// ==UserScript==
// @name         ПУК-СРЕНЬК
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       Anonymous
// @match        https://2ch.hk/*/res/*.html
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

const decode = (str) => {
    return new TextDecoder().decode(
        new Uint8Array(
            str
            .replace(/(\d+[ПУК|СРЕНЬК]{3,6})/g, (m) => {
                const count = parseInt(m.replace(/[ПУК|СРЕНЬК]/g, ""), 10);
                return m.replace(count, "").repeat(count);
            })
            .replace(/ПУК/g, "0")
            .replace(/СРЕНЬК/g, "1")
            .replace(/-/g, "")
            .match(/.{1,8}/g)
            .map((c) => parseInt(c, 2))
        )
    );
};

(function() {
    const posts = document.querySelectorAll('.post__message');

    posts.forEach((post) => {
        const words = post.textContent.replace(/\t+/g,"").split(/[\n, ]+/);

        words.forEach((word) => {
            post.innerHTML = post.innerHTML.replace(/(\d+)?(СРЕНЬК|ПУК).+/, (m) => {
                return `<div style="color:green">${decode(m)}</div>`;
            });
        });
    });
})();