<?php

declare(strict_types=1);

namespace Intervention\Image\Drivers;

use Intervention\Image\Interfaces\EncodedImageInterface;
use Intervention\Image\Interfaces\EncoderInterface;
use Intervention\Image\Interfaces\ImageInterface;

abstract class AbstractEncoder implements EncoderInterface
{
    public const DEFAULT_QUALITY = 75;

    /**
     * {@inheritdoc}
     *
     * @see EncoderInterface::encode()
     */
    public function encode(ImageInterface $image): EncodedImageInterface
    {
        return $image->encode($this);
    }

    /**
     * Get return value of callback through output buffer
     *
     * @param callable $callback
     * @return string
     */
    protected function buffered(callable $callback): string
    {
        ob_start();
        $callback();
        $buffer = ob_get_contents();
        ob_end_clean();

        return $buffer;
    }
}