<?php
/**
 * Plugin Name: AboveWP Admin Dark Mode
 * Description: A sleek dark mode toggle for the WordPress admin area.
 * Version: 1.2.0
 * Author: AboveWP
 * Author URI: https://abovewp.com
 * Text Domain: abovewp-admin-dark-mode
 * Domain Path: /languages
 * License: GPLv2 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 */

// Exit if accessed directly
if (!defined('ABSPATH')) {
    exit;
}

// Define plugin constants
define('ABOVEWP_ADM_VERSION', '1.2.0');
define('ABOVEWP_ADM_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('ABOVEWP_ADM_PLUGIN_URL', plugin_dir_url(__FILE__));
define('ABOVEWP_ADM_PLUGIN_BASENAME', plugin_basename(__FILE__));

// Include required files
require_once ABOVEWP_ADM_PLUGIN_DIR . 'includes/class-abovewp-admin-menu.php';
require_once ABOVEWP_ADM_PLUGIN_DIR . 'includes/admin-settings.php';

/**
 * Main plugin class
 */
class AboveWP_Admin_Dark_Mode {
    /**
     * Instance of this class
     */
    private static $instance = null;

    /**
     * Return an instance of this class
     */
    public static function get_instance() {
        if (null == self::$instance) {
            self::$instance = new self;
        }
        return self::$instance;
    }

    /**
     * Constructor
     */
    private function __construct() {
        // Add dark mode class to body very early
        add_action('init', array($this, 'add_dark_mode_class'));
        
        // Add HTML class immediately to prevent FOUC
        add_action('wp_head', array($this, 'add_html_dark_mode_class'), 1);
        add_action('admin_head', array($this, 'add_html_dark_mode_class'), 1);
        
        // Enqueue CSS early to prevent FOUC
        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_assets'), 5);
        
        // Remove WordPress admin notices on our admin pages
        add_action('admin_head', array($this, 'remove_admin_notices_on_plugin_pages'));
        
        // Add toggle button to admin bar
        add_action('admin_bar_menu', array($this, 'add_dark_mode_toggle'), 999);
        
        // Register user meta for storing dark mode preference
        register_meta('user', 'abovewp_dark_mode_enabled', array(
            'type' => 'boolean',
            'description' => __('Whether dark mode is enabled for the user', 'abovewp-admin-dark-mode'),
            'single' => true,
            'show_in_rest' => true,
        ));
        
        // Add plugin card to AboveWP dashboard
        add_action('abovewp_admin_dashboard_plugins', array($this, 'display_plugin_card'));
    }

    /**
     * Enqueue admin scripts and styles
     */
    public function enqueue_admin_assets() {
        // Enqueue CSS
        wp_enqueue_style(
            'abovewp-admin-dark-mode',
            ABOVEWP_ADM_PLUGIN_URL . 'assets/css/dark-mode.css',
            array(),
            ABOVEWP_ADM_VERSION
        );

        // Enqueue admin page styles on dark mode settings page
        $screen = get_current_screen();
        if (isset($screen->id) && strpos($screen->id, 'abovewp-dark-mode') !== false) {
            wp_enqueue_style(
                'abovewp-font-inter',
                'https://fonts.bunny.net/css?family=inter:400,500,600,700',
                array(),
                null
            );
            wp_enqueue_style(
                'abovewp-admin-page-default',
                ABOVEWP_ADM_PLUGIN_URL . 'assets/css/admin-page-default.css',
                array('abovewp-font-inter'),
                ABOVEWP_ADM_VERSION
            );
        }

        // Enqueue JS
        wp_enqueue_script(
            'abovewp-admin-dark-mode',
            ABOVEWP_ADM_PLUGIN_URL . 'assets/js/dark-mode.js',
            array('jquery'),
            ABOVEWP_ADM_VERSION,
            true
        );

        // Pass data to JS
        wp_localize_script(
            'abovewp-admin-dark-mode',
            'abovewpDarkMode',
            array(
                'ajaxUrl' => admin_url('admin-ajax.php'),
                'nonce' => wp_create_nonce('abovewp_dark_mode_nonce'),
                'isDarkMode' => get_user_meta(get_current_user_id(), 'abovewp_dark_mode_enabled', true) === '1',
                'darkModeText' => __('Dark Mode', 'abovewp-admin-dark-mode'),
                'lightModeText' => __('Light Mode', 'abovewp-admin-dark-mode'),
            )
        );

        // Pass settings data to JS
        $settings = get_option('abovewp_dark_mode_options', array());
        wp_localize_script(
            'abovewp-admin-dark-mode',
            'abovewpDarkModeSettings',
            $settings
        );
    }

    /**
     * Add dark mode toggle to admin bar
     */
    public function add_dark_mode_toggle($wp_admin_bar) {
        $wp_admin_bar->add_node(array(
            'id' => 'abovewp-dark-mode-toggle',
            'title' => '<span class="ab-icon"></span><span class="ab-label">' . __('Dark Mode', 'abovewp-admin-dark-mode') . '</span>',
            'href' => '#',
            'meta' => array(
                'class' => 'abovewp-dark-mode-toggle',
                'title' => __('Toggle Dark Mode', 'abovewp-admin-dark-mode'),
            ),
        ));
    }

    /**
     * Add dark mode class to HTML element to prevent FOUC
     */
    public function add_html_dark_mode_class() {
        if (!is_admin()) return;
        
        if (get_user_meta(get_current_user_id(), 'abovewp_dark_mode_enabled', true) === '1') {
            $settings = get_option('abovewp_dark_mode_options', array());
            $theme = isset($settings['theme']) ? $settings['theme'] : 'classic-dark';
            ?>
            <script>
                document.documentElement.classList.add('abovewp-dark-mode-ready');
                document.body.classList.add('abovewp-dark-mode', 'abovewp-<?php echo esc_js($theme); ?>');
            </script>
            <?php
        } else {
            ?>
            <script>
                document.documentElement.classList.add('abovewp-dark-mode-ready');
            </script>
            <?php
        }
    }

    /**
     * Add dark mode class to body early
     */
    public function add_dark_mode_class() {
        if (get_user_meta(get_current_user_id(), 'abovewp_dark_mode_enabled', true) === '1') {
            add_filter('admin_body_class', function($classes) {
                $settings = get_option('abovewp_dark_mode_options', array());
                $theme = isset($settings['theme']) ? $settings['theme'] : 'classic-dark';
                return $classes . ' abovewp-dark-mode abovewp-' . $theme;
            });
        }
    }

    /**
     * Remove WordPress admin notices on plugin pages
     */
    public function remove_admin_notices_on_plugin_pages() {
        $screen = get_current_screen();
        
        // Only remove notices on our plugin pages
        if (isset($screen->id) && (
            strpos($screen->id, 'abovewp-admin-dark-mode') !== false || 
            strpos($screen->id, 'toplevel_page_abovewp') !== false
        )) {
            // Remove all admin notices
            remove_all_actions('admin_notices');
            remove_all_actions('all_admin_notices');
            
            // Add our custom CSS to hide any notices that might get through
            echo '<style>
                .notice, .updated, .update-nag, .error, .warning, .info { 
                    display: none !important; 
                }
            </style>';
        }
    }
    
    /**
     * Display plugin card on AboveWP dashboard
     */
    public function display_plugin_card() {
        ?>
        <div class="aw-admin-dashboard-plugin">
            <h3><?php esc_html_e('Admin Dark Mode', 'abovewp-admin-dark-mode'); ?></h3>
            <p><?php esc_html_e('A sleek dark mode toggle for the WordPress admin area.', 'abovewp-admin-dark-mode'); ?></p>
            <div class="aw-admin-dashboard-plugin-actions">
                <a href="<?php echo esc_url(admin_url('admin.php?page=abovewp-dark-mode')); ?>" class="button button-primary">
                    <?php esc_html_e('Configure', 'abovewp-admin-dark-mode'); ?>
                </a>
            </div>
        </div>
        <?php
    }
}

// Initialize the plugin
function abovewp_admin_dark_mode_init() {
    // Initialize parent menu
    AboveWP_Admin_Menu::init();
    
    // Initialize plugin
    AboveWP_Admin_Dark_Mode::get_instance();
}
add_action('plugins_loaded', 'abovewp_admin_dark_mode_init');

// AJAX handler to save user preference
function abovewp_save_dark_mode_preference() {
    // Check nonce
    if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'abovewp_dark_mode_nonce')) {
        wp_send_json_error(__('Invalid nonce', 'abovewp-admin-dark-mode'));
    }

    // Get and sanitize the dark mode status
    $is_dark_mode = isset($_POST['is_dark_mode']) ? sanitize_text_field(wp_unslash($_POST['is_dark_mode'])) : '0';
    
    // Save user preference
    update_user_meta(get_current_user_id(), 'abovewp_dark_mode_enabled', $is_dark_mode);
    
    wp_send_json_success();
}
add_action('wp_ajax_abovewp_save_dark_mode_preference', 'abovewp_save_dark_mode_preference');

// AJAX handler to save dark mode settings
function abovewp_save_dark_mode_settings() {
    // Check nonce
    if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'abovewp_dark_mode_nonce')) {
        wp_send_json_error(__('Invalid nonce', 'abovewp-admin-dark-mode'));
    }

    // Check permissions
    if (!current_user_can('manage_options')) {
        wp_send_json_error(__('Insufficient permissions', 'abovewp-admin-dark-mode'));
    }

    // Get and sanitize settings
    $settings = array();
    if (isset($_POST['settings'])) {
        // Properly sanitize the input array first
        $settings = map_deep(wp_unslash($_POST['settings']), 'sanitize_text_field');
    }

    // Use the existing sanitization function for additional validation
    $sanitized_settings = abovewp_dark_mode_sanitize_options($settings);
    
    // Save settings
    update_option('abovewp_dark_mode_options', $sanitized_settings);
    
    wp_send_json_success(array(
        'message' => __('Settings saved successfully!', 'abovewp-admin-dark-mode')
    ));
}
add_action('wp_ajax_abovewp_save_dark_mode_settings', 'abovewp_save_dark_mode_settings');