feat(model): Improve error message when model is not configured.

backend/application/app/app.go

@@ -54,6 +54,7 @@ import (
 	searchEntity "github.com/coze-dev/coze-studio/backend/domain/search/entity"
 	search "github.com/coze-dev/coze-studio/backend/domain/search/service"
 	user "github.com/coze-dev/coze-studio/backend/domain/user/service"
+	"github.com/coze-dev/coze-studio/backend/infra/contract/modelmgr"
 	"github.com/coze-dev/coze-studio/backend/infra/contract/storage"
 	"github.com/coze-dev/coze-studio/backend/pkg/errorx"
 	"github.com/coze-dev/coze-studio/backend/pkg/lang/conv"
@@ -72,6 +73,7 @@ type APPApplicationService struct {
 
 	oss             storage.Storage
 	projectEventBus search.ProjectEventBus
+	modelMgr        modelmgr.Manager
 
 	userSVC user.User
 
@@ -85,6 +87,15 @@ func (a *APPApplicationService) DraftProjectCreate(ctx context.Context, req *pro
 		return nil, errorx.New(errno.ErrAppPermissionCode, errorx.KV(errno.APPMsgKey, "session is required"))
 	}
 
+	respModel, err := a.modelMgr.ListInUseModel(ctx, 1, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(respModel.ModelList) == 0 {
+		return nil, errorx.New(errno.ErrAppNoModelInUseCode)
+	}
+
 	appID, err := a.DomainSVC.CreateDraftAPP(ctx, &service.CreateDraftAPPRequest{
 		SpaceID: req.SpaceID,
 		OwnerID: *userID,
@@ -692,8 +703,8 @@ func (a *APPApplicationService) initTask(ctx context.Context, req *resourceAPI.R
 }
 
 func (a *APPApplicationService) handleCopyResult(ctx context.Context, taskID string, newResID int64,
-	req *resourceAPI.ResourceCopyDispatchRequest, copyErr error) (failedReason string, err error) {
-
+	req *resourceAPI.ResourceCopyDispatchRequest, copyErr error,
+) (failedReason string, err error) {
 	resType, err := toResourceType(req.ResType)
 	if err != nil {
 		return "", err

backend/application/singleagent/create.go

@@ -34,6 +34,15 @@ import (
 )
 
 func (s *SingleAgentApplicationService) CreateSingleAgentDraft(ctx context.Context, req *developer_api.DraftBotCreateRequest) (*developer_api.DraftBotCreateResponse, error) {
+	resp, err := s.appContext.ModelMgr.ListInUseModel(ctx, 1, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(resp.ModelList) == 0 {
+		return nil, errorx.New(errno.ErrAgentNoModelInUseCode)
+	}
+
 	do, err := s.draftBotCreateRequestToSingleAgent(ctx, req)
 	if err != nil {
 		return nil, err

backend/infra/contract/modelmgr/modelmgr.go

@@ -6,6 +6,7 @@ import (
 
 type Manager interface {
 	ListModel(ctx context.Context, req *ListModelRequest) (*ListModelResponse, error)
+	ListInUseModel(ctx context.Context, limit int, Cursor *string) (*ListModelResponse, error)
 	MGetModelByID(ctx context.Context, req *MGetModelRequest) ([]*Model, error)
 }
 

backend/infra/impl/modelmgr/static/modelmgr.go

@@ -26,6 +26,14 @@ type staticModelManager struct {
 	modelMapping map[int64]*modelmgr.Model
 }
 
+func (s *staticModelManager) ListInUseModel(ctx context.Context, limit int, Cursor *string) (*modelmgr.ListModelResponse, error) {
+	return s.ListModel(ctx, &modelmgr.ListModelRequest{
+		Status: []modelmgr.ModelStatus{modelmgr.StatusInUse},
+		Limit:  limit,
+		Cursor: Cursor,
+	})
+}
+
 func (s *staticModelManager) ListModel(_ context.Context, req *modelmgr.ListModelRequest) (*modelmgr.ListModelResponse, error) {
 	startIdx := 0
 	if req.Cursor != nil {

backend/types/errno/agent.go

@@ -35,9 +35,16 @@ const (
 	ErrAgentPublishSingleAgentCode         = 100000010
 	ErrAgentAlreadyBindDatabaseCode        = 100000011
 	ErrAgentExecuteErrCode                 = 100000012
+	ErrAgentNoModelInUseCode               = 100000013
 )
 
 func init() {
+	code.Register(
+		ErrAgentNoModelInUseCode,
+		"there is no llm model in use, please config a model first",
+		code.WithAffectStability(false),
+	)
+
 	code.Register(
 		ErrAgentPublishSingleAgentCode,
 		"publish single agent failed",

backend/types/errno/app.go

@@ -22,12 +22,19 @@ import "github.com/coze-dev/coze-studio/backend/pkg/errorx/code"
 const (
 	ErrAppInvalidParamCode = 101000000
 	ErrAppPermissionCode   = 101000001
-	ErrAppRecordNotFound   = 109000002
+	ErrAppRecordNotFound   = 101000002
+	ErrAppNoModelInUseCode = 101000003
 )
 
 const APPMsgKey = "msg"
 
 func init() {
+	code.Register(
+		ErrAppNoModelInUseCode,
+		"there is no llm model in use, please config a model first",
+		code.WithAffectStability(false),
+	)
+
 	code.Register(
 		ErrAppPermissionCode,
 		"unauthorized access : {msg}",