[client] Add state handling cmdline options (#2821)

client/server/state.go

@@ -5,12 +5,112 @@ import (
 	"fmt"
 
 	"github.com/hashicorp/go-multierror"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 
 	nberrors "github.com/netbirdio/netbird/client/errors"
+	"github.com/netbirdio/netbird/client/internal"
 	"github.com/netbirdio/netbird/client/internal/statemanager"
+	"github.com/netbirdio/netbird/client/proto"
 )
 
-// restoreResidualConfig checks if the client was not shut down in a clean way and restores residual state if required.
+// ListStates returns a list of all saved states
+func (s *Server) ListStates(_ context.Context, _ *proto.ListStatesRequest) (*proto.ListStatesResponse, error) {
+	mgr := statemanager.New(statemanager.GetDefaultStatePath())
+
+	stateNames, err := mgr.GetSavedStateNames()
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get saved state names: %v", err)
+	}
+
+	states := make([]*proto.State, 0, len(stateNames))
+	for _, name := range stateNames {
+		states = append(states, &proto.State{
+			Name: name,
+		})
+	}
+
+	return &proto.ListStatesResponse{
+		States: states,
+	}, nil
+}
+
+// CleanState handles cleaning of states (performing cleanup operations)
+func (s *Server) CleanState(ctx context.Context, req *proto.CleanStateRequest) (*proto.CleanStateResponse, error) {
+	if s.connectClient.Status() == internal.StatusConnected || s.connectClient.Status() == internal.StatusConnecting {
+		return nil, status.Errorf(codes.FailedPrecondition, "cannot clean state while connecting or connected, run 'netbird down' first.")
+	}
+
+	if req.All {
+		// Reuse existing cleanup logic for all states
+		if err := restoreResidualState(ctx); err != nil {
+			return nil, status.Errorf(codes.Internal, "failed to clean all states: %v", err)
+		}
+
+		// Get count of cleaned states
+		mgr := statemanager.New(statemanager.GetDefaultStatePath())
+		stateNames, err := mgr.GetSavedStateNames()
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "failed to get state count: %v", err)
+		}
+
+		return &proto.CleanStateResponse{
+			CleanedStates: int32(len(stateNames)),
+		}, nil
+	}
+
+	// Handle single state cleanup
+	mgr := statemanager.New(statemanager.GetDefaultStatePath())
+	registerStates(mgr)
+
+	if err := mgr.CleanupStateByName(req.StateName); err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to clean state %s: %v", req.StateName, err)
+	}
+
+	if err := mgr.PersistState(ctx); err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to persist state changes: %v", err)
+	}
+
+	return &proto.CleanStateResponse{
+		CleanedStates: 1,
+	}, nil
+}
+
+// DeleteState handles deletion of states without cleanup
+func (s *Server) DeleteState(ctx context.Context, req *proto.DeleteStateRequest) (*proto.DeleteStateResponse, error) {
+	if s.connectClient.Status() == internal.StatusConnected || s.connectClient.Status() == internal.StatusConnecting {
+		return nil, status.Errorf(codes.FailedPrecondition, "cannot clean state while connecting or connected, run 'netbird down' first.")
+	}
+
+	mgr := statemanager.New(statemanager.GetDefaultStatePath())
+
+	var count int
+	var err error
+
+	if req.All {
+		count, err = mgr.DeleteAllStates()
+	} else {
+		err = mgr.DeleteStateByName(req.StateName)
+		if err == nil {
+			count = 1
+		}
+	}
+
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to delete state: %v", err)
+	}
+
+	// Persist the changes
+	if err := mgr.PersistState(ctx); err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to persist state changes: %v", err)
+	}
+
+	return &proto.DeleteStateResponse{
+		DeletedStates: int32(count),
+	}, nil
+}
+
+// restoreResidualState checks if the client was not shut down in a clean way and restores residual if required.
 // Otherwise, we might not be able to connect to the management server to retrieve new config.
 func restoreResidualState(ctx context.Context) error {
 	path := statemanager.GetDefaultStatePath()
@@ -24,6 +124,7 @@ func restoreResidualState(ctx context.Context) error {
 	registerStates(mgr)
 
 	var merr *multierror.Error
+
 	if err := mgr.PerformCleanup(); err != nil {
 		merr = multierror.Append(merr, fmt.Errorf("perform cleanup: %w", err))
 	}