// ==UserScript==
// @name         bilibili视频下载
// @namespace    https://github.com/injahow
// @version      0.1.3
// @description  仅支持flv视频，建议使用IDM下载，api接口见https://github.com/injahow/bilibili-parse
// @author       injahow
// @match        *://www.bilibili.com/video/*
// @license      MIT
// @grant        none
// @require      https://static.hdslb.com/js/jquery.min.js
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    let aid = '', p = '', q='';
    let aid_temp = '', p_temp = '', q_temp = '';

    const topBox =
        "<div style='position:fixed;z-index:999999;cursor:pointer;top:60px;left:0px;'>"+
        "<div id='bilibili_parse' style='font-size:14px;padding:10px 2px;color:#000000;background-color:#00a1d6;'>请求地址</div>"+
        "<div style='font-size:14px;padding:10px 2px;'>"+
        "<a id='video_url' style='display:none' target='_blank' referrerpolicy='origin' href='#'>下载视频</a>"+
        "</div>"+
        "</div>";
    $('body').append(topBox)
    const video_url = $('#video_url')

    $('body').on('click','#bilibili_parse',function(){

        //获取视频编号参数aid
        const link_av = $('link[rel="canonical"]')[0].href
        const patt = /bilibili.com\/video\/av\d+/g
        if(patt.test(link_av)){
            aid = link_av.replace(/[^0-9]/ig, '')
            console.log('获取aid:',aid)
        } else {
            console.log('aid获取出错！')
            return
        }

        // 获取视频分辨率参数q
        q = $('li.bui-select-item.bui-select-item-active').attr('data-value')
        q = q || '64'

        //获取视频分页参数p
        let query_arr = window.location.search.substring(1).split('&');
        for (let i=0; i<query_arr.length; i++) {
            let pair = query_arr[i].split('=')
            if(pair[0] == 'p'){
                p = pair[1]
            }
        }
        p = p || '1'

        if (aid === aid_temp && p === p_temp && q === q_temp){
            console.log('重复请求')
            video_url.show()
            return
        }
        aid_temp = aid
        p_temp = p
        q_temp = q

        console.log('开始解析')
        $.ajax({
            url:`https://api.injahow.cn/bparse/?av=${aid}&p=${p}&q=${q}&otype=url`,
            dataType:'text',
            success:function(result){
                console.log('url获取成功')
                video_url.attr('href', result.replace(/^https?\:\/\//i,'https://'))
                video_url.show()
            }
        })
    })

    // 监听p
    $('body').on('click','.list-box',function(){
        video_url.hide()
    })

    // 监听q
    $('body').on('click','li.bui-select-item',function(){
        video_url.hide()
    })

    // 监听aid 右侧推荐
    $('body').on('click','.rec-list',function(){
        video_url.hide()
    })

    // 监听aid 视频内部推荐
    $('body').on('click','.bilibili-player-ending-panel-box-videos',function(){
        video_url.hide()
    })

})();