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<?php

namespace Selective\Validation\Encoder;

use UnexpectedValueException;

/**

* Encoder interface.

final class JsonEncoder implements EncoderInterface

{

/**

* Encode the given data to string.

* @param mixed $data The data

* @throws UnexpectedValueException

* @return string The encoded string

public function encode($data): string

{

$result = json_encode($data);

if ($result === false) {

throw new UnexpectedValueException(

sprintf('JSON encoding failed. Code: %s. Error: %s.', json_last_error(), json_last_error_msg())

);

}

return $result;

}

/**

* Return MIME compatible content type.

* @return string Response content type

public function getContentType(): string

{

return 'application/json';

}