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bilibili封面替换右侧广告

脚本将视频右侧的广告替换为视频封面

当前为 2020-03-23 提交的版本，查看 最新版本。

// ==UserScript==
// @name         bilibili封面替换右侧广告
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  脚本将视频右侧的广告替换为视频封面
// @author       You
// @match        *://www.bilibili.com/video/*
// @match        *://www.bilibili.com/bangumi/play/*
// @grant        none
// ==/UserScript==

(function () {
    function genStructure() {
        var container = document.createElement('div')
        var box = document.createElement('a')
        var image = document.createElement('img')
        image.id = 'my-cover-image'
        image.style = 'height:auto;width:100%;display:block;'
        image.setAttribute('av', '000000')
        box.id = 'my-cover-box'
        box.target = '_blank'
        box.style.fontSize = '0px'
        box.appendChild(image)
        container.id = 'my-cover-container'
        container.style = 'position: absolute; width: 320px; height: auto; overflow: hidden; border-radius: 2px; background: #eee;z-index:99;'
        container.appendChild(box)
        return container
    }

    //封面框架嵌入
    function initStructure() {
        var container = genStructure()
        var side = document.getElementsByClassName('r-con')[0]
        var sideRect = side.getBoundingClientRect()
        container.style.width = sideRect.width
        container.style.left = sideRect.x.toString() + 'px'
        container.style.top = sideRect.y.toString() + 'px'
        document.body.appendChild(container)
    }
    initStructure()

    // 封面图绑定函数
    function setImage(url, avNo) {
        document.getElementById('my-cover-image').src = url
        document.getElementById('my-cover-image').setAttribute('av', avNo)
        document.getElementById('my-cover-box').href = url
    }

    // 获取meta
    function getMateByProperty(preoerty) {
        var metas = document.head.getElementsByTagName('meta')
        for (var i in metas) {
            if (metas[i].getAttribute('property') == preoerty) {
                return metas[i]
            }
        }
        return undefined
    }

    // 在meta获取失败时用api获取封面图地址
    function loadImage(avNo) {
        var apiurl = 'https://api.bilibili.com/x/web-interface/search/type?search_type=video&keyword='
        var xhr = new XMLHttpRequest()
        xhr.open('GET', apiurl + avNo, true)
        xhr.onload = function () {
            if (this.status === 200) {
                var rtx = this.responseText
                var imgurl = rtx.match(/"pic":"(.*?)",/)[1]
                var ci = document.getElementById('my-cover-image')
                if (ci.src.indexOf(imgurl) < 0) {
                    setImage(imgurl, avNo)
                }
            }
        }
        xhr.send()
    }

    // 常驻检查器
    function init() {

        var sideAd = document.getElementById('slide_ad')
        var sideAdRect = sideAd.getBoundingClientRect()
        var container = document.getElementById('my-cover-container')
        var containerRect = container.getBoundingClientRect()
        if(containerRect.x != sideAdRect.x){
            container.style.left = sideAdRect.x.toString()+'px'
        }
        if(containerRect.y != sideAdRect.y){
            container.style.top = sideAdRect.y.toString()+'px'
        }
        if(sideAdRect.height != containerRect.height){
            sideAd.style.height = containerRect.height.toString()+'px'
        }

        var urlMeta = getMateByProperty('og:url')
        var coverMeta = getMateByProperty('og:image')
        if (urlMeta && coverMeta && document.getElementById('my-cover-image')) {
            var avNo = urlMeta.getAttribute('content').match(/av[0-9]+/)
            var imgurl = coverMeta.getAttribute('content')
            var image = document.getElementById('my-cover-image')
            if (image.getAttribute('src') != imgurl || image.getAttribute('av') != avNo) {
                setImage(imgurl, avNo)
            }
        }
        requestAnimationFrame(function () {
            init();
        })
    }
    init()
})();