#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.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Operators;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.Optimization.Operators.LCS {
  [Item("InitializeDiscretizersOperator", "Description missing")]
  [StorableClass]
  public class InitializeDiscretizersOperator : SingleSuccessorOperator {

    #region Parameter Properties
    public ILookupParameter<IGAssistProblemData> ProblemDataParameter {
      get { return (ILookupParameter<IGAssistProblemData>)Parameters["ProblemData"]; }
    }
    public ILookupParameter<ItemCollection<IDiscretizer>> DiscretizersParameter {
      get { return (ILookupParameter<ItemCollection<IDiscretizer>>)Parameters["Discretizers"]; }
    }
    #endregion

    [StorableConstructor]
    protected InitializeDiscretizersOperator(bool deserializing) : base(deserializing) { }
    protected InitializeDiscretizersOperator(InitializeDiscretizersOperator original, Cloner cloner)
      : base(original, cloner) {
    }
    public InitializeDiscretizersOperator()
      : base() {
      Parameters.Add(new LookupParameter<IGAssistProblemData>("ProblemData", ""));
      Parameters.Add(new LookupParameter<ItemCollection<IDiscretizer>>("Discretizers", ""));
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new InitializeDiscretizersOperator(this, cloner);
    }

    public override IOperation Apply() {
      var dataset = ProblemDataParameter.ActualValue.Dataset;
      var trainingIndizes = ProblemDataParameter.ActualValue.TrainingIndices;
      var conditionVariables = ProblemDataParameter.ActualValue.ConditionVariables.CheckedItems.Select(x => x.Value.Value);

      foreach (var variable in dataset.DoubleVariables.Where(x => conditionVariables.Contains(x))) {
        var values = dataset.GetDoubleValues(variable, trainingIndizes);
        foreach (var discretizer in DiscretizersParameter.ActualValue) {
          discretizer.DiscretizeValues(variable, values);
        }
      }

      return base.Apply();
    }
  }
}