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<?php

/**
 * @see       https://github.com/laminas/laminas-diactoros for the canonical source repository
 * @copyright https://github.com/laminas/laminas-diactoros/blob/master/COPYRIGHT.md
 * @license   https://github.com/laminas/laminas-diactoros/blob/master/LICENSE.md New BSD License
 */

declare(strict_types=1);

namespace Laminas\Diactoros;

use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\StreamInterface;
use Psr\Http\Message\UploadedFileInterface;
use Psr\Http\Message\UriInterface;

use function array_key_exists;
use function is_array;

/**
 * Server-side HTTP request
 *
 * Extends the Request definition to add methods for accessing incoming data,
 * specifically server parameters, cookies, matched path parameters, query
 * string arguments, body parameters, and upload file information.
 *
 * "Attributes" are discovered via decomposing the request (and usually
 * specifically the URI path), and typically will be injected by the application.
 *
 * Requests are considered immutable; all methods that might change state are
 * implemented such that they retain the internal state of the current
 * message and return a new instance that contains the changed state.
 */
class ServerRequest implements ServerRequestInterface
{
    use RequestTrait;

/**
     * @var array
     */
    private $attributes = [];

/**
     * @var array
     */
    private $cookieParams = [];

/**
     * @var null|array|object
     */
    private $parsedBody;

/**
     * @var array
     */
    private $queryParams = [];

/**
     * @var array
     */
    private $serverParams;

/**
     * @var array
     */
    private $uploadedFiles;

/**
     * @param array $serverParams Server parameters, typically from $_SERVER
     * @param array $uploadedFiles Upload file information, a tree of UploadedFiles
     * @param null|string|UriInterface $uri URI for the request, if any.
     * @param null|string $method HTTP method for the request, if any.
     * @param string|resource|StreamInterface $body Message body, if any.
     * @param array $headers Headers for the message, if any.
     * @param array $cookies Cookies for the message, if any.
     * @param array $queryParams Query params for the message, if any.
     * @param null|array|object $parsedBody The deserialized body parameters, if any.
     * @param string $protocol HTTP protocol version.
     * @throws Exception\InvalidArgumentException for any invalid value.
     */
    public function __construct(
        array $serverParams = [],
        array $uploadedFiles = [],
        $uri = null,
        string $method = null,
        $body = 'php://input',
        array $headers = [],
        array $cookies = [],
        array $queryParams = [],
        $parsedBody = null,
        string $protocol = '1.1'
    ) {
        $this->validateUploadedFiles($uploadedFiles);

if ($body === 'php://input') {
            $body = new PhpInputStream();
        }

$this->initialize($uri, $method, $body, $headers);
        $this->serverParams  = $serverParams;
        $this->uploadedFiles = $uploadedFiles;
        $this->cookieParams  = $cookies;
        $this->queryParams   = $queryParams;
        $this->parsedBody    = $parsedBody;
        $this->protocol      = $protocol;
    }

/**
     * {@inheritdoc}
     */
    public function getServerParams() : array
    {
        return $this->serverParams;
    }

/**
     * {@inheritdoc}
     */
    public function getUploadedFiles() : array
    {
        return $this->uploadedFiles;
    }

/**
     * {@inheritdoc}
     */
    public function withUploadedFiles(array $uploadedFiles) : ServerRequest
    {
        $this->validateUploadedFiles($uploadedFiles);
        $new = clone $this;
        $new->uploadedFiles = $uploadedFiles;
        return $new;
    }

/**
     * {@inheritdoc}
     */
    public function getCookieParams() : array
    {
        return $this->cookieParams;
    }

/**
     * {@inheritdoc}
     */
    public function withCookieParams(array $cookies) : ServerRequest
    {
        $new = clone $this;
        $new->cookieParams = $cookies;
        return $new;
    }

/**
     * {@inheritdoc}
     */
    public function getQueryParams() : array
    {
        return $this->queryParams;
    }

/**
     * {@inheritdoc}
     */
    public function withQueryParams(array $query) : ServerRequest
    {
        $new = clone $this;
        $new->queryParams = $query;
        return $new;
    }

/**
     * {@inheritdoc}
     */
    public function getParsedBody()
    {
        return $this->parsedBody;
    }

/**
     * {@inheritdoc}
     */
    public function withParsedBody($data) : ServerRequest
    {
        if (! is_array($data) && ! is_object($data) && null !== $data) {
            throw new Exception\InvalidArgumentException(sprintf(
                '%s expects a null, array, or object argument; received %s',
                __METHOD__,
                gettype($data)
            ));
        }

$new = clone $this;
        $new->parsedBody = $data;
        return $new;
    }

/**
     * {@inheritdoc}
     */
    public function getAttributes() : array
    {
        return $this->attributes;
    }

/**
     * {@inheritdoc}
     */
    public function getAttribute($attribute, $default = null)
    {
        if (! array_key_exists($attribute, $this->attributes)) {
            return $default;
        }

return $this->attributes[$attribute];
    }

/**
     * {@inheritdoc}
     */
    public function withAttribute($attribute, $value) : ServerRequest
    {
        $new = clone $this;
        $new->attributes[$attribute] = $value;
        return $new;
    }

/**
     * {@inheritdoc}
     */
    public function withoutAttribute($attribute) : ServerRequest
    {
        $new = clone $this;
        unset($new->attributes[$attribute]);
        return $new;
    }

/**
     * Recursively validate the structure in an uploaded files array.
     *
     * @throws Exception\InvalidArgumentException if any leaf is not an UploadedFileInterface instance.
     */
    private function validateUploadedFiles(array $uploadedFiles) : void
    {
        foreach ($uploadedFiles as $file) {
            if (is_array($file)) {
                $this->validateUploadedFiles($file);
                continue;
            }

if (! $file instanceof UploadedFileInterface) {
                throw new Exception\InvalidArgumentException('Invalid leaf in uploaded files structure');
            }
        }
    }
}