fix: keep showing migration success page after creating migration file

After creating a node migration file the hub is halted and the Alby
OAuth token is intentionally removed, so visiting the homepage sent the
user through /start into the Alby OAuth flow. Track the halted state
in memory and redirect back to the migration success page instead.

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

api/api.go

@@ -50,6 +50,9 @@ type api struct {
 	startupError     error
 	startupErrorTime time.Time
 	eventPublisher   events.EventPublisher
+	// set after a migration file is created; the hub is halted at that point
+	// and the frontend should keep showing the migration success page
+	nodeMigrationFileCreated bool
 }
 
 func NewAPI(svc service.Service, gormDB *gorm.DB, config config.Config, keys keys.Keys, albySvc alby.AlbyService, albyOAuthSvc alby.AlbyOAuthService, eventPublisher events.EventPublisher) *api {
@@ -1510,6 +1513,7 @@ func (api *api) GetInfo(ctx context.Context) (*InfoResponse, error) {
 	}
 	lnClient := api.svc.GetLNClient()
 	info.Running = lnClient != nil
+	info.NodeMigrationFileCreated = api.nodeMigrationFileCreated
 	info.BackendType = backendType
 	info.AlbyAuthUrl = api.albyOAuthSvc.GetAuthUrl()
 	info.OAuthRedirect = !api.cfg.GetEnv().IsDefaultClientId()

api/backup.go

@@ -197,6 +197,8 @@ func (api *api) CreateBackup(unlockPassword string, w io.Writer) error {
 
 	logger.Logger.Info("Successfully created backup to migrate Alby Hub to another device")
 
+	api.nodeMigrationFileCreated = true
+
 	return nil
 }
 

api/models.go

@@ -338,6 +338,7 @@ type InfoResponse struct {
 	JitChannelsEnabled            bool                `json:"jitChannelsEnabled"`
 	HideUpdateBanner              bool                `json:"hideUpdateBanner"`
 	SupportsBolt12                bool                `json:"supportsBolt12"`
+	NodeMigrationFileCreated      bool                `json:"nodeMigrationFileCreated"`
 }
 
 type UpdateSettingsRequest struct {

frontend/src/components/redirects/HomeRedirect.tsx

@@ -14,6 +14,13 @@ export function HomeRedirect() {
       return;
     }
 
+    if (info.nodeMigrationFileCreated) {
+      // the hub is halted after creating a migration file and should not be
+      // used anymore, so keep showing the migration success instructions
+      navigate("/create-node-migration-file-success", { replace: true });
+      return;
+    }
+
     const setupReturnTo = window.localStorage.getItem(
       localStorageKeys.setupReturnTo
     );

frontend/src/components/redirects/StartRedirect.tsx

@@ -9,6 +9,12 @@ export function StartRedirect({ children }: React.PropsWithChildren) {
   const navigate = useNavigate();
 
   React.useEffect(() => {
+    if (info?.nodeMigrationFileCreated) {
+      // the hub is halted after creating a migration file and should not be
+      // used anymore, so keep showing the migration success instructions
+      navigate("/create-node-migration-file-success", { replace: true });
+      return;
+    }
     if (!info || (info.setupCompleted && !info.running)) {
       if (info && !info.albyAccountConnected && info.albyUserIdentifier) {
         navigate("/alby/auth");

frontend/src/types.ts

@@ -187,6 +187,7 @@ export interface InfoResponse {
   jitChannelsEnabled: boolean;
   hideUpdateBanner: boolean;
   supportsBolt12: boolean;
+  nodeMigrationFileCreated: boolean;
 }
 
 export type BitcoinDisplayFormat = "sats" | "bip177";