QCoder AC Problem List Highlighter

QCoderの問題一覧でAC済み問題を緑色にする

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(У мене вже є менеджер скриптів, дайте мені встановити його!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         QCoder AC Problem List Highlighter
// @namespace    https://qcoder.jp/
// @version      1.0.0
// @description  QCoderの問題一覧でAC済み問題を緑色にする
// @match        https://qcoder.jp/*
// @match        https://www.qcoder.jp/*
// @grant        none
// @license      MIT
// ==/UserScript==

(() => {
  'use strict';

  const m = location.pathname.match(/\/(?:ja|en)\/contests\/([^/]+)/);
  if (!m) return;

  const contestId = m[1];
  const isProblemList =
    /^\/(?:ja|en)\/contests\/[^/]+\/?$/.test(location.pathname);

  if (!isProblemList) return;

  const GREEN = '#dff6dd';
  const BORDER = '#2eaf4a';

  const norm = s => (s || '').replace(/\s+/g, ' ').trim();

  async function fetchAcceptedLabels() {
    const res = await fetch(`/api/contests/${contestId}/submissions/me`, {
      credentials: 'include',
    });

    if (!res.ok) return new Set();

    const submissions = await res.json();

    return new Set(
      submissions
        .filter(s => s.submissionStatusCode === 'AC')
        .map(s => s.problemLabel)
    );
  }

  function getProblemLabelFromRow(tr) {
    const firstCell = tr.querySelector('td');
    if (!firstCell) return null;

    const text = norm(firstCell.innerText || firstCell.textContent);
    const m = text.match(/^([A-Z]+\d+)/);
    return m ? m[1] : null;
  }

  function paint(acLabels) {
    document.querySelectorAll('tr').forEach(tr => {
      const label = getProblemLabelFromRow(tr);
      if (!label || !acLabels.has(label)) return;

      tr.style.backgroundColor = GREEN;
      tr.style.borderLeft = `8px solid ${BORDER}`;

      const a = tr.querySelector('a');
      if (a && !tr.querySelector('.qcoder-ac-badge')) {
        a.insertAdjacentHTML(
          'afterend',
          `<span class="qcoder-ac-badge" style="margin-left:8px;color:${BORDER};font-weight:bold;">AC</span>`
        );
      }
    });
  }

  fetchAcceptedLabels().then(paint);
})();