<?php

namespace bff\db\illuminate\casts;

use Illuminate\Contracts\Database\Eloquent\CastsAttributes;

class Separated implements CastsAttributes
{
    /**
     * Values separator
     * @var string
     */
    protected $separator;

    public function __construct(?string $separator = null)
    {
        $this->separator = $separator ?: ',';
    }

    public function get($model, string $key, $value, array $attributes)
    {
        if (empty($value)) {
            return [];
        }
        return explode($this->separator, $value);
    }

    public function set($model, string $key, $value, array $attributes)
    {
        return implode($this->separator, $value);
    }
}