public class MainTest {

    @GroupCommandDefinition(name = "gp-main", description = "test", groupCommands = {SubGroupCommand.class})
    public static class GroupCommand implements Command {

        @Option(shortName = 'h', overrideRequired = true, hasValue = false, required = true, description = "print help")
        private boolean help;

        Shell shell;

        public CommandResult execute(CommandInvocation commandInvocation) throws CommandException, InterruptedException {
            this.shell = commandInvocation.getShell();
            if (help) {
                shell.writeln(commandInvocation.getHelpInfo("gp-main"));
            }
            System.out.println("Im in gp-main");
            return CommandResult.SUCCESS;
        }

    }

    @GroupCommandDefinition(name = "gp-sub", description = "sub group", groupCommands = {MainCommand.class})
    public static class SubGroupCommand implements Command {

        @Option(overrideRequired = true, hasValue = false)
        private boolean help;

        Shell shell;

        @Override
        public CommandResult execute(CommandInvocation commandInvocation) throws CommandException, InterruptedException {
            this.shell = commandInvocation.getShell();
            if (help) {
                shell.writeln(commandInvocation.getHelpInfo("gp-sub"));
            }
            System.out.println("Im in gp-sub");
            return CommandResult.SUCCESS;
        }

    }

    @CommandDefinition(name = "command", description = "main command")
    public static class MainCommand implements Command {

        @Option(overrideRequired = true, hasValue = false)
        private boolean help;

        Shell shell;

        public CommandResult execute(CommandInvocation commandInvocation) throws CommandException, InterruptedException {
            this.shell = commandInvocation.getShell();
            if (help) {
                shell.writeln(commandInvocation.getHelpInfo("command"));
            }
            System.out.println("Im in main command");
            return CommandResult.SUCCESS;
        }
    }

    public static void main(String[] args) throws Exception {
        CommandRegistry registry = new AeshCommandRegistryBuilder()
                .command(GroupCommand.class)
                .command(SubGroupCommand.class)
                .command(MainCommand.class)
                .create();

        CommandRuntime runtime = AeshCommandRuntimeBuilder
                .builder()
                .commandRegistry(registry)
                .build();

        System.out.println("--------------------------------------");
        runtime.executeCommand("gp-main --help");
        System.out.println("--------------------------------------");
        runtime.executeCommand("gp-main gp-sub --help");
        System.out.println("--------------------------------------");
        runtime.executeCommand("gp-main gp-sub command --help");
        System.out.println("--------------------------------------");
    }
}