auto_steam_queue.user.js

// ==UserScript==
// @name            Auto Steam Discovery Queue
// @namespace       https://steamcommunity.com/id/zetx/
// @description     Go to next game queued as soon as page is done loading.
// @include         http*://store.steampowered.com/*app/*
// @include         http*://store.steampowered.com/*explore*
// @include         http*://store.steampowered.com/*agecheck/app/*
// @version         4.05
// @run-at          document-end
// @grant           none
// ==/UserScript==

// See README.md for shout-outs <3

function auto_steam_queue() {

    var comeBackTomorrow = 'Come back tomorrow to earn more cards by browsing your Discovery Queue!';
    var notInRegion = 'This item is currently unavailable in your region';
    //var path = window.location.pathname.split('/')[1];
    var path = window.location.pathname.match(/\/([\w]+?)(?:\/|$)/).pop();

    // Create a 'control' UI for updates and running arbitrary queues
    var createUI = function() {
        var autoQueueContainerDiv = document.createElement('div');
        var autoQueueStatusDiv = document.createElement('div');
        var autoQueueControlsDiv = document.createElement('div');

        autoQueueContainerDiv.setAttribute('id', 'auto_queue');
        autoQueueContainerDiv.setAttribute('class', 'discovery_queue_customize_ctn');
        autoQueueContainerDiv.setAttribute('style', 'margin-top: 12px; margin-bottom: 12px !important;');

        autoQueueStatusDiv.setAttribute('id', 'auto_queue_status');
        autoQueueStatusDiv.setAttribute('style', 'display: inline');

        autoQueueControlsDiv.setAttribute('id', 'auto_queue_controls');
        autoQueueControlsDiv.setAttribute('style', 'float: right');

        autoQueueContainerDiv.appendChild(autoQueueStatusDiv);
        autoQueueContainerDiv.appendChild(autoQueueControlsDiv);

        document.getElementsByClassName('discovery_queue_apps')[0].getElementsByTagName('h2')[0].insertAdjacentHTML('afterend', autoQueueContainerDiv.outerHTML);
    };

    // Add the controls for running arbitrary queues
    var populateControls = function() {
        var controlsContainer = document.getElementById('auto_queue_controls');

        var form = document.createElement('form');
        var input = document.createElement('input');
        var span = document.createElement('span');
        var button = document.createElement('button');

        form.setAttribute('id', 'auto_queue_form');
        form.setAttribute('style', 'display: inline');

        input.setAttribute('type', 'number');
        input.setAttribute('min', '1');
        input.setAttribute('step', '1');
        input.setAttribute('id', 'queue_num');
        input.setAttribute('placeholder', '# of queues to run');

        span.textContent = 'Run';

        button.setAttribute('type', 'submit');
        button.setAttribute('class', 'btnv6_blue_hoverfade btn_tiny');
        button.appendChild(span);

        form.appendChild(input);
        form.appendChild(button);

        controlsContainer.innerHTML = form.outerHTML;

        document.getElementById('auto_queue_form').addEventListener('submit', completeNumQueues, false);
    };

    // On submit, do numQueues worth of queues
    var completeNumQueues = function(event) {
        event.preventDefault();

        var numQueues = document.getElementById('queue_num').value;

        generateAndCompleteQueue(0, numQueues);
    };

    // Sets status updates for the control UI
    var setStatus = function(newStatus) {
        if (document.getElementById('auto_queue_status') === null) {
            return;
        }

        document.getElementById('auto_queue_status').textContent = 'Queue Status: ' + newStatus;
    };

    // Tells Steam to generate a new queue then runs through the appids to clear 'em off the queue
    var generateAndCompleteQueue = function(currentQueueNum, maxQueueNum) {
        setStatus('Queue #' + (++currentQueueNum));

        $J.post('https://store.steampowered.com/explore/generatenewdiscoveryqueue', {
            sessionid: g_sessionID,
            queuetype: 0
        }).done(function(data) {
            var appsCleared = [];

            data.queue.forEach(function(appId) {
                appsCleared.push(
                    $J.post('https://store.steampowered.com/app/60', {
                        appid_to_clear_from_queue: appId,
                        sessionid: g_sessionID
                    })
                );
            });

            Promise.all(appsCleared).then(function() {
                if (currentQueueNum < maxQueueNum) {
                    generateAndCompleteQueue(currentQueueNum, maxQueueNum);
                } else {
                    setStatus('Finished ' + currentQueueNum + ' queue(s).');
                    UpdateNotificationCounts();
                }
            }, function(reason) {
                console.log('Bad: ' + reason);
            });
        });
    };

    // Actions for /explore*
    var explorePageActions = function() {
        if (document.getElementsByClassName('discovery_queue_apps').length) {
            createUI();
            populateControls();
        }

        if ($J('.discovery_queue_winter_sale_cards_header').length) {
            if (!$J('.discovery_queue_winter_sale_cards_header:contains(' + comeBackTomorrow + ')').length) {
                setStatus('Starting queues...');
                generateAndCompleteQueue(0, 3);
            }
        }

        setStatus('Waiting...');
    };

    // Auto-submitted old-style age checks
    var ageCheckPageActions = function() {
        // https://store.steampowered.com/agecheck/app/*

        $("span:contains('Enter')");
        $J('#ageYear').val(1915).trigger('change');
        DoAgeGateSubmit();
    };

    // Actions for /app* including new-style age checks
    var appPageActions = function() {
        if (window.location.pathname.split('/')[3] === 'agecheck') {
            document.getElementsByClassName('btn_grey_white_innerfade btn_medium')[0].click();
        } else if ($J('.error:contains(' + notInRegion + ')').length) {
            var unavailable_app = window.location.pathname.split('/')[2];
            $J.post('/app/7', {
                sessionid: g_sessionID,
                appid_to_clear_from_queue: unavailable_app
            }).done(function(data) {
                window.location = 'https://store.steampowered.com/explore/next';
                $J('.error').html($J('.error').html() + '<br />(Removing from queue)');
            }).fail(function() {
                $J('.error').html($J('.error').html() + '<br />(Could not remove from queue. Reload or try <a href="https://www.reddit.com/r/Steam/comments/3r2k4y/how_do_i_complete_discovery_queue_if_every_queue/cwkrrzf">removing manually.</a>)');
            });
        }
        /*
         else if ( $J('#next_in_queue_form').length ) {
             $J('.queue_sub_text').text('Loading next in queue');
             $J('#next_in_queue_form').submit();
         }
         */
    };

    if (path === 'explore') {
        explorePageActions();
    } else if (path === 'app') {
        appPageActions();
    } else if (path === 'agecheck') {
        ageCheckPageActions();
    }

}

addJS_Node(null, null, auto_steam_queue);

//-- This is a standard-ish utility function:
function addJS_Node(text, s_URL, funcToRun, runOnLoad) {
    var D                                   = document;
    var scriptNode                          = D.createElement ('script');
    if (runOnLoad) {
        scriptNode.addEventListener ("load", runOnLoad, false);
    }
    scriptNode.type                         = "text/javascript";
    if (text)       scriptNode.textContent  = text;
    if (s_URL)      scriptNode.src          = s_URL;
    if (funcToRun)  scriptNode.textContent  = '(' + funcToRun.toString() + ')()';

    var targ = D.getElementsByTagName ('head')[0] || D.body || D.documentElement;
    targ.appendChild (scriptNode);
}