421 lines
14 KiB
JavaScript
421 lines
14 KiB
JavaScript
var grades;
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var current_semesters = {};
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var departments = [];
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var should_open = false;
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onStartup();
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/* Handle messages and their commands from content and popup scripts*/
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chrome.runtime.onMessage.addListener(function (request, sender, response) {
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switch (request.command) {
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case "courseStorage":
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if (request.action == "add") {
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add(request, sender, response);
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}
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if (request.action == "remove") {
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remove(request, sender, response);
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}
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break;
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case "isSingleConflict":
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isSingleConflict(request.dtarr, request.unique, response);
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break;
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case "checkConflicts":
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checkConflicts(response);
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break;
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case "updateBadge":
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updateBadge();
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break;
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case "updateStatus":
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updateStatus(response);
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break;
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case "alreadyContains":
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alreadyContains(request.unique, response);
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break;
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case "updateCourseList":
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updateTabs();
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break;
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case "gradesQuery":
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executeQuery(request.query, response);
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break;
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case "currentSemesters":
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response({ semesters: current_semesters});
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getCurrentSemesters();
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break;
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case "currentDepartments":
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response({departments: departments});
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break;
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case "setOpen":
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should_open = true;
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chrome.tabs.create({ url: request.url});
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break;
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case "shouldOpen":
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response({open : should_open});
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should_open = false;
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break;
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default:
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const xhr = new XMLHttpRequest();
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const method = request.method ? request.method.toUpperCase() : "GET";
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xhr.open(method, request.url, true);
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console.log(request);
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xhr.onload = () => {
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console.log(xhr.responseUrl);
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response(xhr.responseText);
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}
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xhr.onerror = () => response(xhr.statusText);
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if (method == "POST") {
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xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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}
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xhr.send(request.data);
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break;
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}
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return true;
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});
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/* Initially set the course data in storage */
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chrome.runtime.onInstalled.addListener(function (details) {
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if (details.reason == "install") {
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chrome.storage.sync.get('savedCourses', function (data) {
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if (!data.savedCourses) {
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var arr = new Array();
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chrome.storage.sync.set({
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savedCourses: arr
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}, function () {
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console.log('initial course list');
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});
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chrome.storage.sync.set({
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courseConflictHighlight: true
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}, function () {
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console.log('initial highlighting: true');
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});
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chrome.storage.sync.set({
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loadAll: true
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}, function () {
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console.log('initial loadAll: true');
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});
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}
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});
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} else if (details.reason == "update") {
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console.log("updated");
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chrome.storage.sync.get('loadAll', function (data) {
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if (data.loadAll == undefined) {
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chrome.storage.sync.set({
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loadAll: true
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}, function () {
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console.log('initial loadAll: true');
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});
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}
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});
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}
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});
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chrome.storage.onChanged.addListener(function (changes) {
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for (key in changes) {
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console.log(changes);
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if (key === 'savedCourses') {
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updateBadge(false, changes.savedCourses.newValue);
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}
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}
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});
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function onStartup(){
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updateBadge(true);
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loadDataBase()
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getCurrentSemesters();
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getCurrentDepartments();
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}
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function getCurrentSemesters(){
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$.get('https://registrar.utexas.edu/schedules', function (response) {
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if (response) {
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htmlToNode(response).find('.callout2>ul>li>a').each(function (i) {
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if (i < Popup.num_semesters) {
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let sem_name = $(this).text().trim();
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if (sem_name != "Course Schedule Archive") {
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// $("#semesters").append(`<option>${sem_name}</option>`);
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current_semesters[sem_name] = "code";
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$.get($(this).attr('href'), function (response) {
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if (response) {
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let response_node = htmlToNode(response);
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let name = response_node.find(".page-title").text().substring(17).trim();
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response_node.find('.gobutton>a').each(function () {
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let link = $(this).attr('href');
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var sem_num = link.substring(link.lastIndexOf('/') + 1).trim();
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if(current_semesters[name] != sem_num){
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current_semesters[name] = sem_num;
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}
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});
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}
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});
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}
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}
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});
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}
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});
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}
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function getCurrentDepartments(){
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$.get('https://catalog.utexas.edu/undergraduate/appendix-b/', function(response){
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if(response){;
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departments = [];
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htmlToNode(response).find('.column1').each(function(i){
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if(i > 1){
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let abv = $(this).text();
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departments.push(abv);
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}
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});
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}
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});
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}
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function updateBadge(first, new_changes) {
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if (new_changes) {
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updateBadgeText(first, new_changes);
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} else {
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chrome.storage.sync.get('savedCourses', function (data) {
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let courses = data.savedCourses;
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updateBadgeText(first, courses);
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});
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}
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}
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function updateBadgeText(first, courses) {
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let badge_text = courses.length > 0 ? `${courses.length}` : "";
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let flash_time = !first ? 200 : 0;
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chrome.browserAction.setBadgeText({
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text: badge_text
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});
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if (!first) {
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chrome.browserAction.setBadgeBackgroundColor({
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color: Colors.badge_flash
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});
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}
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setTimeout(function () {
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chrome.browserAction.setBadgeBackgroundColor({
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color: Colors.badge_default
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});
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}, flash_time);
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}
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/* Find all the conflicts in the courses and send them out/ if there is even a conflict*/
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function checkConflicts(sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var conflicts = [];
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var courses = data.savedCourses;
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for (let i = 0; i < courses.length; i++) {
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for (let j = i + 1; j < courses.length; j++) {
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let course_a = courses[i];
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let course_b = courses[j];
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if (isConflict(course_a.datetimearr, course_b.datetimearr))
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conflicts.push([course_a, course_b]);
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}
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}
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if (conflicts.length == 0) {
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sendResponse({
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isConflict: false
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});
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} else {
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sendResponse({
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isConflict: true,
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between: conflicts
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});
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}
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});
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}
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/* Find if the course at unique and with currdatearr is contained in the saved courses and if it conflicts with any other courses*/
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function isSingleConflict(currdatearr, unique, sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var courses = data.savedCourses;
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var conflict = false;
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var contains = false;
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for (let i = 0; i < courses.length; i++) {
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let course = courses[i];
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if (!conflict && isConflict(currdatearr, course.datetimearr)) {
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conflict = true;
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}
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if (!contains && isSameCourse(course, unique)) {
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contains = true;
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}
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}
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sendResponse({
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isConflict: conflict,
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alreadyContains: contains
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});
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});
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}
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/* Check if conflict between two date-time-arrs*/
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function isConflict(adtarr, bdtarr) {
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for (var i = 0; i < adtarr.length; i++) {
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var current_day = adtarr[i][0];
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var current_times = adtarr[i][1];
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for (var j = 0; j < bdtarr.length; j++) {
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var next_day = bdtarr[j][0];
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var next_times = bdtarr[j][1];
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if (next_day == current_day) {
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if (current_times[0] < next_times[1] && current_times[1] > next_times[0]) {
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return true;
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}
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}
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}
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}
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return false;
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}
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/* Add the requested course to the storage*/
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function add(request, sender, sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var courses = data.savedCourses;
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if (!contains(courses, request.course.unique)) {
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courses.push(request.course)
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console.log(courses);
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chrome.storage.sync.set({
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savedCourses: courses
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});
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}
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sendResponse({
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done: "Added: (" + request.course.unique + ") " + request.course.coursename,
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label: "Remove Course -",
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value: "remove"
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});
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});
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}
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/* Find and Remove the requested course from the storage*/
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function remove(request, sender, sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var courses = data.savedCourses;
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console.log(courses);
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var index = 0;
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while (index < courses.length && courses[index].unique != request.course.unique) {
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index++;
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}
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courses.splice(index, 1);
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chrome.storage.sync.set({
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savedCourses: courses
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});
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sendResponse({
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done: "Removed: (" + request.course.unique + ") " + request.course.coursename,
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label: "Add Course +",
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value: "add"
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});
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});
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}
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/* Find if the unique is already contained within the storage*/
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function alreadyContains(unique, sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var courses = data.savedCourses;
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sendResponse({
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alreadyContains: contains(courses, unique)
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});
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});
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}
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function contains(courses, unique) {
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var i = 0;
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while (i < courses.length) {
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if (isSameCourse(courses[i], unique)) {
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return true;
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}
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i++;
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}
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return false;
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}
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function isSameCourse(course, unique) {
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return course.unique == unique
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}
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function updateTabs() {
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chrome.tabs.query({}, function (tabs) {
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for (var i = 0; i < tabs.length; i++) {
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chrome.tabs.sendMessage(tabs[i].id, {
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command: "updateCourseList"
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});
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}
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});
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}
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const UPDATE_INTERVAL = 1000 * 60 * 16;
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setInterval(updateStatus, UPDATE_INTERVAL);
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// updateStatus();
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function updateStatus(sendResponse) {
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chrome.storage.sync.get('savedCourses', function (data) {
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var courses = data.savedCourses;
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var no_change = true;
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for (let i = 0; i < courses.length; i++) {
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try {
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let c = courses[i];
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let old_status = c.status;
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let old_link = c.link;
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$.ajax({
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url: old_link,
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success: function (result) {
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if (result) {
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console.log(result);
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var object = $('<div/>').html(result).contents();
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let new_status = object.find('[data-th="Status"]').text();
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let register_link = object.find('td[data-th="Add"] a');
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if (register_link)
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register_link = register_link.attr('href');
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var haschanged = (new_status == old_status && register_link == old_link);
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if (!haschanged)
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console.log(c.unique + ' updated from ' + old_status + " to " + new_status + " and " + old_link + " to " + register_link);
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no_change &= haschanged;
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c.registerlink = register_link;
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c.status = new_status;
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}
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}
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});
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} catch (e) {
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console.log(e);
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console.log('Not logged into UT Coursebook. Could not update class statuses.');
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}
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}
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if (!no_change) {
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chrome.storage.sync.set({
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savedCourses: courses
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});
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console.log('updated status');
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}
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});
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}
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function executeQuery(query, sendResponse) {
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console.log(grades)
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var res = grades.exec(query)[0];
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sendResponse({
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data: res,
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});
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}
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/* Load the database*/
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function loadDataBase() {
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sql = window.SQL;
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loadBinaryFile('grades.db', function (data) {
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var sqldb = new SQL.Database(data);
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grades = sqldb;
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});
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}
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/* load the database from file */
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function loadBinaryFile(path, success) {
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var xhr = new XMLHttpRequest();
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xhr.open("GET", chrome.extension.getURL(path), true);
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xhr.responseType = "arraybuffer";
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xhr.onload = function () {
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var data = new Uint8Array(xhr.response);
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var arr = new Array();
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for (var i = 0; i != data.length; ++i) arr[i] = String.fromCharCode(data[i]);
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success(arr.join(""));
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};
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xhr.send();
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};
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