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V2EX Auto Dark Mode

Turn on/off dark mode automatically in v2ex.com based on the color scheme of OS.

当前为 2021-04-01 提交的版本，查看 最新版本。

// ==UserScript==
// @name         V2EX Auto Dark Mode
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Turn on/off dark mode automatically in v2ex.com based on the color scheme of OS.
// @author       Jiachen Chen
// @match        *://*.v2ex.com/*
// @match        *://v2ex.com/*
// @icon         https://www.google.com/s2/favicons?domain=v2ex.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const toggleLink = document.querySelector('.light-toggle').getAttribute('href');

    if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
        if (SITE_NIGHT) {
            window.location.replace(toggleLink);
        }
    }

    window.matchMedia('(prefers-color-scheme: light)').addEventListener('change', e => {
        if (SITE_NIGHT) {
            window.location.replace(toggleLink);
        }
    });

    if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
        if (SITE_NIGHT === 0) {
            window.location.replace(toggleLink);
        }
    }

    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => {
        if (SITE_NIGHT === 0) {
            window.location.replace(toggleLink);
        }
    });
})();