Dark-light toggle for d3.ru, uses cookies
// ==UserScript==
// @name D3.ru Dark Theme Toggle
// @namespace https://d3.ru
// @version 2025.12.02
// @description Dark-light toggle for d3.ru, uses cookies
// @author Anton
// @match https://d3.ru/*
// @match https://*.d3.ru/*
// @grant none
// @run-at document-start
// @run-at document-idle
// @license MIT
// ==/UserScript==
(function injectSelf() {
console.log('D3 injection');
// 1. Compose the main script body as a string:
const code = '(' + function() {
console.log('D3 injection STARTED');
function getCookie(name) {
return document.cookie.split('; ').find(row => row.startsWith(name + '='))?.split('=')[1];
}
if (window.__D3_Dark_Theme_Active__) {
console.log('Already injected. Theme is active: '+ getCookie('d3ru-dark'));
return;
}
window.__D3_Dark_Theme_Active__ = true;
// --------- FASTER: Insert minimal style tag right away if dark is enabled ---------
if (getCookie('d3ru-dark') === '1') {
const quick = document.createElement('style');
quick.id = 'd3-dark-theme-style-instant';
quick.textContent = `
html, body { background: #111 !important; color: #fff !important; }
`;
document.documentElement.appendChild(quick); // as early as possible
}
// --------- All the rest runs after DOM is ready ---------
function start() {
if (!document.body) {
setTimeout(start, 50);
return;
}
console.log('D3 injection on DOMContentLoaded');
let DARK_CSS = `
.react, .react .b-karma_vote-count_0 .b-karma__value { color: #FFF !important; }
.react .b-user-popup__location, .react .b-user-popup__note-text, .react .b-sidebar-social__title { color: #EEE !important; }
.react .b-link_color_blue, .react .p-post-item__menu-section.b-radio_checked_true .b-radio__label { color: rgb(100 120 205) !important; }
.react .b-link_color_black, .react .b-radio_mode_tab, .react .b-rating_vote-sign_zero .b-rating__value, .react .b-user-login_color_black { color: #EEE !important; }
html, body, .react .w-app { background: #111 !important; }
.react .b-user-popup, .react .b-domain-popup { background: #444 !important; }
.react .b-post-cut, .react .p-post-item__layout { background: #333 !important; }
.react .b-sidebar-footer__fixed-container { background: #333 !important; border: 1px solid #444 !important; }
.react .b-context-menu__container { background: #222 !important; }
.react .b-button_mode_default.b-button_color_white { color: #EEE !important; background: #222 !important; border: 1px solid #444 !important; }
.react .s-footer { background: #222 !important; border-top: 1px solid #444 !important; }
.react .b-comment_unread_true.b-comment_mode_default.b-comment_folded_false>.b-comment__body { background: #444 !important; }
.react .b-base-sidebar__post-list, .react .p-post-item__post-list, .react .p-post-item__sidebar, .react .b-wysiwyg__editor, .react .b-tag { background: #333 !important; }
.react .b-domain-info { background: #333 !important; border-color: #444 !important; border-width: 1px !important; }
.react .b-action_color_textgrey { color: rgba(125,125,125,1) !important; }
.react .p-post-item__menu-section .b-radio__label { color: rgba(125,125,125,1) !important; }
.react .b-post-footer { color: rgba(125,125,125,1) !important; }
.react .b-comment__footer { color: rgba(125,125,125,1) !important; }
.react .b-button.b-button_mode_icon.b-button_color_textgrey { color: rgba(125,125,125,1) !important; }
.react .b-sidebar-post__rating { color: rgba(125,125,125,1) !important; text-shadow: 1px 1px 0 #333; }
.react .s-domain-toolbar { background: #222 !important; }
.react .b-icon { fill: currentColor; }
.react .p-post-item__layout, .react .p-post-item__post-list, .react .b-post-cut, .react .b-base-sidebar__post-list { border: 1px solid #444 !important; }
.react .b-sidebar-post { border-bottom: 1px solid #444 !important; }
.react .p-post-item__line { background: #444 !important; }
.react .b-button_mode_default.b-button_color_snowgrey { background: #333 !important; color: #CCC !important; }
.react .b-notification-popup__toolbar, .react .b-notification { background: #333 !important; border-bottom: 1px solid #444 !important; }
.react .b-notification_unread_true { background: #555 !important; }
.react .b-notification-popup { background: #333 !important; border: 1px solid #444 !important; }
.react .b-button.b-button_mode_default.b-button_color_white-textgrey { background: #333 !important; border: 1px solid #444 !important; }
.react .b-wysiwyg__toolbar { background: #444 !important; }
.react .b-wysiwyg__button_action_b.active, .react .b-wysiwyg__button_action_i.active, .react .b-wysiwyg__button_action_irony.active, .react .b-wysiwyg__button_action_link.active, .react .b-wysiwyg__button_action_u.active { background: #333 !important; }
.react .b-tag { border: 1px solid #444 !important; }
html.react .s-footer__app-button { border: 1px solid #444 !important; }
.react .b-search { border: 1px solid #444 !important; }
.react .b-select__menu { background: #444 !important; }
.react .b-checkbox_mode_toggle .b-checkbox__box { background: #666 !important; border-color: #444 !important; }
.react .s-menu__popup, .react .s-menu__domain-list { background: #444 !important; }
.react .b-link_color_textgrey { color: #EEE !important; }
.b-user_cover-bg { background: #333 !important; }
.react .b-tag_mode_text .b-tag__link { padding: 0 1px !important; }
.react .b-post-cut__gallery-image { border: 2px solid #333 !important; }
.react .b-rating-popup { background: #444 !important; }
.react .b-rating-popup__value { color: #EEE !important; }
.b-form_submit { background: #333 !important; }
`;
// Special for "Inboxes"
DARK_CSS += `
.l-content, .l-header { background: #333 !important; color: #FFF !important; }
.l-header { box-shadow: inset 0 -2px 0 -1px #444; }
.l-base_domain .b-header_nav_button__active, .b-inbox_controls { background: #555 !important; }
.b-header_nav_button .b-button_caption { color: #FFF !important; }
.b-menu_link { background: transparent !important; color: #EEE !important; border-bottom: #555 !important; }
.b-menu_link_text { border-top: #555 !important; }
.post_inbox_page .post h3 { color: #FFF !important; }
.b-notification-item, a.b-notification-item_mention_link { color: #EEE !important; }
`
// Special for "New post"
DARK_CSS += `
.b-post_header, .b-post_header .l-header-base, .space_page .l-header-base, .l-adv_page .l-header-base { background: #333 !important; color: #EEE !important; }
.b-new_post, .b-new_post_footer, .b-new_post_domain { background: #333 !important; color: #EEE !important; }
.l-footer { background: #333 !important; border-top: 1px solid #444 !important; }
.i-form_textarea_white, .i-form_text_input_white { background: #444 !important; color: #EEE !important; }
.b-tags_link { background: #444 !important; color: #EEE !important; }
.i-form_textarea_pure { color: #EEE !important; border: 1px solid #444 !important; }
.b-textarea_editor { background: #444 !important; color: #EEE !important; }
.b-post_page_post .b-post_preview { background: #444 !important; color: #EEE !important; }
irony, .irony { color: #E44 !important; }
.b-post_tags .tag { color: #EEE !important; background-color: #444 !important; border-right: 1px solid #444 !important; border-bottom: 1px solid #444 !important; }
.tag { border: 1px solid #444 !important; }
.b-post_file_uploader a { color: #EEE !important; }
.b-post_page { background: #111 !important; }
`
// Special for subdomain edit
DARK_CSS += `
.react .p-domain-editor-main__container { background: #333 !important; color: #EEE !important; border: 1px solid #444 !important; }
.react .p-domain-editor-main__header { color: #FFF !important; }
.react .p-domain-editor-ban__container { background: #333 !important; color: #EEE !important; border: 1px solid #444 !important; }
.react .p-domain-editor-ban__header { color: #FFF !important; }
.react .b-search__toggle-button { color: #EEE !important; }
`
// Special for "Loading" screen
DARK_CSS += `
body #overlay { background: #111 !important; }
`
const btn = document.createElement('button');
btn.id = 'theme-toggle-btn';
btn.style = `
position: fixed; top: 16px; right: 16px; z-index: 10000;
background: #222; color: #fff; border: none; border-radius: 20px;
padding: 6px 13px; font-size: 21px; cursor: pointer;
box-shadow: 0 2px 10px #0004;
`;
let darkStyle = null;
function setCookie(name, value, days = 365) {
let d = new Date();
d.setTime(d.getTime() + days*24*60*60*1000);
document.cookie = `${name}=${value}; expires=${d.toUTCString()}; path=/; domain=.d3.ru; SameSite=Lax`;
}
function enableDark() {
if (!darkStyle) {
darkStyle = document.createElement('style');
darkStyle.id = 'd3-dark-theme-style';
darkStyle.textContent = DARK_CSS;
document.head.appendChild(darkStyle);
}
// Remove fast inital style if present
document.getElementById('d3-dark-theme-style-instant')?.remove();
btn.textContent = '🌙';
setCookie('d3ru-dark', '1');
}
function disableDark() {
if (darkStyle) darkStyle.remove();
darkStyle = null;
btn.textContent = '☀️';
setCookie('d3ru-dark', '');
document.getElementById('d3-dark-theme-style-instant')?.remove();
}
btn.onclick = function() {
if (darkStyle) disableDark();
else enableDark();
};
// Init
if (getCookie('d3ru-dark') === '1') enableDark();
else disableDark();
document.body.appendChild(btn);
function ensureTheme() {
console.log('checking theme...')
if (!document.getElementById('theme-toggle-btn')) {
document.body.appendChild(btn);
}
if (getCookie('d3ru-dark') === '1') {
if (!document.getElementById('d3-dark-theme-style')) enableDark();
} else {
if (document.getElementById('d3-dark-theme-style')) disableDark();
}
}
const mo = new MutationObserver(ensureTheme);
mo.observe(document.body, {childList:true, subtree:true});
//setInterval(ensureTheme, 500);
window.addEventListener('popstate', ensureTheme);
}
start();
}.toString() + ')();';
// 2. Actually inject it as a <script> node:
const el = document.createElement('script');
el.textContent = code;
document.documentElement.appendChild(el);
})();