Merge pull request 'fix: GetDetailTimeline 时区缺失时优先用 TrackTime，避免时间轴显示同一 CreateTime' (#6) from test into master

Reviewed-on: #6

src/TrackCenter.Application/Services/TrackOrders/TrackOrderService.cs

@@ -222,16 +222,17 @@ public class TrackOrderService : ApplicationServiceBase
 
         foreach (var item in trackDetails)
         {
-            //时间和时区任意一个为空则使用创建时间做为排序参照值
-            var timeTick = ToUnixTimestamp(Math.Abs(item.TrackTimeZone - GlobalConst.NoneTrackTimeZone) < 1
-                ? item.CreateTime
-                : item.TrackTime);
+            // 时区缺失(99999)时仍优先用真实发生时间 TrackTime；仅当 TrackTime 无效才回退 CreateTime。
+            // 旧逻辑在时区缺失时一律用 CreateTime，同批写入会导致时间轴全部显示成同一时刻。
+            var invalidTrackTime = item.TrackTime <= GlobalConst.MinDateTime;
+            var timeSource = invalidTrackTime ? item.CreateTime : item.TrackTime;
+            var timeTick = ToUnixTimestamp(timeSource);
             res.Add(new GetDetailTimelineOutput()
             {
                 IsHighlight = false,
                 IsShowHover = true,
                 Remark = item.Remarks == null || item.Remarks == "--" ? "" : item.Remarks,
-                TrackTimeZone = $"GMT{(item.TrackTimeZone >= 0 ? "+" : "-")}{GetTimeZoneStr(item.TrackTimeZone)}",
+                TrackTimeZone = DateTimeHelper.ConvertFloatToTimeZone(item.TrackTimeZone),
                 TrackTime = timeTick,
                 TrackPlace = item.TrackPlace,
                 EnContent = item.TrackEnContent,
@@ -269,19 +270,6 @@ public class TrackOrderService : ApplicationServiceBase
         return (long) (time - sTime).TotalMilliseconds;
     }
 
-    private static string GetTimeZoneStr(float timeZone)
-    {
-        var time = timeZone.ToString().Split('.');
-        if (time.Length > 1 && time[1] != "0") //如果时区有小数点
-        {
-            return time[0] + ":30";
-        }
-        else
-        {
-            return time[0] + ":00";
-        }
-    }
-
     /// <summary>
     /// 根据轨迹id删除单条轨迹
     /// </summary>