Extension for Edge/scripts/home/diff.js
/*
TODO-
> fix this script.
> remove useless code.
-----------------------
*/
// To send AJAX request to url, then parse html to marks objects.
/*
a=[], marks={};
url = "https://vtop.vit.ac.in/student/class_message_view.asp?sem=FS";
onload = function(){
$.get(url, function(data){
obj = {marks:{}};
TRF=function(i, val){
if(i>1){
$(val).find('td').each(TDF);
if(Object.keys(obj)){
a.push(Object.assign({},obj));
}
}
obj = {marks:{}};
}
TDF=function(i, item){
switch (i) {
case 2:
obj["code"] = $(item).text();
break;
case 3:
obj["learning"] = "CBL";
break;
case 4:
obj["type"] = $(item).text();
break;
}
if(i>4 && obj.type.includes("Theory")){
switch (i) {
case 6:
obj.marks["CAT1"] = $(item).text();
break;
case 8:
obj.marks["CAT2"] = $(item).text();
break;
case 10:
obj.marks["quiz1"] = $(item).text();
break;
case 12:
obj.marks["quiz2"] = $(item).text();
break;
case 14:
obj.marks["quiz3"] = $(item).text();
break;
case 16:
obj.marks["Assignment"] = $(item).text();
break;
}
}
if(i>4 && obj.type.includes("Lab")){
switch (i) {
case 7:
obj.marks["LabCam"] = $(item).text();
break;
}
}
}
// For CBL courses.
$(data).filter('table').first().find('table:nth-of-type(1)').find('tr').each(TRF);
//--------
rowSpan = parseInt($(data).filter('table').first().find('table:nth-of-type(2)').find('tr:nth-of-type(2)').find('td:first').attr('rowspan'));
tA=[], O={}, A=[], obj={}, marks=[];
TRF=function(i, val){
if(!i){return}
switch (i%rowSpan) {
case 1:
tA=[];
$(val).find('td').each(title);
break;
case 3:
$(val).find('td').each(weightage);
break;
case 0:
$(val).find('td').each(score);
chng();
break;
}
}
title = function(i, val){
switch (i) {
case 2:
obj["code"]=$(val).text();
break;
case 3:
obj["learning"] = "PBL";
break;
case 4:
obj["type"]=$(val).text();
}
if(i>5){
tA.push($(val).text());
}
}
weightage = function(i, val){
if(i){
var t = $(val).text();
A.push(Object.assign({}, {"title":tA[i-1], "weightage":t}));
}
}
score = function(i, val){
if(i){
A[i-1]["score"] = $(val).text();
}
}
chng = function(){
a.push(Object.assign({}, obj, {"marks":A}));
A=[];
obj={};
}
$(data).filter('table').first().find('table:nth-of-type(2)').find('tr').each(TRF);
reg = $('table:nth-of-type(2)').find('tr td:first').text().trim().split(" - ")[1]
marks = {"Reg":reg, "marks":a}
console.log(marks);
diff(marks);
store(marks);
});
}
store = function(data){
chrome.storage.local.set({"VITmarks":data}, function(){
if(chrome.runtime.lastError){
console.error("Error!");
console.error(chrome.runtime.lastError);
}
});
}
notify = function(changes){
var notifications=[];
changes.forEach(function(val){
if(isNaN(val.old) && !isNaN(val.new)){
notifications.push({"title" : val.code, "message" : "Marks uploaded for "+val.eval+" - "+val.new});
}
else{
notifications.push({"title" : val.code, "message" : "Marks changed for "+val.eval+" - "+val.new});
}
});
var options = {
"title" : "Marks Change Notification",
"type" : "list",
"iconUrl" : chrome.extension.getURL('images/github-logo.png'),
"message" : "Following marks have been changed.",
"items" : notifications
};
chrome.runtime.sendMessage({"type": "notifications", "options":options});
}
diff = function(data){
chrome.storage.local.get("VITmarks", function(obj){
if(Object.keys(obj).length){
console.warn(obj);
// Changes returned as array of strings.
notify(check(obj.VITmarks.marks,data.marks));
}
});
}
// Changes will be logged as "<CourseCode>-<Evaluation>"
check = function(P, Q){
var changes = [], obj={"code":"", "eval":"", "old":"", "new":""};
eval = ["Assignment", "CAT1", "CAT2", "quiz1", "quiz2", "quiz3"];
P.forEach(function(val,i){
if(val.learning=="PBL"){
val.marks.forEach(function(item, j){
if(item.score!=Q[i].marks[j].score){
changes.push({
"code": val.code,
"eval": val.title,
"old" : item.score,
"new" : Q[i].marks[j].score
});
}
});
}
else{
eval.forEach(function(item){
if(val.marks[item]!=Q[i].marks[item]){
changes.push({
"code": val.code,
"eval": item,
"old" : val.marks[item],
"new" : Q[i].marks[item]
});
}
});
}
})
if(changes.length){
console.log("new changes-");
console.log(changes);
//alert("New Change-"+changes);
}
else{
console.log("No changes.");
}
return changes;
}
*/
// Only for testing.
// For testing - Change in storage, try running in Extension/background console
/*var test = function(){
chrome.storage.local.get("VITmarks", function(obj){
if(chrome.runtime.lastError){
console.error(chrome.runtime.lastError);
return;
}
if(obj.VITmarks.marks[0].learning =="CBL" && obj.VITmarks.marks[0].type.includes("Theory")){
obj.VITmarks.marks[0].marks.quiz1="1.23";
}
else if(obj.VITmarks.marks[0].learning =="CBL" && obj.VITmarks.marks[0].type.includes("Lab")){
obj.VITmarks.marks[0].marks.LabCam="51.11";
}
else{
obj.VITmarks.marks[0].marks[0].score="112";
}
chrome.storage.local.set(obj, function(){
if(chrome.runtime.lastError){
console.error(chrome.runtime.lastError);
return;
}
});
})
}
*/
/*
----------------------
New updated parser.
----------------------
*/
// Parse a table element with marks.
function parse(elem, code){
var a = {}; //assessments
$(elem).find('tr').each(function(i,e){
if(i==0)return; // header row.
var obj = {};
var temp = $(e).find('td');
var title = $(temp[1]).text().trim();
var marks = $(temp[5]).text().trim();
if(marks == '')marks=0;
obj[title] = marks;
a = Object.assign(a, obj);
})
//console.warn(a);
Marks[code]=a;
}
/*
Marks = {};
// Get the marks page and start parsing.
$.get("https://vtop.vit.ac.in/student/marks.asp?sem=FS", function(data){
$($(data).filter('table').find('table')[0]).find('table')
.each(function(i,e){
parent =
$(
$(
$(e).parent()[0]
).parent()[0]
).prev().find('td');
var temp = $(parent[2]).text();
temp += $(parent[4]).text().includes('Lab') ? ':L' : ':T' ;
//console.warn(temp);
parse(e, temp);
});
check();
});
*/
function regno(){
var reg ;
document.cookie.split(';').every(function(e){
if(e.includes('stud')){
reg = (e.split('=')[1]);
return false;
}
});
return reg;
}
function storeMarks(data){
//console.warn("Storing");
var obj = {};
obj[regno()+"Marks"] = data;
console.warn(JSON.stringify(obj));
chrome.storage.local.set(obj, function(){
if(chrome.runtime.lastError){
console.error("Error!");
console.error(chrome.runtime.lastError);
}
//console.warn("Done");
});
}
function check(){
//console.error("Checking");
var temp = regno()+"Marks";
console.warn(JSON.stringify(Marks));
chrome.storage.local.get(temp, function(obj){
if(Object.keys(obj).length){
diff(obj[temp], Marks);
storeMarks(Marks);
}else{
console.warn("Storing First time!");
storeMarks(Marks);
}
});
}
//************************************************
// Changes accounted for
// > Addition of marks table
// > Change of marks for existing courses.
//************************************************
function diff(old, current){
console.log(old);
console.log(current);
// check if table of marks for any course has been added.
var t1 = Object.keys(old), t2 = Object.keys(current);
var obj = jsondiffpatch.diff(t1, t2);
Object.keys(obj).every(function(e){
if(e.includes('_')){
delete(obj[e]);
}
})
if(obj != null && obj != {} ){
//console.error(obj);
console.warn(obj[Object.keys(obj)[0]]+" added");
console.warn(obj);
}
var temp = Object.keys(obj)[0];
// Add notitification for newly added course.
obj = jsondiffpatch.diff(old, current);
if(obj == null) return;
console.log(changeLog(obj));
delete(obj[temp]);
Object.keys(obj).every(function(e){
if(e.includes('_')){
delete(obj[e]);
}
})
notify(changeLog(obj));
}
function changeLog(data){
//template
var t = {
course : "course",
assessment : "assessment",
changes : [-1, 0]
};
var changes = [];
Object.keys(data).forEach(function(course){
Object.keys(data[course]).forEach(function(assessment){
t.course = course;
t.assessment = assessment;
t.changes = data[course][assessment];
changes.push(Object.assign({}, t));
});
});
console.warn(changes);
return changes;
}
function notify(changes){
var notifications=[];
changes.forEach(function(val){
notifications.push({"title" : val.course, "message" : val.assessment+" -> "+val.changes});
});
var options = {
"title" : "Marks Change Notification",
"type" : "list",
"iconUrl" : chrome.extension.getURL('images/github-logo.png'),
"message" : "Following marks have been changed.",
"items" : notifications
};
chrome.runtime.sendMessage({"type": "notifications", "options":options});
}
// Only for testing.
// For testing - Change in storage, try running in Extension/background console
var test = function(){
var a ;
chrome.storage.local.get(null, function(obj){
a=obj;
var temp = regno()+"Marks";
var key1 = Object.keys(a[temp])[0];
var key2 = Object.keys(a[temp][key1])[0];
a[temp][key1][key2]=1999;
//console.error("TESTING");
chrome.storage.local.set(a, function(obj){});
});
}
//test();