#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Text;
using HeuristicLab.Collections;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Encodings.IntegerVectorEncoding;
using HeuristicLab.Encodings.PermutationEncoding;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Problems.BinPacking.Interfaces;

namespace HeuristicLab.Encodings.PackingEncoding.MultiComponentVector {
  [Item("Multi Component Vector Encoding", "Represents an encoding for a bin packing problem using an array of objects containing multiple packing-informations for every packing-item.")]
  [StorableClass]
  public class MultiComponentVectorEncoding : Item, IPackingSolutionEncoding {

    [Storable]
    public ItemList<PackingInformation> PackingInformations {get;set;}   

    [StorableConstructor]
    protected MultiComponentVectorEncoding(bool deserializing) : base(deserializing) { }
    protected MultiComponentVectorEncoding(MultiComponentVectorEncoding original, Cloner cloner)
      : base(original, cloner) {
        this.PackingInformations = cloner.Clone(original.PackingInformations);
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new MultiComponentVectorEncoding(this, cloner);
    }

    public MultiComponentVectorEncoding()
      : base() {
        PackingInformations = new ItemList<PackingInformation>();
    }

    public override string ToString() {
      StringBuilder sb = new StringBuilder();
      sb.Append("[ ");
      foreach (var pi in PackingInformations) {
        sb.Append(pi.ToString() + " ");        
      }
      sb.Append("]");
      return sb.ToString();
    }


    public override bool Equals(object obj) {
      MultiComponentVectorEncoding mce = obj as MultiComponentVectorEncoding;
      if (mce != null && mce.PackingInformations != null && mce.PackingInformations.Count == this.PackingInformations.Count) {
        for (int i = 0; i < mce.PackingInformations.Count; i++) {
          if (mce.PackingInformations[i] != this.PackingInformations[i])
            return false;
        }
      }

      return true;
    }
    public override int GetHashCode() {
      return PackingInformations.GetHashCode();
    }
  }

  [Item("Packing Information", "Represents a composition of packing informations for the multi-component packing-encoding.")]
  [StorableClass]
  public class PackingInformation : Item {
    [Storable]
    public int ItemIndex { get; set; }
    [Storable]
    public int AssignedBin { get; set; }
    [Storable]
    public bool Rotated { get; set; }

    public PackingInformation(int itemIndex, int assignedBin, bool rotated) {
      this.AssignedBin  = assignedBin;
      this.ItemIndex   = itemIndex;
      this.Rotated      = rotated;
    }     
    public PackingInformation(PackingInformation original) {
      this.AssignedBin = original.AssignedBin;
      this.ItemIndex = original.ItemIndex;
      this.Rotated = original.Rotated;
    }

    [StorableConstructor]
    protected PackingInformation(bool deserializing) : base(deserializing) { }
    protected PackingInformation(PackingInformation original, Cloner cloner)
      : base(original, cloner) {
        this.AssignedBin  = original.AssignedBin;
        this.ItemIndex   = original.ItemIndex;
        this.Rotated      = original.Rotated;
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new PackingInformation(this, cloner);
    }

    public override string ToString() {
      return String.Format("({0}, {1}, {2}) ", ItemIndex, AssignedBin, Rotated);
    }

    public override bool Equals(object obj) {
      PackingInformation pi = obj as PackingInformation;
      if (pi != null)
        return this.ItemIndex.Equals(pi.ItemIndex) && this.AssignedBin.Equals(pi.AssignedBin) && this.Rotated.Equals(pi.Rotated);

      return false;
    }

    public override int GetHashCode() {
      return base.GetHashCode();
    }

    public static ItemList<PackingInformation> CreateListRandomly(int items, int lowerBound, IRandom random) {
      Permutation permutation = new Permutation(PermutationTypes.Absolute, items, random);
      var result = new ItemList<PackingInformation>();
      foreach (int itemIndex in permutation) {
        result.Add(new PackingInformation(itemIndex, random.Next(0, lowerBound + 1), random.Next(0, 100) > 60 ? true : false));
      }
      return result;
    }

    public static ItemList<PackingInformation> CreateListRandomlyWithSortedSequence(int items, int lowerBound, IRandom random) {
      Permutation permutation = new Permutation(PermutationTypes.Absolute, items);
      var result = new ItemList<PackingInformation>();
      foreach (int itemIndex in permutation) {
        result.Add(new PackingInformation(itemIndex, random.Next(0, lowerBound + 1), false));
      }
      return result;
    }
  }

}