automaticly fetch codeforce submissions and verify it.
// ==UserScript==
// @name ucr cs141 grader helper script
// @namespace http://tampermonkey.net/
// @version 2024-10-12
// @description automaticly fetch codeforce submissions and verify it.
// @author BugParty
// @match https://www.gradescope.com/courses/873565/questions/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=gradescope.com
// @require https://cdnjs.cloudflare.com/ajax/libs/decimal.js/9.0.0/decimal.min.js
// @home-url https://github.com/bugparty/ucr_cs141_gradescope_helper
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
/*
you need to apply for codeforce api key and secret
*/
const apiKey = '123';
const apiSecret = '123';
console.log("inject started");
async function signCodeforcesUrl(apiKey, apiSecret, methodName, params) {
// Generate a random 6-character string
const rand = [...window.crypto.getRandomValues(new Uint8Array(3))].map(b => b.toString(16).padStart(2, '0')).join('');
// Current time in UNIX timestamp format
const currentTime = Math.floor(Date.now() / 1000);
// Adding apiKey and time to params
params.apiKey = apiKey;
params.time = currentTime;
// Sort the parameters lexicographically by keys and values
const sortedParams = Object.keys(params).sort().reduce((acc, key) => {
acc.push(`${key}=${params[key]}`);
return acc;
}, []).join('&');
// Concatenating the string as per the documentation
const stringToHash = `${rand}/${methodName}?${sortedParams}#${apiSecret}`;
//console.log("api string", stringToHash);
// Encoding the string to a Uint8Array
const encoder = new TextEncoder();
const dataToHash = encoder.encode(stringToHash);
// Hashing the string using SHA-512
const hashBuffer = await window.crypto.subtle.digest('SHA-512', dataToHash);
const hashArray = Array.from(new Uint8Array(hashBuffer)); // Convert buffer to byte array
const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join(''); // Convert bytes to hex string
// Forming the apiSig
const apiSig = `${rand}${hashHex}`;
// Creating the signed URL
const signedUrl = `https://codeforces.com/api/${methodName}?${sortedParams}&apiSig=${apiSig}`;
return signedUrl;
}
async function fetchData(url) {
try {
// Sending the HTTP request to the specified URL
const response = await fetch(url);
// Check if the response was successful
if (!response.ok) {
throw new Error(`HTTP error! Status: ${response.status}`);
}
// Parsing the JSON response into an object
const data = await response.json();
// Use the data object as needed
console.log(data);
return data;
} catch (error) {
console.error('Failed to fetch data:', error);
}
}
function isValidInteger(str) {
const invalid_val = {valid: false, val: -1};
const regex = /^\s*\d+\s*$/;
if(!regex.test(str)){
return invalid_val;
}
const num = Number(str);
return {valid: true, val: num};
}
$(document).ready(function(){
const answers_id_queries = ["#question_41404944 > div:nth-child(3) > div:nth-child(4) > div > div > span",
"#question_41404944 > div:nth-child(3) > div:nth-child(6) > div > div > span",
"#question_41404944 > div:nth-child(3) > div:nth-child(8) > div > div > span",
"#question_41404944 > div:nth-child(3) > div:nth-child(10) > div > div > span",
"#question_41404944 > div:nth-child(3) > div:nth-child(12) > div > div > span"
];
const report_title_selector = '#question_41404944_text_12';
const anwers_titles = ["Lost in the Shuffle","Juice Box", "The Stairs", "Chocolate Frogs", "Wizard Chess"];
const methodName = 'contest.status';
const params = { contestId: '551192', asManager: true };
const points_html_template = '<div id="bowman-total-points" class="form--textInput form--textInput-prominent form--textInput-med form--textInput-readOnly u-preserveWhitespace"><span> %points% </span></div>';
let endOfTitle = $("#question_41404944 > div:nth-child(2)");
console.log(endOfTitle);
const button_title = " Fetch Status from codeforce";
endOfTitle.before('<button type="button" id="bowman_super_btn" class="tiiBtn tiiBtn-secondary actionBar--action" tabindex="0" style="display: inline-block;"><span><i class="fa" role="img" aria-hidden="true"></i><span> Fetch Status from codeforce</span></span></button>');
$("#bowman_super_btn").click(function() {
console.log("super button clicked, starting working");
$(this).prop('disabled', true); // Disable the button
$(this).text('Please wait... if not resepond for 10seconds, refresh the page'); // Change button text
signCodeforcesUrl(apiKey, apiSecret, methodName, params)
.then(signedUrl => {
console.log('Signed URL:', signedUrl)
let submissions;
fetchData(signedUrl)
.then(data => {
if (data.status === 'OK')
submissions = data.result;
else{
$("#bowman_super_btn").text("codeforce return an invalid response:"+ data.status)
return;
}
const user_cf_id = $("#question_41404944 > div:nth-child(3) > div:nth-child(2) > div > div > span").text().trim()
console.log("user codeforce handle is ", user_cf_id);
let answers_ids = [];
let total_points = new Decimal(0);
for(let i=0;i<answers_id_queries.length;i++){
let element = $(answers_id_queries[i]);
let the_id = element.text();
console.log("problem ", anwers_titles[i], " id: ", the_id);
let num_id = isValidInteger(the_id);
answers_ids.push(num_id.val);
if (num_id.valid){
let found_submission = submissions.find(obj => obj.id === num_id.val);
console.log(found_submission);
let isSameUser = found_submission.author.members[0].handle === user_cf_id;
if (!isSameUser) {
element.append("❌ different user handle found: ", found_submission.author.members[0].handle);
continue;
}
let problem_name = found_submission.problem.name;
if (problem_name != anwers_titles[i]){
element.append("❌ wrong problem: ", problem_name);
continue;
}
if (found_submission.points == undefined){
element.append("❌ no score found, verdict: ", found_submission.verdict);
continue;
}
element.append(" ✅ point: ", found_submission.points, " handle:", found_submission.author.members[0].handle, " problem: ", problem_name);
total_points = total_points.plus(found_submission.points);
}else{//invalid submission
element.text(the_id + " ❌ invalid submission id");
}
}
//insert total score before Report
let points_text = "total points: " + total_points + " subtract 5 by " + (Decimal.sub(5,total_points));
let points_html = points_html_template.replace("%points%", points_text);
if($('#bowman-total-points').length==0){
$(report_title_selector).before(points_html);
}else{
$('#bowman-total-points > span').text(points_text);
}
$("#bowman_super_btn").text(button_title);
$("#bowman_super_btn").prop('disabled', false);
})
.catch(error => {
console.log(error);
$("#bowman_super_btn").text(error + ' ' + button_title);
$("#bowman_super_btn").prop('disabled', false);
//reset scores
if($('#bowman-total-points').length!=0){
$('#bowman-total-points > span').text("no points available");
}
}
);
}
)
.catch(error => console.error('Error signing URL:', error));
});
});
})();