feat: implement batch move and delete functionality for documents and FAQs

internal/services/knowledge_faq_service.go

@@ -122,6 +122,69 @@ func (s *knowledgeFAQService) DeleteKnowledgeFAQ(id int64) error {
 	return rag.Index.RemoveFAQIndex(context.Background(), id)
 }
 
+func (s *knowledgeFAQService) BatchMoveKnowledgeFAQs(req request.BatchMoveKnowledgeFAQRequest, operator *dto.AuthPrincipal) error {
+	if operator == nil {
+		return errorsx.Unauthorized("未登录或登录已过期")
+	}
+	ids := uniquePositiveIDs(req.IDs)
+	if len(ids) == 0 {
+		return errorsx.InvalidParam("请选择要移动的FAQ")
+	}
+	if _, err := s.requireFAQKnowledgeBase(req.KnowledgeBaseID); err != nil {
+		return err
+	}
+	if _, err := KnowledgeDirectoryService.RequireUsableDirectory(req.KnowledgeBaseID, req.DirectoryID); err != nil {
+		return err
+	}
+	for _, id := range ids {
+		current := s.Get(id)
+		if current == nil {
+			return errorsx.InvalidParam("FAQ不存在")
+		}
+		if current.KnowledgeBaseID != req.KnowledgeBaseID {
+			return errorsx.InvalidParam("只能移动当前知识库下的FAQ")
+		}
+	}
+	now := time.Now()
+	if err := sqls.WithTransaction(func(ctx *sqls.TxContext) error {
+		for _, id := range ids {
+			if err := repositories.KnowledgeFAQRepository.Updates(ctx.Tx, id, map[string]any{
+				"directory_id":     req.DirectoryID,
+				"index_status":     enums.KnowledgeDocumentIndexStatusPending,
+				"indexed_at":       nil,
+				"index_error":      "",
+				"update_user_id":   operator.UserID,
+				"update_user_name": operator.Username,
+				"updated_at":       now,
+			}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+	for _, id := range ids {
+		if err := rag.Index.IndexFAQByID(context.Background(), id); err != nil {
+			slog.Error("failed to reindex moved knowledge faq", "faq_id", id, "error", err)
+		}
+	}
+	return nil
+}
+
+func (s *knowledgeFAQService) BatchDeleteKnowledgeFAQs(req request.BatchDeleteKnowledgeFAQRequest) error {
+	ids := uniquePositiveIDs(req.IDs)
+	if len(ids) == 0 {
+		return errorsx.InvalidParam("请选择要删除的FAQ")
+	}
+	for _, id := range ids {
+		if err := s.DeleteKnowledgeFAQ(id); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (s *knowledgeFAQService) buildKnowledgeFAQModel(req request.CreateKnowledgeFAQRequest) (*models.KnowledgeFAQ, error) {
 	if req.KnowledgeBaseID <= 0 {
 		return nil, errorsx.InvalidParam("知识库不存在")