each(function () {
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if (!($(this).find('td').hasClass("course_header")) && $(this).has('th').length == 0) {
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//if a course row, then add the extension button
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$(this).append(`<td data-th="Plus"><input type="image" class="distButton" id="distButton" style="vertical-align: bottom; display:block;" width="20" height="20" src='${chrome.extension.getURL('images/disticon.png')}'/></td>`);
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// if ($(this).find('td[data-th="Status"]').text().includes('waitlisted')) {
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// $(this).find('td').each(function () {
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// $(this).css('background-color', '#E0E0E0');
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// });
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// }
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}
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});
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}
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//update the conflicts
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update(0);
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/*Handle the button clicks*/
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$("tbody").on('click', '#distButton', function () {
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var row = $(this).closest('tr');
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$('.modal-content').stop().animate({
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scrollTop: 0
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}, 500);
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$(this).blur();
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getCourseInfo(row);
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getDistribution();
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});
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$(window).scroll(function () {
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if ($(document).height() <= $(window).scrollTop() + $(window).height() + 130) {
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loadNextPages();
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}
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});
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$("#myModal").on('click', '#saveCourse', function () {
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setTimeout(function () {
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saveCourse();
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}, 0);
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});
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$("#Syllabi").click(function () {
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setTimeout(function () {
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window.open(`https://utdirect.utexas.edu/apps/student/coursedocs/nlogon/?semester=&department=${department}&course_number=${course_nbr}&course_title=&unique=&instructor_first=&instructor_last=${profname}&course_type=In+Residence&search=Search`);
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}, butdelay);
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});
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$("#rateMyProf").click(function () {
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setTimeout(function () {
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window.open(rmpLink);
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}, butdelay);
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});
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$("#eCIS").click(function () {
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setTimeout(function () {
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window.open(eCISLink);
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}, butdelay);
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});
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$("#textbook").click(function () {
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setTimeout(function () {
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window.open(textbookLink);
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}, butdelay);
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});
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$("#semesters").on('change', function () {
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var sem = $(this).val();
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sem = sem == "Aggregate" ? undefined : sem;
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getDistribution(sem);
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});
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$("#retry").click(function () {
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$("#retrylabel").hide();
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$(this).hide();
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loadNextPages();
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});
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$(document).keydown(function (e) {
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/*Close Modal when hit escape*/
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if (e.keyCode == 27) {
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close();
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} else if (e.keyCode == 13 && $('#myModal').is(':visible')) {
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/*save course when hit enter*/
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saveCourse();
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}
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});
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/*Listen for update mssage coming from popup*/
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chrome.runtime.onMessage.addListener(
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function (request, sender, sendResponse) {
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if (request.command == "updateCourseList") {
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update(0);
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}
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});
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function loadNextPages() {
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chrome.storage.sync.get('loadAll', function (data) {
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if (data.loadAll) {
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let link = next.prop('href');
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if (done && next && link) {
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$("#nextlabel").css('display', 'inline-block');
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$('#loader').css('display', 'inline-block');
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done = false;
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$.get(link, function (response) {
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if (response) {
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var nextpage = $('<div/>').html(response).contents();
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var current = $('tbody');
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var oldlength = $('tbody tr').length;
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// console.log(oldlength);
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var last = current.find('.course_header>h2:last').text();
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// console.log(last);
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next = nextpage.find("#next_nav_link");
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done = true;
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$("#nextlabel").hide();
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$('#loader').hide();
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var newrows = [];
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nextpage.find('tbody>tr').each(function () {
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let hasCourseHead = $(this).find('td').hasClass("course_header");
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if (!(hasCourseHead && $(this).has('th').length == 0)) {
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$(this).append(`<td data-th="Plus"><input type="image" class="distButton" id="distButton" style="vertical-align: bottom; display:block;" width="20" height="20" src='${chrome.extension.getURL('images/disticon.png')}'/></td>`);
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// if ($(this).find('td[data-th="Status"]').text().includes('waitlisted')) {
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// $(this).find('td').each(function () {
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// $(this).css('background-color', '#E0E0E0');
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// });
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// }
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}
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if (!(hasCourseHead && last == $(this).find('td').text())) {
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newrows.push($(this));
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}
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});
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current.append(newrows);
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// console.log($('tbody tr').length + " " + $('tr>td.course_header').length);
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// update(oldlength + 1);
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update(oldlength + 1)
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}
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}).fail(function () {
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done = true;
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$("#nextlabel").hide();
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$('#loader').hide();
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$("#retrylabel").css('display', 'inline-block');
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$('#retry').css('display', 'inline-block');
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});
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}
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}
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});
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}
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function saveCourse() {
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var c = new Course(coursename, uniquenum, profname, datetimearr, status, profurl, registerlink);
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chrome.runtime.sendMessage({
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command: "courseStorage",
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course: c,
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action: $("#saveCourse").text().substring(0, $("#saveCourse").text().indexOf(" ")).toLowerCase()
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}, function (response) {
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$("#saveCourse").text(response.label);
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$("#snackbar").text(response.done);
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setTimeout(function () {
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$("#snackbar").attr("class", "show");
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}, 200);
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setTimeout(function () {
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$("#snackbar").attr("class", "");
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}, 3000);
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chrome.runtime.sendMessage({
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command: "updateCourseList"
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});
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});
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}
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/* Update the course list to show if the row contains a course that conflicts with the saved course is one of the saved courses */
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function update(start) {
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chrome.storage.sync.get('courseConflictHighlight', function (data) {
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var red = 0;
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var black = 0;
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var green = 0;
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$('table').find('tr').each(function (i) {
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if (i >= start) {
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if (!($(this).find('td').hasClass("course_header")) && $(this).has('th').length == 0) {
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var thisForm = this;
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var uniquenum = $(this).find('td[data-th="Unique"]').text();
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// console.log(uniquenum);
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chrome.runtime.sendMessage({
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command: "isSingleConflict",
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dtarr: getDtarr(this),
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unique: uniquenum
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}, function (response) {
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var tds = $(thisForm).find('td');
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// console.log(tds.css('color'));
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if (response.isConflict && data.courseConflictHighlight && !response.alreadyContains) {
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if (tds.css('color') != 'rgb(244, 67, 54)') {
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console.log('made red ' + uniquenum);
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red++;
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tds.css('color', '#F44336').css('text-decoration', 'line-through').css('font-weight', 'normal');
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}
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} else if (!response.alreadyContains) {
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if (tds.css('color') != 'rgb(51, 51, 51)') {
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console.log('made black ' + uniquenum);
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black++;
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tds.css('color', 'black').css('text-decoration', 'none').css('font-weight', 'normal');
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}
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}
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if (response.alreadyContains) {
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if (tds.css('color') != 'rgb(76, 175, 80)') {
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green++;
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console.log('made green ' + uniquenum);
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tds.css('color', '#4CAF50').css('text-decoration', 'none').css('font-weight', 'bold');
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}
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}
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});
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}
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}
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});
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//console.log(`red: ${red} black: ${black} green: ${green}`);
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});
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}
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/* For a row, get the date-time-array for checking conflicts*/
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function getDtarr(row) {
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var numlines = $(row).find('td[data-th="Days"]>span').length;
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var dtarr = [];
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for (var i = 0; i < numlines; i++) {
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var date = $(row).find('td[data-th="Days"]>span:eq(' + i + ')').text();
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var time = $(row).find('td[data-th="Hour"]>span:eq(' + i + ')').text();
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var place = $(row).find('td[data-th="Room"]>span:eq(' + i + ')').text();
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for (var j = 0; j < date.length; j++) {
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var letter = date.charAt(j);
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var day = "";
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if (letter == "T" && j < date.length - 1 && date.charAt(j + 1) == "H") {
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dtarr.push(["TH", convertTime(time), place]);
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} else {
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if (letter != "H") {
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dtarr.push([letter, convertTime(time), place]);
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}
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}
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}
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}
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return dtarr;
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}
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/*Course object for passing to background*/
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function Course(coursename, unique, profname, datetimearr, status, link, registerlink) {
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this.coursename = coursename;
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this.unique = unique;
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this.profname = profname;
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this.datetimearr = datetimearr;
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this.status = status;
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this.link = link;
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this.registerlink = registerlink;
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}
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/*For a row, get all the course information and add the date-time-lines*/
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function getCourseInfo(row) {
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console.log('WHAT');
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semesterCode = new URL(window.location.href).pathname.split('/')[4];
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$("h2.dateTimePlace").remove();
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$('table').find('tr').each(function () {
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if ($(this).find('td').hasClass("course_header")) {
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coursename = $(this).find('td').text() + "";
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}
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if ($(this).is(row)) {
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profurl = $(this).find('td[data-th="Unique"] a').prop('href');
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registerlink = $(this).find('td[data-th="Add"] a').prop('href');
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// console.log(registerlink);
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uniquenum = $(this).find('td[data-th="Unique"]').text();
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status = $(this).find('td[data-th="Status"]').text();
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profname = $(this).find('td[data-th="Instructor"]').text().split(', ')[0];
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profinit = $(this).find('td[data-th="Instructor"]').text().split(', ')[1];
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if (profname.indexOf(" ") == 0) {
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profname = profname.substring(1);
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}
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var numlines = $(this).find('td[data-th="Days"]>span').length;
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datetimearr = [];
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var lines = [];
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for (var i = 0; i < numlines; i++) {
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var date = $(this).find('td[data-th="Days"]>span:eq(' + i + ')').text();
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var time = $(this).find('td[data-th="Hour"]>span:eq(' + i + ')').text();
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var place = $(this).find('td[data-th="Room"]>span:eq(' + i + ')').text();
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lines.push($(`<h2 class="dateTimePlace">${makeLine(date, time, place)}</th>`));
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}
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$("#topbuttons").before(lines);
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return false;
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}
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});
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/*Handle if on the individual course page, ie if the textbook button exists*/
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if ($("#textbook_button").length) {
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coursename = $("#details h2").text();
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var gotname = $("table").find("td[data-th='Instructor']").text();
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if (gotname != "") {
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profinit = gotname.split(", ")[1].substring(0, 1);
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} else {
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profinit = "";
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}
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profurl = document.URL;
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// console.log(profurl);
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}
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getDescription();
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department = coursename.substring(0, coursename.search(/\d/) - 2);
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course_nbr = coursename.substring(coursename.search(/\d/), coursename.indexOf(" ", coursename.search(/\d/)));
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textbookLink = `https://www.universitycoop.com/adoption-search-results?sn=${semesterCode}__${department}__${course_nbr}__${uniquenum}`
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}
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/* Make the day-time-arr and make the text for the date-time-line*/
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function makeLine(date, time, place) {
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var arr = [];
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var output = "";
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for (var i = 0; i < date.length; i++) {
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var letter = date.charAt(i);
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var day = "";
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if (letter == "T" && i < date.length - 1 && date.charAt(i + 1) == "H") {
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arr.push(days.get("TH"));
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datetimearr.push(["TH", convertTime(time), place]);
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} else {
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if (letter != "H") {
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arr.push(days.get(letter));
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datetimearr.push([letter, convertTime(time), place]);
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}
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}
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}
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if (arr.length > 2) {
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for (var i = 0; i < arr.length; i++) {
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if (i < arr.length - 1) {
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output += arr[i] + ", "
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}
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if (i == arr.length - 2) {
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output += "and ";
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}
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if (i == arr.length - 1) {
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output += arr[i];
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}
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}
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} else if (arr.length == 2) {
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output = arr[0] + " and " + arr[1];
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} else {
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output += arr[0];
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}
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var building = place.substring(0, place.search(/\d/) - 1);
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if (building == "") {
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building = "Undecided Location";
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}
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return `${output} at ${time.replace(/\./g, '').replace(/\-/g, ' to ')} in <a style='font-size:medium' target='_blank' href='https://maps.utexas.edu/buildings/UTM/${building}'>${building}</>`;
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}
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/*Convert time to 24hour format*/
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function convertTime(time) {
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var converted = time.replace(/\./g, '').split("-");
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for (var i = 0; i < 2; i++) {
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converted[i] = moment(converted[i], ["h:mm A"]).format("HH:mm");
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}
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return converted;
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}
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/*Query the grades database*/
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function getDistribution(sem) {
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var query;
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if (!sem) {
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query = "select * from agg";
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} else {
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query = "select * from grades";
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}
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query += " where dept like '%" + department + "%'";
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query += " and prof like '%" + profname.replace(/'/g, "") + "%'";
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query += " and course_nbr like '%" + course_nbr + "%'";
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if (sem) {
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query += "and sem like '%" + sem + "%'";
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}
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query += "order by a1+a2+a3+b1+b2+b3+c1+c2+c3+d1+d2+d3+f desc";
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var res = grades.exec(query)[0];
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var output = "";
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if (!sem) {
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openDialog(department, coursename, "aggregate", profname, res);
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} else {
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var data;
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if (typeof res == 'undefined' || profname == "") {
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data = [];
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} else {
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data = res.values[0];
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}
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setChart(data);
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}
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}
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/*Open the modal and show all the data*/
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function openDialog(dep, cls, sem, professor, res) {
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$("#myModal").fadeIn(fadetime);
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//initial text on the "save course button"
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chrome.runtime.sendMessage({
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command: "alreadyContains",
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unique: uniquenum
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}, function (response) {
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if (response.alreadyContains) {
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$("#saveCourse").text("Remove Course -");
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||
} else {
|
||
$("#saveCourse").text("Add Course +");
|
||
}
|
||
});
|
||
//set if no grade distribution
|
||
var data;
|
||
$("#semesters").empty();
|
||
if (typeof res == 'undefined' || profname == "") {
|
||
data = [];
|
||
$("#semesters").append("<option>No Data</option>")
|
||
} else {
|
||
var semesters = res.values[0][18].split(",").reverse();
|
||
semesters.unshift('Aggregate');
|
||
var sems = [];
|
||
for (var i = 0; i < semesters.length; i++) {
|
||
sems.push($(`<option value="${semesters[i]}">${semesters[i]}</option>`));
|
||
}
|
||
$("#semesters").append(sems);
|
||
data = res.values[0];
|
||
}
|
||
var modal = document.getElementById('myModal');
|
||
var span = document.getElementsByClassName("close")[0];
|
||
modal.style.display = "block";
|
||
|
||
var color = "black";
|
||
if (status.includes("open")) {
|
||
color = "#4CAF50";
|
||
} else if (status.includes("waitlisted")) {
|
||
color = "#FF9800"
|
||
} else if (status.includes("closed") || status.includes("cancelled")) {
|
||
color = "#FF5722";
|
||
}
|
||
$("#title").text(prettifyTitle()).append("<span style='color:" + color + ";font-size:medium;'>" + " #" + uniquenum + "</>");
|
||
|
||
if (typeof profinit != "undefined" && profinit.length > 1) {
|
||
profinit = profinit.substring(0, 1);
|
||
}
|
||
var name;
|
||
if (profname == "") {
|
||
name = "Undecided Professor ";
|
||
} else {
|
||
name = prettifyName();
|
||
}
|
||
$("#profname").text("with " + name);
|
||
//close button
|
||
span.onclick = function () {
|
||
close();
|
||
}
|
||
setChart(data);
|
||
// When clicks anywhere outside of the modal, close it
|
||
window.onclick = function (event) {
|
||
if (event.target == modal) {
|
||
close();
|
||
}
|
||
}
|
||
}
|
||
|
||
function close() {
|
||
$("#myModal").fadeOut(fadetime);
|
||
$("#snackbar").attr("class", "");
|
||
}
|
||
|
||
function setChart(data) {
|
||
//set up the chart
|
||
chart = Highcharts.chart('chart', {
|
||
chart: {
|
||
type: 'column',
|
||
backgroundColor: ' #fefefe',
|
||
spacingLeft: 10
|
||
},
|
||
title: {
|
||
text: null
|
||
},
|
||
subtitle: {
|
||
text: null
|
||
},
|
||
legend: {
|
||
enabled: false
|
||
},
|
||
xAxis: {
|
||
title: {
|
||
text: 'Grades'
|
||
},
|
||
categories: [
|
||
'A',
|
||
'A-',
|
||
'B+',
|
||
'B',
|
||
'B-',
|
||
'C+',
|
||
'C',
|
||
'C-',
|
||
'D+',
|
||
'D',
|
||
'D-',
|
||
'F'
|
||
],
|
||
crosshair: true
|
||
},
|
||
yAxis: {
|
||
min: 0,
|
||
title: {
|
||
text: 'Students'
|
||
}
|
||
},
|
||
credits: {
|
||
enabled: false
|
||
},
|
||
lang: {
|
||
noData: "The professor hasn't taught this class :("
|
||
},
|
||
tooltip: {
|
||
headerFormat: '<span style="font-size:small; font-weight:bold">{point.key}</span><table>',
|
||
pointFormat: '<td style="color:{black};padding:0;font-size:small; font-weight:bold;"><b>{point.y:.0f} Students</b></td>',
|
||
footerFormat: '</table>',
|
||
shared: true,
|
||
useHTML: true
|
||
},
|
||
plotOptions: {
|
||
bar: {
|
||
pointPadding: 0.2,
|
||
borderWidth: 0
|
||
},
|
||
series: {
|
||
animation: {
|
||
duration: 700
|
||
}
|
||
}
|
||
},
|
||
series: [{
|
||
name: 'Grades',
|
||
data: [{
|
||
y: data[6],
|
||
color: '#4CAF50'
|
||
}, {
|
||
y: data[7],
|
||
color: '#8BC34A'
|
||
}, {
|
||
y: data[8],
|
||
color: '#CDDC39'
|
||
}, {
|
||
y: data[9],
|
||
color: '#FFEB3B'
|
||
}, {
|
||
y: data[10],
|
||
color: '#FFC107'
|
||
}, {
|
||
y: data[11],
|
||
color: '#FFA000'
|
||
}, {
|
||
y: data[12],
|
||
color: '#F57C00'
|
||
}, {
|
||
y: data[13],
|
||
color: '#FF5722'
|
||
}, {
|
||
y: data[14],
|
||
color: '#FF5252'
|
||
}, {
|
||
y: data[15],
|
||
color: '#E64A19'
|
||
}, {
|
||
y: data[16],
|
||
color: '#F44336'
|
||
}, {
|
||
y: data[17],
|
||
color: '#D32F2F'
|
||
}]
|
||
}]
|
||
}, function (chart) { // on complete
|
||
if (data.length == 0) {
|
||
//if no data, then show the message and hide the series
|
||
chart.renderer.text('Could not find data for this Instructor teaching this Course.', 100, 120)
|
||
.css({
|
||
fontSize: '20px',
|
||
width: '300px',
|
||
align: 'center',
|
||
left: '160px'
|
||
})
|
||
.add();
|
||
$.each(chart.series, function (i, ser) {
|
||
ser.hide();
|
||
});
|
||
}
|
||
|
||
});
|
||
}
|
||
|
||
/*Format the title*/
|
||
function prettifyTitle() {
|
||
val = department.length + course_nbr.length + 3;
|
||
output = coursename.substring(val).replace(/\b\w*/g, function (txt) {
|
||
return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
|
||
});
|
||
return output + " (" + department + " " + course_nbr + ")";
|
||
}
|
||
/* Format the Professor Name */
|
||
function prettifyName() {
|
||
var fixedprofinit = "";
|
||
if (profinit) {
|
||
fixedprofinit = profinit + ". ";
|
||
}
|
||
return fixedprofinit + profname.replace(/\w\S*/g, function (txt) {
|
||
return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
|
||
});
|
||
}
|
||
|
||
/*Get the course description from the profurl and highlight the important elements, as well as set the eCIS, and rmp links.*/
|
||
function getDescription() {
|
||
// console.log(window.location.href);
|
||
// console.log(profurl);
|
||
console.log('hello');
|
||
chrome.runtime.sendMessage({
|
||
method: "GET",
|
||
action: "xhttp",
|
||
url: profurl,
|
||
data: ""
|
||
}, function (response) {
|
||
if (response) {
|
||
// console.log(response);
|
||
var output = "";
|
||
var object = $('<div/>').html(response).contents();
|
||
object.find('#details > p').each(function () {
|
||
var sentence = $(this).text();
|
||
if (sentence.indexOf("Prerequisite") == 0) {
|
||
sentence = "<li style='font-weight: bold;' class='descriptionli'>" + sentence + "</li>";
|
||
} else if (sentence.indexOf("May be") >= 0) {
|
||
sentence = "<li style='font-style: italic;' class='descriptionli'>" + sentence + "</li>";
|
||
} else if (sentence.indexOf("Restricted to") == 0) {
|
||
sentence = "<li style='color:red;' class='descriptionli'>" + sentence + "</li>";
|
||
} else {
|
||
sentence = "<li class='descriptionli'>" + sentence + "</li>";
|
||
}
|
||
output += sentence;
|
||
});
|
||
description = output;
|
||
if (!description) {
|
||
description = "<p style='color:red;font-style:bold'>You have been logged out. Please refresh the page and log back in using your UT EID and password.</p>"
|
||
}
|
||
$("#description").animate({
|
||
'opacity': 0
|
||
}, 200, function () {
|
||
$(this).html(description).animate({
|
||
'opacity': 1
|
||
}, 200);
|
||
});
|
||
var first = object.find('td[data-th="Instructor"]').text();
|
||
first = first.substring(first.indexOf(", "), first.indexOf(" ", first.indexOf(", ") + 2));
|
||
first = first.substring(2);
|
||
rmpLink = `http://www.ratemyprofessors.com/search.jsp?queryBy=teacherName&schoolName=university+of+texas+at+austin&queryoption=HEADER&query=${first} ${profname};&facetSearch=true`;
|
||
if (profname == "") {
|
||
eCISLink = `http://utdirect.utexas.edu/ctl/ecis/results/index.WBX?s_in_action_sw=S&s_in_search_type_sw=C&s_in_max_nbr_return=10&s_in_search_course_dept=${department}&s_in_search_course_num=${course_nbr}`;
|
||
} else {
|
||
eCISLink = `http://utdirect.utexas.edu/ctl/ecis/results/index.WBX?&s_in_action_sw=S&s_in_search_type_sw=N&s_in_search_name=${profname.substring(0, 1) + profname.substring(1).toLowerCase()}%2C%20${first.substring(0, 1) + first.substring(1).toLowerCase()}`;
|
||
}
|
||
} else {
|
||
description = "<p style='color:red;font-style:bold'>You have been logged out. Please refresh the page and log back in using your UT EID and password.</p>"
|
||
$("#description").animate({
|
||
'opacity': 0
|
||
}, 200, function () {
|
||
$(this).html(description).animate({
|
||
'opacity': 1
|
||
}, 200);
|
||
});
|
||
rmpLink = "http://www.ratemyprofessors.com/campusRatings.jsp?sid=1255";
|
||
eCISLink = "http://utdirect.utexas.edu/ctl/ecis/results/index.WBX?";
|
||
}
|
||
});
|
||
}
|
||
/* Load the database*/
|
||
function loadDataBase() {
|
||
sql = window.SQL;
|
||
loadBinaryFile('grades.db', function (data) {
|
||
var sqldb = new SQL.Database(data);
|
||
grades = sqldb;
|
||
});
|
||
}
|
||
/* load the database from file */
|
||
function loadBinaryFile(path, success) {
|
||
var xhr = new XMLHttpRequest();
|
||
xhr.open("GET", chrome.extension.getURL(path), true);
|
||
xhr.responseType = "arraybuffer";
|
||
xhr.onload = function () {
|
||
var data = new Uint8Array(xhr.response);
|
||
var arr = new Array();
|
||
for (var i = 0; i != data.length; ++i) arr[i] = String.fromCharCode(data[i]);
|
||
success(arr.join(""));
|
||
};
|
||
xhr.send();
|
||
}; |