<?php

namespace App\Classes\Traits;

use App\Classes\AttachmentsManager;

trait ManagesAttachments
{
    private array $attachmentsManagers = [];

    /**
     * Register an attachments manager for specified filename
     */
    private function registerAttachmentsManager(string $kind): AttachmentsManager
    {
        if (!array_key_exists($kind, $this->attachmentsManagers)) {
            $this->attachmentsManagers[$kind] = new AttachmentsManager($kind, $this->dataDir, $this->disk);
        }

        return $this->attachmentsManagers[$kind];
    }

    /**
     * Load all attachments files
     */
    private function loadAttachments()
    {
        foreach ($this->attachmentsManagers as $manager) {
            $manager->load();
        }
    }

    /**
     * Save all attachments files that needs to be
     */
    private function saveAttachments()
    {
        foreach ($this->attachmentsManagers as $manager) {
            $manager->save();
        }
    }

    /**
     * Return an instance of attachments manager for specified kind of files
     */
    public function attachments(string $kind): AttachmentsManager
    {
        return $this->registerAttachmentsManager($kind);
    }
}