// ==UserScript==
// @name 慕课网 下载视频
// @namespace https://github.com/Ahaochan/Tampermonkey
// @version 0.2.5
// @description 获取视频下载链接，使用方法：进入任意课程点击下载即可。如http://www.imooc.com/learn/814
// @author Ahaochan
// @match *://www.imooc.com/learn/*
// @grant GM_xmlhttpRequest
// @grant GM_setClipboard
// @require https://code.jquery.com/jquery-2.2.4.min.js
// ==/UserScript==
(function () {
'use strict';
var total;
var videoes = [];
var clarityType = ['超清', '高清', '普清'], outTextType = ['idm', 'raw', 'xml', 'json'];
var config = [
['清晰度 : ', clarityType, 0],//最后一个代表当前选择的
['导出格式 : ', outTextType, 0]
];
//是否在解析中
var loading = true;
init();
function init() {
var $medias = $('.mod-chapters').find('a.J-media-item');
total = $medias.length;
var len = total;
//添加标签
$('.course-menu').append(
$('<li><a href="javascript:void(0)"><span id="downOn">视频解析中...</span></a></li>').on('click', function () {
if (loading) return;
$(this).unbind().parent().find('li a').removeClass('active');
$(this).find('a').addClass('active');
display();
}));
if(!isLogin){
$('#downOn').text('视频解析异常(请登录)');
return;
}
//遍历获取下载链接
$($medias).each(function (k, v) {
var vid = $(this).parent().attr('data-media-id');
var name = $(this).text();
var pattern = /\(\d\d:\d\d\)/;
if (!pattern.test(name)) {
total--;
if (k == len - 1 && !total) {
$('#downOn').text('视频下载(0)');
}
return;
}
name = name.replace(/\s\s+|\(\d\d:\d\d\)/g, '');
v3(vid, name, $(this));
});
}
/**
* 渲染html
*/
function display() {
var modChapters = $('.mod-chapters');
modChapters.html('');
//类型选择
$.each(config, function (k, v) {
var $chapter = $('<div class="chapter"><h3><span class="icon-drop_down js-close .js-open js-open"></span><strong></strong></h3><ul class="video"></ul></div>');
var ul = $chapter.children('ul');
$chapter.find('strong').html('<i class="icon-chapter"></i>' + v[0] + v[1][0]);
$.each(v[1], function (i, e) {
ul.append('<li><a href="javascript:void(0)" class="J-media-item"><i class="icon-tick-revert done"></i><i class="icon-video type"></i>' + e + '</a></li>');
});
modChapters.append($chapter);
});
var area = '<div style="margin-top:24px;">' +
'<div style="border:1px solid #b7bbbf;box-sizing:border-box;border-radius:2px;">' +
'<textarea id="down-textarea" style="width:97%;min-height:100px;padding:8px;color:#555;resize:none;line-height:18px;"></textarea>' +
'</div>' +
'<div style="float:right;"><button type="button" id="btnCopy" style="background-color:#00b43c;height:40px;padding:0' +
' 12px;line-height:40px;text-align:center;color:#fff;cursor:pointer;margin-top:20px;border-radius:2px;">复制code</button></div>' +
'</div>';
modChapters.append(area);
$('.J-media-item').on('click', function () {
var $ul = $(this).parent();
var $chapter = $ul.parent().parent();
var $title = $chapter.find('h3 strong');
var a = modChapters.find('.chapter').index($chapter);
var b = modChapters.find('.chapter').eq(a).find('ul li').index($ul);
if (a >= 0 && b >= 0) {
config[a][2] = b;
$title.html('<i class="icon-chapter"></i>' + config[a][0] + config[a][1][b]);
$('#down-textarea').text(getTextLinks());
}
});
$('#btnCopy').on('click',function () {
GM_setClipboard($('#down-textarea').text());
var t = $(this).text('已复制到剪贴板');
setTimeout(function () {
t.text('复制code');
},1500);
});
$('#down-textarea').text(getTextLinks());
}
/** 旧版接口，只能解析v1,v2 */
function v2(vid, name, $this) {
$.getJSON("/course/ajaxmediainfo/?mid=" + vid + "&mode=flash", function (response) {
var url = response.data.result.mpath[0];
parseVideo(vid, name, url, $this);
});
}
/** 新版接口，解析v1,v2,v3 */
function v3(vid, name, item) {
GM_xmlhttpRequest({
method: "GET",
url: "http://m.imooc.com/video/" + vid,
onload: function (response) {
var url = response.responseText.match(/(http.+mp4)/)[0];
parseVideo(vid, name, url, item);
}
});
}
/** 处理数据 */
function parseVideo(vid, name, url, item) {
var video = {
vid: vid,
name: name,
url: url
};
videoes.push(video);
var i = videoes.length - 1;
//添加单个下载链接
var $link = $('<span data-index="' + i + '" style="position:absolute;right:100px;top:0;cursor:pointer;">下载</span>');
$link.on('click', function () {
var c = ['H', 'M', 'L'];
window.open(url.replace(/\w\.mp4/, c[config[0][2]]) + '.mp4');
});
item.after($link);
//显示下载总数
if (videoes.length == total) {
loading = false;
$('#downOn').text('视频下载(' + total + ')');
}
}
/** 更新textarea */
function getTextLinks() {
var c = ['H', 'M', 'L'];
var retType = outTextType[config[1][2]];
if (retType === "json") return JSON.stringify(videoes);
else {
var str = "";
for (var i in videoes) {
var url = videoes[i].url.replace(/\w\.mp4/, c[config[0][2]]) + '.mp4';
if (retType === "xml") {
str += '\t<video>\n\t\t<url>' + url + '</url>\n\t\t<name>' + videoes[i].name + '</name>\n\t</video>\n';
} else if (retType === "raw") {
str += url + "\n";
} else {//idm
str += "filename=" + videoes[i].name + "&fileurl=" + url + "\n";
}
}
if (retType === "xml") str = "<?xml version='1.0' encoding='utf-8' ?>\n<videoes>\n" + str + '</videoes>';
return str;
}
}
})();
