//-----------------------------------------------------------------------------
//Cortex
//Copyright (c) 2010-2015, Joshua Scoggins 
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions are met:
//    * Redistributions of source code must retain the above copyright
//      notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above copyright
//      notice, this list of conditions and the following disclaimer in the
//      documentation and/or other materials provided with the distribution.
//    * Neither the name of Cortex nor the
//      names of its contributors may be used to endorse or promote products
//      derived from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
//ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//DISCLAIMED. IN NO EVENT SHALL Joshua Scoggins BE LIABLE FOR ANY
//DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
//(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
//ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//-----------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Runtime;
using System.Text;
using System.Text.RegularExpressions;
using System.Reflection;
using System.IO;
using System.Linq;

namespace Cortex.Operation
{
  public class GraphVizLink : IGraphLink
  {
    private int from, to;
    private string label;
    public int From { get { return from; } }
    public int To { get { return to; } }
    public string Label { get { return label; } }
    public GraphVizLink(int from, int to, string label)
    {
      this.from = from;
      this.to = to;
      this.label = label;
    }

    public override string ToString()
    {
      if(label.Equals(string.Empty))
        return string.Format("node{0} -> node{1};", From, To);
      else
        return string.Format("node{0} -> node{1} {2};", From, To, Label);
    }
  }
  public class GraphVizGraphBuilder : GraphBuilder<GraphVizLink>
  {
    public GraphVizGraphBuilder() : base() { }
    public override void Link(int i0, int i1, string label)
    {
      Add(new GraphVizLink(i0,i1,label));
    }
    public override string ToString(string graphName)
    {
      StringBuilder sb = new StringBuilder();
      sb.AppendFormat("digraph {0}\n",graphName);
      sb.AppendLine("{");
      foreach(var v in this)
        sb.AppendLine(v.ToString());
      sb.AppendLine("}");
      return sb.ToString();
    }
  }
}
