<?php

namespace App\Models;

use EloquentFilter\Filterable;
use Illuminate\Database\Eloquent\Model;

class Zone extends Model
{
    use Filterable;

    protected $fillable = ['name', 'parent_id', 'type', 'index', 'code'];

    public function parent()
    {
        return $this->belongsTo(self::class, 'parent_id');
    }

    public function children()
    {
        return $this->hasMany(self::class, 'parent_id');
    }

    public static function codeToZone($code = null)
    {
        $province = $city = $area = null;
        $zone = self::where('code', $code)->first();
        if($zone){
            if($zone->type == 'area'){
                $area = $zone;
                $city = $area->parent;
                $zone = $city;
            }
            if($zone->type == 'city'){
                $city = $zone;
                $province = $city->parent;
                $zone = $province;
            }
            if($zone->type == 'province'){
                $province = $zone;
            }
        }
        return array($province, $city, $area);
    }
}