From 4abe10eecfac153380be370afd676325cbe0da54 Mon Sep 17 00:00:00 2001
From: ALEXTANG <574809918@qq.com>
Date: Sun, 16 Jul 2023 19:06:45 +0800
Subject: [PATCH] IDataBase Last

IDataBase Last
---
 .../DotNet/Core/DataBase/Base/IDateBase.cs           |  1 +
 .../DotNet/Core/DataBase/MongoDataBase.cs            | 12 ++++++++++++
 .../UserHandler/H_C2G_RegisterRequestHandler.cs      |  2 +-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Assets/GameScripts/DotNet/Core/DataBase/Base/IDateBase.cs b/Assets/GameScripts/DotNet/Core/DataBase/Base/IDateBase.cs
index 986ca79e..d56099ac 100644
--- a/Assets/GameScripts/DotNet/Core/DataBase/Base/IDateBase.cs
+++ b/Assets/GameScripts/DotNet/Core/DataBase/Base/IDateBase.cs
@@ -19,6 +19,7 @@ public interface IDateBase
     FTask<List<T>> QueryByPageOrderBy<T>(Expression<Func<T, bool>> filter, int pageIndex, int pageSize, Expression<Func<T, object>> orderByExpression, bool isAsc = true, string collection = null) where T : Entity;
     FTask<T> First<T>(Expression<Func<T, bool>> filter, string collection = null) where T : Entity;
     FTask<T> First<T>(string json, string[] cols, string collection = null) where T : Entity;
+    FTask<T> Last<T>(Expression<Func<T, bool>> filter, string collection = null) where T : Entity;
     FTask<List<T>> QueryOrderBy<T>(Expression<Func<T, bool>> filter, Expression<Func<T, object>> orderByExpression, bool isAsc = true, string collection = null) where T : Entity;
     FTask<List<T>> Query<T>(Expression<Func<T, bool>> filter, string collection = null) where T : Entity;
     FTask Query(long id, List<string> collectionNames, List<Entity> result);
diff --git a/Assets/GameScripts/DotNet/Core/DataBase/MongoDataBase.cs b/Assets/GameScripts/DotNet/Core/DataBase/MongoDataBase.cs
index 5ddab076..b63f1a32 100644
--- a/Assets/GameScripts/DotNet/Core/DataBase/MongoDataBase.cs
+++ b/Assets/GameScripts/DotNet/Core/DataBase/MongoDataBase.cs
@@ -190,6 +190,18 @@ public sealed class MongoDataBase : IDateBase
             return await cursor.FirstOrDefaultAsync();
         }
     }
+    
+    public async FTask<T> Last<T>(Expression<Func<T, bool>> filter, string collection = null) where T : Entity
+    {
+        using (await _mongoDataBaseLock.Lock(RandomHelper.RandInt64()))
+        {
+            var cursor = await GetCollection<T>(collection).FindAsync(filter);
+
+            var list = await cursor.ToListAsync();
+
+            return list.LastOrDefault();
+        }
+    }
 
     public async FTask<List<T>> QueryOrderBy<T>(Expression<Func<T, bool>> filter, Expression<Func<T, object>> orderByExpression, bool isAsc = true, string collection = null) where T : Entity
     {
diff --git a/DotNet/Logic/src/Handler/UserHandler/H_C2G_RegisterRequestHandler.cs b/DotNet/Logic/src/Handler/UserHandler/H_C2G_RegisterRequestHandler.cs
index c8748487..e572c285 100644
--- a/DotNet/Logic/src/Handler/UserHandler/H_C2G_RegisterRequestHandler.cs
+++ b/DotNet/Logic/src/Handler/UserHandler/H_C2G_RegisterRequestHandler.cs
@@ -39,7 +39,7 @@ namespace TEngine.Logic
 
         public async FTask<uint> GeneratorUID(IDateBase db)
         {
-            var ret = await db.First<AccountInfo>(t=>t.UID != 0);
+            var ret = await db.Last<AccountInfo>(t=>t.UID != 0);
             if (ret == null)
             {
                 return 100000;