Creating a basic command

All commands are based in the Picocli's API, the only difference is that the classes are automatically registered at the start of the plugin. To allow auto registration, you also need to annotate all classes with @Component.

Example of a command:

@Component
@CommandLine.Command(name = "hello")
public class HelloCommand implements Callable<String> {

    @CommandLine.Parameters(index = "0", defaultValue = "world")
    private String name;

    @Override
    public String call() {
        return "hello " + name;
    }
}

If you need the sender of the command, you can also retrieve it in the Context:

@Component
@CommandLine.Command(name = "heal")
public class HealCommand implements Runnable {

    @Autowired
    private Context context;

    @Override
    public void run() {
        Player player = context.getPlayer();
        player.setHealth(20);
    }
}

In addition, you can also inject the Plugin and Server instances via @Autowired