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BiliBili记住播放进度

记住B站视频或专辑播放进度

当前为 2020-11-20 提交的版本，查看 最新版本。

// ==UserScript==
// @author      yungyu16
// @name        BiliBili记住播放进度
// @description 记住B站视频或专辑播放进度
// @namespace   yungyu16/bilibili-helper
// @version     0.3
// @website     https://github.com/yungyu16/bilibili-helper
// @supportURL  https://github.com/yungyu16/bilibili-helper/issues
// @include     http*://www.bilibili.com/video/av*
// @include     http*://www.bilibili.com/video/BV*
// @require     https://lib.baomitu.com/qs/6.9.3/qs.min.js
// @require     https://lib.baomitu.com/jquery/3.5.1/jquery.slim.min.js
// @grant       GM_log
// @grant       GM_setValue
// @grant       GM_getValue
// @grant       GM_notification
// @grant       unsafeWindow
// ==/UserScript==

(function () {
    'use strict';

    const FLAG_DEBUG = true;

    let qs = window.Qs;
    let videoEl = $(".bilibili-player-video video").get(0);
    let videoId = extractCurVideoId();
    let settingKey = settingKeyBuilder(videoId);
    doWithDebugMode(() => GM_log("当前视频id：", videoId));
    main();

    function main() {
        let lastPage = GM_getValue(settingKey("lastPage"), 1);
        let lastTime = GM_getValue(settingKey("lastTime"), 0);
        let pageNo = extractCurPageNo();
        let pageList = $('.list-box li');
        let pageCount = pageList.length;
        doWithDebugMode(() => {
            GM_log("lastPage：", lastPage);
            GM_log("lastTime：", lastTime);
            GM_log("pageNo：", pageNo);
            GM_log("pageCount：", pageCount);
        })
        if (pageCount > 0 && (pageNo / 1) !== (lastPage / 1)) {
            location.href = `${videoId}?p=${lastPage}`
        }
        if (lastTime > 0) {
            setTimeout(() => {
                if (videoEl.currentTime > 10) {
                    GM_log("B站已自动同步播放进度,无需重新定位");
                    return;
                }
                videoEl.currentTime = lastTime;
                let progressMsg = `已定位到历史播放进度:${formatProgressSecond(lastTime)}`;
                doWithDebugMode(() => {
                    let notifyParam = {
                        title: "bilibili-helper",
                        text: progressMsg,
                        silent: true,
                        timeout: 3000,
                    };
                    GM_notification(notifyParam);
                })
                GM_log("progressMsg：", progressMsg);
                videoEl.play();
            }, 3 * 1000);
        }
        setInterval(persistPlayProgress, 5 * 1000);
    }

    function persistPlayProgress() {
        let pageNo = extractCurPageNo();
        let currentTime = videoEl.currentTime;
        GM_setValue(settingKey("lastPage"), pageNo);
        GM_setValue(settingKey("lastTime"), currentTime <= 0 ? 0 : currentTime);
        doWithDebugMode(() => GM_log("lastPage：", pageNo, ",lastTime:", formatProgressSecond(currentTime)));
    }

    function doWithDebugMode(action) {
        try {
            if (FLAG_DEBUG) {
                action();
            }
        } catch (e) {
            GM_log("Bhelper调试指令执行异常：", e);
        }
    }

    /**
     * 播放进度格式化
     * @param lastTime
     * @returns {string}
     */
    function formatProgressSecond(lastTime) {
        return `${Math.floor(lastTime / 60)}m${Math.floor(lastTime % 60)}s`;
    }

    /**
     * 拼接videoId av号、BV号
     * @param bv
     * @returns {function(*): string}
     */
    function settingKeyBuilder(bv) {
        return function (key) {
            return bv + ":" + key;
        }
    }

    /**
     * 抽取videoId av号、BV号
     */
    function extractCurVideoId() {
        let pathname = location.pathname;
        return pathname.substr(pathname.lastIndexOf('/') + 1);
    }

    /**
     * 抽取pageNo 当前集数
     */
    function extractCurPageNo() {
        let searchStr = location.search;
        if (!searchStr) {
            return 1;
        }
        let queryParams = qs.parse(searchStr.substr(1));
        return queryParams.p ? queryParams.p : 1;
    }
})();