YouTube patch collection

feel free to modify

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         YouTube patch collection
// @version      0.1
// @description  feel free to modify
// @author       daylin
// @match *://*.youtube.com/*
// @match *://*.youtu.be/*
// @icon         https://www.youtube.com/favicon.ico
// @run-at       document-start
// @grant        none
// @namespace https://greasyfork.org/users/1132181
// ==/UserScript==

// polyfill for chrome :vomit:
(function() {
    if ("onbeforescriptexecute" in document) return;

    let scriptWatcher = new MutationObserver(mutations => {
        for (let mutation of mutations) {
            for (let node of mutation.addedNodes) {
                if (node.tagName === "SCRIPT") {
                    let syntheticEvent = new CustomEvent("beforescriptexecute", {
                        detail: node,
                        cancelable: true
                    })

                    if (!document.dispatchEvent(syntheticEvent)) {
                        node.remove();
                    }
                }
            }
        }
    })
    scriptWatcher.observe(document, {
        childList: true,
        subtree: true
    })
})();

(function() {

    const EXP_MOD_POLYMER_JS = false;
    const OLD_POLYMER_JS_CONTENT = fetch("https://www.youtube.com/s/desktop/18069be1/jsbin/desktop_polymer.vflset/desktop_polymer.js");

    function modifyJson(json) {

        json.EXPERIMENT_FLAGS.kevlar_updated_logo_icons = false;
        json.EXPERIMENT_FLAGS.kevlar_updated_icons = false;
        json.EXPERIMENT_FLAGS.kevlar_system_icons = false;
        json.EXPERIMENT_FLAGS.kevlar_watch_color_update = false;
        json.EXPERIMENT_FLAGS.desktop_mic_background = false;
        json.EXPERIMENT_FLAGS.kevlar_unavailable_video_error_ui_client = false;
        json.EXPERIMENT_FLAGS.kevlar_center_search_results = false;
        json.EXPERIMENT_FLAGS.kevlar_watch_metadata_refresh = false;
        json.EXPERIMENT_FLAGS.web_snackbar_ui_refresh = false;
        json.EXPERIMENT_FLAGS.web_guide_ui_refresh = false;
        json.EXPERIMENT_FLAGS.web_sheets_ui_refresh = false;
       // json.EXPERIMENT_FLAGS.web_darker_dark_theme = true; //

        json.WEB_PLAYER_CONTEXT_CONFIGS
            .WEB_PLAYER_CONTEXT_CONFIG_ID_KEVLAR_WATCH
            .serializedExperimentFlags = modifyPlayerExperiments(
                json.WEB_PLAYER_CONTEXT_CONFIGS
                .WEB_PLAYER_CONTEXT_CONFIG_ID_KEVLAR_WATCH
                .serializedExperimentFlags
            );

        startHtmlMods();

        // ------------------------------- //

        return JSON.stringify(json);
    }

    function modifyPlayerExperiments(text) {
        var flags = deserialiseFlags(text);

        // perform your modifications here;
        // due to the encoding of these, the value
        // will always be a string (rather than a bool,
        // for instance)

        flags.web_player_move_autonav_toggle = "false";
        flags.web_settings_menu_icons = "false";

        // ------------------------------- //

        var response = serialiseFlags(flags);
        return response;
    }

    function serialiseFlags(json) {
        var keys = Object.keys(json),
            response = "";

        for (var i = 0, j = keys.length; i < j; i++) {
            if (i > 0) {
                response += "&";
            }
            response += keys[i] + "=" + json[keys[i]];
        }

        return response;
    }

    function deserialiseFlags(text) {

        var a = text.split("&"),
            obj = {};

        for (var i = 0, j = a.length; i < j; i++) {
            var b = a[i].split("=");
            var key = b[0];
            var val = b[1];
            obj[key] = val;
        }

        return obj;
    }

    function extractYtConfigJson(text) {
        const open = "ytcfg.set(";
        const close = ");";

        var a = text.split(open);
        var b = a[1].split(close);
        return b[0];
    }

    function modifyYtConfig(text) {
        var originalJson = extractYtConfigJson(text);
        var parsedJson = JSON.parse(originalJson);

        var modifiedJson = modifyJson(parsedJson);

        var newText = text.replace(originalJson, modifiedJson);
        return newText;
    }

    function startHtmlMods() {
        document.getElementsByTagName('html')[0].removeAttribute('system-icons');
    }

    async function waitForElm(s) {
        while (document.querySelector(s) === null) {
            await new Promise(r => requestAnimationFrame(r))
        }
        return document.querySelector(s);
    }

    async function modPolymerJs(srcUrl) {
        var a = document.createElement("script");
        a.src = srcUrl;
        document.body.appendChild(a);
    }

    const handleScript = (e) => {
        let script = e.details || e.target;

        if (script.textContent.search("ytcfg.set") > -1) {
            script.textContent = modifyYtConfig(script.textContent);
        } else if (EXP_MOD_POLYMER_JS && script.src.search("desktop_polymer") > -1) {
            script.textContent = OLD_POLYMER_JS_CONTENT;
        }
    };

    document.addEventListener("beforescriptexecute", handleScript);

})();

(function() {var css = [
	"/*right column*/",
	"  [d*=\"M10 14.65v-5.3L15 12l-5 2.65zm7.77-4.33c-.77-.32-1.2-.5-1.2-.5L18 9.06c1.84-.96 2.53-3.23 1.56-5.06s-3.24-2.53-5.07-1.56L6 6.94c-1.29.68-2.07 2.04-2 3.49.07 1.42.93 2.67 2.22 3.25.03.01 1.2.5 1.2.5L6 14.93c-1.83.97-2.53 3.24-1.56 5.07.97 1.83 3.24 2.53 5.07 1.56l8.5-4.5c1.29-.68 2.06-2.04 1.99-3.49-.07-1.42-.94-2.68-2.23-3.25zm-.23 5.86l-8.5 4.5c-1.34.71-3.01.2-3.72-1.14-.71-1.34-.2-3.01 1.14-3.72l2.04-1.08v-1.21l-.69-.28-1.11-.46c-.99-.41-1.65-1.35-1.7-2.41-.05-1.06.52-2.06 1.46-2.56l8.5-4.5c1.34-.71 3.01-.2 3.72 1.14.71 1.34.2 3.01-1.14 3.72L15.5 9.26v1.21l1.8.74c.99.41 1.65 1.35 1.7 2.41.05 1.06-.52 2.06-1.46 2.56z\"] {",
	"    d: path(\"M17.77 10.32c-.77-.32-1.2-.5-1.2-.5L18 9.06c1.84-.96 2.53-3.23 1.56-5.06s-3.24-2.53-5.07-1.56L6 6.94c-1.29.68-2.07 2.04-2 3.49.07 1.42.93 2.67 2.22 3.25.03.01 1.2.5 1.2.5L6 14.93c-1.83.97-2.53 3.24-1.56 5.07.97 1.83 3.24 2.53 5.07 1.56l8.5-4.5c1.29-.68 2.06-2.04 1.99-3.49-.07-1.42-.94-2.68-2.23-3.25zM10 14.65v-5.3L15 12l-5 2.65z\")",
	"  }"
].join("\n");
if (typeof GM_addStyle != "undefined") {
	GM_addStyle(css);
} else if (typeof PRO_addStyle != "undefined") {
	PRO_addStyle(css);
} else if (typeof addStyle != "undefined") {
	addStyle(css);
} else {
	var node = document.createElement("style");
	node.type = "text/css";
	node.appendChild(document.createTextNode(css));
	var heads = document.getElementsByTagName("head");
	if (heads.length > 0) {
		heads[0].appendChild(node);
	} else {
		// no head yet, stick it whereever
		document.documentElement.appendChild(node);
	}
}
})();