YouTube Mobile Repeated Recommendations Hider

Hides any videos that are recommended more than 2 times at the mobile homepage
当前为 2021-01-04 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name            YouTube Mobile Repeated Recommendations Hider
// @description     Hides any videos that are recommended more than 2 times at the mobile homepage
// @version         1.5.1
// @author          BLBC (github.com/hjk789, greasyfork.org/users/679182-hjk789)
// @copyright       2020+, BLBC (github.com/hjk789, greasyfork.org/users/679182-hjk789)
// @homepage        https://github.com/hjk789/Creations/tree/master/JavaScript/Userscripts/YouTube-Mobile-Repeated-Recommendations-Hider
// @license         https://github.com/hjk789/Creations/tree/master/JavaScript/Userscripts/YouTube-Mobile-Repeated-Recommendations-Hider#license
// @match           https://m.youtube.com
// @grant           GM.setValue
// @grant           GM.getValue
// @grant           GM.listValues
// @grant           GM.deleteValue
// @namespace https://greasyfork.org/users/679182
// ==/UserScript==

//**********************

const maxRepetitions = 2    // The maximum number of times that the same recommended video is allowed to appear on your
                            // homepage before starting to get hidden. Set this to 1 if you want one-time recommendations.
//**********************

let processedVideosList

GM.listValues().then(function(GmList) 
{
    processedVideosList = GmList

    const recommendationsContainer = document.querySelector(".rich-grid-renderer-contents")

    const firstVideos = recommendationsContainer.querySelectorAll("ytm-rich-item-renderer")

    for (let i=0; i < firstVideos.length; i++)
        processRecommendation(firstVideos[i])


    const loadedRecommendedVideosObserver = new MutationObserver(function(mutations) 
    {
        for (let i=0; i < mutations.length; i++)
            processRecommendation(mutations[i].addedNodes[0])
    })

    loadedRecommendedVideosObserver.observe(recommendationsContainer, {childList: true})
})

async function processRecommendation(node)
{
    if (!node) return
    
    const videoTitleEll = node.querySelector("h3")
    const videoTitleText = videoTitleEll.textContent
    const videoUrl = videoTitleEll.parentElement.href
    
    if (processedVideosList.includes("hide::"+videoUrl) || processedVideosList.includes("hide::"+videoTitleText))
        node.style.display = "none"
    else
    {
        if (maxRepetitions == 1)
        {
            GM.setValue("hide::"+videoUrl,"")
            return
        }
        else 
            var value = await GM.getValue(videoUrl)
        
        if (typeof value == "undefined")
            value = 1
        else
        {
            if (value >= maxRepetitions)
            {
                node.style.display = "none"

                GM.deleteValue(videoUrl)
                GM.setValue("hide::"+videoUrl,"")
                return
            }

            value++
        }
        
        GM.setValue(videoUrl, value)
    }
    
}