广告素材增加排序字段

advitise_info 增加 sort 字段,列表默认按 sort 从小到大排序。
info/list 增加 orderBy 参数: sortAsc(默认) / sortDesc / newest,
三种排序末尾都追加 _id 作为最后一级,避免同值文档在分页时重复或漏数据。

启动时回填历史数据缺失的 sort 字段: 缺字段的文档在升序里会排在 0 之前,
且按 sort=0 精确查询查不到。用 UpdateMMany 避免刷新全表 updatedAt。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

service/advitiseV2Ser/info.go

@@ -31,7 +31,7 @@ func InfoList(ctx context.Context, req *proto.AdvitiseInfoListReq) (*proto.Advit
 		return nil, err
 	}
 	opt := &options.FindOptions{}
-	opt.SetSort(bson.D{{Key: advitiseInfoMod.FN.AdvitiseInfo.CreatedAt, Value: -1}})
+	opt.SetSort(infoListOrder(req.OrderBy))
 	opt.SetSkip((req.PageNum - 1) * req.PageSize)
 	opt.SetLimit(req.PageSize)
 	list, err := advitiseInfoMod.FindManyAdvitiseInfos(ctx, filter, opt)
@@ -43,6 +43,39 @@ func InfoList(ctx context.Context, req *proto.AdvitiseInfoListReq) (*proto.Advit
 	return resp, nil
 }
 
+// 列表排序方式
+const (
+	OrderBySortAsc  = "sortAsc"  // 排序值从小到大(默认)
+	OrderBySortDesc = "sortDesc" // 排序值从大到小
+	OrderByNewest   = "newest"   // 按创建时间,最新在前
+)
+
+// infoListOrder 把排序方式翻成 mongo 的 sort 文档。
+// 末尾一律追加 _id 作为最后一级,sort/createdAt 相同的文档顺序才是确定的,
+// 否则 skip/limit 翻页会出现重复或漏数据。
+func infoListOrder(orderBy string) bson.D {
+	fn := advitiseInfoMod.FN.AdvitiseInfo
+	switch orderBy {
+	case OrderBySortDesc:
+		return bson.D{
+			{Key: fn.Sort, Value: -1},
+			{Key: fn.CreatedAt, Value: -1},
+			{Key: fn.Id, Value: -1},
+		}
+	case OrderByNewest:
+		return bson.D{
+			{Key: fn.CreatedAt, Value: -1},
+			{Key: fn.Id, Value: -1},
+		}
+	default: // OrderBySortAsc 及未传值
+		return bson.D{
+			{Key: fn.Sort, Value: 1},
+			{Key: fn.CreatedAt, Value: -1},
+			{Key: fn.Id, Value: -1},
+		}
+	}
+}
+
 func InfoAdd(ctx context.Context, req *proto.AddAdvitiseInfoReq) error {
 	now := time.Now()
 	doc := &advitiseInfoMod.AdvitiseInfo{
@@ -60,6 +93,7 @@ func InfoAdd(ctx context.Context, req *proto.AddAdvitiseInfoReq) error {
 		RandomNames:      emptyIfNil(req.RandomNames),
 		Link:             req.Link,
 		Status:           req.Status,
+		Sort:             req.Sort,
 		StartTime:        req.StartTime,
 		EndTime:          req.EndTime,
 		Remark:           req.Remark,
@@ -113,6 +147,9 @@ func InfoUpdate(ctx context.Context, req *proto.UpdateAdvitiseInfoReq) error {
 	if req.Status != nil {
 		set[advitiseInfoMod.FN.AdvitiseInfo.Status] = *req.Status
 	}
+	if req.Sort != nil {
+		set[advitiseInfoMod.FN.AdvitiseInfo.Sort] = *req.Sort
+	}
 	if req.StartTime != nil {
 		set[advitiseInfoMod.FN.AdvitiseInfo.StartTime] = *req.StartTime
 	}