cli: remove BeforeApply hooks and align command structs

cmd/notif.go

@@ -5,22 +5,30 @@ import (
 	"fmt"
 
 	"github.com/crazy-max/diun/v4/pb"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 )
 
 // NotifCmd holds notif command
 type NotifCmd struct {
-	Test NotifTestCmd `kong:"cmd,help='Test notification settings.'"`
+	Test NotifTestCmd `cmd:"" help:"Test notification settings."`
 }
 
 // NotifTestCmd holds notif test command
 type NotifTestCmd struct {
-	CliGlobals
+	GRPCAuthority string `name:"grpc-authority" default:"127.0.0.1:42286" help:"Link to Diun gRPC server."`
 }
 
 func (s *NotifTestCmd) Run(_ *Context) error {
-	defer s.conn.Close()
+	conn, err := grpc.NewClient(s.GRPCAuthority, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
 
-	nt, err := s.notifSvc.NotifTest(context.Background(), &pb.NotifTestRequest{})
+	notifSvc := pb.NewNotifServiceClient(conn)
+
+	nt, err := notifSvc.NotifTest(context.Background(), &pb.NotifTestRequest{})
 	if err != nil {
 		return err
 	}