Displays your approximate ranking percentile among all active AtCoder users on your profile page.
// ==UserScript==
// @name AtCoder - You're top X% (only for algorithm ranking)
// @namespace https://gist.github.com/k1832/9438a1469bb2fa94d26702e1556aff97
// @version 1.2
// @description Displays your approximate ranking percentile among all active AtCoder users on your profile page.
// @author k1832 (Keita Morisaki)
// @match https://atcoder.jp/users/*
// @license MIT License, Copyright (c) 2024 Keita Morisaki
// @grant GM_xmlhttpRequest
// ==/UserScript==
(function () {
'use strict';
const url = new URL(window.location.href);
const contestType = url.searchParams.get('contestType');
if (contestType === 'algo' || contestType === null) {
/*
* EN: Fetch the total number of active AtCoder users from a JSON file hosted on GitHub.
* JA: GitHub でホストされている JSON ファイルから、AtCoder のアクティブユーザーの総数を取得します。
*
* API implementation/host: https://github.com/k1832/atcoder-api
*/
GM_xmlhttpRequest({
method: "GET",
url: "https://k1832.github.io/atcoder-api/api/v1/total-active-users.json",
onload: function (response) {
const data = JSON.parse(response.responseText);
const totalCount = data.val;
let rankNode = document.evaluate(
'//th[text()="順位" or text()="Rank"]/following-sibling::td',
document,
null,
XPathResult.ANY_TYPE,
null
).iterateNext();
if (!rankNode) {
console.error('Ranking element not found.');
return;
}
const rankText = rankNode.textContent;
// "8956th" -> 8956
const rank = parseInt(rankText.slice(0, -2), 10);
const percentage = rank / totalCount * 100;
rankNode.textContent += ` (top ${percentage.toFixed(2)}%)`;
},
onerror: function (error) {
console.error('Error fetching user count:', error);
}
});
}
})();