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bilibili视频合集增加倒序按钮，点击按钮后，合集支持倒序播放，方便从头开始追剧！
// ==UserScript==
// @name bilibili视频合集倒序
// @namespace http://tampermonkey.net/
// @version 0.62
// @description bilibili视频合集增加倒序按钮，点击按钮后，合集支持倒序播放，方便从头开始追剧！
// @author zyb
// @match https://www.bilibili.com/video/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=bilibili.com
// @grant none
// @license MIT
// @require https://update.greasyfork.org/scripts/479598/1311136/MyJSCodeLibrary.js
// ==/UserScript==
(async function () {
'use strict';
// Your code here...
/**
* bilibili视频合集倒序，支持倒序播放视频
*/
class BiliBliVideoCollectionReverse extends MyJSCodeLibrary{
// 存储视频合集数据
videoCollectionArr = [[]];
// 当前正在播放的视频合集的下标
videoCollectionArrIndex = 0;
// 下一个播放的视频合集的下标
nextVideoCollectionArrIndex = null;
// 当前正在播放的视频下标
videoIndex = 0;
// 下一个播放的视频dom
nextVideoDom = null;
// 下一个播放的视频下标
nextVideoIndex = null;
// bilibili新样式className，方便后续替换
classNameStrObj = {
headDomClassName: ".base-video-sections-v1 .video-sections-head .video-sections-head_second-line",
collectDataDomClassName: ".second-line_left",
subscriptionCollectionBtnDomClassName: ".second-line_right",
videoDomClassName: ".bpx-player-video-wrap video",
videoSectionListClassName: ".video-section-list",
videoEpisodeCardClassName: ".video-section-list .video-episode-card",
}
// 正在播放的合集视频className标识
PLAYING_VIDEO_CLASSNAME = "video-episode-card__info-playing";
constructor() {
super();
this.init();
}
async init() {
// 存储this指针
const _this = this;
// 创建css样式
const styleText = `
.base-video-sections-v1 .video-sections-head_second-line .second-line_right {
width: 70px;
height: 24px;
border: 1px solid #00AEEC;
border: 1px solid var(--brand_blue);
text-align: center;
color: #00AEEC;
color: var(--brand_blue);
border-radius: 2px;
background: #F1F2F3;
background: var(--bg3);
outline: none;
cursor: pointer;
}
`;
_this.createStyleFuc(styleText);
// 异步获取当前正在播放的视频合集区域的顶部dom节点
const headDom = await _this.getDomByTimeoutAsyncFuc(_this.classNameStrObj.headDomClassName, 3000);
// 区分普通视频和合集视频
if (!headDom) {
console.log("视频不是合集模式");
return;
}
const collectDataDom = headDom.querySelectorAll(_this.classNameStrObj.collectDataDomClassName)[0];
const subscriptionCollectionBtnDom = headDom.querySelectorAll(_this.classNameStrObj.subscriptionCollectionBtnDomClassName)[0];
// 创建倒序按钮
const reverseBtnDom = document.createElement("button");
reverseBtnDom.innerHTML = "倒序";
reverseBtnDom.setAttribute("class", _this.classNameStrObj.subscriptionCollectionBtnDomClassName.slice(1));
reverseBtnDom.onclick = () => {
// 重置下一个播放的视频的数据
_this.nextVideoCollectionArrIndex = null;
_this.nextVideoIndex = null;
_this.nextVideoDom = null;
// 将视频合集倒序处理
_this.reverseVideos();
// 切换按钮
reverseBtnDom.innerHTML = ("倒序" === reverseBtnDom.innerHTML) ? "还原" : "倒序";
};
// 按顺序插入倒序按钮
headDom.innerHTML = "";
headDom.appendChild(collectDataDom);
headDom.appendChild(reverseBtnDom);
headDom.appendChild(subscriptionCollectionBtnDom);
// 异步获取当前正在播放的视频dom节点
let videoDom = await _this.getDomByTimeoutAsyncFuc(_this.classNameStrObj.videoDomClassName, 3000);
// 监听视频播放结束事件
videoDom.addEventListener("ended", function () { //结束
console.log("播放结束");
if (!_this.nextVideoDom) {
return;
}
_this.nextVideoDom.click();
}, false);
// 监听视频播放开始事件
videoDom.addEventListener("play", function () { //开始
console.log("开始播放");
// 获取视频合集dom，并转为数组
const videoSectionsItemArr = Array.from(document.querySelectorAll(_this.classNameStrObj.videoSectionListClassName));
videoSectionsItemArr.forEach((videoSectionsItem, itemIndex) => {
// 获取当前子项下的.video-section-list合集dom节点，并转为数组
const list = Array.from(videoSectionsItem.querySelectorAll(_this.classNameStrObj.videoEpisodeCardClassName));
list.forEach((dom, index) => {
// 判断当前正在播放的视频位置
_this.getItemAndVideoIndex(dom, index, itemIndex);
})
})
// 计算接下来要播放的视频下标
_this.setNextVideoIndex();
}, false);
}
/**
* 将视频合集倒序
*/
async reverseVideos() {
// 存储this指针
const _this = this;
/**
* 存储在windows中的合集视频数据
* this.__INITIAL_STATE__.videoData.ugc_season.sections[0].episodes
*/
// 获取视频合集dom，并转为数组
let videoSectionsItemArr = Array.from(document.querySelectorAll(_this.classNameStrObj.videoSectionListClassName));
/**
* 若videoSectionsItemArr.length大于1
* 则表明当前合集存在多个子项
*/
videoSectionsItemArr.forEach((videoSectionsItem, itemIndex) => {
// 获取当前子项下的.video-section-list合集dom节点，并转为数组
let list = Array.from(videoSectionsItem.querySelectorAll(_this.classNameStrObj.videoEpisodeCardClassName));
// 存储倒序处理后的合集视频dom数组
_this.videoCollectionArr[itemIndex] = list.reverse();
// 清空子项节点，并插入倒序处理后的视频dom节点
videoSectionsItem.innerHTML = "";
_this.videoCollectionArr[itemIndex].forEach((dom, index) => {
// 判断当前正在播放的视频位置
_this.getItemAndVideoIndex(dom, index, itemIndex);
videoSectionsItem.appendChild(dom);
})
// 计算接下来要播放的视频下标
_this.setNextVideoIndex();
})
}
/**
* 获取当前正在播放的合集子项和视频的下标
* @param {HTMLBodyElement} dom 视频dom节点
* @param {number} index 对应的视频合集下标
* @param {number} itemIndex 合集子项的下标
*/
getItemAndVideoIndex(dom, index, itemIndex) {
// 存储this指针
const _this = this;
// 判断当前正在播放的视频位置
if (dom.childNodes[0].className.includes(_this.PLAYING_VIDEO_CLASSNAME)) {
// 记录当前正在播放的视频合集下标
_this.videoCollectionArrIndex = itemIndex;
// 记录当前正在播放的视频下标
_this.videoIndex = index
}
}
/**
* 计算接下来要播放的视频下标
*/
setNextVideoIndex() {
// 存储this指针
const _this = this;
/**
* 如果下一个播放的视频下标超出当前视频合集子项内的视频数量
* 则播放下一个合集子项的第一个视频
* 否则播放当前视频合集子项的下一个视频
*/
if ((_this.videoIndex + 1) >= _this.videoCollectionArr[_this.videoCollectionArrIndex].length) {
/**
* 如果下一个播放的视频子项下标超出当前视频合集子项的数量
* 则停止播放
* 否则播放下一个合集子项的第一个视频
*/
if (_this.videoCollectionArrIndex + 1 >= _this.videoCollectionArr.length) {
_this.nextVideoIndex = 0;
_this.nextVideoCollectionArrIndex = 0;
_this.nextVideoDom = null;
} else {
_this.nextVideoIndex = 0;
_this.nextVideoCollectionArrIndex = _this.videoCollectionArrIndex + 1;
}
} else {
_this.nextVideoIndex = _this.videoIndex + 1;
_this.nextVideoCollectionArrIndex = _this.videoCollectionArrIndex;
}
_this.nextVideoDom = _this.videoCollectionArr[_this.nextVideoCollectionArrIndex][_this.nextVideoIndex];
console.log("----------setNextVideoIndex-----------");
console.log("nextVideoDom", _this.nextVideoDom);
console.log("nextVideoCollectionArrIndex:", _this.nextVideoCollectionArrIndex, ",nextVideoIndex:", _this.nextVideoIndex)
console.log("----------setNextVideoIndex-----------");
}
}
let biliBliVideoCollectionReverse = new BiliBliVideoCollectionReverse();
})();