#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.Collections.Generic;
using System.Linq;
using HeuristicLab.Collections;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.Encodings.ParameterConfigurationEncoding {
  // TODO: control creatable item types ### EDIT: done?
  [StorableClass]
  public class CheckedValueConfigurationList : CheckedItemList<IValueConfiguration>, ICheckedValueConfigurationList {
    [Storable]
    private int minItemCount = 1;
    public int MinItemCount {
      get { return minItemCount; }
    }

    [Storable]
    protected IItemSet<IItem> validValues;
    public IItemSet<IItem> ValidValues {
      get { return validValues; }
    }

    #region Constructors and Cloning
    [StorableConstructor]
    protected CheckedValueConfigurationList(bool deserializing)
      : base(deserializing) {
      RegisterEvents();
    }
    protected CheckedValueConfigurationList(CheckedValueConfigurationList original, Cloner cloner)
      : base(original, cloner) {
      this.minItemCount = original.MinItemCount;
      this.validValues = cloner.Clone(original.validValues);
      RegisterEvents();
    }
    public CheckedValueConfigurationList(IItemSet<IItem> validValues)
      : base() {
      this.validValues = validValues;
      RegisterEvents();
    }
    public CheckedValueConfigurationList(IEnumerable<IValueConfiguration> collection)
      : base(collection) {
      validValues = null;
      // event wiring not needed
    }
    public CheckedValueConfigurationList()
      : base() {
      RegisterEvents();
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new CheckedValueConfigurationList(this, cloner);
    }
    [StorableHook(HookType.AfterDeserialization)]
    private void AfterDeserialization() {
      RegisterEvents();
    }
    #endregion

    private void RegisterEvents() {
      this.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<IValueConfiguration>>(CheckedValueConfigurationList_ItemsAdded);
    }

    private void DeregisterEvents() {
      this.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<IValueConfiguration>>(CheckedValueConfigurationList_ItemsAdded);
    }

    #region Events
    private void CheckedValueConfigurationList_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IValueConfiguration>> e) {
      foreach (var item in e.Items) {
        var matchingItems = this.Where(x => x != item.Value && x.ActualValue.ValueDataType == item.Value.ActualValue.ValueDataType);
        if (matchingItems.Any()) {
          int maxNumber = matchingItems.Select(x => x.Number).Max();
          item.Value.Number = maxNumber + 1;
        }
      }
    }
    #endregion
  }
}