feat: add fromOAuth method

src/Auth.php

@@ -327,6 +327,37 @@ public function updatePassword(string $oldPassword, string $newPassword): bool
         return true;
     }
 
+    /**
+     * Create a new user from OAuth
+     *
+     * @param array $userData User data
+     *
+     * @return bool
+     */
+    public function fromOAuth(array $userData): bool
+    {
+        $this->checkDbConnection();
+
+        Config::setUserCache('oauth-token', $userData['token']);
+
+        $user = $this->db->select(Config::get('db.table'))->where($userData['user'])->first();
+
+        if (!$user) {
+            return $this->register($userData['user']);
+        }
+
+        $this->user = new User($user);
+        return true;
+    }
+
+    /**
+     * Get saved OAuth token
+     */
+    public function oauthToken()
+    {
+        return Config::getUserCache('oauth-token');
+    }
+
     /**
      * Sign a user out
      * ---

src/Auth/Config.php

@@ -41,6 +41,11 @@ class Config
         'messages.loginPasswordError' => 'Password is incorrect!',
     ];
 
+    /**
+     * Additional user information for cache
+     */
+    protected static array $userCache = [];
+
     /**
      * Set Leaf Auth config
      */
@@ -68,4 +73,30 @@ public static function get($key = null)
 
         return static::$config;
     }
+
+    /**
+     * Set user cache
+     */
+    public static function setUserCache($key, $value): void
+    {
+        if (isset($_SESSION)) {
+            $_SESSION[$key] = $value;
+        }
+
+        static::$userCache[$key] = $value;
+    }
+
+    /**
+     * Get user cache
+     */
+    public static function getUserCache($key = null)
+    {
+        $cache = $_SESSION ?? static::$userCache;
+
+        if ($key) {
+            return $cache[$key] ?? null;
+        }
+
+        return $cache;
+    }
 }