/**
 * Simple
 * 
 * tag: kkvilekval@acm.org Fri Aug  9 15:06:01 2002 (Simple)
 * Copyright kkvilekval@acm.org  See COPYRIGHT for details.
 */


import java.io.FileOutputStream;
import java.io.ObjectOutputStream;

import agl2.Vertex;
import agl2.Graph;
import agl2.GraphBuilder;

import agl2.BigraphBuilder;
import agl2.Bigraph;

import agl2.DigraphBuilder;
import agl2.Digraph;

import agl2.UngraphBuilder;
import agl2.Ungraph;

import agl2.GraphTag;

/**
 *  The <code>Simple</code> description.
 *  @version $Revision$, $Date$
 *  @author Kristian Kvilekval
 */
public class Simple implements GraphTag {

    /* Private/Public Variables */

    /**
     *  The default constructor
     */
    public Simple () {
    }
    static void  usage() {
        System.err.println ("usage: Simple [digraph|ungraph|bigraph]");
    }

    public static void main(String[] args) {
        GraphBuilder gb;

        if (args.length < 1) { usage(); return ; }
        if (args[0].equals( "digraph" )) 
             gb = new DigraphBuilder();
        else if (args[0].equals( "ungraph" )) 
            gb = new UngraphBuilder(new GraphTag[] { UNGRAPH, OBJECT_VERTEX });
        else if (args[0].equals( "bigraph" )) 
            gb = new BigraphBuilder(new GraphTag[] { BIGRAPH, OBJECT_VERTEX });
        else {
            usage();
            return;
        }
        String a,b,c,d,e;
        Object va,vb,vc,vd,ve;

        va = gb.addVertex (a = new String ("a"));
        vb = gb.addVertex (b = new String ("b"));
        vc = gb.addVertex (c = new String ("c"));
        vd = gb.addVertex (d = new String ("d"));
        ve = gb.addVertex (e = new String ("e"));

        gb.addEdge (va,vb, null);
        gb.addEdge (va,vd, null);
        gb.addEdge (vb,vc, null);
        gb.addEdge (vc,vd, null);
        gb.addEdge (vc,ve, null);
        gb.addEdge (vd,va, null);
        gb.addEdge (ve,va, null);

        System.out.println (gb.toString());
        //Ungraph
        //0->1,3,4,
        //1->0,2,
        //2->1,3,4,
        //3->0,2,
        //4->0,2,

        // Digraph

        System.out.println ("has vertext va?"+ gb.hasVertex (va));
        System.out.println ("has vertext a?"+ gb.hasVertex (a));
        System.out.println ("has vertext z?"+ gb.hasVertex (new String("z")));
        
        //Ungraph g = gb.getUngraph();
        //Ungraph g = (Ungraph)gb.getGraph();
        Graph g = gb.getGraph();
        System.out.println (g.toString());


        try {
        FileOutputStream ostream = new FileOutputStream("sample.graph");
        ObjectOutputStream p = new ObjectOutputStream(ostream);
        p.writeObject (g);
        } catch (java.io.IOException io) {
            System.err.println ("Could not save graphs");
            io.printStackTrace();
        }
    }
};