Tewind m3u8 downloader

tewind_m3u8_downloader.user.js

// ==UserScript==
// @name         Download tewind m3u8
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://tewind.kr/rewind/*
// @match        https://tewind.kr/liveback/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=tewind.kr
// @grant        none
// ==/UserScript==

(() => {
    const downloadPlaylist = () =>{
        alert('m3u8 다운로드를 시도합니다.', true);

        if(!liveback) {
            alert('작동하지 않네요');
            return;
        }

        liveback.downloadPlaylist = async function () {
            const donwloadBlob = (function () {
                const a = document.createElement("a");
                document.body.appendChild(a);
                a.style = "display: none";
                return function (objectUrl, fileName) {
                    try {
                        a.href = objectUrl;
                        a.download = fileName;
                        a.click();
                        window.URL.revokeObjectURL(objectUrl)
                    } catch (_) {
                        alert('파일 다운로드 에러');
                    }
                };
            }());

            let infor = await server.jsonRequest(`/API/vod/${this.type}`, server.makeParam({
                key: this.key
            }))


            if (infor.response !== 200) {
                alert(infor.message);
                return;
            }

            const playlistFilenameRaw = `[${infor.content.channel}][${infor.content.category}] ${infor.content.title}`;
            const playlistFilename = `${playlistFilenameRaw.slice(0, 250)}.m3u8`;

            switch (this.type) {
                case 'liveback':{
                if (infor.content.tsDuration == null) {
                        return;
                    }

                    let m3u8 = [
                        '#EXTM3U',
                        '#EXT-X-VERSION:3',
                        '#EXT-X-PLAYLIST-TYPE:VOD',
                        '#EXT-X-TARGETDURATION:6',
                        '#EXT-X-MEDIA-SEQUENCE:0'
                    ]
                    for (let i = 0; i < infor.content.list.length; i++) {
                        m3u8.push(`#EXTINF:${infor.content.tsDuration}`);
                        m3u8.push(`${env.cdn.segment}/${infor.content.bid}/${infor.content.list[i]}.ts`);
                    }
                    m3u8.push('#EXT-X-ENDLIST');

                    const obj = new Blob([m3u8.join('\n')])
                    donwloadBlob(URL.createObjectURL(obj), playlistFilename);
                    //URL.revokeObjectURL(objectURL)
                    break;
                }


                case 'rewind':{
                    const playlistUrl = `${env.cdn.segment}/${this.key}/${infor.content.src}`;
                    const res = await fetch(playlistUrl);
                    const content = await res.blob();
                    donwloadBlob(URL.createObjectURL(content), playlistFilename);
                    break;
                }
            }
        };

        liveback.downloadPlaylist();
    }


    const buttonParent = document.getElementById('streamInfo');

    const playlistDownloadButton = document.createElement('button');
    playlistDownloadButton.id = 'downloadPlaylist';
    playlistDownloadButton.onclick = downloadPlaylist
    playlistDownloadButton.classList = "button primary small display";
    playlistDownloadButton.style = "width: 100px; float: right; "

    playlistDownloadButton.innerText = 'm3u8';
    buttonParent.appendChild(playlistDownloadButton);

})();