<?php

declare(strict_types=1);

namespace AdsDestroyer\Admin;

use AdsDestroyer\Settings\OptionsRepository;
use AdsDestroyer\Security\NonceService;
use AdsDestroyer\Logging\Logger;

/**
 * Assets Manager for AdsDestroyer plugin.
 * 
 * This class handles the enqueuing of CSS and JavaScript assets
 * for both frontend and admin areas of the plugin.
 * 
 * @since 1.0.0
 */
final class AssetsManager {
    
    private OptionsRepository $options_repository;
    private NonceService $nonce_service;
    private InlineCssGenerator $inline_css_generator;
    
    public function __construct(OptionsRepository $options_repository, NonceService $nonce_service, Logger $logger) {
        $this->options_repository = $options_repository;
        $this->nonce_service = $nonce_service;
        $this->inline_css_generator = new InlineCssGenerator($options_repository, $logger);
    }
    
    /**
     * Initialize asset management.
     */
    public function init(): void {
        add_action('wp_enqueue_scripts', [$this, 'enqueue_frontend_assets']);
        add_action('admin_enqueue_scripts', [$this, 'enqueue_admin_assets']);
        // Inject inline CSS early in head (priority 1)
        add_action('admin_head', [$this->inline_css_generator, 'inject_inline_css'], 1);
    }
    
    /**
     * Enqueue frontend assets.
     */
    public function enqueue_frontend_assets(): void {
        // Always enqueue main CSS for overlay styles
        wp_enqueue_style(
            'adsd-style',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/css/style.min.css',
            [],
            ADSD_PLUGIN_VERSION
        );
        
        // Only load JavaScript for users with proper roles
        if (!$this->should_load_frontend_assets()) {
            return;
        }
        
        // Enqueue main JavaScript
        wp_enqueue_script(
            'adsd-app',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/js/app.js',
            ['jquery'],
            ADSD_PLUGIN_VERSION,
            true
        );
        
        // Localize script with data
        wp_localize_script('adsd-app', 'adsdData', [
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'nonce' => $this->nonce_service->create_nonce('adsd_selection_mode'),
            'isActive' => $this->is_selection_mode_active(),
            'strings' => [
                'selectElement' => __('Select Element', 'ads-destroyer'),
                'cancel' => __('Cancel', 'ads-destroyer'),
                'confirm' => __('Confirm', 'ads-destroyer'),
                'elementSelected' => __('Element Selected', 'ads-destroyer'),
                'xpathGenerated' => __('XPath Generated', 'ads-destroyer'),
            ],
        ]);
    }
    
    /**
     * Enqueue admin assets.
     * 
     * @param string $hook_suffix
     */
    public function enqueue_admin_assets(string $hook_suffix): void {
        // Always enqueue main CSS for overlay styles
        wp_enqueue_style(
            'adsd-style',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/css/style.min.css',
            [],
            '1.0.0'
        );
        
        // Only load admin-specific assets on our admin pages
        if (strpos($hook_suffix, 'ads-destroyer') === false) {
            return;
        }
        
        // Enqueue admin CSS
        wp_enqueue_style(
            'adsd-admin-style',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/css/admin-settings-style.min.css',
            [],
            '1.0.0'
        );
        
        // Enqueue admin JavaScript
        wp_enqueue_script(
            'adsd-admin-settings',
            plugin_dir_url(\ADSD_PLUGIN_FILE) . 'build/js/admin-settings.js',
            ['jquery', 'wp-util'],
            '1.0.0',
            true
        );
        
        // Localize admin script
        wp_localize_script('adsd-admin-settings', 'adsdAdminData', [
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'nonce' => $this->nonce_service->create_nonce('adsd_admin_actions'),
            'strings' => [
                'confirmDelete' => __('Are you sure you want to delete this rule?', 'ads-destroyer'),
                'ruleSaved' => __('Rule saved successfully', 'ads-destroyer'),
                'ruleDeleted' => __('Rule deleted successfully', 'ads-destroyer'),
                'error' => __('An error occurred', 'ads-destroyer'),
                'testingXPath' => __('Testing XPath...', 'ads-destroyer'),
                'xPathValid' => __('XPath is valid', 'ads-destroyer'),
                'xPathInvalid' => __('XPath is invalid', 'ads-destroyer'),
            ],
        ]);
    }
    
    /**
     * Check if frontend assets should be loaded.
     * 
     * @return bool
     */
    private function should_load_frontend_assets(): 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($_SESSION['adsd_selection_mode']) && $_SESSION['adsd_selection_mode'] === true;
    }
}