switch from GuzzleHttp to psr 7/17/18

Author: akuzia

README.md

@@ -32,29 +32,55 @@ composer require gnello/php-mattermost-driver:1.*
 #### Login id and password
 ```php
 use \Gnello\Mattermost\Driver;
-
-// construct your own GuzzleHttp client instance
-$guzzle = new GuzzleHttp/Client(...);
-
-$driver = new Driver($guzzle, [
-    'url' => 'your_chat_url',
-    'login_id' => 'your_login_id',
-    'password' => 'your_password',
-]);
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\StreamFactoryInterface;
+
+// construct or discover your own PSR7 instances
+/** @var ClientInterface */
+$httpClient = ...;
+/** @var RequestFactoryInterface */
+$requestFactory = ...;
+/** @var StreamFactoryInterface */
+$streamFactory = ...;
+
+$driver = new Driver(
+    $httpClient,
+    $requestFactory,
+    $streamFactory,
+    [
+        'url' => 'your_chat_url',
+        'login_id' => 'your_login_id',
+        'password' => 'your_password',
+    ]
+);
 $result = $driver->authenticate();
 ```
 
 #### Token
 ```php
- use \Gnello\Mattermost\Driver;
-
- // construct your own GuzzleHttp client instance
-$guzzle = new GuzzleHttp/Client(...);
-
-$driver = new Driver($guzzle, [
-    'url' => 'your_chat_url',
-    'token' => 'your_token',
-]);
+use \Gnello\Mattermost\Driver;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\StreamFactoryInterface;
+
+// construct or discover your own PSR7 instances
+/** @var ClientInterface */
+$httpClient = ...;
+/** @var RequestFactoryInterface */
+$requestFactory = ...;
+/** @var StreamFactoryInterface */
+$streamFactory = ...;
+
+$driver = new Driver(
+    $httpClient,
+    $requestFactory,
+    $streamFactory,
+    [
+        'url' => 'your_chat_url',
+        'token' => 'your_token',
+    ]
+);
 
 $result = $driver->authenticate();
 ```
@@ -198,4 +224,3 @@ Don't you see the endpoint you need? Feel free to open an issue or a PR!
 [10]: https://github.com/gnello/laravel-mattermost-driver
 [11]: https://poser.pugx.org/gnello/php-mattermost-driver/downloads
 [12]: https://packagist.org/packages/gnello/php-mattermost-driver
-[13]: https://docs.guzzlephp.org/en/stable/request-options.html

composer.json

@@ -17,15 +17,27 @@
     "require": {
         "php": ">=5.5.0",
         "ext-json": "*",
-        "psr/http-message" : "^1.0",
-        "guzzlehttp/guzzle": "^6.2|^7.4"
+        "nyholm/psr7": "^1.5",
+        "psr/http-client": "^1.0",
+        "psr/http-client-implementation": "^1.0",
+        "psr/http-message": "^1.0",
+        "psr/http-message-implementation": "^1.0",
+        "psr/http-factory": "^1.0",
+        "psr/http-factory-implementation": "^1.0",
+        "php-http/multipart-stream-builder": "^1.2"
     },
     "require-dev": {
-        "symfony/var-dumper": "^3.1"
+        "symfony/var-dumper": "^3.1",
+        "guzzlehttp/guzzle": "^7.5"
     },
     "autoload": {
         "psr-4": {
             "Gnello\\Mattermost\\": "src/"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "php-http/discovery": true
+        }
     }
 }