<?php

namespace App\Models\FileManager;

use Illuminate\Database\Eloquent\Model;
use Psy\Exception\ErrorException;

class Directory extends Model
{
    /**
     * @var bool $timstamps have created_at and updated_at fields
     */
    public $timestamps = true;
    protected $fillable = [
        'name',
        'description',
        'parent_id',
        'user_id',
        'hidden'
    ];
    protected $casts = [
        'hidden'  => 'bool',
        'is_root' => 'bool'
    ];

    /**
     * Files in directory
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function files()
    {
        return $this->hasMany(File::class);
    }

    /**
     * Relationship with parent/sub directories
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function allSubdirectories()
    {
        return $this->hasMany(Directory::class, 'parent_id', 'id');
    }

    public function subdirectories()
    {
        $subdirectories = $this->allSubdirectories()
                               ->where('hidden', false);

        return $subdirectories;
    }

    public function delete()
    {
        // try to prevent from deleting root folder
        if ($this->is_root == true) {
            throw new ErrorException('Cannot delete root folder!');
        }

        return parent::delete();
    }
}