fix: fixed changes to Google.php

src/Auth/OAuth/Google.php

@@ -5,13 +5,15 @@ namespace Auth\OAuth;
 use Auth\OAuth;
 
 // Reference Material 
-// https://api.stackexchange.com/docs/authentication
-class Stackoverflow extends OAuth
+// https://developers.google.com/oauthplayground/
+// https://developers.google.com/identity/protocols/OAuth2
+// https://developers.google.com/identity/protocols/OAuth2WebServer
+class Google extends OAuth
 {
-    // /**
-    //  * @var string
-    //  */
-    // protected $version = 'v4';
+    /**
+     * @var string
+     */
+    protected $version = 'v4';
     /**
      * @var array
      */
@@ -22,7 +24,7 @@ class Stackoverflow extends OAuth
      */
     public function getName(): string
     {
-        return 'stackoverflow';
+        return 'google';
     }
 
     /**

src/Auth/OAuth/Stackoverflow.php

@@ -0,0 +1,132 @@
+<?php
+
+namespace Auth\OAuth;
+
+use Auth\OAuth;
+
+// Reference Material 
+// https://developers.google.com/oauthplayground/
+// https://developers.google.com/identity/protocols/OAuth2
+// https://developers.google.com/identity/protocols/OAuth2WebServer
+class Google extends OAuth
+{
+    /**
+     * @var string
+     */
+    protected $version = 'v4';
+    /**
+     * @var array
+     */
+    protected $user = [];
+
+    /**
+     * @return string
+     */
+    public function getName(): string
+    {
+        return 'google';
+    }
+
+    /**
+     * @return string
+     */
+    public function getLoginURL(): string
+    {
+        return 'https://accounts.google.com/o/oauth2/v2/auth?'.
+            'client_id='.urlencode($this->appID).
+            '&redirect_uri='.urlencode($this->callback).
+            '&scope=https://www.googleapis.com/auth/userinfo.email+https://www.googleapis.com/auth/userinfo.profile'.
+            '&state='.urlencode(json_encode($this->state)).
+            '&response_type=code';
+    }
+
+    /**
+     * @param string $code
+     *
+     * @return string
+     */
+    public function getAccessToken(string $code): string
+    {
+        $accessToken = $this->request(
+            'POST',
+            'https://www.googleapis.com/oauth2/'.$this->version.'/token?'.
+                'code='.urlencode($code).
+                '&client_id='.urlencode($this->appID).
+                '&client_secret='.urlencode($this->appSecret).
+                '&redirect_uri='.urlencode($this->callback).
+                '&scope='.
+                '&grant_type=authorization_code'
+        );
+
+        $accessToken = json_decode($accessToken, true);
+
+        if (isset($accessToken['access_token'])) {
+            return $accessToken['access_token'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param string $accessToken
+     *
+     * @return string
+     */
+    public function getUserID(string $accessToken): string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['id'])) {
+            return $user['id'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param string $accessToken
+     *
+     * @return string
+     */
+    public function getUserEmail(string $accessToken): string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['email'])) {
+            return $user['email'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param string $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 $accessToken): array
+    {
+        if (empty($this->user)) {
+            $user = $this->request('GET', 'https://www.googleapis.com/oauth2/v2/userinfo?access_token='.urlencode($accessToken));
+            $this->user = json_decode($user, true);
+        }
+
+        return $this->user;
+    }
+}