<?php

/*
 * This file is part of the NelmioApiDocBundle package.
 *
 * (c) Nelmio
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Nelmio\ApiDocBundle\Render\Html;

use InvalidArgumentException;
use Nelmio\ApiDocBundle\Render\OpenApiRenderer;
use Nelmio\ApiDocBundle\Render\RenderOpenApi;
use OpenApi\Annotations\OpenApi;
use OpenApi\Annotations\Server;
use Twig\Environment;

class HtmlOpenApiRenderer implements OpenApiRenderer
{
    /**
     * @var Environment|\Twig_Environment
     */
    private $twig;

    public function __construct($twig)
    {
        if (!$twig instanceof \Twig_Environment && !$twig instanceof Environment) {
            throw new InvalidArgumentException(sprintf('Providing an instance of "%s" as twig is not supported.', get_class($twig)));
        }
        $this->twig = $twig;
    }

    public function getFormat(): string
    {
        return RenderOpenApi::HTML;
    }

    public function render(OpenApi $spec, array $options = []): string
    {
        $options += [
            'server_url' => null,
        ];

        if ($options['server_url']) {
            $spec->servers = [new Server(['url' => $options['server_url']])];
        }

        return $this->twig->render(
            '@NelmioApiDoc/SwaggerUi/index.html.twig',
            ['swagger_data' => ['spec' => json_decode($spec->toJson(), true)]]
        );
    }
}