package myBtree;

import java.util.function.Consumer;
import java.util.Optional;

import myBtree.Btree;
import myBtree.Empty;

final public class BtreeWrapper<T extends Comparable<T>> {

  private Btree<T> bt = null;

  static public<T extends Comparable<T>> BtreeWrapper<T> CreateEmpty() {
    return new BtreeWrapper<T>();
  }

  private BtreeWrapper() {
    this.bt = new Empty<T>();
  }

  private BtreeWrapper(Btree<T> other) {
    this.bt = other;
  }

  public BtreeWrapper<T> getBtreeWrapper() {
    return new BtreeWrapper<T>(this.bt);
  } 

  public void display(Consumer<T> func) {
    this.bt.display(func);
  }

  public BtreeWrapper<T> add(T data) {
    this.bt = this.bt.add(data);
    return this;
  }

  public Optional<BtreeWrapper<T>> find(T data) {
  var ans = this.bt.find(data);
    if (ans.isEmpty()) {
      return Optional.empty();
    }else {
      return Optional.of(new BtreeWrapper<T>(ans.get()));
    }
  }

  public boolean isEmpty() {
    return this.bt.isEmpty();
  }

  public BtreeWrapper<T> remove(T data) {
    this.bt = this.bt.remove(data);
    return this;
  }

}