package graph;

import java.util.Objects;
import java.util.Vector;

public class UndirectedGraph<T, U> extends Graph<T, U> {

    public UndirectedGraph() {
        super();
    }


    public UndirectedGraph(String s) {
        super(s);
    }


    public boolean areAdjacent(MarkedVertex<T> n1, MarkedVertex<T> n2) {
        return true;
    }


    public boolean areAdjacent(String s1, String s2) throws NameDoesNotExistException {
        return true;
    }


    public String toString() {
        return "";
    }


    public int degree(MarkedVertex<T> n) {
        int degree = 0;
        for (MarkedEdge<U> i: this.getAllEdges()) {
            if (i.getSource() == n) {
                degree += 1;
            }
            if (i.getDestination() == n) {
                degree += 1;
            }
        }
        return degree;
    }


    public int degree(String s) throws NameDoesNotExistException{
        for (MarkedVertex<T> i: this.getAllVertexes()) {
            if (Objects.equals(i.getName(), s)) {
                return degree(i);
            }
        }
        throw new NameDoesNotExistException("One of the Vertexes might not exist");
    }


    public Vector<MarkedVertex<T>> getNeighbours(MarkedVertex<T> n) {
        Vector<MarkedVertex<T>> neighbours = new Vector<>();
        for (MarkedEdge<U> i: this.getAllEdges()) {
            if (i.getSource() == n && !neighbours.contains(i.getDestination())) {
                neighbours.add(i.getDestination());
            } else if (i.getDestination() == n && !neighbours.contains(i.getSource())) {
                neighbours.add(i.getSource());
            }
        }
        return neighbours;
    }
}