Refactor code structure for improved readability and maintainability

service/captcha/gcaptcha.py

@@ -0,0 +1,27 @@
+import aiohttp
+
+async def verify_captcha(token: str, secret_key: str) -> bool:
+    """
+    验证 Google reCAPTCHA v2/v3 的 token 是否有效。
+    
+    :param token: 用户提交的 reCAPTCHA token
+    :type token: str
+    :param secret_key: Google reCAPTCHA 的密钥
+    :type secret_key: str
+    
+    :return: 如果验证成功返回 True，否则返回 False
+    :rtype: bool
+    """
+    verify_url = "https://www.google.com/recaptcha/api/siteverify"
+    payload = {
+        'secret': secret_key,
+        'response': token
+    }
+    
+    async with aiohttp.ClientSession() as session:
+        async with session.post(verify_url, data=payload) as response:
+            if response.status != 200:
+                return False
+            
+            result = await response.json()
+            return result.get('success', False)