Fuck_Powerlink.user.js

// ==UserScript==
// @name        Fuck Powerlink
// @namespace   Violentmonkey Scripts
// @match       https://namu.wiki/w/*
// @version     1.5
// @updateURL   https://gist.github.com/Soochaehwa/5179594a768d91dae9270dc130c4bff6/raw/Fuck_Powerlink.user.js
// @downloadURL https://gist.github.com/Soochaehwa/5179594a768d91dae9270dc130c4bff6/raw/Fuck_Powerlink.user.js
// @grant       unsafeWindow
// @run-at      document-start
// ==/UserScript==

(function () {
    'use strict';

    const getTargetColor = () => {
        const getSeedTheme = () => {
            try {
                const settings = JSON.parse(localStorage.getItem('theseed_settings') || '{}');
                return settings['wiki.theme'] || null;
            } catch {
                return null;
            }
        };

        const seedTheme = getSeedTheme();
        if (seedTheme === 'dark') return 'rgb(43, 43, 43)';
        if (seedTheme === 'light') return 'rgb(255, 254, 249)';

        return window.matchMedia('(prefers-color-scheme: dark)').matches
            ? 'rgb(43, 43, 43)'
            : 'rgb(255, 254, 249)';
    };

    let lastThemeState = null;
    const getCachedTargetColor = () => {
        const currentColor = getTargetColor();
        if (currentColor !== lastThemeState) {
            lastThemeState = currentColor;
        }
        return currentColor;
    };

    const removeBackgroundElements = () => {
        console.log('removeBackgroundElements');
        const targetColor = getCachedTargetColor();
        const elements = document.getElementsByTagName('*');

        for (let i = elements.length - 1; i >= 0; i--) {
            const element = elements[i];
            const bgColor = window.getComputedStyle(element).backgroundColor;

            if (bgColor === targetColor) {
                const parent = element.parentElement;
                if (parent && parent.children.length === 6) {
                    const grandParent = parent.parentElement;
                    grandParent && grandParent.remove();
                } else {
                    element.remove();
                }
                break;

            }
        }
    };

    const initObserver = () => {
        const observer = new MutationObserver(removeBackgroundElements);
        observer.observe(document.body, {
            childList: true,
            subtree: true,
        });

    };

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', () => {
            initObserver();
        });
    } else {
        initObserver();
    }
})();