<?php
/**
 * Activator class.
 *
 * @package     AIContentGuide
 * @subpackage  AIContentGuide/includes
 */

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

/**
 * Class for plugin activation.
 */
class FULGID_AICOGU_Activator {

    /**
     * Activate the plugin.
     */
    public static function activate() {
        // Migrate old settings if they exist
        self::migrate_old_options();
        
        // Initialize default settings if they don't exist
        if (!get_option('fulgid_aicogu_settings')) {
            self::initialize_settings();
        }
        
        // Schedule initial file generation
        if (!wp_next_scheduled('fulgid_aicogu_regenerate_file')) {
            wp_schedule_single_event(time() + 60, 'fulgid_aicogu_regenerate_file');
        }
        
        // Add rewrite rules
        self::add_rewrite_rules();
        
        // Set activation timestamp
        update_option('fulgid_aicogu_activated', time());
    }

    /**
     * Migrate old options to new naming convention.
     */
    private static function migrate_old_options() {
        // Migrate settings
        $old_settings = get_option('ai_content_guide_settings');
        if ($old_settings && !get_option('fulgid_aicogu_settings')) {
            update_option('fulgid_aicogu_settings', $old_settings);
        }
        
        // Migrate file content
        $old_content = get_option('ai_content_guide_file_content');
        if ($old_content && !get_option('fulgid_aicogu_file_content')) {
            update_option('fulgid_aicogu_file_content', $old_content);
        }
        
        // Migrate full file content
        $old_full_content = get_option('ai_content_guide_full_file_content');
        if ($old_full_content && !get_option('fulgid_aicogu_full_file_content')) {
            update_option('fulgid_aicogu_full_file_content', $old_full_content);
        }
        
        // Migrate file updated timestamp
        $old_updated = get_option('ai_content_guide_file_updated');
        if ($old_updated && !get_option('fulgid_aicogu_file_updated')) {
            update_option('fulgid_aicogu_file_updated', $old_updated);
        }
        
        // Migrate activation timestamp
        $old_activated = get_option('ai_content_guide_activated');
        if ($old_activated && !get_option('fulgid_aicogu_activated')) {
            update_option('fulgid_aicogu_activated', $old_activated);
        }
        
        // Clean up old scheduled events
        wp_clear_scheduled_hook('ai_content_guide_regenerate_file');
        
        // Note: We don't delete old options immediately to allow for rollback
        // They can be cleaned up in a future version or manually
    }

    /**
     * Initialize default settings.
     */
    private static function initialize_settings() {
        $settings = array(
            'post_types' => array('post', 'page'),
            'taxonomies' => array('category', 'post_tag'),
            'include_taxonomies' => 'yes',
            'max_posts_per_type' => 20,
            'description_length' => 150,
            'file_method' => 'rewrite',
            'add_to_robots' => 'yes',
            'generate_full_file' => 'yes',
            'site_introduction' => 'This website provides information about our products, services, and company news.',
        );
        
        update_option('fulgid_aicogu_settings', $settings);
    }

    /**
     * Add rewrite rules.
     */
    private static function add_rewrite_rules() {
        add_rewrite_rule(
            '^llms\.txt$',
            'index.php?fulgid_aicogu_llms_txt=1',
            'top'
        );
        
        add_rewrite_rule(
            '^llms-full\.txt$',
            'index.php?fulgid_aicogu_llms_full_txt=1',
            'top'
        );
        
        flush_rewrite_rules();
    }
}