<?php

namespace Engelsystem\Http;

use Nyholm\Psr7\UploadedFile;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\UploadedFileInterface;
use Psr\Http\Message\UriInterface;
use Symfony\Component\HttpFoundation\File\UploadedFile as SymfonyFile;
use Symfony\Component\HttpFoundation\Request as SymfonyRequest;

class Request extends SymfonyRequest implements ServerRequestInterface
{
    use MessageTrait;

    /**
     * Get POST input
     *
     * @param string $key
     * @param mixed  $default
     * @return mixed
     */
    public function postData($key, $default = null)
    {
        return $this->request->get($key, $default);
    }

    /**
     * Get input data
     *
     * @param string $key
     * @param mixed  $default
     * @return mixed
     */
    public function input($key, $default = null)
    {
        return $this->get($key, $default);
    }

    /**
     * Checks if the input exists
     *
     * @param string $key
     * @return bool
     */
    public function has($key)
    {
        $value = $this->input($key);

        return !is_null($value);
    }

    /**
     * Checks if the POST data exists
     *
     * @param string $key
     * @return bool
     */
    public function hasPostData($key)
    {
        $value = $this->postData($key);

        return !is_null($value);
    }

    /**
     * Get the requested path
     *
     * @return string
     */
    public function path()
    {
        $pattern = trim($this->getPathInfo(), '/');

        return $pattern == '' ? '/' : $pattern;
    }

    /**
     * Return the current URL
     *
     * @return string
     */
    public function url()
    {
        return rtrim(preg_replace('/\?.*/', '', $this->getUri()), '/');
    }

    /**
     * Retrieves the message's request target.
     *
     *
     * Retrieves the message's request-target either as it will appear (for
     * clients), as it appeared at request (for servers), or as it was
     * specified for the instance (see withRequestTarget()).
     *
     * In most cases, this will be the origin-form of the composed URI,
     * unless a value was provided to the concrete implementation (see
     * withRequestTarget() below).
     *
     * If no URI is available, and no request-target has been specifically
     * provided, this method MUST return the string "/".
     *
     * @return string
     */
    public function getRequestTarget()
    {
        $query = $this->getQueryString();
        return '/' . $this->path() . (!empty($query) ? '?' . $query : '');
    }

    /**
     * Return an instance with the specific request-target.
     *
     * If the request needs a non-origin-form request-target — e.g., for
     * specifying an absolute-form, authority-form, or asterisk-form —
     * this method may be used to create an instance with the specified
     * request-target, verbatim.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * changed request target.
     *
     * @link http://tools.ietf.org/html/rfc7230#section-5.3 (for the various
     *     request-target forms allowed in request messages)
     * @param mixed $requestTarget
     * @return static
     */
    public function withRequestTarget($requestTarget)
    {
        return $this->create($requestTarget);
    }

    /**
     * Return an instance with the provided HTTP method.
     *
     * While HTTP method names are typically all uppercase characters, HTTP
     * method names are case-sensitive and thus implementations SHOULD NOT
     * modify the given string.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * changed request method.
     *
     * @param string $method Case-sensitive method.
     * @return static
     * @throws \InvalidArgumentException for invalid HTTP methods.
     */
    public function withMethod($method)
    {
        $new = clone $this;
        $new->setMethod($method);

        return $new;
    }

    /**
     * Returns an instance with the provided URI.
     *
     * This method MUST update the Host header of the returned request by
     * default if the URI contains a host component. If the URI does not
     * contain a host component, any pre-existing Host header MUST be carried
     * over to the returned request.
     *
     * You can opt-in to preserving the original state of the Host header by
     * setting `$preserveHost` to `true`. When `$preserveHost` is set to
     * `true`, this method interacts with the Host header in the following ways:
     *
     * - If the Host header is missing or empty, and the new URI contains
     *   a host component, this method MUST update the Host header in the returned
     *   request.
     * - If the Host header is missing or empty, and the new URI does not contain a
     *   host component, this method MUST NOT update the Host header in the returned
     *   request.
     * - If a Host header is present and non-empty, this method MUST NOT update
     *   the Host header in the returned request.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * new UriInterface instance.
     *
     * @link http://tools.ietf.org/html/rfc3986#section-4.3
     * @param UriInterface $uri          New request URI to use.
     * @param bool         $preserveHost Preserve the original state of the Host header.
     * @return static
     */
    public function withUri(UriInterface $uri, $preserveHost = false)
    {
        $new = $this->create($uri);
        if ($preserveHost) {
            $new->headers->set('HOST', $this->getHost());
        }

        return $new;
    }

    /**
     * Retrieve server parameters.
     *
     * Retrieves data related to the incoming request environment,
     * typically derived from PHP's $_SERVER superglobal. The data IS NOT
     * REQUIRED to originate from $_SERVER.
     *
     * @return array
     */
    public function getServerParams()
    {
        return $this->server->all();
    }

    /**
     * Retrieve cookies.
     *
     * Retrieves cookies sent by the client to the server.
     *
     * The data MUST be compatible with the structure of the $_COOKIE
     * superglobal.
     *
     * @return array
     */
    public function getCookieParams()
    {
        return $this->cookies->all();
    }

    /**
     * Return an instance with the specified cookies.
     *
     * The data IS NOT REQUIRED to come from the $_COOKIE superglobal, but MUST
     * be compatible with the structure of $_COOKIE. Typically, this data will
     * be injected at instantiation.
     *
     * This method MUST NOT update the related Cookie header of the request
     * instance, nor related values in the server params.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * updated cookie values.
     *
     * @param array $cookies Array of key/value pairs representing cookies.
     * @return static
     */
    public function withCookieParams(array $cookies)
    {
        $new = clone $this;
        $new->cookies = clone $this->cookies;
        $new->cookies->replace($cookies);

        return $new;
    }

    /**
     * Retrieve query string arguments.
     *
     * Retrieves the deserialized query string arguments, if any.
     *
     * Note: the query params might not be in sync with the URI or server
     * params. If you need to ensure you are only getting the original
     * values, you may need to parse the query string from `getUri()->getQuery()`
     * or from the `QUERY_STRING` server param.
     *
     * @return array
     */
    public function getQueryParams()
    {
        return $this->query->all();
    }

    /**
     * Return an instance with the specified query string arguments.
     *
     * These values SHOULD remain immutable over the course of the incoming
     * request. They MAY be injected during instantiation, such as from PHP's
     * $_GET superglobal, or MAY be derived from some other value such as the
     * URI. In cases where the arguments are parsed from the URI, the data
     * MUST be compatible with what PHP's parse_str() would return for
     * purposes of how duplicate query parameters are handled, and how nested
     * sets are handled.
     *
     * Setting query string arguments MUST NOT change the URI stored by the
     * request, nor the values in the server params.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * updated query string arguments.
     *
     * @param array $query Array of query string arguments, typically from
     *                     $_GET.
     * @return static
     */
    public function withQueryParams(array $query)
    {
        $new = clone $this;
        $new->query = clone $this->query;
        $new->query->replace($query);

        return $new;
    }

    /**
     * Retrieve normalized file upload data.
     *
     * This method returns upload metadata in a normalized tree, with each leaf
     * an instance of Psr\Http\Message\UploadedFileInterface.
     *
     * These values MAY be prepared from $_FILES or the message body during
     * instantiation, or MAY be injected via withUploadedFiles().
     *
     * @return array An array tree of UploadedFileInterface instances; an empty
     *     array MUST be returned if no data is present.
     */
    public function getUploadedFiles()
    {
        $files = [];
        /** @var SymfonyFile $file */
        foreach ($this->files as $file) {
            $files[] = new UploadedFile(
                $file->getRealPath(),
                $file->getSize(),
                $file->getError(),
                $file->getClientOriginalName(),
                $file->getMimeType()
            );
        }

        return $files;
    }

    /**
     * Create a new instance with the specified uploaded files.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * updated body parameters.
     *
     * @param array $uploadedFiles An array tree of UploadedFileInterface instances.
     * @return static
     * @throws \InvalidArgumentException if an invalid structure is provided.
     */
    public function withUploadedFiles(array $uploadedFiles)
    {
        $new = clone $this;
        $new->files = clone $this->files;

        $files = [];
        foreach ($uploadedFiles as $file) {
            /** @var UploadedFileInterface $file */
            $filename = tempnam(sys_get_temp_dir(), 'upload');
            $handle = fopen($filename, 'w');
            fwrite($handle, $file->getStream()->getContents());
            fclose($handle);

            $files[] = new SymfonyFile(
                $filename,
                $file->getClientFilename(),
                $file->getClientMediaType(),
                $file->getError()
            );
        }
        $new->files->add($files);

        return $new;
    }

    /**
     * Retrieve any parameters provided in the request body.
     *
     * If the request Content-Type is either application/x-www-form-urlencoded
     * or multipart/form-data, and the request method is POST, this method MUST
     * return the contents of $_POST.
     *
     * Otherwise, this method may return any results of deserializing
     * the request body content; as parsing returns structured content, the
     * potential types MUST be arrays or objects only. A null value indicates
     * the absence of body content.
     *
     * @return null|array|object The deserialized body parameters, if any.
     *     These will typically be an array or object.
     */
    public function getParsedBody()
    {
        return $this->request->all();
    }

    /**
     * Return an instance with the specified body parameters.
     *
     * These MAY be injected during instantiation.
     *
     * If the request Content-Type is either application/x-www-form-urlencoded
     * or multipart/form-data, and the request method is POST, use this method
     * ONLY to inject the contents of $_POST.
     *
     * The data IS NOT REQUIRED to come from $_POST, but MUST be the results of
     * deserializing the request body content. Deserialization/parsing returns
     * structured data, and, as such, this method ONLY accepts arrays or objects,
     * or a null value if nothing was available to parse.
     *
     * As an example, if content negotiation determines that the request data
     * is a JSON payload, this method could be used to create a request
     * instance with the deserialized parameters.
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * updated body parameters.
     *
     * @param null|array|object $data The deserialized body data. This will
     *                                typically be in an array or object.
     * @return static
     * @throws \InvalidArgumentException if an unsupported argument type is
     *                                provided.
     */
    public function withParsedBody($data)
    {
        $new = clone $this;
        $new->request = clone $this->request;

        $new->request->replace($data);

        return $new;
    }

    /**
     * Retrieve attributes derived from the request.
     *
     * The request "attributes" may be used to allow injection of any
     * parameters derived from the request: e.g., the results of path
     * match operations; the results of decrypting cookies; the results of
     * deserializing non-form-encoded message bodies; etc. Attributes
     * will be application and request specific, and CAN be mutable.
     *
     * @return array Attributes derived from the request.
     */
    public function getAttributes()
    {
        return $this->attributes->all();
    }

    /**
     * Retrieve a single derived request attribute.
     *
     * Retrieves a single derived request attribute as described in
     * getAttributes(). If the attribute has not been previously set, returns
     * the default value as provided.
     *
     * This method obviates the need for a hasAttribute() method, as it allows
     * specifying a default value to return if the attribute is not found.
     *
     * @param string $name    The attribute name.
     * @param mixed  $default Default value to return if the attribute does not exist.
     * @return mixed
     * @see getAttributes()
     */
    public function getAttribute($name, $default = null)
    {
        return $this->attributes->get($name, $default);
    }

    /**
     * Return an instance with the specified derived request attribute.
     *
     * This method allows setting a single derived request attribute as
     * described in getAttributes().
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that has the
     * updated attribute.
     *
     * @param string $name  The attribute name.
     * @param mixed  $value The value of the attribute.
     * @return static
     * @see getAttributes()
     */
    public function withAttribute($name, $value)
    {
        $new = clone $this;
        $new->attributes = clone $this->attributes;

        $new->attributes->set($name, $value);

        return $new;
    }

    /**
     * Return an instance that removes the specified derived request attribute.
     *
     * This method allows removing a single derived request attribute as
     * described in getAttributes().
     *
     * This method MUST be implemented in such a way as to retain the
     * immutability of the message, and MUST return an instance that removes
     * the attribute.
     *
     * @param string $name The attribute name.
     * @return static
     * @see getAttributes()
     */
    public function withoutAttribute($name)
    {
        $new = clone $this;
        $new->attributes = clone $this->attributes;

        $new->attributes->remove($name);

        return $new;
    }
}