https://github.com/m417z/winbindex/issues/1

winbindex-download-file-name-helper.user.js

// ==UserScript==
// @name         Winbindex download file name helper
// @namespace    https://winbindex.m417z.com/
// @version      0.1.1
// @description  Gives sane names to downloaded files (https://github.com/m417z/winbindex/issues/1)
// @author       m417z
// @match        https://winbindex.m417z.com/*
// @match        https://msdl.microsoft.com/?*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=m417z.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // https://stackoverflow.com/a/64123890
    async function download(url, cb) {
        const elProgress = document.getElementById('progress');
        function progress({loaded, total}) {
            const p = Math.round(loaded/total*100)+'%';
            elProgress.innerHTML = p;
            document.title = `[${p}] ` + document.title.replace(/\[\d+%\] /, '');
        }

        const response = await fetch(url);
        if (!response.ok) {
            throw new Error(`Server error: ${response.status}`);
        }

        const contentLength = response.headers.get('content-length');
        const total = parseInt(contentLength, 10);
        let loaded = 0;

        const res = new Response(new ReadableStream({
            async start(controller) {
                const reader = response.body.getReader();
                for (;;) {
                    const {done, value} = await reader.read();
                    if (done) break;
                    loaded += value.byteLength;
                    progress({loaded, total});
                    controller.enqueue(value);
                }
                controller.close();
            },
        }));
        return await res.blob();
    }

    // https://stackoverflow.com/a/32261263
    function popupWindow(url, windowName, win, w, h) {
        const y = win.top.outerHeight / 2 + win.top.screenY - (h / 2);
        const x = win.top.outerWidth / 2 + win.top.screenX - (w / 2);
        return win.open(url, windowName, `toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width=${w}, height=${h}, top=${y}, left=${x}`);
    }

    if (window.location.hostname === 'msdl.microsoft.com') {
        const params = new URLSearchParams(window.location.search);
        const path = params.get('path');
        const name = params.get('name');
        if (path && name) {
            document.write(`
                <h2>Downloading <span id="name"></span>...</h2>
                <h3 id="progress"></h3>
            `);
            document.getElementById('name').textContent = name;
            document.title = name + ' - downloading...';

            download(path).then(blob => {
                const downloadLink = document.createElement('a');
                downloadLink.href = window.URL.createObjectURL(blob);
                downloadLink.download = name;
                document.body.appendChild(downloadLink);
                downloadLink.click();

                window.close();
            }).catch(error => {
                document.getElementById('progress').textContent = `🛑 ${error}`;
                document.title = `[Error] ${document.title}`;
            });
        }
        return;
    }

    if (window.location.hostname === 'winbindex.m417z.com') {
        document.addEventListener('click', function (e) {
            if (e.target.tagName === 'A' && e.target.href?.startsWith('https://msdl.microsoft.com/download/symbols/')) {
                const columns = e.target.parentElement.parentElement.children;
                const arch = columns[3].textContent;
                const version = columns[4].textContent;
                const path = new URL(e.target.href).pathname;
                const original_filename = e.target.href.replace(/^.*\//, '');
                const name = original_filename.replace(/\./, `_${version}_${arch}.`);
                popupWindow(
                    'https://msdl.microsoft.com/?' + new URLSearchParams({ path, name }),
                    '_blank',
                    window,
                    400,
                    200
                );
                e.stopPropagation();
                e.preventDefault();
            }
        }, true);
        return;
    }
})();