// patterns/trash/Bins.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
package patterns.trash;
import java.util.*;

public class Bins {
  final List<Trash> bin;
  final List<Aluminum> aluminum = new ArrayList<>();
  final List<Paper> paper = new ArrayList<>();
  final List<Glass> glass = new ArrayList<>();
  final List<Cardboard> cardboard = new ArrayList<>();
  public Bins(List<Trash> source) {
    bin = new ArrayList<>(source); // Copy
    bin.forEach( t -> {
      // Use reflection to discover Trash type:
      if(t instanceof Aluminum)
        aluminum.add((Aluminum)t);
      if(t instanceof Paper)
        paper.add((Paper)t);
      if(t instanceof Glass)
        glass.add((Glass)t);
      if(t instanceof Cardboard)
        cardboard.add((Cardboard)t);
    });
  }
  public void show() {
    TrashValue.sum(aluminum, "Aluminum");
    TrashValue.sum(paper, "Paper");
    TrashValue.sum(glass, "Glass");
    TrashValue.sum(cardboard, "Cardboard");
    TrashValue.sum(bin, "Trash");
  }
}