Remove Important YouTube Notifications

Removes the "Important" section in the YouTube notification menu, putting the notifications whithin it back to their appropriate position in the notification list.

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

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

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name        Remove Important YouTube Notifications
// @namespace   greasyfork.org/en/users/1436613
// @match       https://www.youtube.com/*
// @version     1.2.3
// @license     MIT
// @author      gosha305
// @description Removes the "Important" section in the YouTube notification menu, putting the notifications whithin it back to their appropriate position in the notification list.
// ==/UserScript==

let orderOfPrecedence = ["justnow", "secondsago", "minuteago", "minutesago", "hourago", "hoursago", "dayago", "daysago", "weekago", "weeksago", "monthago", "monthsago", "yearago", "yearsago"];
let lookedUpOrderOfPrecedence = false;
let regularNotificationPanel;
let importantNotificationPanel;

const menuRemover = new CSSStyleSheet();
document.adoptedStyleSheets.push(menuRemover);

let rule = menuRemover.cssRules[menuRemover.insertRule("#sections yt-multi-page-menu-section-renderer:has(ytd-notification-renderer),ytd-popup-container #sections:has(ytd-notification-renderer) #section-title {}")];
rule.style.setProperty("display", "none");

(async function(){
  //to avoid infinitely waiting for the popup on pages with YouTube embeds
  if (!window.location.href.startsWith("https://www.youtube.com/")){
    return;
  }

  let popupContainer;
  function findPopup(resolve){
    popupContainer = document.querySelector("ytd-popup-container")
    if (!popupContainer){
      setTimeout(() => findPopup(resolve), 200);
    } else {
      resolve();
    }
  }
  await new Promise(findPopup);

  const popupObserver = new MutationObserver(function(){
    const notificationMenu = document.querySelector("ytd-popup-container")?.lastChild
    if (notificationMenu?.nodeName == "TP-YT-IRON-DROPDOWN"){
            const notificationObserver = new MutationObserver(function(mutationList){replaceNotifications(mutationList);});
      notificationObserver.observe(notificationMenu, {attributes: true});
      popupObserver.disconnect();
    }
  });
    popupObserver.observe(popupContainer, {childList: true, subtree:true})


  function replaceNotifications(mutationList){
    const notificationsMenus = document.querySelectorAll("yt-multi-page-menu-section-renderer:has(ytd-notification-renderer)");
    if (!notificationsMenus || !notificationsMenus.length){
            return;
    }
    const importantNotifications =  notificationsMenus[0].querySelectorAll("#items > ytd-notification-renderer");
    if (!importantNotifications || !importantNotifications.length) {
            return;
    }
    regularNotificationPanel = notificationsMenus[1];
    if (!regularNotificationPanel){
      notificationsMenus[0].style.display = "unset";
      return;
    }
    regularNotificationPanelItems = regularNotificationPanel.querySelector("#items");

    lookedUpOrderOfPrecedence = false;
    importantNotifications.forEach(notification => {regularNotificationPanelItems.insertBefore(notification,findAppropriatePosition(notification))});
        regularNotificationPanel.style.display = "unset";
  }

  function findAppropriatePosition(element){
    const elementParts = element.querySelector(".metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)").textContent.split(" ");
    let nonNumberPartsRank = orderOfPrecedence.indexOf(elementParts.filter(e => isNaN(Number(e))).join(''));
    if (!lookedUpOrderOfPrecedence && nonNumberPartsRank == -1){
      orderOfPrecedence = getOrderOfPrecendence()
      lookedUpOrderOfPrecedence = true;
      nonNumberPartsRank = orderOfPrecedence.indexOf(elementParts.filter(e => isNaN(Number(e))).join(''));
    }
    const NumberParts = elementParts.find(e => !isNaN(Number(e)))
    const rep = Array.from(regularNotificationPanel.querySelectorAll("ytd-notification-renderer")).find(e => !compareUploadDateText(e.querySelector(".metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)").textContent, nonNumberPartsRank, NumberParts));
    return rep;
  }

  //look up the order of notifications already in the panel to determine which words represent minutes/hours/days/months/years if the notifications aren't in English

  function getOrderOfPrecendence(){
    const seen = new Set();
    const nonNumberDateParts = Array.from(regularNotificationPanel.querySelectorAll("ytd-notification-renderer .metadata.style-scope.ytd-notification-renderer > yt-formatted-string:nth-of-type(2)")).map(e => e.textContent.split(" ").filter(part => isNaN(Number(part))).join(''));
    return nonNumberDateParts.filter(e => {if (seen.has(e)) return false; seen.add(e); return true;})
  }

  function compareUploadDateText(date1, nonNumberPartsRank2,date2NumberParts){
    const date1Parts = date1.split(" ");
    const nonNumberPartsRank1 = orderOfPrecedence.indexOf(date1Parts.filter(e => isNaN(Number(e))).join(''));
    if (nonNumberPartsRank1 < nonNumberPartsRank2){
      return true;
    } else if (nonNumberPartsRank1 > nonNumberPartsRank2){
      return false;
    } else {
      return Number(date1Parts.find(e => !isNaN(Number(e)))) < date2NumberParts
    }
  }
})();