<?php

declare(strict_types=1);

namespace AdsDestroyer\Admin;

use AdsDestroyer\Settings\OptionsRepository;

/**
 * Admin Bar Controller for AdsDestroyer plugin.
 * 
 * This class handles the admin bar integration, including
 * adding the toggle button and managing its state.
 * 
 * @since 1.0.0
 */
final class AdminBarController {
    
    private OptionsRepository $options_repository;
    
    public function __construct(OptionsRepository $options_repository) {
        $this->options_repository = $options_repository;
    }
    
    /**
     * Initialize admin bar functionality.
     */
    public function init(): void {
        add_action('admin_bar_menu', [$this, 'add_admin_bar_button'], 999);
        add_action('wp_enqueue_scripts', [$this, 'enqueue_admin_bar_assets']);
        add_action('admin_enqueue_scripts', [$this, 'enqueue_admin_bar_assets']);
    }
    
    /**
     * Add toggle button to admin bar.
     * 
     * @param \WP_Admin_Bar $wp_admin_bar
     */
    public function add_admin_bar_button(\WP_Admin_Bar $wp_admin_bar): void {
        if (!$this->can_user_access_selection_mode()) {
            return;
        }
        
        $is_active = $this->is_selection_mode_active();
        
        // Generate URL with or without selection mode parameter
        $current_url = $this->get_current_url();
        $href = $is_active ? $this->remove_selection_mode_param($current_url) : $this->add_selection_mode_param($current_url);
        
        $button_title = $is_active ? __('Exit selection mode', 'ads-destroyer') : __('Disable ad', 'ads-destroyer');
        
        $wp_admin_bar->add_node([
            'id' => 'adsd-toggle',
            'title' => esc_html($button_title),
            'href' => $href,
            'meta' => [
                'title' => $is_active ? esc_attr__('Exit selection mode', 'ads-destroyer') : esc_attr__('Enter selection mode', 'ads-destroyer'),
                'class' => $is_active ? 'adsd-selection-active' : '',
            ],
        ]);
    }
    
    /**
     * Enqueue admin bar assets.
     */
    public function enqueue_admin_bar_assets(): void {
        if (!$this->can_user_access_selection_mode()) {
            return;
        }
        
        // Only load assets if selection mode is active OR we're on admin pages (settings page)
        $is_selection_mode_active = $this->is_selection_mode_active();
        $is_admin_page = is_admin();
        
        if (!$is_selection_mode_active && !$is_admin_page) {
            return;
        }
        
        // Enqueue CSS file for overlay styles
        wp_enqueue_style(
            'adsd-style',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/css/style.min.css',
            [],
            ADSD_PLUGIN_VERSION
        );
        
        wp_enqueue_script(
            'adsd-app',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/js/app.js',
            ['jquery'],
            ADSD_PLUGIN_VERSION,
            true
        );
        
        
        wp_localize_script('adsd-app', 'adsdData', [
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('adsd_selection_mode'),
            'isActive' => $is_selection_mode_active,
            'strings' => [
                'enable' => __('Enable Selection Mode', 'ads-destroyer'),
                'disable' => __('Disable Selection Mode', 'ads-destroyer'),
                'selecting' => __('Selecting...', 'ads-destroyer'),
            ],
        ]);
        
        // Also create ADSD_CONFIG for compatibility with REST API
        wp_localize_script('adsd-app', 'ADSD_CONFIG', [
            'rest_url' => rest_url('adsd/v1'),
            'nonce' => wp_create_nonce('wp_rest'),
            'is_active' => $is_selection_mode_active,
        ]);
    }
    
    /**
     * Check if user can access selection mode.
     * 
     * @return bool
     */
    private function can_user_access_selection_mode(): bool {
        $allowed_roles = $this->options_repository->get_option('allowed_roles', ['administrator']);
        $user = wp_get_current_user();
        
        if (!$user || !$user->ID) {
            return false;
        }
        
        return !empty(array_intersect($user->roles, $allowed_roles));
    }
    
    /**
     * Check if selection mode is currently active.
     * 
     * @return bool
     */
    private function is_selection_mode_active(): bool {
        return isset($_GET['adsd_selection_mode_active']) && $_GET['adsd_selection_mode_active'] === '1';
    }

    /**
     * Get current URL.
     * 
     * @return string
     */
    private function get_current_url(): string {
        // Use WordPress function to get current URL
        return home_url($_SERVER['REQUEST_URI']);
    }

    /**
     * Add selection mode parameter to URL.
     * 
     * @param string $url
     * @return string
     */
    private function add_selection_mode_param(string $url): string {
        return add_query_arg('adsd_selection_mode_active', '1', $url);
    }

    /**
     * Remove selection mode parameter from URL.
     * 
     * @param string $url
     * @return string
     */
    private function remove_selection_mode_param(string $url): string {
        return remove_query_arg('adsd_selection_mode_active', $url);
    }
    
    /**
     * Get button title based on state.
     * 
     * @param bool $is_active
     * @return string
     */
    private function get_button_title(bool $is_active): string {
        return __('Disable ad', 'ads-destroyer');
    }
}