<?php
/**
 * Cron operations for the plugin.
 *
 * This class handles all cron operations, including scheduling and executing
 * tasks.
 *
 * @package    QDR_Temporary_Shared_Storage
 * @since      1.0.0
 */
class QDR_TSS_Cron_Manager {

    /**
     * The plugin name.
     *
     * @since    1.0.0
     * @access   private
     * @var      string    $plugin_name    The name of this plugin.
     */
    private $plugin_name;

    /**
     * The plugin version.
     *
     * @since    1.0.0
     * @access   private
     * @var      string    $version    The version of this plugin.
     */
    private $version;

    /**
     * Initialize the class and set its properties.
     *
     * @since    1.0.0
     * @param    string    $plugin_name    The name of this plugin.
     * @param    string    $version        The version of this plugin.
     */
    public function __construct($plugin_name, $version) {
        $this->plugin_name = $plugin_name;
        $this->version = $version;
        
        // Schedule the purge event if not scheduled
        if (!wp_next_scheduled('qdr_tss_purge_expired_files')) {
            wp_schedule_event(time(), 'hourly', 'qdr_tss_purge_expired_files');
        }
    }

    /**
     * Purge expired files.
     *
     * @since 1.0.0
     * @return int Number of files purged.
     */
    public function purge_expired_files() {
        // Get database manager
        $db_manager = QDR_TSS_DB_Manager::instance();
        
        // Get file manager
        $file_manager = QDR_TSS_File_Manager::instance();
        
        // Get expired items
        $expired_items = $db_manager->get_expired_items();
        
        $purged_count = 0;
        
        // Delete files and database records
        foreach ($expired_items as $item) {
            // Delete file
            $file_manager->delete_file($item->file_path);
            
            // Delete from database
            $db_manager->delete_item($item->id);
            
            $purged_count++;
        }
        
        // Clean up empty directories
        $file_manager->cleanup_empty_directories();
        
        return $purged_count;
    }

    /**
     * Manually purge expired files.
     *
     * @since 1.0.0
     * @return int Number of files purged.
     */
    public function manual_purge_expired_files() {
        return $this->purge_expired_files();
    }

    /**
     * Schedule the purge event.
     *
     * @since 1.0.0
     * @return void
     */
    public function schedule_purge_event() {
        if (!wp_next_scheduled('qdr_tss_purge_expired_files')) {
            wp_schedule_event(time(), 'hourly', 'qdr_tss_purge_expired_files');
        }
    }

    /**
     * Unschedule the purge event.
     *
     * @since 1.0.0
     * @return void
     */
    public function unschedule_purge_event() {
        $timestamp = wp_next_scheduled('qdr_tss_purge_expired_files');
        if ($timestamp) {
            wp_unschedule_event($timestamp, 'qdr_tss_purge_expired_files');
        }
    }
}