对接

internal/biz/livechat/chat.go

@@ -53,6 +53,7 @@ type Repo interface {
 	ListRecent(context.Context, uint, int) ([]*Message, error)
 	CreateChat(context.Context, uint, uint, string) (*Message, error)
 	CreateGift(context.Context, *GiftSnapshot) (*Message, error)
+	Clear(context.Context, uint) error
 }
 
 type Usecase struct{ repo Repo }
@@ -83,3 +84,10 @@ func (uc *Usecase) RecordGift(ctx context.Context, gift *GiftSnapshot) (*Message
 	}
 	return uc.repo.CreateGift(ctx, gift)
 }
+
+func (uc *Usecase) Clear(ctx context.Context, roomID uint) error {
+	if roomID == 0 {
+		return ErrRoomNotFound
+	}
+	return uc.repo.Clear(ctx, roomID)
+}