Fix offline parse ip info (#112)

* Fix get info subscript

* Fix return typing

Author: wu-clan

backend/app/utils/request_parse.py

@@ -47,7 +47,7 @@ async def get_location_online(ip: str, user_agent: str) -> dict | None:
 
 
 @sync_to_async
-def get_location_offline(ip: str) -> str | None:
+def get_location_offline(ip: str) -> list[str] | None:
     """
     离线获取 ip 地址属地，无法保证准确率，100%可用
 
@@ -79,8 +79,8 @@ async def parse_ip_info(request: Request) -> tuple[str, str, str, str]:
         location_info = await get_location_offline(ip)
         if location_info:
             country = location_info[0] if location_info[0] != '0' else None
-            region = location_info[1] if location_info[1] != '0' else None
-            city = location_info[2] if location_info[2] != '0' else None
+            region = location_info[2] if location_info[2] != '0' else None
+            city = location_info[3] if location_info[3] != '0' else None
     return ip, country, region, city