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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 2020-01-14 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      1.3
// @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:100%;width:100%'
        image.setAttribute('av', '000000')
        box.id = 'my-cover-box'
        box.target = '_blank'
        box.appendChild(image)
        container.id = 'my-cover-container'
        container.style = 'position: relative; width: 320px; height: auto; overflow: hidden; border-radius: 2px; background: #eee;'
        container.appendChild(box)
        return container
    }
    // 初始化封面图显式框架
    function initStructure() {
        if (window.location.href.indexOf('bilibili.com/bangumi/play/') > 0) {
            var anchor  = document.getElementById('recom_module')
            var container = genStructure()
            container.style.marginBottom='12px'
            anchor.parentElement.removeChild(anchor.previousSibling)
            anchor.parentElement.insertBefore(container,anchor)
        } else {
            if (!document.getElementById('multi_page')) {
                var container = genStructure()
                var side = document.getElementById('slide_ad')
                side.parentNode.removeChild(side.previousSibling)
                side.parentNode.insertBefore(container, side)
            }
            else {
                var sidead = document.getElementById('slide_ad')
                if (sidead.childNodes.length > 0) {
                    var container = genStructure()
                    sidead.appendChild(container)
                } else {
                    requestAnimationFrame(function () {
                        initStructure()
                    })
                }
            }
        }
    }
    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.getElementsByClassName('slide-gg')[0];
        if (sidead) {
            sidead.parentElement.removeChild(sidead)
        }
        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()
})();