Saving courses now works

background.js

@@ -1,6 +1,14 @@
 chrome.runtime.onMessage.addListener(function(request, sender, response) {
-	if(request.greeting == "hello") {
+	if(request.command == "courseStorage") {
-		getSaved(request,sender,response);
+		if(request.action == "add"){
+			add(request,sender,response);
+		}
+		if(request.action == "remove"){
+			remove(request,sender,response);
+		}
+	}
+	else if(request.command == "alreadyContains"){
+		alreadyContains(request.course,response);
 	}
 	else{
 		const xhr = new XMLHttpRequest();
@@ -16,10 +24,51 @@ chrome.runtime.onMessage.addListener(function(request, sender, response) {
 	return true;
 });
 
+ chrome.runtime.onInstalled.addListener(function() {
+ 	var arr = new Array();
+    chrome.storage.sync.set({savedCourses: arr}, function() {
+      console.log('initial course list');
+    });
+});
 
-function getSaved(request, sender, sendResponse) {
+function add(request, sender, sendResponse) {
-    console.log(sender.tab ?
+	var courses;
-                "from a content script:" + sender.tab.url :
+	var response;
-                "from the extension");
+	chrome.storage.sync.get('savedCourses', function(data) {
-      sendResponse({farewell: "goodbye"});
+		courses = data.savedCourses;
+		courses.push(request.course)
+		console.log(courses);
+		chrome.storage.sync.set({savedCourses: courses});
+		sendResponse({done:"Added: "+request.course.unique+request.course.coursename,label:"Remove Course -"});
+	});
+}
+function remove(request, sender, sendResponse) {
+	var courses;
+	var response;
+	chrome.storage.sync.get('savedCourses', function(data) {
+		courses = data.savedCourses;
+		var index = 0;
+		while(index<courses.length && courses[index].unique != request.course.unique){
+			index++;
+		}
+		courses.splice(index,1);
+		console.log(courses);
+		chrome.storage.sync.set({savedCourses: courses});
+		sendResponse({done:"removed: "+request.course.unique+request.course.coursename,label:"Add Course +"});
+	});
+}
+
+function alreadyContains(course,sendResponse){
+	chrome.storage.sync.get('savedCourses', function(data) {
+		courses = data.savedCourses;
+		var contains = false;
+		var i = 0;
+		while(i < courses.length && !contains){
+			if(courses[i].unique == course.unique){
+				contains = true;
+			}
+			i++;
+		}
+		sendResponse({alreadyContains: contains});
+	});
 }

content.js

@@ -8,6 +8,9 @@ var uniquenum;
 var profurl;
 var department;
 var course_nbr;
+var times = [];
+var dates = [];
+var locations = [];
 var description;
 var status;
 const days = new Map([["M" ,"Monday"], 
@@ -40,17 +43,22 @@ $(document).ready( function() {
 	    	$(this).append('<td data-th="Plus"><input type="image" class="distButton" style="vertical-align: bottom; display:block;" width="25" height="25" src='+chrome.extension.getURL('disticon.png')+' /></td>');
 	    }
 	});
+
 	$(".distButton").click(function(){
 		var row = $(this).closest('tr');
 		getCourseInfo(row);
 		getDistribution();
 	});
+
 	$("#saveCourse").click(function(){
-chrome.runtime.sendMessage({greeting: "hello"}, function(response) {
+		var c = new Course(coursename,uniquenum, profname, times, dates, locations, status, profurl);
- console.log(response.farewell);
+		chrome.runtime.sendMessage({command: "courseStorage",course: c, action:$("#saveCourse").text().substring(0,$("#saveCourse").text().indexOf(" ")).toLowerCase()}, function(response) {
+			$("#saveCourse").text(response.label);
+			alert(response.done);
+		});
+		$("#saveCourse").text("Remove Course");
 	});
 
-	});
 	$("#Syllabi").click(function(){
 		setTimeout(function(){	
 				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');
@@ -69,12 +77,21 @@ chrome.runtime.sendMessage({greeting: "hello"}, function(response) {
 	$(document).keydown(function(e) { 
     	if (e.keyCode == 27) { 
         	$(".modal").fadeOut(fadetime);
-        //or
-       // window.close();
     	} 
 	});
 });
 
+function Course(coursename, unique, profname, times, dates, locations, status, link){
+	this.coursename = coursename;
+	this.unique = unique;
+	this.profname = profname;
+	this.times = times;
+	this.dates = dates;
+	this.locations = locations;
+	this.status = status;
+	this.link = link;
+}
+
 function getCourseInfo(row){
 	$(".dateTimePlace").remove();
 	$('table').find('tr').each(function(){
@@ -96,6 +113,9 @@ $('table').find('tr').each(function(){
 				var date = $(this).find('td[data-th="Days"]>span:eq('+i+')').text();
 				var time = $(this).find('td[data-th="Hour"]>span:eq('+i+')').text();
 				var place = $(this).find('td[data-th="Room"]>span:eq('+i+')').text();
+				dates.push(date);
+				times.push(time);
+				locations.push(place);
 				$(".topbuttons").before('<h2 class="dateTimePlace">'+makeLine(date,time,place)+'</th>');
 			//	makeLine(date,time,place);
 			}
@@ -169,6 +189,16 @@ openDialog(department,coursename,"aggregate",profname,res);
 
 function openDialog(dep,cls,sem,professor,res){
 	$(".modal").fadeIn(fadetime);
+	var c = new Course(coursename,uniquenum, profname, times, dates, locations, status, profurl);
+	chrome.runtime.sendMessage({command: "alreadyContains",course: c}, function(response) {
+		console.log("Already Contains: "+response.alreadyContains);
+		if(response.alreadyContains){
+			$("#saveCourse").text("Remove Course -");
+		} 
+		else{
+			$("#saveCourse").text("Add Course +");
+		}
+	});
 	var data;
 	if(typeof res == 'undefined'){
 		data = [];