MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

/**
 * Night Mode Toggle for Minerva Neue
 * Theme is applied early via LocalSettings.php hook to prevent FOUC
 * This script just adds the toggle button
 */
(function () {
    'use strict';

    var STORAGE_KEY = 'minerva-night-mode';

    // SVG icons (20x20)
    var MOON_SVG = '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path></svg>';
    var SUN_SVG = '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"></circle><line x1="12" y1="1" x2="12" y2="3"></line><line x1="12" y1="21" x2="12" y2="23"></line><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line><line x1="1" y1="12" x2="3" y2="12"></line><line x1="21" y1="12" x2="23" y2="12"></line><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line></svg>';

    function getSavedTheme() {
        try {
            return localStorage.getItem(STORAGE_KEY) || 'day';
        } catch (e) {
            return 'day';
        }
    }

    function saveTheme(theme) {
        try {
            localStorage.setItem(STORAGE_KEY, theme);
        } catch (e) {}
    }

    function applyTheme(theme) {
        var html = document.documentElement;
        html.classList.remove('skin-theme-clientpref-day', 'skin-theme-clientpref-night');
        html.classList.add('skin-theme-clientpref-' + theme);
    }

    function updateButtonState(button, theme) {
        var icon = button.querySelector('.minerva-icon');
        
        if (theme === 'night') {
            icon.innerHTML = SUN_SVG;
            button.setAttribute('title', 'Switch to light mode');
        } else {
            icon.innerHTML = MOON_SVG;
            button.setAttribute('title', 'Switch to dark mode');
        }
    }

    function createToggleButton() {
    var currentTheme = getSavedTheme();

    var li = document.createElement('li');
    
    var button = document.createElement('a');
    button.setAttribute('role', 'button');
    button.setAttribute('href', '#');
    button.id = 'ca-nightmode';
    button.className = 'cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet';
    button.style.cursor = 'pointer';

    var icon = document.createElement('span');
    icon.className = 'minerva-icon';
    icon.style.cssText = 'display:flex;align-items:center;justify-content:center;width:20px;height:20px;color:inherit;';

    var label = document.createElement('span');
    label.className = 'sr-only';
    label.style.cssText = 'position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;';
    label.textContent = currentTheme === 'night' ? 'Light mode' : 'Dark mode';
    
    button.appendChild(icon);
    button.appendChild(label);
    li.appendChild(button);

    updateButtonState(button, currentTheme);

    button.addEventListener('click', function (e) {
        e.preventDefault();
        var newTheme = getSavedTheme() === 'night' ? 'day' : 'night';
        saveTheme(newTheme);
        applyTheme(newTheme);
        updateButtonState(button, newTheme);
    });

    return li;
}

    function insertButton() {
        var notificationsList = document.querySelector('.minerva-notifications ul');
        
        if (notificationsList) {
            notificationsList.appendChild(createToggleButton());
        } else {
            var userNav = document.querySelector('.minerva-user-navigation');
            if (userNav) {
                var container = document.createElement('div');
                container.className = 'minerva-notifications';
                var ul = document.createElement('ul');
                ul.appendChild(createToggleButton());
                container.appendChild(ul);
                userNav.insertBefore(container, userNav.firstChild);
            }
        }
    }

    // Insert button when DOM is ready
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', insertButton);
    } else {
        insertButton();
    }
})();