// ==UserScript==
// @name         学人VIP
// @namespace    studyVIP.taozhiyu.gitee.io
// @version      0.2
// @description  解锁图文
// @author       涛之雨
// @match        *://gbr.businessreview.global/articles/view/*
// @icon         https://gbr.businessreview.global/img/GBR-logo_black_50x50.png
// @require      https://cdn.bootcdn.net/ajax/libs/hls.js/1.0.8-0.canary.7807/hls.min.js
// @require      https://cdn.bootcdn.net/ajax/libs/blueimp-md5/2.19.0/js/md5.min.js
// @require      https://cdn.bootcdn.net/ajax/libs/jszip/3.7.1/jszip.min.js
// @require      https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.slim.min.js
// @require      https://cdn.jsdelivr.net/gh/gildas-lormeau/zip.js@2.4.7/dist/zip-full.min.js
// @antifeature  tracking ============================================>>>说明：我们仅会在经济学人文章阅读页面收集您使用本插件的情况，以帮助作者了解插件的用户数量。这个操作仅会收集您的IP地址信息，不包含您鼠标、键盘点击在内的所有操作，没有任何安全风险，不会产生性能损耗。为了保护您的知情权以及使用体验，特告知于您。本插件系开源脚本，所有代码均可查看源码，请您放心安装。 <<<============================================
// @grant        unsafeWindow
// @run-at       document-start
// @license      GPL3.0
// ==/UserScript==
/*global Hls zip md5 $*/
/* jshint esversion: 8 */
(function() {
    'use strict';
    const path = location.pathname.split("/"),lang = path[4];

    fetch('https://api.hummingbird.businessreview.global/api/article?id=' + path[3]).then(a=>a.json()).then(tao=>{
        var script = document.createElement("script");
        script.type = "text/javascript";
        script.src = "//js.users.51.la/21234891.js";
        document.body.appendChild(script);
        const Dom=document.querySelector(".maincontent");
        Dom.innerHTML='';
        document.querySelectorAll(".store_btns,.cover").forEach(a=>a.remove());
        tao.body.content.map(a=>{
            switch (a.type) {
                case "image":
                    for (const i of a.data) {
                        if (i.lang === lang) {
                            Dom.innerHTML+=`<figure><img src="https://businessreviewglobal-cdn.com/article_images/${path[3]}/${encodeURIComponent(i.image_path)}" alt="" class="img-responsive"><figcaption>&ZeroWidthSpace;</figcaption></figure>`;
                            break;
                        }
                    }
                    break;
                case "paragraph":
                    for (const i of a.data) {
                        if (i.lang === lang) {
                            Dom.innerHTML+=`<p>${i.text}</p>`;
                            break;
                        }
                    }
                    break;
                case "subtitle":
                    //似乎没什么用？
                    break;
                case "video":
                    for (const i of a.data) {
                        if (i.lang === lang) {
                            const url=i.url;
                            if(Hls.isSupported()) {
                                const vid=btoa((Math.random()+"").slice(2)).substr(0,10);
                                Dom.innerHTML+=`<video id=v_${vid} controls style="width: -webkit-fill-available;"></video>`;
                                var video = document.getElementById(`v_${vid}`);
                                var hls = new Hls();
                                var m3u8Url = decodeURIComponent(url);
                                hls.loadSource(m3u8Url);
                                // hls.on(Hls.Events.MANIFEST_PARSED,function() {
                                //     video.play();
                                // });
                                hls.attachMedia(video);
                            }else Dom.innerHTML+=`<br><p>不支持hls播放器</p><br>`;
                            break;
                        }
                    }
                    break;
                default:
                    console.log("未识别的类型",a);
            }
        });
        const verifyZipPassword = async (file, password) => {
            let reader, mp3blob = "";
            try {
                reader = new zip.ZipReader(new zip.BlobReader(file), { password });
                const entries = await reader.getEntries();
                // for (const entry of entries) {
                try {
                    const audioBlob = await entries[0].getData(new zip.BlobWriter());
                    // audioBlob.type = 'mp3';
                    var newreader = new FileReader();
                    newreader.addEventListener("loadend", function(){
                        const newAudioBlob=new Blob([newreader.result],{type: 'mp3'});
                        mp3blob = URL.createObjectURL(audioBlob);
                        $(".progress").hide();
                        $("#TPlayer").show();
                        document.querySelector('#TPlayer').src=mp3blob;
                    });
                    newreader.readAsArrayBuffer(audioBlob);
                } catch (error) {
                    return { state: false, error };
                }
                // }
            } finally {
                if(reader&&reader.close)await reader.close();
            }
            return {state: true,url:mp3blob};
        };
        const requestmp3=async (mp3zipurl)=>{
            try{
                const rep=await fetch(mp3zipurl).catch(a=>console.log('无音频'));
                //console.log(rep.headers.get('Content-Length'));
                if (rep.ok) {
                    //console.log("请求数据");
                    $('body').append($('<div style="position:fixed;left:0px;width:97vw;padding-right:60px;bottom:3%;margin-bottom:-12px;height: 54px;display:flex;align-items:center;"><div class="progress progress-striped active" style="width: 100%;margin-bottom: unset;"><div class="progress-bar progress-bar-success"><span class="sr-only">0%</span></div></div><audio id="TPlayer" src="" controls style="width: 100%;display: none;"></audio></div>'));
                } else {
                    //console.log("请求失败")
                    return;
                }
                let size = 0;
                const body = rep.body,
                      len = rep.headers.get('Content-Length');
                const reader = body.getReader();
                const steam=await new ReadableStream({
                    start(controller) {
                        return pump();
                        function pump() {
                            return reader.read().then(res => {
                                const { done, value } = res;
                                if (done) {
                                    console.log("end");
                                    controller.close();
                                    $(".progress-bar span").text('100%');
                                    return;
                                }
                                size += value.length || 0;
                                var rate = (100 * size / Number(len)).toFixed(2) + "%";
                                $(".progress-bar").width(rate);
                                $(".progress-bar span").text(rate);
                                controller.enqueue(value);
                                return pump();
                            });
                        }
                    }
                });
                const blob=await (new Response(steam)),
                      a = await blob.blob();
                verifyZipPassword(a, md5('2q09kj876$A&21786351+_))l;k98zTRWE%$#*&^'+mp3zipurl.split("/").pop()))
                    .then(a=>{
                    URL.revokeObjectURL(a);
                })
                    .catch(err => console.error(err));
            }catch(e){
                console.log(e);
            }
        };
        requestmp3("https://businessreviewglobal-cdn.com/"+tao.publication_date.substr(0,7)+'/audio/'+path[3]+'_mp3.zip');
    });
})();