Use PSR-18 (#522)

* Use PSR-18

* minor fixes

* phpstan fixes

* cs

composer.json

@@ -3,10 +3,10 @@
     "description": "The Mailgun SDK provides methods for all API functions.",
     "require": {
         "php": "^7.1",
-        "php-http/httplug": "^1.0 || ^2.0",
+        "psr/http-client": "^1.0",
         "php-http/multipart-stream-builder": "^1.0",
-        "php-http/client-common": "^1.9",
-        "php-http/discovery": "^1.0",
+        "php-http/client-common": "^1.9 || ^2.0",
+        "php-http/discovery": "^1.6",
         "webmozart/assert": "^1.2"
     },
     "require-dev": {

phpstan.neon

@@ -1,5 +1,7 @@
 parameters:
-	level: 5
-	paths:
-	  - src
+    level: 5
+    paths:
+      - src
 
+    excludes_analyse:
+        - %currentWorkingDirectory%/src/HttpClient/Plugin/HistoryTrait.php

src/Api/HttpApi.php

@@ -11,14 +11,14 @@ declare(strict_types=1);
 
 namespace Mailgun\Api;
 
-use Http\Client\Exception as HttplugException;
-use Http\Client\HttpClient;
 use Mailgun\Exception\UnknownErrorException;
 use Mailgun\Hydrator\Hydrator;
 use Mailgun\Hydrator\NoopHydrator;
 use Mailgun\Exception\HttpClientException;
 use Mailgun\Exception\HttpServerException;
 use Mailgun\HttpClient\RequestBuilder;
+use Psr\Http\Client as Psr18;
+use Psr\Http\Client\ClientInterface;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -29,7 +29,7 @@ abstract class HttpApi
     /**
      * The HTTP client.
      *
-     * @var HttpClient
+     * @var ClientInterface
      */
     protected $httpClient;
 
@@ -43,7 +43,7 @@ abstract class HttpApi
      */
     protected $requestBuilder;
 
-    public function __construct(HttpClient $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator)
+    public function __construct(ClientInterface $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator)
     {
         $this->httpClient = $httpClient;
         $this->requestBuilder = $requestBuilder;
@@ -113,7 +113,7 @@ abstract class HttpApi
             $response = $this->httpClient->sendRequest(
                 $this->requestBuilder->create('GET', $path, $requestHeaders)
             );
-        } catch (HttplugException\NetworkException $e) {
+        } catch (Psr18\NetworkExceptionInterface $e) {
             throw HttpServerException::networkError($e);
         }
 
@@ -145,7 +145,7 @@ abstract class HttpApi
             $response = $this->httpClient->sendRequest(
                 $this->requestBuilder->create('POST', $path, $requestHeaders, $body)
             );
-        } catch (HttplugException\NetworkException $e) {
+        } catch (Psr18\NetworkExceptionInterface $e) {
             throw HttpServerException::networkError($e);
         }
 
@@ -165,7 +165,7 @@ abstract class HttpApi
             $response = $this->httpClient->sendRequest(
                 $this->requestBuilder->create('PUT', $path, $requestHeaders, $this->createRequestBody($parameters))
             );
-        } catch (HttplugException\NetworkException $e) {
+        } catch (Psr18\NetworkExceptionInterface $e) {
             throw HttpServerException::networkError($e);
         }
 
@@ -185,7 +185,7 @@ abstract class HttpApi
             $response = $this->httpClient->sendRequest(
                 $this->requestBuilder->create('DELETE', $path, $requestHeaders, $this->createRequestBody($parameters))
             );
-        } catch (HttplugException\NetworkException $e) {
+        } catch (Psr18\NetworkExceptionInterface $e) {
             throw HttpServerException::networkError($e);
         }
 

src/Api/Suppression.php

@@ -11,11 +11,11 @@ declare(strict_types=1);
 
 namespace Mailgun\Api;
 
-use Http\Client\HttpClient;
 use Mailgun\Api\Suppression\Bounce;
 use Mailgun\Api\Suppression\Complaint;
 use Mailgun\Api\Suppression\Unsubscribe;
 use Mailgun\Hydrator\Hydrator;
+use Psr\Http\Client\ClientInterface;
 use Mailgun\HttpClient\RequestBuilder;
 
 /**
@@ -26,7 +26,7 @@ use Mailgun\HttpClient\RequestBuilder;
 class Suppression
 {
     /**
-     * @var HttpClient
+     * @var ClientInterface
      */
     private $httpClient;
 
@@ -40,7 +40,7 @@ class Suppression
      */
     private $hydrator;
 
-    public function __construct(HttpClient $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator)
+    public function __construct(ClientInterface $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator)
     {
         $this->httpClient = $httpClient;
         $this->requestBuilder = $requestBuilder;

src/Api/Webhook.php

@@ -11,7 +11,6 @@ declare(strict_types=1);
 
 namespace Mailgun\Api;
 
-use Http\Client\HttpClient;
 use Mailgun\Assert;
 use Mailgun\Hydrator\Hydrator;
 use Mailgun\Model\Webhook\CreateResponse;
@@ -21,6 +20,7 @@ use Mailgun\Model\Webhook\ShowResponse;
 use Mailgun\Model\Webhook\UpdateResponse;
 use Mailgun\HttpClient\RequestBuilder;
 use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Client\ClientInterface;
 
 /**
  * @author Tobias Nyholm <tobias.nyholm@gmail.com>
@@ -32,7 +32,7 @@ class Webhook extends HttpApi
      */
     private $apiKey;
 
-    public function __construct(HttpClient $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator, string $apiKey)
+    public function __construct(ClientInterface $httpClient, RequestBuilder $requestBuilder, Hydrator $hydrator, string $apiKey)
     {
         parent::__construct($httpClient, $requestBuilder, $hydrator);
         $this->apiKey = $apiKey;

src/Exception/HttpServerException.php

@@ -23,7 +23,7 @@ final class HttpServerException extends \RuntimeException implements Exception
         return new self('An unexpected error occurred at Mailgun\'s servers. Try again later and contact support if the error still exists.', $httpStatus);
     }
 
-    public static function networkError(\Exception $previous)
+    public static function networkError(\Throwable $previous)
     {
         return new self('Mailgun\'s servers are currently unreachable.', 0, $previous);
     }

src/HttpClient/HttpClientConfigurator.php

@@ -11,14 +11,14 @@ declare(strict_types=1);
 
 namespace Mailgun\HttpClient;
 
-use Http\Client\HttpClient;
 use Http\Client\Common\PluginClient;
-use Http\Discovery\HttpClientDiscovery;
+use Http\Discovery\Psr18ClientDiscovery;
 use Http\Discovery\UriFactoryDiscovery;
 use Http\Message\UriFactory;
 use Http\Client\Common\Plugin;
 use Mailgun\HttpClient\Plugin\History;
 use Mailgun\HttpClient\Plugin\ReplaceUriPlugin;
+use Psr\Http\Client\ClientInterface;
 
 /**
  * Configure a HTTP client.
@@ -50,7 +50,7 @@ final class HttpClientConfigurator
     private $uriFactory;
 
     /**
-     * @var HttpClient
+     * @var ClientInterface
      */
     private $httpClient;
 
@@ -124,16 +124,16 @@ final class HttpClientConfigurator
         return $this;
     }
 
-    private function getHttpClient(): HttpClient
+    private function getHttpClient(): ClientInterface
     {
         if (null === $this->httpClient) {
-            $this->httpClient = HttpClientDiscovery::find();
+            $this->httpClient = Psr18ClientDiscovery::find();
         }
 
         return $this->httpClient;
     }
 
-    public function setHttpClient(HttpClient $httpClient): self
+    public function setHttpClient(ClientInterface $httpClient): self
     {
         $this->httpClient = $httpClient;
 

src/HttpClient/Plugin/History.php

@@ -12,7 +12,6 @@ declare(strict_types=1);
 namespace Mailgun\HttpClient\Plugin;
 
 use Http\Client\Common\Plugin\Journal;
-use Http\Client\Exception;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 
@@ -23,6 +22,7 @@ use Psr\Http\Message\ResponseInterface;
  */
 final class History implements Journal
 {
+    use HistoryTrait;
     /**
      * @var ResponseInterface
      */
@@ -40,8 +40,4 @@ final class History implements Journal
     {
         $this->lastResponse = $response;
     }
-
-    public function addFailure(RequestInterface $request, Exception $exception)
-    {
-    }
 }

src/HttpClient/Plugin/HistoryTrait.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Copyright (C) 2013 Mailgun
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license. See the LICENSE file for details.
+ */
+
+namespace Mailgun\HttpClient\Plugin;
+
+use Http\Client\Exception;
+use Psr\Http\Client\ClientExceptionInterface;
+use Psr\Http\Message\RequestInterface;
+
+/*
+ * Below is a some code to make the History plugin compatible with both 1.x and 2.x of php-client/client-common
+ */
+if (\class_exists(\Http\Client\Common\HttpMethodsClientInterface::class)) {
+    /**
+     * @internal code for php-http/client-common:2.x
+     */
+    trait HistoryTrait
+    {
+        public function addFailure(RequestInterface $request, ClientExceptionInterface $exception)
+        {
+        }
+    }
+} else {
+    /**
+     * @internal code for php-http/client-common:1.x
+     */
+    trait HistoryTrait
+    {
+        public function addFailure(RequestInterface $request, Exception $exception)
+        {
+        }
+    }
+}

src/HttpClient/Plugin/ReplaceUriPlugin.php

@@ -22,6 +22,8 @@ use Psr\Http\Message\UriInterface;
  */
 final class ReplaceUriPlugin implements Plugin
 {
+    use Plugin\VersionBridgePlugin;
+
     /**
      * @var UriInterface
      */
@@ -32,10 +34,7 @@ final class ReplaceUriPlugin implements Plugin
         $this->uri = $uri;
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function handleRequest(RequestInterface $request, callable $next, callable $first)
+    public function doHandleRequest(RequestInterface $request, callable $next, callable $first)
     {
         $request = $request->withUri($this->uri);
 

src/HttpClient/RequestBuilder.php

@@ -11,10 +11,12 @@ declare(strict_types=1);
 
 namespace Mailgun\HttpClient;
 
-use Http\Discovery\MessageFactoryDiscovery;
+use Http\Discovery\Psr17FactoryDiscovery;
 use Http\Message\MultipartStream\MultipartStreamBuilder;
-use Http\Message\RequestFactory;
+use Psr\Http\Message\RequestFactoryInterface;
 use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * @author Tobias Nyholm <tobias.nyholm@gmail.com>
@@ -22,10 +24,15 @@ use Psr\Http\Message\RequestInterface;
 class RequestBuilder
 {
     /**
-     * @var RequestFactory
+     * @var RequestFactoryInterface|null
      */
     private $requestFactory;
 
+    /**
+     * @var StreamFactoryInterface|null
+     */
+    private $streamFactory;
+
     /**
      * @var MultipartStreamBuilder
      */
@@ -42,13 +49,13 @@ class RequestBuilder
      *                                'filename'=> string (optional)
      *                                'headers' => array (optinal) ['header-name' => 'header-value']
      *                                )
-     *
-     * @return RequestInterface
      */
-    public function create(string $method, string $uri, array $headers = [], $body = null)
+    public function create(string $method, string $uri, array $headers = [], $body = null): RequestInterface
     {
         if (!is_array($body)) {
-            return $this->getRequestFactory()->createRequest($method, $uri, $headers, $body);
+            $stream = $this->getStreamFactory()->createStream($body);
+
+            return $this->createRequest($method, $uri, $headers, $stream);
         }
 
         $builder = $this->getMultipartStreamBuilder();
@@ -67,37 +74,42 @@ class RequestBuilder
 
         $headers['Content-Type'] = 'multipart/form-data; boundary="'.$boundary.'"';
 
-        return $this->getRequestFactory()->createRequest($method, $uri, $headers, $multipartStream);
+        return $this->createRequest($method, $uri, $headers, $multipartStream);
     }
 
-    /**
-     * @return RequestFactory
-     */
-    private function getRequestFactory()
+    private function getRequestFactory(): RequestFactoryInterface
     {
         if (null === $this->requestFactory) {
-            $this->requestFactory = MessageFactoryDiscovery::find();
+            $this->requestFactory = Psr17FactoryDiscovery::findRequestFactory();
         }
 
         return $this->requestFactory;
     }
 
-    /**
-     * @param RequestFactory $requestFactory
-     *
-     * @return RequestBuilder
-     */
-    public function setRequestFactory($requestFactory)
+    public function setRequestFactory(RequestFactoryInterface $requestFactory): self
     {
         $this->requestFactory = $requestFactory;
 
         return $this;
     }
 
-    /**
-     * @return MultipartStreamBuilder
-     */
-    private function getMultipartStreamBuilder()
+    private function getStreamFactory(): StreamFactoryInterface
+    {
+        if (null === $this->streamFactory) {
+            $this->streamFactory = Psr17FactoryDiscovery::findStreamFactory();
+        }
+
+        return $this->streamFactory;
+    }
+
+    public function setStreamFactory(StreamFactoryInterface $streamFactory): self
+    {
+        $this->streamFactory = $streamFactory;
+
+        return $this;
+    }
+
+    private function getMultipartStreamBuilder(): MultipartStreamBuilder
     {
         if (null === $this->multipartStreamBuilder) {
             $this->multipartStreamBuilder = new MultipartStreamBuilder();
@@ -106,15 +118,21 @@ class RequestBuilder
         return $this->multipartStreamBuilder;
     }
 
-    /**
-     * @param MultipartStreamBuilder $multipartStreamBuilder
-     *
-     * @return RequestBuilder
-     */
-    public function setMultipartStreamBuilder($multipartStreamBuilder)
+    public function setMultipartStreamBuilder(MultipartStreamBuilder $multipartStreamBuilder): self
     {
         $this->multipartStreamBuilder = $multipartStreamBuilder;
 
         return $this;
     }
+
+    private function createRequest(string $method, string $uri, array $headers, StreamInterface $stream)
+    {
+        $request = $this->getRequestFactory()->createRequest($method, $uri);
+        $request = $request->withBody($stream);
+        foreach ($headers as $name => $value) {
+            $request = $request->withAddedHeader($name, $value);
+        }
+
+        return $request;
+    }
 }

src/Mailgun.php

@@ -11,13 +11,14 @@ declare(strict_types=1);
 
 namespace Mailgun;
 
-use Http\Client\HttpClient;
+use Http\Client\Common\PluginClient;
 use Mailgun\HttpClient\HttpClientConfigurator;
 use Mailgun\HttpClient\Plugin\History;
 use Mailgun\HttpClient\RequestBuilder;
 use Mailgun\Hydrator\ModelHydrator;
 use Mailgun\Hydrator\Hydrator;
 use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Client\ClientInterface;
 
 /**
  * This class is the base class for the Mailgun SDK.
@@ -30,7 +31,7 @@ final class Mailgun
     private $apiKey;
 
     /**
-     * @var HttpClient
+     * @var ClientInterface|PluginClient
      */
     private $httpClient;
 

tests/Api/TestCase.php

@@ -14,6 +14,7 @@ namespace Mailgun\Tests\Api;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\Psr7\Response;
 use Mailgun\Hydrator\ModelHydrator;
+use Psr\Http\Client\ClientInterface;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -49,7 +50,7 @@ abstract class TestCase extends \PHPUnit\Framework\TestCase
     protected function getApiMock($httpClient = null, $requestClient = null, $hydrator = null)
     {
         if (null === $httpClient) {
-            $httpClient = $this->getMockBuilder('Http\Client\HttpClient')
+            $httpClient = $this->getMockBuilder(ClientInterface::class)
                 ->setMethods(['sendRequest'])
                 ->getMock();
             $httpClient
@@ -79,7 +80,7 @@ abstract class TestCase extends \PHPUnit\Framework\TestCase
      */
     protected function getApiInstance($apiKey = null)
     {
-        $httpClient = $this->getMockBuilder('Http\Client\HttpClient')
+        $httpClient = $this->getMockBuilder(ClientInterface::class)
             ->setMethods(['sendRequest'])
             ->getMock();
         $httpClient

tests/HttpClient/RequestBuilderTest.php

@@ -12,19 +12,25 @@ declare(strict_types=1);
 namespace Mailgun\Tests\HttpClient;
 
 use Http\Message\MultipartStream\MultipartStreamBuilder;
-use Http\Message\RequestFactory;
 use Mailgun\HttpClient\RequestBuilder;
 use Mailgun\Tests\MailgunTestCase;
+use Nyholm\Psr7\Stream;
 use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Http\Message\RequestFactoryInterface;
 use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\StreamFactoryInterface;
 use Psr\Http\Message\StreamInterface;
 
 class RequestBuilderTest extends MailgunTestCase
 {
     /**
-     * @var MockObject|RequestFactory
+     * @var MockObject|RequestFactoryInterface
      */
     private $requestFactory;
+    /**
+     * @var MockObject|StreamFactoryInterface
+     */
+    private $streamFactory;
 
     /**
      * @var RequestBuilder
@@ -38,13 +44,18 @@ class RequestBuilderTest extends MailgunTestCase
     {
         parent::setUp();
 
-        $this->requestFactory = $this->getMockBuilder(RequestFactory::class)
+        $this->requestFactory = $this->getMockBuilder(RequestFactoryInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->streamFactory = $this->getMockBuilder(StreamFactoryInterface::class)
             ->disableOriginalConstructor()
             ->getMock();
 
         $this->requestBuilder = new RequestBuilder();
         //Everything but testing class is mock. Otherwise it wouldn't be unit testing
         $this->requestBuilder->setRequestFactory($this->requestFactory);
+        $this->requestBuilder->setStreamFactory($this->streamFactory);
     }
 
     /**
@@ -60,21 +71,34 @@ class RequestBuilderTest extends MailgunTestCase
 
     public function testCreateSimpleStream()
     {
+        $streamContent = 'content';
+        $stream = Stream::create($streamContent);
+
+        $this->streamFactory
+            ->expects($this->once())
+            ->method('createStream')
+            ->with($streamContent)
+            ->willReturn($stream);
+
+        $request = $this->getMockBuilder(RequestInterface::class)->getMock();
+        $request->expects($this->once())
+            ->method('withBody')
+            ->with($this->equalTo($stream))
+            ->willReturn($request);
+
+        $request->expects($this->once())
+            ->method('withAddedHeader')
+            ->with($this->equalTo('Content-Type'), $this->equalTo('application/json'))
+            ->willReturn($request);
+
         $this->requestFactory
             ->expects($this->once())
             ->method('createRequest')
             ->with(
                 $this->equalTo('GET'),
-                $this->equalTo('http://foo.bar'),
-                $this->callback(function (array $headers) {
-                    $this->assertArrayHasKey('Content-Type', $headers);
-                    $this->assertEquals('application/json', $headers['Content-Type']);
-
-                    return true;
-                }),
-                $this->equalTo('content')
+                $this->equalTo('http://foo.bar')
             )
-            ->willReturn($request = $this->getMockBuilder(RequestInterface::class)->getMock());
+            ->willReturn($request);
 
         $result = $this->requestBuilder
             ->create('GET', 'http://foo.bar', ['Content-Type' => 'application/json'], 'content');
@@ -122,21 +146,25 @@ class RequestBuilderTest extends MailgunTestCase
             ->method('reset')
             ->willReturn($multipartStreamBuilder);
 
+        $request = $this->getMockBuilder(RequestInterface::class)->getMock();
+        $request->expects($this->once())
+            ->method('withBody')
+            ->with($this->equalTo($stream))
+            ->willReturn($request);
+
+        $request->expects($this->once())
+            ->method('withAddedHeader')
+            ->with($this->equalTo('Content-Type'), $this->equalTo('multipart/form-data; boundary="some boundary"'))
+            ->willReturn($request);
+
         $this->requestFactory
             ->expects($this->once())
             ->method('createRequest')
             ->with(
                 $this->equalTo('GET'),
-                $this->equalTo('http://foo.bar'),
-                $this->callback(function (array $headers) {
-                    $this->assertArrayHasKey('Content-Type', $headers);
-                    $this->assertEquals('multipart/form-data; boundary="some boundary"', $headers['Content-Type']);
-
-                    return true;
-                }),
-                $this->equalTo($stream)
+                $this->equalTo('http://foo.bar')
             )
-            ->willReturn($request = $this->getMockBuilder(RequestInterface::class)->getMock());
+            ->willReturn($request);
 
         $this->requestBuilder->setMultipartStreamBuilder($multipartStreamBuilder);
         $result = $this->requestBuilder