// ==UserScript==
// @name         bv2av
// @namespace    http://tampermonkey.net/
// @version      1.19
// @description  Change bv to av
// @author       ouuan
// @license      MIT
// @match        *://*.bilibili.com/*
// @grant        none
// ==/UserScript==
(function () {
// https://socialsisteryi.github.io/bilibili-API-collect/docs/misc/bvid_desc.html#bv-av%E7%AE%97%E6%B3%95
const XOR_CODE = 23442827791579n;
const MASK_CODE = 2251799813685247n;
const BASE = 58n;
const data = 'FcwAPNKTMug3GV5Lj7EJnHpWsx4tb8haYeviqBz6rkCy12mUSDQX9RdoZf';
function dec(bvid) {
const bvidArr = Array.from(bvid);
[bvidArr[3], bvidArr[9]] = [bvidArr[9], bvidArr[3]];
[bvidArr[4], bvidArr[7]] = [bvidArr[7], bvidArr[4]];
bvidArr.splice(0, 3);
const tmp = bvidArr.reduce(
(pre, bvidChar) => pre * BASE + BigInt(data.indexOf(bvidChar)),
0n,
);
// eslint-disable-next-line no-bitwise
return `av${Number((tmp & MASK_CODE) ^ XOR_CODE)}`;
}
function bv2av(x) {
if (!x.match('www.bilibili.com')) return x;
if (x.includes('/watchlater')) return x;
const bvs = x.match(
/[bB][vV][fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF]{10}/g,
);
if (bvs) {
for (const bv of bvs) {
x = x.replace(bv, () => dec(bv));
}
}
if (x.match(/bilibili.com\/av\d+/)) {
x = x.replace(/(av\d+)/, 'video/$1');
}
return x;
}
setInterval(() => {
const url = window.location.href;
const newUrl = bv2av(url);
if (url !== newUrl) {
window.history.replaceState(null, null, newUrl);
}
}, 1000);
setInterval(() => {
const as = document.querySelectorAll('a');
for (const o of as) {
if (o.href) o.href = bv2av(o.href);
}
const divs = document.querySelectorAll('div');
for (const o of divs) {
if (o.title) o.title = bv2av(o.title);
}
}, 500);
if ('navigation' in window) {
window.navigation.addEventListener('navigate', (e) => {
const { url } = e.destination;
const newUrl = bv2av(url);
if (url !== newUrl) {
window.history.replaceState(null, null, newUrl);
}
});
}
}());