<?php

declare(strict_types=1);

/**
 * This file is part of CodeIgniter 4 framework.
 *
 * (c) CodeIgniter Foundation <admin@codeigniter.com>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace CodeIgniter\HTTP;

/**
 * Representation of an outgoing, client-side request.
 *
 * @see \CodeIgniter\HTTP\OutgoingRequestTest
 */
class OutgoingRequest extends Message implements OutgoingRequestInterface
{
 /**
 * Request method.
 *
 * @var string
 */
 protected $method;

 /**
 * A URI instance.
 *
 * @var URI|null
 */
 protected $uri;

 /**
 * @param string $method HTTP method
 * @param string|null $body
 */
 public function __construct(
 string $method,
 ?URI $uri = null,
 array $headers = [],
 $body = null,
 string $version = '1.1',
 ) {
 $this->method = $method;
 $this->uri = $uri;

 foreach ($headers as $header => $value) {
 $this->setHeader($header, $value);
 }

 $this->body = $body;
 $this->protocolVersion = $version;

 if (! $this->hasHeader('Host') && $this->uri->getHost() !== '') {
 $this->setHeader('Host', $this->getHostFromUri($this->uri));
 }
 }

 private function getHostFromUri(URI $uri): string
 {
 $host = $uri->getHost();

 return $host . ($uri->getPort() > 0 ? ':' . $uri->getPort() : '');
 }

 /**
 * Retrieves the HTTP method of the request.
 *
 * @return string Returns the request method (always uppercase)
 */
 public function getMethod(): string
 {
 return $this->method;
 }

 /**
 * Sets the request method. Used when spoofing the request.
 *
 * @return $this
 *
 * @deprecated Use withMethod() instead for immutability
 */
 public function setMethod(string $method)
 {
 $this->method = $method;

 return $this;
 }

 /**
 * Returns an instance with the specified method.
 *
 * @param string $method
 *
 * @return static
 */
 public function withMethod($method)
 {
 $request = clone $this;
 $request->method = $method;

 return $request;
 }

 /**
 * Retrieves the URI instance.
 *
 * @return URI|null
 */
 public function getUri()
 {
 return $this->uri;
 }

 /**
 * Returns an instance with the provided URI.
 *
 * @param URI $uri New request URI to use.
 * @param bool $preserveHost Preserve the original state of the Host header.
 *
 * @return static
 */
 public function withUri(URI $uri, $preserveHost = false)
 {
 $request = clone $this;
 $request->uri = $uri;

 if ($preserveHost) {
 if ($this->isHostHeaderMissingOrEmpty() && $uri->getHost() !== '') {
 $request->setHeader('Host', $this->getHostFromUri($uri));

 return $request;
 }

 if ($this->isHostHeaderMissingOrEmpty() && $uri->getHost() === '') {
 return $request;
 }

 if (! $this->isHostHeaderMissingOrEmpty()) {
 return $request;
 }
 }

 if ($uri->getHost() !== '') {
 $request->setHeader('Host', $this->getHostFromUri($uri));
 }

 return $request;
 }

 private function isHostHeaderMissingOrEmpty(): bool
 {
 if (! $this->hasHeader('Host')) {
 return true;
 }

 return $this->header('Host')->getValue() === '';
 }
}