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EduZhiXin Controller

Use arrow keys to control the video of EduZhixin.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

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// ==UserScript==
// @name         EduZhiXin Controller
// @name:zh-cn   质心教育视频播放控制器
// @namespace    eduzhixincontroller
// @version      0.3
// @description  Use arrow keys to control the video of EduZhixin.
// @author       _Kerman
// @match        https://www.eduzhixin.com/page/live/**
// @icon         https://www.eduzhixin.com/favicon.ico
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    let msg = "";
    let tmpMsg = null;
    let tmpMsgStartTime = null;
    let tmpMsgTimeout = null;

    let neverPlayed=true;

    const fontSize = "25px"

    let retryCnt = 0;

    function fmtSec(value) {
        let result = value;
        let h = Math.floor(result / 3600)
        < 10
        ? "0" + Math.floor(result / 3600)
        : Math.floor(result / 3600);
        let m = Math.floor((result / 60) % 60)
        < 10
        ? "0" + Math.floor((result / 60) % 60)
        : Math.floor((result / 60) % 60);
        let s = Math.floor(result % 60)
        < 10
        ? "0" + Math.floor(result % 60)
        : Math.floor(result % 60);

        let res = "";
        if (h !== "00") res += `${h}时`;
        if (h!=="00" || m !== "00") res += `${m}分`;
        res += `${s}秒`;

        return res;
    }

    function main(){
        let v = document.getElementsByTagName("video")[0];
        let loadedTag = document.getElementsByClassName("prism-progress-loaded")[0];

        if(!v){
            retryCnt++;
            if(retryCnt>100)throw new Error();
            setTimeout(main,1000);
            return;
        }

        const deltaPBR = 0.2
        const sDeltaPBR = 0.1
        const deltaT = 10
        const sDeltaT = 5

        document.onkeydown=function(e){
            let c = e.keyCode;
            let s = e.shiftKey;
            let p = true;
            if(c===38){
                v.playbackRate+=s?sDeltaPBR:deltaPBR;
            }else if(c=== 40){
                v.playbackRate-=s?sDeltaPBR:deltaPBR;
            }else if(c===37){
                v.currentTime-=s?sDeltaT:deltaT;
            }else if(c===39){
                v.currentTime+=s?sDeltaT:deltaT;
            }else if(c===13){
                if(!window.player.fullscreenService.isFullScreen){
                    let btn = document.getElementsByClassName("prism-fullscreen-btn")[0];
                    btn.click();
                    setTmpMsg("Fullscreen.");
                }
            }else{
                p=false;
                if(c===32){
                    if(neverPlayed){
                        let btn = document.getElementsByClassName("prism-big-play-btn loading-center")[0];
                        if(btn.style.display!=="none"){
                            btn.click();
                        }
                        let btn2 = document.getElementsByClassName("prism-fullscreen-btn")[0];
                        if(!window.player.fullscreenService.isFullScreen){
                            btn2.click();
                        }
                    }
                }else{
                    return;
                }
            }
            update();
            if(p){
                e.preventDefault();
            }
        }

        let bkgr = document.createElement("div")
        bkgr.style.position = "fixed"
        bkgr.style.background="black"
        bkgr.style.zIndex=100000
        bkgr.style.width="100%"
        bkgr.style.left="0"
        bkgr.style.fontSize=fontSize;
        bkgr.style.height="1.2em"
        bkgr.style.bottom="0px"


        let progLoaded = document.createElement("div")
        progLoaded.style.position = "fixed"
        progLoaded.style.background="#555555"
        progLoaded.style.zIndex=100001
        progLoaded.style.width="0%"
        progLoaded.style.left="0"
        progLoaded.style.fontSize=fontSize;
        progLoaded.style.height="1.2em"
        progLoaded.style.bottom="0px"

        let prog = document.createElement("div")
        prog.style.position = "fixed"
        prog.style.background="grey"
        prog.style.zIndex=100002
        prog.style.width="0%"
        prog.style.left="0"
        prog.style.fontSize=fontSize;
        prog.style.height="1.2em"
        prog.style.bottom="0px"

        let tip = document.createElement("div")
        tip.innerHTML="Initializing"
        tip.style.position = "fixed"
        tip.style.background="transparent"
        tip.style.color="white"
        tip.style.zIndex=100003
        tip.style.width="100%"
        tip.style.left="0"
        tip.style.fontSize=fontSize;
        tip.style.height="1.2em"
        tip.style.bottom="0px"
        tip.style.textAlign="left"
        tip.style.fontFamily="Cascadian,Consolas"

        v.parentElement.parentElement.appendChild(bkgr)
        v.parentElement.parentElement.appendChild(progLoaded)
        v.parentElement.parentElement.appendChild(prog)
        v.parentElement.parentElement.appendChild(tip)

        v.addEventListener('playing', function () {
            neverPlayed=false;
            msg="Playing.";
            update();
        });
        v.addEventListener('waiting', function () {
            msg="Loading."
            update();
        });
        v.addEventListener('pause', function () {
            msg="Paused."
            update();
        });
        v.addEventListener('ended', function () {
            msg="Ended."
            update();
        });

        setTimeout(()=>{
            window.player._switchLevel(window.player._hls.levels[2].url)
        },1000)

        function setTmpMsg(m,out = 3000){
            tmpMsg=m;
            tmpMsgTimeout = out;
            tmpMsgStartTime = Date.now();
            update();
        }

        function update(){
            let date = new Date();
            let hour = ("0"+date.getHours()).slice(-2);
            let minute = ("0"+date.getMinutes()).slice(-2);

            if(tmpMsg){
                if(Date.now()-tmpMsgStartTime>tmpMsgTimeout){
                    tmpMsg=null;
                    tmpMsgStartTime=null;
                    tmpMsgTimeout=null
                }
            }

            let m = tmpMsg??msg;

            //let loadedPercent = parseInt(loadedTag.style.width.slice(0,-1));

            tip.innerHTML=
                `<div style="position:absolute;left:5%">${fmtSec(v.currentTime)} / ${fmtSec(v.duration)} (${(100*v.currentTime/v.duration).toFixed()}%)</div>
            <div style="position:absolute;left:40%">x${v.playbackRate.toFixed(1)}</div>
            <div style="position:absolute;left:70%">${m}</div>
            <div style="float:right;font-size:smaller">${hour}:${minute}</div>`
            prog.style.width=(100*v.currentTime/v.duration)+"%"
            progLoaded.style.width=loadedTag.style.width

            document.querySelector(".proton-award-box .confirm-button")?.click()
        }

        setInterval(update,1000);

        msg="Ready."

    }

    setTimeout(main,3000);

})();