HummingBirdAnimeClient/src/API/APIRequestBuilder.php

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<?php declare(strict_types=1);
/**
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* Hummingbird Anime List Client
*
* An API client for Kitsu and MyAnimeList to manage anime and manga watch lists
*
* PHP version 7
*
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* @package HummingbirdAnimeClient
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2015 - 2017 Timothy J. Warren
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 4.0
* @link https://git.timshomepage.net/timw4mail/HummingBirdAnimeClient
*/
namespace Aviat\AnimeClient\API;
use function Amp\Promise\wait;
use Amp;
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use Amp\Artax\{FormBody, Request};
use Aviat\Ion\Json;
use InvalidArgumentException;
use Psr\Log\LoggerAwareTrait;
/**
* Wrapper around Artax to make it easier to build API requests
*/
class APIRequestBuilder {
use LoggerAwareTrait;
/**
* Url prefix for making url requests
* @var string
*/
protected $baseUrl = '';
/**
* Url path of the request
* @var string
*/
protected $path = '';
/**
* Query string for the request
* @var string
*/
protected $query = '';
/**
* Default request headers
* @var array
*/
protected $defaultHeaders = [];
/**
* Valid HTTP request methos
* @var array
*/
protected $validMethods = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'];
/**
* The current request
* @var \Amp\Artax\Request
*/
protected $request;
/**
* Set an authorization header
*
* @param string $type The type of authorization, eg, basic, bearer, etc.
* @param string $value The authorization value
* @return self
*/
public function setAuth(string $type, string $value): self
{
$authString = ucfirst($type) . ' ' . $value;
$this->setHeader('Authorization', $authString);
return $this;
}
/**
* Set a basic authentication header
*
* @param string $username
* @param string $password
* @return self
*/
public function setBasicAuth(string $username, string $password): self
{
$this->setAuth('basic', base64_encode($username . ':' . $password));
return $this;
}
/**
* Set the request body
*
* @param FormBody|string $body
* @throws \TypeError
* @return self
*/
public function setBody($body): self
{
$this->request = $this->request->withBody($body);
return $this;
}
/**
* Set body as form fields
*
* @param array $fields Mapping of field names to values
* @throws \TypeError
* @return self
*/
public function setFormFields(array $fields): self
{
$body = new FormBody();
$body->addFields($fields);
return $this->setBody($body);
}
/**
* Unset a request header
*
* @param string $name
* @return self
*/
public function unsetHeader(string $name): self
{
$this->request = $this->request->withoutHeader($name);
return $this;
}
/**
* Set a request header
*
* @param string $name
* @param string $value
* @return self
*/
public function setHeader(string $name, string $value = NULL): self
{
if (NULL === $value)
{
$this->unsetHeader($name);
}
else
{
$this->request = $this->request->withHeader($name, $value);
}
return $this;
}
/**
* Set multiple request headers
*
* name => value
*
* @param array $headers
* @return self
*/
public function setHeaders(array $headers): self
{
foreach ($headers as $name => $value)
{
$this->setHeader($name, $value);
}
return $this;
}
/**
* Set the request body
*
* @param mixed $body
* @throws \TypeError
* @return self
*/
public function setJsonBody($body): self
{
$requestBody = ( ! is_scalar($body))
? Json::encode($body)
: $body;
return $this->setBody($requestBody);
}
/**
* Append a query string in array format
*
* @param array $params
* @return self
*/
public function setQuery(array $params): self
{
$this->query = http_build_query($params);
return $this;
}
/**
* Return the promise for the current request
*
* @throws \Throwable
* @return \Amp\Artax\Request
*/
public function getFullRequest(): Request
{
$this->buildUri();
if ($this->logger)
{
$this->logger->debug('API Request', [
'request_url' => $this->request->getUri(),
'request_headers' => $this->request->getHeaders(),
'request_body' => wait(
$this->request->getBody()
->createBodyStream()
->read()
)
]);
}
return $this->request;
}
/**
* Create a new http request
*
* @param string $type
* @param string $uri
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* @throws InvalidArgumentException
* @return self
*/
public function newRequest(string $type, string $uri): self
{
if ( ! \in_array($type, $this->validMethods, TRUE))
{
throw new InvalidArgumentException('Invalid HTTP method');
}
$realUrl = (strpos($uri, '//') !== FALSE)
? $uri
: $this->baseUrl . $uri;
$this->resetState($realUrl, $type);
$this->path = $uri;
// Actually create the full url!
$this->buildUri();
if ( ! empty($this->defaultHeaders))
{
$this->setHeaders($this->defaultHeaders);
}
return $this;
}
/**
* Create the full request url
*
* @return Request
*/
private function buildUri(): Request
{
$url = (strpos($this->path, '//') !== FALSE)
? $this->path
: $this->baseUrl . $this->path;
if ( ! empty($this->query))
{
$url .= '?' . $this->query;
}
$this->request = $this->request->withUri($url);
return $this->request;
}
/**
* Reset the class state for a new request
*
* @param string $url
* @param string $type
* @return void
*/
private function resetState($url, $type = 'GET')
{
$requestUrl = $url ?: $this->baseUrl;
$this->path = '';
$this->query = '';
$this->request = (new Request($requestUrl))
->withMethod($type);
}
}