<?php
/**
 * Admin class.
 *
 * @package     AIContentGuide
 * @subpackage  AIContentGuide/admin
 */

// If this file is called directly, abort.
if (!defined('ABSPATH')) {
    exit;
}

/**
 * Class for admin functionality.
 */
class FULGID_AICOGU_Admin {

    /**
     * Initialize the class.
     */
    public function __construct() {
        // Register settings
        add_action('admin_init', array($this, 'register_settings'));
        
        // Add AJAX handlers
        add_action('wp_ajax_fulgid_aicogu_regenerate', array($this, 'ajax_regenerate_file'));
        add_action('wp_ajax_fulgid_aicogu_preview', array($this, 'ajax_preview_file'));
    }

    /**
     * Register plugin settings.
     */
    public function register_settings() {
        register_setting(
            'fulgid_aicogu_settings_group',
            'fulgid_aicogu_settings',
            array($this, 'sanitize_settings')
        );
    }

    /**
     * Sanitize settings.
     *
     * @param array $input The settings input.
     * @return array Sanitized settings.
     */
    public function sanitize_settings($input) {
        $sanitized = array();
        
        // Post types
        if (isset($input['post_types']) && is_array($input['post_types'])) {
            $sanitized['post_types'] = array_map('sanitize_text_field', $input['post_types']);
        } else {
            $sanitized['post_types'] = array('post', 'page');
        }
        
        // Include taxonomies
        $sanitized['include_taxonomies'] = isset($input['include_taxonomies']) ? 'yes' : 'no';
        
        // Taxonomies
        if (isset($input['taxonomies']) && is_array($input['taxonomies'])) {
            $sanitized['taxonomies'] = array_map('sanitize_text_field', $input['taxonomies']);
        } else {
            $sanitized['taxonomies'] = array('category', 'post_tag');
        }
        
        // Max posts per type
        $sanitized['max_posts_per_type'] = isset($input['max_posts_per_type']) ? absint($input['max_posts_per_type']) : 20;
        
        // Description length
        $sanitized['description_length'] = isset($input['description_length']) ? absint($input['description_length']) : 150;
        
        // File method
        $sanitized['file_method'] = isset($input['file_method']) && in_array($input['file_method'], array('direct', 'rewrite')) ? $input['file_method'] : 'rewrite';
        
        // Add to robots.txt
        $sanitized['add_to_robots'] = isset($input['add_to_robots']) ? 'yes' : 'no';
        
        // Generate full file
        $sanitized['generate_full_file'] = isset($input['generate_full_file']) ? 'yes' : 'no';
        
        // Site introduction
        if (isset($input['site_introduction'])) {
            $sanitized['site_introduction'] = wp_kses_post($input['site_introduction']);
        }
        
        // Custom content
        if (isset($input['custom_content'])) {
            $sanitized['custom_content'] = wp_kses_post($input['custom_content']);
        }
        
        // Schedule file regeneration
        wp_schedule_single_event(time() + 30, 'fulgid_aicogu_regenerate_file');
        
        return $sanitized;
    }

    /**
     * Handle AJAX request to regenerate file.
     */
    public function ajax_regenerate_file() {
        // Check nonce
        check_ajax_referer('fulgid-aicogu-nonce', 'nonce');
        
        // Check permissions
        if (!current_user_can('manage_options')) {
            wp_send_json_error(array('message' => esc_html__('You do not have permission to do this.', 'ai-content-guide-llms-text-generator')));
        }
        
        // Regenerate file
        $content_analyzer = new FULGID_AICOGU_Content_Analyzer();
        $file_manager = new FULGID_AICOGU_File_Manager();
        
        // Get content
        $content = $content_analyzer->analyze_site_content();
        
        // Generate and save file
        $result = $file_manager->generate_file($content);
        
        // Generate full file if enabled
        $settings = get_option('fulgid_aicogu_settings', array());
        if (!empty($settings['generate_full_file']) && 'yes' === $settings['generate_full_file']) {
            $file_manager->generate_full_file($content);
        }
        
        // Update last updated time
        update_option('fulgid_aicogu_file_updated', time());
        
        if ($result) {
            wp_send_json_success(array(
                'message' => esc_html__('File regenerated successfully!', 'ai-content-guide-llms-text-generator'),
                'timestamp' => date_i18n(get_option('date_format') . ' ' . get_option('time_format'), time()),
            ));
        } else {
            wp_send_json_error(array('message' => esc_html__('Error regenerating file. Please check your settings.', 'ai-content-guide-llms-text-generator')));
        }
    }

    /**
     * Handle AJAX request to preview file.
     */
    public function ajax_preview_file() {
        // Check nonce
        check_ajax_referer('fulgid-aicogu-nonce', 'nonce');
        
        // Check permissions
        if (!current_user_can('manage_options')) {
            wp_send_json_error(array('message' => esc_html__('You do not have permission to do this.', 'ai-content-guide-llms-text-generator')));
        }
        
        // Generate preview content
        $content_analyzer = new FULGID_AICOGU_Content_Analyzer();
        $content = $content_analyzer->analyze_site_content();
        
        wp_send_json_success(array('content' => $content));
    }
}

// Initialize admin
new FULGID_AICOGU_Admin();