ResetEra Auto Dark Mode

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ResetEra Auto Dark Mode

Automatically toggle built-in dark mode on resetera.com
当前为 2020-10-23 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         ResetEra Auto Dark Mode
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Automatically toggle built-in dark mode on resetera.com
// @author       Nathaniel Wu
// @match        *.resetera.com/*
// @license      Apache-2.0
// @supportURL   https://gist.github.com/Nathaniel-Wu/13f3c865e190c2b182e41b9978c49782
// @grant        none
// ==/UserScript==

(function () {
    'use strict';
    const setDarkMode = on => {
        let switches = document.querySelectorAll('div[data-content="navigation"] a[data-xf-click="thstyleswitch"]');
        let dark_switch = null, light_switch = null, is_light;
        switches.forEach(e => {
            let innerText = e.innerText.toLowerCase();
            if (Boolean(innerText.match(/light/)))
                light_switch = e;
            else if (Boolean(innerText.match(/dark/)))
                dark_switch = e;
        });
        if (!(Boolean(dark_switch) && Boolean(light_switch))) {
            console.log('site updated, current script no longer works');
            return;
        }
        let light_switch_parent = light_switch.closest('li.re_styleSwitch');
        if (!((is_light = light_switch_parent.classList.contains('re_styleSwitch--hide')) || light_switch_parent.classList.contains('re_styleSwitch--show')))
            is_light = Boolean(light_switch_parent.getAttribute('style').match(/display:\s*none/));
        if (on && is_light)
            dark_switch.click();
        else if (!on && !is_light)
            light_switch.click();
    }
    if (window.matchMedia) {// if the browser/os supports system-level color scheme
        setDarkMode(window.matchMedia('(prefers-color-scheme: dark)').matches);
        window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => setDarkMode(e.matches));
    } else {// otherwise use local time to decide
        let hour = (new Date()).getHours();
        setDarkMode(hour > 18 || hour < 8);
    }
})();