#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.Collections.Generic;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Operators;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.Encodings.ConditionActionEncoding {
  [Item("InsertInPopulationOperator", "Description missing")]
  [StorableClass]
  public class InsertInPopulationOperator : SingleSuccessorOperator {

    #region Parameter Properties
    public ILookupParameter<ItemArray<BoolValue>> InsertInPopulationParameter {
      get { return (ILookupParameter<ItemArray<BoolValue>>)Parameters["InsertInPopulation"]; }
    }
    public ILookupParameter<ItemArray<IClassifier>> ClassifiersParameter {
      get { return (ILookupParameter<ItemArray<IClassifier>>)Parameters["Classifiers"]; }
    }
    public ILookupParameter<ItemArray<IntValue>> NumerositiesParameter {
      get { return (ILookupParameter<ItemArray<IntValue>>)Parameters["Numerosity"]; }
    }
    public ILookupParameter<ItemArray<BoolValue>> HasToBeDeletedParameter {
      get { return (ILookupParameter<ItemArray<BoolValue>>)Parameters["HasToBeDeleted"]; }
    }
    #endregion

    [StorableConstructor]
    protected InsertInPopulationOperator(bool deserializing) : base(deserializing) { }
    protected InsertInPopulationOperator(InsertInPopulationOperator original, Cloner cloner)
      : base(original, cloner) {
    }
    public InsertInPopulationOperator()
      : base() {
      Parameters.Add(new ScopeTreeLookupParameter<BoolValue>("InsertInPopulation"));
      Parameters.Add(new ScopeTreeLookupParameter<IClassifier>("Classifiers"));
      Parameters.Add(new ScopeTreeLookupParameter<IntValue>("Numerosity"));
      Parameters.Add(new ScopeTreeLookupParameter<BoolValue>("HasToBeDeleted"));
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new InsertInPopulationOperator(this, cloner);
    }

    public override IOperation Apply() {
      var numerosities = NumerositiesParameter.ActualValue;
      var classifiers = ClassifiersParameter.ActualValue;
      var hasToBeDeleted = HasToBeDeletedParameter.ActualValue;
      var insertInPopulation = InsertInPopulationParameter.ActualValue;

      if (insertInPopulation.Length != numerosities.Length || insertInPopulation.Length != classifiers.Length
        || insertInPopulation.Length != hasToBeDeleted.Length) {
        throw new ArgumentException("Different number of classifiers, numerosity, hasToBeDeleted and insertInPopulation values.");
      }

      IList<int> insertIndices = new List<int>();
      for (int i = 0; i < insertInPopulation.Length; i++) {
        if (insertInPopulation[i].Value) {
          insertIndices.Add(i);
        }
      }

      foreach (var indices in insertIndices) {
        IClassifier cl = classifiers[indices];
        for (int i = 0; i < classifiers.Length; i++) {
          if (!hasToBeDeleted[i].Value && !insertInPopulation[i].Value && cl.Identical(classifiers[i])) {
            numerosities[i].Value += numerosities[indices].Value;
            hasToBeDeleted[indices].Value = true;
            break;
          }
        }
        insertInPopulation[indices].Value = false;
      }

      return base.Apply();
    }
  }
}