Tamper Monkey: Steam Free License Batch Remover

foo.js

// ==UserScript==
// @name         Steam Free License Batch Remover
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://store.steampowered.com/account/licenses/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=simply-how.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // 	function RemoveFreeLicense( packageID, encodedPackageName )
    // 	{
    // 		var dialog = ShowConfirmDialog( 'Remove License', 'Are you sure you want to remove "%s" from your account?'.replace( /%s/, atob( encodedPackageName ) ) );

    // 		dialog.done( function() {
    // 			$J.ajax(
    // 				{
    // 					url: 'https://store.steampowered.com/account/removelicense',
    // 					type: 'POST',
    // 					data:
    // 					{
    // 						sessionid : "<your session id>",
    // 						packageid : packageID
    // 					},
    // 					success: function ( response ) {
    // 						if ( response.success == 1 )
    // 						{
    // 							top.location.reload();
    // 						}
    // 						else
    // 						{
    // 							ShowAlertDialog( 'Error', 'An error was encountered while processing your request:' + response.success );
    // 						}
    // 					}
    // 				}
    // 			)
    // 		} )
    // 	}

    const url = "https://store.steampowered.com/account/removelicense";
    const session_id = '<your session id>'

    function send_rq(packageID) {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", url, true);
        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');

        xhr.onreadystatechange = function () {
            if (xhr.readyState === 4 && xhr.status === 200) {
                console.log(xhr.responseText);
            }
        };
        var data = [];
        data.push(`sessionid=${encodeURIComponent(session_id)}`);
        data.push(`packageid=${encodeURIComponent(packageID)}`);
        const urlEncodedData = data.join('&').replace(/%20/g, '+');
        xhr.send(urlEncodedData);
    }

    var licenses = document.getElementsByClassName('free_license_remove_link');
    var i = 1;
    const lim = 15;
    console.log('found ' + licenses.length + ' free games');
    for (const license of licenses) {
        for (const node of license.childNodes) {
            if (node.nodeType != 1) {
                continue;
            }
            const inner = node.href;
            const m = /javascript:RemoveFreeLicense\(\s?(\d+),\s?\'.+\'\s?\)/g.exec(inner);
            if (m == null) {
                continue;
            }
            const packageID = m[1];

            setTimeout(function(){
                 send_rq(packageID);
            }, i*200);
        }

        if (i++ > lim) {
            break;
        }
    }
d})();