<?php

namespace Ulmus\Api\Request;

use Ulmus\Api\Common\{MethodEnum, Message, Uri, };
use Ulmus\Api\Stream\{JsonStream, Stream};
use Psr\Http\Message\{MessageInterface, ServerRequestInterface, UriInterface, RequestInterface, StreamInterface};

class Request extends Message implements ServerRequestInterface
{
    protected int $code;

    protected string $message;

    protected string $target;

    protected UriInterface $uri;

    protected MethodEnum $method;

    protected array $cookies = [];

    protected array $files = [];

    public function __construct(string|UriInterface $uri, MethodEnum $method, null|StreamInterface $stream = null, array $headers = [])
    {
        $this->method = $method;
        $this->uri = Uri::from($uri);
        $this->stream = $stream ?? Stream::fromMemory();
        $this->setHeaders($headers  );
    }

    public function getRequestTarget(): string
    {
        if ( isset($this->target) ) {
            return $this->target;
        }

        $query = $this->uri->getQuery() ?: null;

        $target = $this->uri->getPath() . ( $query ? "?{$query}" : "" );

        return $target ?: '/';
    }

    public function withRequestTarget($requestTarget)
    {
        return (clone $this)->setRequestTarget($requestTarget);
    }

    public function setRequestTarget(string $target) : static
    {
        $this->target = $target;

        return $this;
    }

    public function getMethod()
    {
        return $this->method->value;
    }

    public function withMethod($method)
    {
        return (clone $this)->setMethod($method);
    }

    protected function setMethod(string $method) : static
    {
        $this->method = MethodEnum::from($method);

        return $this;
    }

    public function getUri() : UriInterface
    {
        return $this->uri;
    }

    public function withUri(UriInterface $uri, $preserveHost = false)
    {
        return (clone $this)->setUri($uri, $preserveHost);
    }

    protected function setUri(UriInterface|string $uri, bool $preserveHost = false) : static
    {
        $this->uri = Uri::from($uri);

        if ( ! $preserveHost || ! $this->hasHeader('Host') ) {
            $this->headers['Host'] = [ $this->renderHostHeader() ];
        }

        return $this;
    }

    protected function renderHostHeader(UriInterface $fromUri = null) : string
    {
        $fromUri ??= $this->uri;

        $port = $fromUri->getPort();

        return implode('', [
            $fromUri->getHost(), $port && ! in_array($port, Uri::IGNORE_HTTP_PORT) ? ":{$port}" : ""
        ]);
    }

    public function withQueryParams(array $query) : static
    {
        return (clone $this)->addQueryParams($query);
    }

    protected function addQueryParams(array $query) : static
    {
        $rebuilt = http_build_query(array_merge($this->getQueryParams(), $query), "", null,  PHP_QUERY_RFC3986);

        $this->getUri()->withQuery($rebuilt);

        return $this;
    }

    public function getServerParams() : array
    {
        return [];
    }

    public function getCookieParams() : array
    {
        return $this->cookies;
    }

    public function withCookieParams(array $cookies) : static
    {
        return (clone $this)->setCookies($cookies);
    }

    protected function setCookies(array $cookies) : static
    {
        $this->cookies = $cookies;

        return $this;
    }

    public function getQueryParams() : array
    {
        parse_str($this->getUri()->getQuery(), $query);

        return $query;
    }

    public function getUploadedFiles() : array
    {
        return $this->files;
    }

    public function withUploadedFiles(array $uploadedFiles) : static
    {
        return (clone $this)->setUploadedFiles($uploadedFiles);
    }

    protected function setUploadedFiles(array $uploadedFiles) : static
    {
        $this->files = $uploadedFiles;

        return $this;
    }

    public function getParsedBody() : null|array|object
    {
        $raw = $this->getBody()->getContents();

        $contentType = $this->getHeader('Content-Type')[0] ?? "application/x-www-form-urlencoded";

        switch($contentType) {
            case "application/x-www-form-urlencoded":
                parse_str($raw, $result);

                return $result;

            case "multipart/form-data":

                return [];

            case "application/json":
                return JsonStream::fromJsonEncoded( $raw )->decode();

        }

        return [ sprintf("Unsupported content type: %s", $contentType) ];
    }

    public function withParsedBody(mixed $data) : static
    {
        return (clone $this)->setBody(
            JsonStream::fromContent($data)
        );
    }

    public function getAttributes() : array
    {
        // TODO: Implement getAttributes() method.
    }

    public function getAttribute($name, $default = null) : mixed
    {
        // TODO: Implement getAttribute() method.
    }

    public function withAttribute($name, $value) : static
    {
        // TODO: Implement withAttribute() method.
    }

    public function withoutAttribute($name): static
    {
        // TODO: Implement withoutAttribute() method.
    }
}