删除未使用的RandomSoftDelete方法并修复limit条件逻辑

mongo/mongo.go

@@ -197,7 +197,6 @@ func (m *MongoDB) Find(ctx context.Context, filter bson.M, result interface{}, c
 	opt := options.Find().SetSkip(skip)
 	if limit != -1 {
 		opt.SetLimit(limit)
-	} else {
 		total, err = m.Count(ctx, filter, collection)
 		if err != nil || total == 0 {
 			return
@@ -521,53 +520,6 @@ func (m *MongoDB) Update(ctx context.Context, filter bson.M, update bson.M, coll
 	return
 }
 
-// RandomSoftDelete 随机软删除个文档的 _id
-func (m *MongoDB) RandomSoftDelete(ctx context.Context, limit int, collection string, opts ...options.Lister[options.UpdateManyOptions]) (result *mongo.UpdateResult, err error) {
-	source, err := m.getDataSource()
-	if err != nil {
-		return nil, err
-	}
-	db := source.Database()
-
-	_ = opts
-	pipeline := mongo.Pipeline{
-		bson.D{{Key: "$addFields", Value: bson.D{{Key: "random", Value: bson.M{"$rand": bson.M{}}}}}},
-		bson.D{{Key: "$match", Value: bson.D{{Key: "isDeleted", Value: false}}}},
-		bson.D{{Key: "$sort", Value: bson.D{{Key: "random", Value: -1}}}},
-		bson.D{{Key: "$limit", Value: limit}},
-		bson.D{{Key: "$project", Value: bson.D{{Key: "_id", Value: 1}}}},
-	}
-	cursor, err := db.Collection(collection).Aggregate(ctx, pipeline)
-	if err != nil {
-		return
-	}
-	defer cursor.Close(ctx)
-
-	var idsToUpdate []bson.ObjectID
-	for cursor.Next(ctx) {
-		var result bson.M
-		if err := cursor.Decode(&result); err != nil {
-			return nil, err
-		}
-		id := result["_id"].(bson.ObjectID)
-		idsToUpdate = append(idsToUpdate, id)
-	}
-	if err := cursor.Err(); err != nil {
-		return nil, err
-	}
-	fmt.Printf("准备更新的随机文档ID: %v\n", idsToUpdate)
-
-	if len(idsToUpdate) > 0 {
-		filter := bson.D{{Key: "_id", Value: bson.D{{Key: "$in", Value: idsToUpdate}}}}
-		update := bson.D{{Key: "$set", Value: bson.D{{Key: "isDeleted", Value: true}}}}
-		_, err = db.Collection(collection).UpdateMany(ctx, filter, update)
-		if err != nil {
-			return
-		}
-	}
-	return
-}
-
 // SaveOrUpdate 批量增加或修改
 func (m *MongoDB) SaveOrUpdate(ctx context.Context, filter []bson.M, update []bson.M, collection string, opts ...options.Lister[options.UpdateManyOptions]) (result *mongo.BulkWriteResult, err error) {
 	source, err := m.getDataSource()