Commands

public final class WaypointCommand extends Command {
    private final WaypointStore waypoints;
 
    public WaypointCommand(WaypointStore waypoints) {
        super("waypoint", "Adds, removes and lists waypoints.", "wp");   // name, description, aliases
        this.waypoints = waypoints;
    }
 
    @Override
    public void build(LiteralArgumentBuilder<SharedSuggestionProvider> b) {
        b.executes(c -> {                                                 // .waypoint
            waypoints.all().forEach((name, pos) -> info(Component.literal(name + " ").append(Texts.coords(pos))));
            return SINGLE_SUCCESS;
        });
        b.then(literal("add").then(argument("name", StringArgumentType.word())
            .then(argument("pos", Arguments.blockPos()).executes(c -> {      // .waypoint add home ~ ~ ~
                BlockPos pos = c.getArgument("pos", BlockPos.class);
                waypoints.put(StringArgumentType.getString(c, "name"), pos);
                return SINGLE_SUCCESS;
            }))));
        b.then(literal("remove").then(argument("name", Arguments.suggesting(waypoints::names)).executes(c -> {
            if (!waypoints.remove(StringArgumentType.getString(c, "name"))) {
                error("No waypoint by that name");
                return 0;
            }
            return SINGLE_SUCCESS;
        })));
    }
}