Added Bitly OAuth provider

src/Auth/OAuth/Bitly.php

@@ -0,0 +1,151 @@
+<?php
+
+namespace Auth\OAuth;
+
+use Auth\OAuth;
+
+// Reference Material
+// https://dev.bitly.com/v4_documentation.html
+//
+class Bitly extends OAuth
+{
+
+    /**
+     * @var string
+     */
+    private $endpoint = 'https://bitly.com/oauth/';
+
+    /**
+     * @var string
+     */
+    private $resourceEndpoint = 'https://api-ssl.bitly.com/';
+
+    /**
+     * @var array
+     */
+    protected $scopes = [];
+
+    /**
+     * @var array
+     */
+    protected $user = [];
+
+    /**
+     * @return string
+     */
+    public function getName():string
+    {
+        return 'bitly';
+    }
+
+    /**
+     * @return string
+     */
+    public function getLoginURL():string
+    {
+        return $this->endpoint . 'authorize?'.
+            http_build_query([
+                'client_id' => $this->appID,
+                'redirect_uri' => $this->callback,
+                'state' => json_encode($this->state)
+            ]);
+    }
+
+    /**
+     * @param string $code
+     *
+     * @return string
+     */
+    public function getAccessToken(string $code):string
+    {
+        $response = $this->request(
+            'POST',
+            $this->resourceEndpoint . 'oauth/access_token',
+            ["Content-Type: application/x-www-form-urlencoded"],
+            http_build_query([
+                "client_id" => $this->appID,
+                "client_secret" => $this->appSecret,
+                "code" => $code,
+                "redirect_uri" => $this->callback,
+                "state" => json_encode($this->state)
+            ])
+        );
+
+        $result = null;
+
+        if ($response) {
+            parse_str($response, $result);
+            return $result['access_token'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserID(string $accessToken):string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['login'])) {
+            return $user['login'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserEmail(string $accessToken):string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['emails'])) {
+            return $user['emails'][0]['email'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserName(string $accessToken):string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['name'])) {
+            return $user['name'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param string $accessToken
+     *
+     * @return array
+     */
+    protected function getUser(string $accessToken)
+    {
+        $headers = [
+            'Authorization: Bearer '. urlencode($accessToken),
+            "Accept: application/json"
+        ];
+
+        if (empty($this->user)) {
+            $this->user = json_decode($this->request('GET', $this->resourceEndpoint . "v4/user", $headers), true);
+        }
+
+
+        return $this->user;
+    }
+}