// ==UserScript==
// @name        bilibili plus bilibilijj
// @namespace   http://qli5.tk/
// @description 在bilibili界面上直接添加jj的三种下载链接。flv是分段超清，mp4是整段高清，ass下载已引用大神代码修复。请登录jj以跳过广告页。播放弹幕可使用potplayer等。视频弹幕同名即可自动加载。
// @include     http://www.bilibili.com/video/av*
// @include     https://www.bilibili.com/video/av*
// @include     http://bangumi.bilibili.com/anime/*
// @include     https://bangumi.bilibili.com/anime/*
// @version     0.4
// @grant       GM_xmlhttpRequest
// @grant       GM_getValue
// @grant       GM_setValue
// @author      qli5
// @copyright   qli5, 2014+, 田生
// @license     Mozilla Public License 2.0; http://www.mozilla.org/MPL/2.0/
// @require     https://greasyfork.org/scripts/2231-bilibili-ass-danmaku-downloader/code/bilibili%20ASS%20Danmaku%20Downloader.user.js
// @connect-src www.jijidown.com
// @connect-src comment.bilibili.com
// @connect-src www.flvcd.com
// @downloadURL none
// ==/UserScript==

// 感谢所有大佬，鄙人只做了微小的工作。
(function () {
    // jj的站长说被攻击了，所以加了很严格的机器人检查。可以尝试加快检查，但是如果您真的是机器人也没办法。
    var testingBypassSafedog = GM_getValue && GM_getValue('testingBypassSafedog') || undefined;
    // 本测试功能适合一次会下载很多视频的场景，可以尽量方便地把mp4的文件名改成ass的。这是我能在同源限制下想出的最好办法。请诸大佬指教。
    var testingMP4Rename = GM_getValue && GM_getValue('testingMP4Rename') || undefined;
    // 本测试功能适合看完就删的场景，可以将ass的文件名改成mp4的。文件名一般是数字乱码，也有可能失败，但不需要多点击。
    var testingASSRename = GM_getValue && GM_getValue('testingASSRename') || undefined;
    // 本测试功能将在jj无数据时尝试另一个老牌通用解析网站flvcd.com。暂时没做番剧解析。
    var testingFLVCD = GM_getValue && GM_getValue('testingFLVCD') || undefined;
    // 强迫症就请自己动手把undefined改成true/false吧

    // settings
    if (GM_setValue && (typeof (testingBypassSafedog) != 'boolean' || typeof (testingMP4Rename) != 'boolean' || typeof (testingASSRename) != 'boolean' || typeof (testingFLVCD) != 'boolean')) {
        testingBypassSafedog = confirm('欢迎使用bilibili plus bilibilijj。jj的站长说被攻击了，所以加了很严格的机器人检查。可以尝试加快检查，但是如果您真的是机器人也没办法。要这样做吗？');
        testingMP4Rename = confirm('本测试功能适合一次会下载很多视频的场景，可以尽量方便地把mp4的文件名改成ass的。这是我能在同源限制下想出的最好办法。请诸大佬指教。要这样做吗？');
        testingASSRename = confirm('本测试功能适合看完就删的场景，可以将ass的文件名改成mp4的。文件名一般是数字乱码，也有可能失败，但不需要多点击。要这样做吗？');
        testingFLVCD = confirm('本测试功能将在jj无数据时尝试另一个老牌通用解析网站flvcd.com。暂时没做番剧解析。要这样做吗？');
        alert('到油猴界面重置脚本可以清除这些设置，强迫症可以继续改源码。多谢使用。');
        GM_setValue('testingBypassSafedog', testingBypassSafedog);
        GM_setValue('testingMP4Rename', testingMP4Rename);
        GM_setValue('testingASSRename', testingASSRename);
        GM_setValue('testingFLVCD', testingFLVCD);
    }

    // reset dalao's script
    window.removeEventListener('DOMContentLoaded', init);
    init = function () { };
    initFont();

    var paraOriginal;
    GM_xmlhttpRequest(paraOriginal = {
        method: 'GET',
        url: 'http://www.jijidown' + location.href.match(/\.com.*/)[0],
        onload: function (response) {
            var doc = new DOMParser().parseFromString(response.responseText, 'text/html');
            var links = document.createElement('div');

            // anchor to jj
            var aa;
            aa = document.createElement('a');
            aa.href = 'http://www.jijidown' + location.href.match(/\.com.*/)[0];
            aa.textContent = 'bilibilijj';
            links.appendChild(aa);

            // testingMP4Rename
            var input, button;
            if (testingMP4Rename) {
                input = document.createElement('input');
                input.type = 'text';
                input.value = '请选择ass...';
                input.onclick = function () { this.select(); };
                links.appendChild(input);
                button = document.createElement('button');
                button.onclick = function () {
                    try {
                        input.select();
                        document.execCommand('copy');
                    }
                    catch (e) {
                        console.warn('Oops, copy failed' + e);
                    }
                };
                button.textContent = 'copy';
                links.appendChild(button);
            }

            if (doc.getElementsByClassName('yjs-browser-verification').length > 0) {
                // jj boom
                links.appendChild(document.createTextNode('jj觉得你是机器人，请手动访问一次。'));

                // testingBypassSafedog
                if (testingBypassSafedog) {
                    links.appendChild(document.createTextNode('但是你选择了跳过jj的机器人验证，讨厌~~稍后刷新'));
                    var jschl_vc = response.responseText.match(/<input type="hidden" name="jschl_vc" value=".*(?="\/>)/)[0].slice(44);
                    var pass = response.responseText.match(/<input type="hidden" name="pass" value=".*(?="\/>)/)[0].slice(40);
                    var jschl_answer = eval(
                        response.responseText
                        .match(/setTimeout\(function\(\){[\s\S]*?}[\s\S]*?(?=})/)[0].slice(23)
                        .replace("a = document.getElementById('jschl-answer');", 'a = {}')
                        .replace("f = document.getElementById('challenge-form');", '// f')
                        .replace("f.submit();", 'a;')
                    );

                    // safedog will reject false starts. you may tweak the delay if you have a higher RTT, especially if you are not in China
                    setTimeout(function () {
                        links.remove();
                        GM_xmlhttpRequest({
                            method: 'GET',
                            url: 'http://www.jijidown.com/cdn-cgi/l/chk_jschl?' + 'jschl_vc=' + encodeURIComponent(jschl_vc) + '&pass=' + encodeURIComponent(pass) + '&jschl_answer=' + encodeURIComponent(jschl_answer.value),
                            headers: {
                                'Referer': 'http://www.jijidown.com/'
                            },
                            onload: function () {
                                GM_xmlhttpRequest(paraOriginal);
                            }
                        });
                    }, 4000);

                    testingBypassSafedog = false; // to avoid infinite loop
                }
            }
            else {
                // testingFLVCD index_*.html
                var indexCount;
                if (testingFLVCD) indexCount = 1;

                // parse jj
                var listCols = doc.getElementById('Right_Main');
                if (listCols.children.length === 0) links.appendChild(document.createTextNode('本视频貌似太冷门了，需要到jj刷新一下。'));
                for (var i = 0; i < listCols.children.length; i++) {
                    var list = listCols.children[i];
                    for (var j = 0; j < list.children.length; j++) {
                        var flvDiv, mp4Div, assDiv;
                        var name, cid;
                        if (list.children[j].querySelector('span.PBoxName')) {
                            flvDiv = list.children[j].querySelector('span.Data_Main > span.Data_Flv > span.Data_Data');
                            mp4Div = list.children[j].querySelector('span.Data_Main > span.Data_Mp4 > span.Data_Data');
                            assDiv = list.children[j].querySelector('span.Data_Main > span.Data_Ass > span.Data_Data');
                            if (list.children[j].querySelector('span.PBoxName').textContent == '下载地址(右侧方块切换类型)')
                                name = assDiv.children[0].title.slice(0, -7);
                            else
                                name = list.children[j].querySelector('span.PBoxName').textContent;
                            cid = list.children[j].getAttribute('data-cid');

                            // name
                            links.appendChild(document.createElement('br'));
                            links.appendChild(document.createTextNode(name));
                            links.appendChild(document.createTextNode(' '));

                            // flv
                            var a;
                            a = document.createElement('a');
                            a.href = 'http://www.jijidown.com' + flvDiv.querySelector('a').getAttribute('href');
                            a.textContent = 'flv';
                            links.appendChild(a);
                            links.appendChild(document.createTextNode(' '));

                            // mp4
                            a = document.createElement('a');
                            if (testingASSRename)
                                a.onclick = function () { this.nextSibling.nextSibling.download = this.href.match(/\/\d*(?=(-1-hd)?\.mp4)/)[0].slice(1) + '-1-hd.ass'; };
                            if (mp4Div.querySelector('a'))
                                a.href = 'http://www.jijidown.com' + mp4Div.querySelector('a').getAttribute('href');
                            else if (testingFLVCD && location.host == 'www.bilibili.com') {
                                // testingFLVCD
                                (function (a) {
                                    GM_xmlhttpRequest({
                                        method: 'GET',
                                        // flvcd is not that smart on bilibili. manual convert required...
                                        url: 'http://www.flvcd.com/parse.php?format=high&kw=' + location.href.match(/http:\/\/www.bilibili.com\/video\/av\d*/) + '/index_' + indexCount + '.html',
                                        onload: function (response) {
                                            var doc = new DOMParser().parseFromString(response.responseText, 'text/html');
                                            a.href = doc.getElementsByClassName('link')[0].getAttribute('href');
                                            if (doc.getElementsByClassName('link').length > 1) console.warn('flvcd fail. bilibili changed its api?');
                                        }
                                    });
                                })(a);
                            }
                            else {
                                a.onclick = function () { alert('no mp4 data\nplease check jj'); };
                            }
                            a.textContent = 'mp4';
                            links.appendChild(a);
                            links.appendChild(document.createTextNode(' '));

                            // ass
                            a = document.createElement('a');
                            a.onclick = (function (name, cid, self) {
                                return function () {
                                    if (self.href.slice(0, 4) != 'blob') {
                                        fetchDanmaku(cid, function (danmaku) {
                                            var ass = generateASS(setPosition(danmaku), {
                                                'title': name,
                                                'ori': location.href,
                                            });
                                            // I would assume most users are using Windows
                                            var blob = new Blob(['\ufeff' + ass], { type: 'application/octet-stream' });
                                            self.setAttribute('href', window.URL.createObjectURL(blob));
                                            self.click();
                                        });
                                        return false;
                                    }
                                    if (testingMP4Rename) {
                                        input.value = name + '.mp4';
                                        input.select();
                                    }
                                };
                            })(name, cid, a);
                            a.download = name + '.ass';
                            a.href = 'http://www.bilibilijj.com' + assDiv.querySelector('a').getAttribute('href');
                            a.textContent = 'ass';
                            links.appendChild(a);

                            if (testingFLVCD) indexCount++;
                        }
                    }
                }
            }

            // set styles
            links.style.backgroundColor = 'white';
            links.style.padding = '10px';
            links.style.border = 'black';
            links.style.borderWidth = 'thin';
            links.style.borderStyle = 'dashed';

            // append to page
            if (location.hostname == 'www.bilibili.com') {
                links.style.zIndex = '500000';
                links.style.position = 'absolute';
                links.style.top = '0px';
                document.querySelector('.v_small').appendChild(links);
            }
            else if (location.hostname == 'bangumi.bilibili.com') {
                document.querySelector('.v1-bangumi-list-part-wrapper').appendChild(links);
            }
        }
    });
})();