package nl.camilstaps.cs.graphs;

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

/**
 * A Node is a simple point in a graph, with references to its neighbours. It holds an integer 'content' which can act
 * as an identifier.
 *
 * @author Camil Staps
 */
public class Node {
    private final int content;
    private final List<Node> neighbours = new ArrayList<>();

    public Node(int content) {
        this.content = content;
    }

    /**
     * Create a copy of another Node
     * @param copy
     */
    public Node(Node copy) {
        this.content = copy.content;
        this.neighbours.addAll(copy.neighbours);
    }

    public List<Node> getNeighbours() {
        return neighbours;
    }

    public String toString() {
        return "<" + content + ">";
    }

    /**
     * Nodes are equal if their identifiers are equal
     * @param another
     * @return
     */
    public boolean equals(Object another) {
        return !(another == null || another.getClass() != this.getClass()) &&
                content == (((Node) another).content);
    }
}