Copy the release date of a torrent on nyaa to the clipboard (great for adding files to anidb)

NyaaCopyReleaseDate.user.js

// ==UserScript==
// @name         Nyaa - Copy Release Date (YYYY-MM-DD)
// @namespace    https://gist.github.com/natyusha
// @version      1.0
// @description  Copy the release date of a torrent on nyaa to the clipboard (great for adding files to anidb)
// @match        https://*.nyaa.si/*
// @grant        GM_setClipboard
// ==/UserScript==

(function () {
    'use strict';

    function addCopyButton(td) {
        if (!td.hasAttribute('data-timestamp') || td.querySelector('.copy-date-btn')) return;

        const fullDate = td.textContent.trim();
        const shortDate = fullDate.split(' ')[0];

        const btn = document.createElement('button');
        btn.textContent = '📋';
        btn.title = `Copy date: ${shortDate}`;
        btn.className = 'copy-date-btn';
        btn.style.cssText = `
            margin-left: .5em;
            cursor: pointer;
            background: none;
            border: none;
            width: 2em;
            text-align: center;
        `;

        btn.onclick = (e) => {
            e.preventDefault();
            e.stopPropagation();

            // Copy
            if (typeof GM_setClipboard !== 'undefined') {
                GM_setClipboard(shortDate);
            } else {
                navigator.clipboard.writeText(shortDate);
            }

            // Feedback: Clipboard -> Checkmark
            btn.textContent = '✅';
            setTimeout(() => btn.textContent = '📋', 700);
        };

        td.appendChild(btn);
    }

    function process() {
        document.querySelectorAll('td[data-timestamp]').forEach(addCopyButton);
    }

    // Run on load
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', process);
    } else {
        process();
    }

    // Re-run on navigation
    const origPushState = history.pushState;
    history.pushState = function () {
        origPushState.apply(this, arguments);
        setTimeout(process, 100);
    };
    window.addEventListener('popstate', () => setTimeout(process, 100));
})();