#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 System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Encodings.ConditionActionEncoding;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Problems.DataAnalysis;

namespace HeuristicLab.Problems.ConditionActionClassification {
  public class ConditionActionClassificationProblemData : ParameterizedNamedItem, IConditionActionProblemData {

    #region default data
    public static string[] defaultVariableNames = new string[] { "a", "b", "c", "d", "e", "f", "g" };
    public static double[,] defaultData = new double[,]{
      {0,0,1,1,0,0,0},
      {0,1,1,1,0,0,0},
      {0,0,1,0,0,0,0},
      {1,0,1,0,1,1,0}
    };
    #endregion

    #region parameter properites
    public IFixedValueParameter<Dataset> DatasetParameter {
      get { return (IFixedValueParameter<Dataset>)Parameters["Dataset"]; }
    }
    public IFixedValueParameter<ReadOnlyCheckedItemList<StringValue>> ConditionVariablesParameter {
      get { return (IFixedValueParameter<ReadOnlyCheckedItemList<StringValue>>)Parameters["ConditionVariables"]; }
    }
    public IFixedValueParameter<ReadOnlyCheckedItemList<StringValue>> ActionVariablesParameter {
      get { return (IFixedValueParameter<ReadOnlyCheckedItemList<StringValue>>)Parameters["ActionVariables"]; }
    }
    #endregion

    public Dataset Dataset {
      get { return DatasetParameter.Value; }
    }

    public ICheckedItemList<StringValue> ConditionVariables {
      get { return ConditionVariablesParameter.Value; }
    }

    public ICheckedItemList<StringValue> ActionVariables {
      get { return ActionVariablesParameter.Value; }
    }

    public IEnumerable<string> AllowedConditionVariables {
      get { return ConditionVariables.CheckedItems.Select(x => x.Value.Value); }
    }
    public IEnumerable<string> AllowedActionVariables {
      get { return ActionVariables.CheckedItems.Select(x => x.Value.Value); }
    }


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

    public ConditionActionClassificationProblemData(Dataset dataset, IEnumerable<string> allowedConditionVariables, IEnumerable<string> allowedActionVariables) {
      if (dataset == null) throw new ArgumentNullException("The dataset must not be null.");
      if (allowedActionVariables == null) throw new ArgumentNullException("The allowedActionVariables must not be null.");
      if (allowedConditionVariables == null) throw new ArgumentNullException("The allowedActionVariables must not be null.");

      if (allowedActionVariables.Except(dataset.DoubleVariables).Any())
        throw new ArgumentException("All allowed action variables must be present in the dataset and of type double.");
      if (allowedConditionVariables.Except(dataset.DoubleVariables).Any())
        throw new ArgumentException("All allowed condition variables must be present in the dataset and of type double.");

      var actionVariables = new CheckedItemList<StringValue>(dataset.DoubleVariables.Select(x => new StringValue(x)));
      var conditionVariables = new CheckedItemList<StringValue>(actionVariables);
      foreach (StringValue x in actionVariables) {
        actionVariables.SetItemCheckedState(x, allowedActionVariables.Contains(x.Value));
        conditionVariables.SetItemCheckedState(x, allowedConditionVariables.Contains(x.Value));
      }

      Parameters.Add(new FixedValueParameter<Dataset>("Dataset", "", dataset));
      Parameters.Add(new FixedValueParameter<ReadOnlyCheckedItemList<StringValue>>("ActionVariables", "", actionVariables.AsReadOnly()));
      Parameters.Add(new FixedValueParameter<ReadOnlyCheckedItemList<StringValue>>("ConditionVariables", "", conditionVariables.AsReadOnly()));

      ((ValueParameter<Dataset>)DatasetParameter).ReactOnValueToStringChangedAndValueItemImageChanged = false;
    }
  }
}