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// ==UserScript==
// @name Grade Calculator
// @description A short script to help add up the values of the assignments in family.asud.us and also calculate the grade you need to get on your final.
// @version 1.3
// @namespace http://tampermonkey.net/
// @author Matthew Hong
// @license MIT
// @include https://family.ausd.us/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Your code here...
var grade;
var categories = [];
var studentScore = [];
var possibleScore = [];
var pointSystem;
var categoryStudentScore = {};
var categoryTotal = {};
var categoryWeight = {};
var categoryNames;
if(document.URL.indexOf("scores") != -1){
pointSystem = confirm("Is this class a point system?");
var scores = [].slice.call(document.getElementsByClassName("bold-underline"));
for(var numOfScores = 0; numOfScores < scores.length; numOfScores++){
scores[numOfScores].addEventListener('click',changeScore,false);
}
//stuff goes here
calculateAssignments();
var comments = document.getElementsByClassName("comment");
var element = document.createElement("button");
element.innerHTML = "Calculate score needed on Finals.";
element.onclick = calculateFinalScore;
comments[1].appendChild(element);
if(!pointSystem){
getCategories();
calculateCategoryScores();
console.log(categoryStudentScore);
console.log(categoryTotal);
calculateGrade();
}
//console.log(categorySums);
}
function calculateCategoryScores(){
for(var k = 0; k < categoryNames.length; k++){
categoryStudentScore[categoryNames[k]] = 0;
categoryTotal[categoryNames[k]] = 0;
}
for(var i = 0; i < studentScore.length; i++){
if(isNaN(possibleScore[i]) || isNaN(studentScore[i])){
}else{
categoryTotal[categories[i]] = parseInt(categoryTotal[categories[i]])+possibleScore[i];
categoryStudentScore[categories[i]] = parseInt(categoryStudentScore[categories[i]])+studentScore[i];
}
}
}
function calculateGrade(){
grade = 0;
for(var i = 0; i < categoryNames.length; i++){
var scoreAverage = 0, counter = 0;
for(var c = 0; c < studentScore.length; c++){
if(categoryNames[i] == categories[c] && !isNaN(parseInt(studentScore[c])) && studentScore[c] != "--"){
console.log(possibleScore[c]);
scoreAverage += parseInt(studentScore[c])/parseInt(possibleScore[c]);
counter++;
}
}
grade += (scoreAverage/counter)*(parseInt(categoryWeight[categoryNames[i]])/100);
}
console.log(grade);
}
function getCategories(){
var trArray = [].slice.call(document.getElementsByTagName("tr"));//converts the HTML collection to a normal array.
for(var k = 0; k < 3; k++)
trArray.splice(0,1);
for(var i = 0; i < trArray.length; i++){
categories.push(trArray[i].children[1].innerHTML);
}
categoryNames = unique(categories);
alert("I have found "+categoryNames.length+" categories.");
if(!pointSystem){
for(var l = 0; l < categoryNames.length; l++){
var categoryWorth = prompt("What percent is "+categoryNames[l]+" worth?");
categoryWeight[categoryNames[l]] = categoryWorth;
categoryStudentScore[categoryNames[l]] = 0;
categoryTotal[categoryNames[l]] = 0;
}
}
}
function calculateAssignments(){
var array = document.getElementsByClassName("bold-underline");
studentScore = [];
possibleScore = [];
for(var i = 0; i < array.length; i++){
var tempSplit = array[i].innerHTML.split("/");
if(isNaN(parseFloat(tempSplit[0])) && !isNaN(parseFloat(tempSplit[1]))){
studentScore.push(tempSplit[0]);
possibleScore.push(parseInt(tempSplit[1]));
}else{
studentScore.push(parseInt(tempSplit[0]));
possibleScore.push(parseInt(tempSplit[1]));
}
}
}
function getGrade(){
var currentGrade = document.getElementsByTagName("td");
currentGrade = currentGrade[3].innerHTML;
currentGrade = currentGrade.substring(currentGrade.indexOf("t>")+2);
currentGrade = currentGrade.substring(0, currentGrade.indexOf("%"));
currentGrade = parseFloat(currentGrade).toFixed(2);
return currentGrade;
}
function changeScore(){
var tempSplit = this.innerText.split("/");
var newScore = prompt("Enter the new score");
this.innerHTML = newScore+"/"+tempSplit[1];
if(!pointSystem){
calculateAssignments();
calculateCategoryScores();
calculateGrade();
updateComments(grade,"");
}
}
function updateComments(gradeNeeded, msg){
var comments = document.getElementsByClassName("comment");
var gradeMsg;
if(msg === ""){
gradeMsg = (gradeNeeded*100).toPrecision(5)+"%";
comments[0].innerHTML = ("Your new grade would be "+gradeMsg.fontcolor("red")+".").fontsize(6);
}else{
gradeMsg = gradeNeeded.toPrecision(5)+"%";
comments[0].innerHTML = ("You need to get a "+gradeMsg.fontcolor("red")+" on the final. "+msg).fontsize(6);
}
}
function unique(array) {
var arr = [];
for(var i = 0; i < array.length; i++) {
if(!arr.includes(array[i])) {
arr.push(array[i]);
}
}
return arr;
}
function calculateFinalScore(){
alert("You have a grade for "+studentScore.length+" assginments. Out of "+possibleScore.length+" assignments.");
if(pointSystem){
var studentSum = 0;
for(var i = 0; i < studentScore.length; i++){
if(!isNaN(studentScore[i])){
studentSum += studentScore[i];
}
}
var assignmentSum = 0;
for(var k = 0; k < possibleScore.length; k++){
if(!isNaN(possibleScore[k])){
assignmentSum += possibleScore[k];
}
}
alert("You have "+studentSum+" points out of a possible "+assignmentSum);
}
var done = false;
var percentageWorth;
var gradeWant;
do{
percentageWorth = prompt("How much is your final/midterm worth?");
if(!isNaN(percentageWorth) && percentageWorth !== null && percentageWorth !== ''){
done = confirm("You entered "+percentageWorth+"%. Correct?");
}
}while(!done);
done = false;
do{
gradeWant = prompt("What grade do you want in the class?");
if(!isNaN(gradeWant) && gradeWant !== null && gradeWant !== ''){
done = confirm("You entered "+gradeWant+"%. Correct?");
}
}while(!done);
//Thanks Roger for the formula xD.
var gradeNeededOnFinal = ((((gradeWant/100) - ((1 - (percentageWorth/100)) *((getGrade()/100)))).toFixed(4) / (percentageWorth/100).toFixed(4)))*100;
var littleMsg = "";
if(gradeNeededOnFinal > 100){
littleMsg = "See you at UC ELAC!";
}else if(gradeNeededOnFinal >95){
littleMsg = "BOI YOU BETTER START STUDYING!!!";
}else if(gradeNeededOnFinal > 90){
littleMsg = "You should probably study.";
}else if(gradeNeededOnFinal > 80){
littleMsg = "Meh. Don't really need to study";
}else{
littleMsg = "Take a nap fool.";
}
updateComments(gradeNeededOnFinal, littleMsg);
}
})();