package model;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.util.ArrayList;
import java.util.List;

//
// Autor:
// Mateusz Lukaszenko, 96249
//
public class Node {

    private static Log log = LogFactory.getLog(Node.class);

    private String value; //zawiera operator lub stałą lub zmienna
    private List<Node> children = new ArrayList<>();
    private Node parent;

    public Node() {
    }

    public Node(String value, Node parent) {
        this.value = value;
        this.parent = parent;
    }

    public void addChild(int index, Node node) {
        this.getChildren().add(index, node);
        node.setParent(this);
    }

    public boolean hasParent() {
        return (this.getParent() != null);
    }

    public boolean hasChildren() {
        return this.getChildren().size() > 0;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public List<Node> getChildren() {
        return children;
    }

    public void setChildren(List<Node> children) {
        this.children = children;
    }

    public List<Node> getNodeWithAllOffspring() { //todo sprawdzic czy dizala
        List<Node> nodesList = new ArrayList<>();
        nodesList.add(this);
        this.addChildrenToList(nodesList);
        return nodesList;
    }

    private List<Node> addChildrenToList(List<Node> nodes) {
        if (this.hasChildren()) {
            Node child0 = this.getChildren().get(0);
            Node child1 = this.getChildren().get(1);
            nodes.add(child0);
            nodes.add(child1);
            if (child0.hasChildren()) child0.addChildrenToList(nodes);
            if (child1.hasChildren()) child1.addChildrenToList(nodes);
        }
        return nodes;
    }

    public Node getParent() {
        return parent;
    }

    public void setParent(Node parent) {
        this.parent = parent;
    }
}