authorization

Author: pwysokin

lib/Authorization.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace DocPlanner\Client;
+
+use Exception;
+use GuzzleHttp\Client;
+use GuzzleHttp\ClientInterface;
+use GuzzleHttp\Psr7\MultipartStream;
+use GuzzleHttp\Psr7\Request;
+
+class Authorization
+{
+    /**
+     * @var string
+     */
+    private $authUrl;
+
+    /**
+     * @var ClientInterface
+     */
+    private $client;
+
+    public function __construct($authUrl, ClientInterface $client = null)
+    {
+        $this->authUrl = $authUrl;
+        $this->client = $client ?: new Client();
+    }
+
+    /**
+     * @param string $clientId
+     * @param string $clientSecret
+     *
+     * @return string
+     * @throws ApiException
+     */
+    public function getAccessToken($clientId, $clientSecret)
+    {
+        $authForm = [
+            'grant_type' => 'client_credentials',
+            'scope' => 'integration',
+            'client_id' => $clientId,
+            'client_secret' => $clientSecret
+        ];
+
+        foreach ($authForm as $formParamName => $formParamValue) {
+            $multipartContents[] = [
+                'name' => $formParamName,
+                'contents' => $formParamValue
+            ];
+        }
+        $authBody = new MultipartStream($multipartContents);
+
+        $authRequest = new Request(
+            'POST',
+            $this->authUrl,
+            [],
+            $authBody
+        );
+
+        try {
+            $authResponse = $this->client->send($authRequest);
+        } catch (Exception $e) {
+            throw new ApiException($e->getMessage(), $e->getCode());
+        }
+        $content = json_decode($authResponse->getBody()->getContents(), true);
+
+        return $content['access_token'];
+    }
+}