Greasemonkey Extension for creating a Markdown Link to the current page

MarkdownLinker.user.js

// ==UserScript==
// @name         MarkdownLinker
// @namespace    https://github.com/rjf89
// @version      1.0.4
// @description  Press a hotkey to copy a Markdown link of the current page to the clipboard.
// @author       rjf89
// @match        *://*/*
// @grant        GM_setClipboard
// @updateURL    https://gist.github.com/rf5860/181f6ef630585d777333a0d79d6dafbb/raw/MarkdownLinker.user.js
// @downloadURL  https://gist.github.com/rf5860/181f6ef630585d777333a0d79d6dafbb/raw/MarkdownLinker.user.js
// ==/UserScript==

(function () {
    'use strict';
    const CONFIG = {
        MARKDOWN: {
            hotkey: 'c',
            ctrlKey: true,
            shiftKey: false,
            altKey: true,
            format: '[{linkText}]({pageUrl})',
            name: 'Markdown'
        },
        ASCIIDOC: {
            hotkey: 'c',
            ctrlKey: false,
            shiftKey: true,
            altKey: true,
            format: '{pageUrl}[{linkText}]',
            name: 'AsciiDoc'
        }
    };

    const createAndCopyLink = (format, ty) => {
        const pageUrl = window.location.href;
        const pageTitle = document.title;
        const selectedText = window.getSelection().toString().trim();
        const linkText = selectedText || pageTitle;

        GM_setClipboard(format.replace('{linkText}', linkText).replace('{pageUrl}', pageUrl));
    };

    const createAndCopyAsciiDocLink = () => {
        createAndCopyLink('{pageUrl}[{linkText}]');
        showNotification('Copied AsciiDoc Link!');
    };

    const createAndCopyMarkdownLink = () => {
        createAndCopyLink('[{linkText}]({pageUrl})');
        showNotification('Copied Markdown Link!');
    };

    const showNotification = (message) => {
        const notification = document.createElement('div');
        notification.textContent = message;

        notification.setAttribute('style', `
            position: fixed !important;
            top: 20px !important;
            right: 20px !important;
            padding: 12px 20px !important;
            background-color: rgba(0, 0, 0, 0.75) !important;
            color: white !important;
            border-radius: 8px !important;
            z-index: 999999 !important;
            font-size: 16px !important;
            font-family: sans-serif !important;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2) !important;
            opacity: 1;
            transition: opacity 0.5s ease-out !important;
        `);

        document.body.appendChild(notification);

        setTimeout(() => {
            notification.style.opacity = '0';
            setTimeout(() => { document.body.removeChild(notification); }, 500);
        }, 2000);
    };

    const getHotkey = (configs, event) => Object.values(configs).find(c =>
        c.hotkey === event.key.toLowerCase() &&
        c.ctrlKey === event.ctrlKey &&
        c.shiftKey === event.shiftKey &&
        c.altKey === event.altKey
    )

    document.addEventListener('keydown', (event) => {
        const hotkey = getHotkey(CONFIG, event);
        if (hotkey) {
            event.preventDefault();
            event.stopPropagation();
            createAndCopyLink(hotkey.format);
            Object.keys
            showNotification(`Copied ${hotkey.name} Link!`);
            return;
        }
    });
})();