<?php

/*
 * This file is part of Flarum.
 *
 * For detailed copyright and license information, please view the
 * LICENSE file that was distributed with this source code.
 */

namespace Flarum\Foundation\ErrorHandling\ExceptionHandler;

use Flarum\Foundation\ErrorHandling\HandledError;
use Flarum\Foundation\ValidationException;

class ValidationExceptionHandler
{
    public function handle(ValidationException $e)
    {
        return (new HandledError(
            $e, 'validation_error', 422
        ))->withDetails(array_merge(
            $this->buildDetails($e->getAttributes(), '/data/attributes'),
            $this->buildDetails($e->getRelationships(), '/data/relationships')
        ));
    }

    private function buildDetails(array $messages, $pointer): array
    {
        return array_map(function ($path, $detail) use ($pointer) {
            return [
                'detail' => $detail,
                'source' => ['pointer' => $pointer.'/'.$path]
            ];
        }, array_keys($messages), $messages);
    }
}
