Bilibili 显示视频分区、av号等

在视频简介下方显示分区、av 号、分P标题、动态
目前为 2021-02-02 提交的版本。查看最新版本。
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// ==UserScript==
// @name        Bilibili 显示视频分区、av号等
// @namespace https://space.bilibili.com/517723/
// @version        0.01
// @description 在视频简介下方显示 分区、av 号、分P标题、动态
// @author        僠儖僲
// @include        https://www.bilibili.com/video/*
// @icon        https://www.bilibili.com/favicon.ico
// @compatible firefox
// @noframes
// @run-at        document-start
// ==/UserScript==
(()=>{
    'use strict';
    const ExterminatePJAX=false
    const once=(t,s,cb)=>new Promise(ok=>{
        cb=e=>{t.removeEventListener(s,cb,1);ok(e)}
        t.addEventListener(s,cb,1)
    }),doc=document,$=doc.querySelector.bind(doc)

    const root=window.unsafeWindow||window
    const rAF=cb=>setTimeout(cb,500)
    const waitElem=select=>new Promise((resolve,reject)=>{
        const next=()=>{try{
            el=$(select)
            el?resolve(el):rAF(next)
        }catch(e){reject(e)}}
        var el;next()
    })
    const vueHooker=app=>new Promise((resolve,reject)=>{
        const vm=app.__vue__
        if(vm){resolve(vm);return}
        const set=vm=>{
            if(!vm)return
            Object.defineProperty(app,'__vue__',{
                configurable: true,
                enumerable: true,
                value: vm,
                writable: true
            })
            resolve(vm)
        }
        Object.defineProperty(app,'__vue__',{
            configurable: true,
            enumerable: true,
            get(){return void 0},
            set(vm){set(vm)}
        })
    })
    const menu={
        set(list,cb){
            if(this.list)this.clear()
            this.list=list.map(title=>GM_registerMenuCommand(title,cb))
        },
        clear(){
            this.list.forEach(id=>GM_unregisterMenuCommand(id))
            this.list=null
        }
    }
    const _call=Function.prototype.call,
          saftyArrow=fn=>_call.bind(fn,null),
          eventStopPropagation=_call.bind(Event.prototype.stopPropagation)
    const getEl=(value,key='title')=>{
        var el=document.querySelector(`.video-desc>.info[${key}="${value}"]`)
        if(!el){
            el=document.createElement('div')
            el.className='info open'
            el.setAttribute(key,value)
            el.setAttribute('data-old',location.href)
            el.addEventListener('click',eventStopPropagation,1)
            document.querySelector('.video-desc').append(el)
        }
        return el
    }
    const _inject=(data)=>{
        /*var el=document.querySelector('.video-data>span[title=详细信息]')
        if(!el){
            el=document.createElement('span')
            el.title='详细信息'
            el.style.margin='0 12px'
            el.setAttribute('data-aid',data.aid)
            document.querySelector('.video-data').append(el)
        }*/
        data||(data=root.__INITIAL_STATE__.videoData)
        var av='av'+data.aid
        var list=[
            '分区:'+data.tname,av,data.bvid//,'cid='+root.cid
        ]
        //menu.set(list,inject)
        var p=location.search.match(/[?&]p=(\d+)/)
        var P=p?('?p='+p[1]):''
        getEl('分割线','data-title').innerText='\u3000'
        getEl('详细信息').innerHTML=list.join('\u3000')
            .replace(/av(\d+)(?!\w)/gi, '<a href="/video/av$1/'+P+'" target="_blank">av$1</a>')
            .replace(/(bv1)(\w{9})/gi,'<a href="/video/bv1$2/'+P+'" target="_blank">$1$2</a>')
        var page=data.pages[p?(p[1]-1):0]
        var title=page&&page.part
        getEl('分P标题').innerText=title==data.title?'分P标题与标题相同':('分P标题:'+title)
        getEl('动态').innerText=data.dynamic?'-----动态-----\n'+data.dynamic:'-----动态为空-----'
    }
    const inject=saftyArrow(_inject)
    once(doc,'DOMContentLoaded').then(async()=>{
        const app=await waitElem('#app,#viewlater-app,.app-wrap')
        const vm=await vueHooker(app)
        const {$root}=vm,{$router}=$root
        root.vm=vm
        if(ExterminatePJAX){
            $router.beforeEach((to,from,next)=>{
                var {p}=to.query
                p=p?'?p='+p:''
                location.href=to.path+p
                next(false)
            })
        }
        vm.$watch('videoData',inject)
        inject(vm.videoData)
    })
})()
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