🍄‍🟫默认第一个流水号从Min开始，而不是Min+1

Admin.NET/Admin.NET.Core/Service/Serial/SysSerialService.cs

@@ -80,7 +80,7 @@ public class SysSerialService : IDynamicApiController, ITransient
 
         var entity = input.Adapt<SysSerial>();
         entity.Expy = DateTime.Now;
-        entity.Seq = 1;
+        entity.Seq = entity.Min - 1;
         return await _sysSerialRep.InsertAsync(entity) ? entity.Id : default;
     }
 
@@ -99,7 +99,17 @@ public class SysSerialService : IDynamicApiController, ITransient
         if (await _sysSerialRep.IsAnyAsync(u => u.Type == input.Type && u.TenantId == _userManager.TenantId && input.Id != seq.Id)) throw Oops.Oh(ErrorCodeEnum.D1006);
 
         var entity = input.Adapt<SysSerial>();
-        await _sysSerialRep.AsUpdateable(entity).IgnoreColumns(u => new { u.Expy, u.Seq }).ExecuteCommandAsync();
+        // 原来的数据
+        var original = await _sysSerialRep.GetFirstAsync(u => u.Id == input.Id);
+        // 最小值发生变化，并且当最小值比当前流水号大时
+        var seqChange = false;
+        if (original.Min != entity.Min && entity.Min - 1 > original.Seq)
+        {       
+                // 使下个流水号为更新后的最小值
+                entity.Seq = entity.Min - 1;
+                seqChange = true;
+        }
+        await _sysSerialRep.AsUpdateable(entity).IgnoreColumns(u => new { u.Expy }).IgnoreColumnsIF(seqChange == false, u => new { u.Seq }).ExecuteCommandAsync();
     }
 
     /// <summary>
@@ -178,7 +188,7 @@ public class SysSerialService : IDynamicApiController, ITransient
         return FormatSeqNo(new()
         {
             Formater = input.Formater,
-            Seq = input.Seq,
+            Seq = input.Seq + 1,
             Max = input.Max,
         }, DateTime.Now);
     }
@@ -262,7 +272,7 @@ public class SysSerialService : IDynamicApiController, ITransient
                 if (nowDate.Date != seq.Expy.Date)
                 {
                     seq.Expy = nowDate.Date;
-                    seq.Seq = seq.Min;
+                    seq.Seq = seq.Min - 1;
                 }
                 break;
 
@@ -270,7 +280,7 @@ public class SysSerialService : IDynamicApiController, ITransient
                 if (nowDate.Month != seq.Expy.Month || nowDate.Year != seq.Expy.Year)
                 {
                     seq.Expy = nowDate.Date;
-                    seq.Seq = seq.Min;
+                    seq.Seq = seq.Min - 1;
                 }
                 break;
 
@@ -278,7 +288,7 @@ public class SysSerialService : IDynamicApiController, ITransient
                 if (nowDate.Year != seq.Expy.Year)
                 {
                     seq.Expy = nowDate.Date;
-                    seq.Seq = seq.Min;
+                    seq.Seq = seq.Min - 1;
                 }
                 break;