From a672e10faad434899d81ef9d0d0d5adbbc7841da Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Fri, 30 Apr 2021 16:52:55 +0800
Subject: refactor: ...

---
 .../Services/User/BasicUserServiceExtensions.cs         | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 BackEnd/Timeline/Services/User/BasicUserServiceExtensions.cs

(limited to 'BackEnd/Timeline/Services/User/BasicUserServiceExtensions.cs')

diff --git a/BackEnd/Timeline/Services/User/BasicUserServiceExtensions.cs b/BackEnd/Timeline/Services/User/BasicUserServiceExtensions.cs
new file mode 100644
index 00000000..8a05f452
--- /dev/null
+++ b/BackEnd/Timeline/Services/User/BasicUserServiceExtensions.cs
@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Timeline.Services.User
+{
+    public static class BasicUserServiceExtensions
+    {
+        public static async Task ThrowIfUserNotExist(this IBasicUserService service, long userId)
+        {
+            if (!await service.CheckUserExistenceAsync(userId))
+            {
+                throw new EntityNotExistException(EntityTypes.User,
+                    new Dictionary<string, object> { ["id"] = userId });
+            }
+        }
+    }
+}
-- 
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