// ==UserScript==
// @name         bilibili bv2av
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://*.bilibili.com/**
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const bvs = new URLSearchParams(location.search).get('bvs')?.split(',').filter(Boolean) || [];
    if (bvs.length) {
        const avs = [];
        const div = document.createElement('div');
        Object.assign(div.style, {
            zIndex: 9999,
            position: 'fixed',
            top: 0,
            right: 0,
            fontSize: '40px',
            backgroundColor: 'white',
            padding: '20px',
            left: 0,
            textAlign: 'center'
        })
        document.body.append(div);
        const update = (str) => {
            div.innerText = str;
        };
        let i = 0;
        update(`bv2av -> ${i}/${bvs.length}`)
        bvs.reduce(async (p, bv) => {
            await p;
            const res = await fetch('/video/' + bv).then(res => res.text());
            const [, aid] = res.match(/"aid":(\d+)/) || []
            if (aid) { avs.push(`${bv}\t${aid}`) }
            await new Promise(r => setTimeout(r, 200));
            i ++;
            update(`bv2av -> ${i}/${bvs.length}`)
        }, 1).then(() => {
            update(avs.join('\n'))
        })
    }
})();