feat:

@@ -3,7 +3,6 @@
 namespace Lackoxygen\TiktokShop;
 
 use Illuminate\Support\Arr;
-use Lackoxygen\TiktokShop\Attribute\Config\Config;
 use Lackoxygen\TiktokShop\Attribute\Config\Option;
 use Lackoxygen\TiktokShop\Exception\RequestNotFoundException;
 use Lackoxygen\TiktokShop\Request\RequestProxy;
@@ -54,33 +53,49 @@ class Application
      */
     public function __construct($options = null)
     {
-        if (!$options instanceof Config) {
-            if (is_array($options)) {
-                $config = static::newConfig($options);
-                goto next;
-            }
+        $this->config = $this->loadConfig($options);
+    }
 
-            $app = $options ?: 'default';
+    /**
+     * Read configuration
+     *
+     * @param $options
+     * @return Option
+     */
+    protected function loadConfig($options): Option
+    {
+        if ($options instanceof Option) {
+            return $options;
+        }
+        if (is_array($options)) {
+            return static::newConfigFormArray($options);
+        }
+        if (is_string($options)) {
+            return $this->configure($options);
+        }
+        return $this->configure();
+    }
 
-            $config = \config(ServiceProvider::$name . '.' . $app);
+    /**
+     * Load configuration
+     *
+     * @param string $app
+     * @return Option
+     */
+    protected function configure(string $app = 'default'): Option
+    {
+        $configure = \config(ServiceProvider::$name . '.' . $app, []);
 
-            if (!is_array($config)) {
-                throw new \InvalidArgumentException('config file not found');
-            }
-            $config = static::newConfig($config);
-        } else {
-            $config = $options;
-        }
-        next:
-        $this->config = $config;
+        return static::newConfigFormArray($configure);
     }
 
     /**
-     * @param array $options
+     * Load configuration to object Option
      *
+     * @param array $options
      * @return Option
      */
-    public static function newConfig(array $options): Option
+    public static function newConfigFormArray(array $options): Option
     {
         return new Option(
             Arr::get($options, 'app_key'),
@@ -102,8 +117,9 @@ class Application
     }
 
     /**
-     * @param string $accessToken
+     * Set access token
      *
+     * @param string $accessToken
      * @return Application
      */
     public function setAccessToken(string $accessToken): Application
@@ -114,6 +130,8 @@ class Application
     }
 
     /**
+     * Match object
+     *
      * @param string $name
      * @return RequestProxy|object
      * @throws RequestNotFoundException
@@ -136,9 +154,10 @@ class Application
     }
 
     /**
+     * Call object
+     *
      * @param $name
      * @param array $arguments
-     *
      * @return RequestProxy
      * @throws RequestNotFoundException
      */