// ==UserScript==
// @name         Steam Hotkeys
// @namespace    http://tampermonkey.net/
// @version      0.1.1
// @description  Add hotkeys to navigate the Steam Discovery Queue
// @author       Lex
// @match        http://store.steampowered.com/*
// @require      https://code.jquery.com/jquery-3.2.1.min.js
// @require      https://greasyfork.org/scripts/5392-waitforkeyelements/code/WaitForKeyElements.js?version=115012
// @grant GM_setValue
// @grant GM_getValue
// @downloadURL none
// ==/UserScript==

(function($, undefined) {
    'use strict';

    // ASCII number or "a" letter
    var Hotkeys = new Map([
        ["KEY_ADD_TO_WISHLIST", "w"],
        ["KEY_NOT_INTERESTED", "s"],
        ["KEY_NEXT_QUEUE", "d"],
        ["KEY_NEXT_QUEUE2", "n"],
    ]);

    var ONE_CLICK_ADVANCE = true;
    var HOTKEYS_ENABLED = true;

    function loadSettings() {
        ONE_CLICK_ADVANCE = GM_getValue("ONE_CLICK_ADVANCE", ONE_CLICK_ADVANCE);
        HOTKEYS_ENABLED = GM_getValue("HOTKEYS_ENABLED", HOTKEYS_ENABLED);
    }

    function saveSettings() {
        GM_setValue("ONE_CLICK_ADVANCE", ONE_CLICK_ADVANCE);
        GM_setValue("HOTKEYS_ENABLED", HOTKEYS_ENABLED);
    }

    // Returns true if currently browsing a queue
    function inQueue() {
        return Boolean(document.querySelector("div.next_in_queue_content"));
    }

    function clickNextQueue() {
        document.querySelectorAll("div.btn_next_in_queue, #refresh_queue_btn, .queue_actions_ctn a[href='http://store.steampowered.com/explore/']")[0].click();
    }

    function doc_keyUp(e) {
        if (!HOTKEYS_ENABLED)
            return;
        if (document.activeElement.tagName === 'TEXTAREA' || document.activeElement.tagName === 'TEXT')
            return;
        switch (e.keyCode) {
            case Hotkeys.get("KEY_ADD_TO_WISHLIST"):
                let rm = document.querySelector("#add_to_wishlist_area_success:not([style*='none'])");
                let add = document.querySelector("#add_to_wishlist_area:not([style*='none']) a");
                (rm || add).click();
                if (ONE_CLICK_ADVANCE && inQueue()) {
                    let keyElement;
                    if (rm !== null)
                        keyElement = "#add_to_wishlist_area:not([style*='none']) a";
                    else if (add !== null)
                        keyElement = "#add_to_wishlist_area_success:not([style*='none'])";
                    waitForKeyElements(keyElement, clickNextQueue, true);
                }
                break;
            case Hotkeys.get("KEY_NOT_INTERESTED"):
                document.querySelector("div.queue_btn_ignore div:not([style*='none'])").click();
                if (ONE_CLICK_ADVANCE && inQueue()) {
                    waitForKeyElements("div.queue_btn_active:not([style*='none'])", clickNextQueue, true);
                }
                break;
            case Hotkeys.get("KEY_NEXT_QUEUE2"):
            case Hotkeys.get("KEY_NEXT_QUEUE"):
                if (inQueue() || document.querySelector("#refresh_queue_btn") !== null)
                    clickNextQueue();
                break;
            default:
                break;
        }
    }

    // Adds settings to the Customize your queue dialog box
    function addHotkeySettings() {
        var enableChecked = HOTKEYS_ENABLED ? `checked="checked"` : ``;
        var autoAdvance = ONE_CLICK_ADVANCE ? `checked="checked"` : ``;
        var HotKeysSettings = `<div style="float:right; width:50%"><div class="dq_settings_section_title">Hotkeys:</div>
                  <div class="dq_settings_checkrow"><input type="checkbox" id="sdqhotkeys_enabled" ${enableChecked}><label for="sdqhotkeys_enabled">Hotkeys enabled</label></div>
                  <div class="dq_settings_checkrow"><input type="checkbox" id="sdqhotkeys_autoadvance" ${autoAdvance}><label for="sdqhotkeys_autoadvance" title="Automatically go to the next game after adding to wishlist or marking not interested">Auto advance</label></div>
             </div>`;
        $(HotKeysSettings).prependTo($("div.dq_settings_content div.dq_settings_section:first"));
        $("#sdqhotkeys_enabled").change(function(){ HOTKEYS_ENABLED = Boolean(this.checked); saveSettings(); });
        $("#sdqhotkeys_autoadvance").change(function(){ ONE_CLICK_ADVANCE = Boolean(this.checked); saveSettings(); });
    }

    function main() {
        loadSettings();
        waitForKeyElements("div.dq_settings_content", addHotkeySettings, false);

        for (let [key, value] of Hotkeys) {
            if (typeof value === 'string')
                Hotkeys.set(key, value.toUpperCase().charCodeAt(0));
        }

        window.addEventListener('keydown', doc_keyUp, false);
    }

    main();
})(jQuery);