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B站视频集合剩余观看时间显示

B站视频集合剩余观看时间显示.

// ==UserScript==
// @name          B站视频集合剩余观看时间显示
// @description   B站视频集合剩余观看时间显示.
// @include       https://www.bilibili.com/video/*
// @version       0.0.3
// @author        zszdmzmm
// @namespace https://greasyfork.org/users/1147321
// ==/UserScript==
const pageType1 = ["div.video-section-list", "div.video-episode-card__info-duration", ".play-num"];
const pageType2 = ["ul.list-box", "ul.list-box div.duration", "div.head-left"];
let pageType = [pageType1, pageType2];
let selectorStringSet;
let isVideoListPage = false;
let isFlag = true;
for (let i = 0; i < pageType.length; i++) {
    if (document.querySelector(pageType[i][0])) {
        selectorStringSet = pageType[i];
        isVideoListPage = true;
    }
}

window.addEventListener("load", function (e) {
    run();
})


window.addEventListener("keyup", function (e) {
    if (e.key === "Control") {
        isFlag = !isFlag;
        if (document.querySelector("div.remainTime")) {
            document.querySelector("div.remainTime").remove();
        }if(isFlag){
            run();
        }
    }
})


function run(){
    if (isVideoListPage) {
        //每秒执行一次
        let id = setInterval(function () {
            if (isFlag) {
                let timeElement = document.querySelectorAll(selectorStringSet[1]);
                //let timeElement = pageElementsAdapter("div.video-episode-card__info-duration", "ul.list-box div.duration");
                //集合视频总时长
                let videoTimeSum = 0;
                //开始计算剩余时间标志
                let isStart = false;
                //循环每一个时间元素
                timeElement.forEach(function (element) {
                    let imgStyle = element.parentElement.querySelector("img");
                    //判断正在播放的视频，改变开始计算的标志的状态
                    if (!(imgStyle.hasAttribute("style")) || imgStyle.getAttribute("style") === "") {
                        isStart = true;
                    }
                    //计算每个视频的时长，相加
                    if (isStart) {
                        let singleTime = getSeconds(element.innerText);
                        videoTimeSum += singleTime;
                    }

                })
                //装目前视频所在时间位置
                let currentVideoSeconds = 0;
                //获取相关元素并从总时长中减去已观看时间
                let currentVideoSecondsElement = document.querySelector("span.bpx-player-ctrl-time-current");
                if (currentVideoSecondsElement) {
                    currentVideoSeconds = getSeconds(currentVideoSecondsElement.innerText);
                    videoTimeSum -= currentVideoSeconds;
                }
                //对总时长的表现格式进行处理
                let hour, minute, second;
                hour = Math.floor(videoTimeSum / 3600);
                minute = Math.floor(videoTimeSum / 60) % 60;
                second = videoTimeSum % 60;
                minute = timePattenParse(minute);
                second = timePattenParse(second);
                let finalTimeString = hour + ":" + minute + ":" + second;
                //在网页中显示剩余时长
                let element = document.createElement("div");
                element.innerText = "剩余时长:" + finalTimeString;
                element.className = "remainTime";
                element.style = "margin-right: 8px";
                if (!document.querySelector("div.remainTime")) {
                    document.querySelector(selectorStringSet[2]).after(element);
                } else {
                    document.querySelector("div.remainTime").innerText = element.innerText;
                }
            }else{
                clearInterval(id);
            }
            //爬取集合中包含视频时间的元素
        }, 1000);
}
}


//将时间正常表达形式转化为秒数并返回
function getSeconds(timeString) {
    let timeArr = timeString.split(":");
    let timeSecond = 0;
    for (let i = 0; i < timeArr.length; i++) {
        timeSecond = timeSecond * 60 + parseInt(timeArr[i]);
    }
    return timeSecond;
}

//将不规范的秒，分钟表达式整理规范
function timePattenParse(timeNum) {
    if (timeNum < 10) {
        return "0" + timeNum;
    }
    return timeNum;
}