#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2016 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 HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.GoalSeeking {
  [Item("InputParameter", "An object describing a target for the goal seeking.")]
  [StorableClass]
  public class InputParameter : NamedItem {
    [Storable]
    private double min;
    public double Min {
      get { return min; }
      set {
        if (double.IsNaN(value) || double.IsInfinity(value)) return;
        if (min.IsAlmost(value)) return;
        min = value;
        OnChanged(this, EventArgs.Empty);
      }
    }

    [Storable]
    private double max;
    public double Max {
      get { return max; }
      set {
        if (double.IsNaN(value) || double.IsInfinity(value)) return;
        if (max.IsAlmost(value)) return;
        max = value;
        OnChanged(this, EventArgs.Empty);
      }
    }

    [Storable]
    private double step;
    public double Step {
      get { return step; }
      set {
        if (double.IsNaN(value) || double.IsInfinity(value)) return;
        if (step.IsAlmost(value)) return;
        step = value;
        OnChanged(this, EventArgs.Empty);
      }
    }

    [Storable]
    private double value;
    public double Value {
      get { return value; }
      set {
        if (double.IsNaN(value) || double.IsInfinity(value)) return;
        if (this.value.IsAlmost(value)) return;
        this.value = value;
        OnChanged(this, EventArgs.Empty);
      }
    }

    [Storable]
    private bool active;
    public bool Active {
      get { return active; }
      set {
        if (active == value) return;
        active = value;
        OnChanged(this, EventArgs.Empty);
      }
    }

    public override string ToString() {
      return string.Format("{0} [active: {1}; value: {2}; min: {3}; max: {4}; step: {5}]", Name, Active, Value, Min, Max, Step);
    }

    protected InputParameter(InputParameter original, Cloner cloner) : base(original, cloner) {
      name = original.name;
      min = original.min;
      max = original.max;
      step = original.step;
      value = original.value;
      active = original.active;
    }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new InputParameter(this, cloner);
    }

    [StorableConstructor]
    protected InputParameter(bool deserializing) : base(deserializing) { }

    public InputParameter(string name, double value, double min, double max, double step, bool active = true) {
      this.name = name;
      this.value = value;
      this.min = min;
      this.max = max;
      this.step = step;
      this.active = active;
    }

    public event EventHandler Changed;
    private void OnChanged(object sender, EventArgs args) {
      var changed = Changed;
      if (changed == null) return;
      changed(sender, args);
    }
  }
}