#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 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.Services.OKB.DataAccess;

namespace HeuristicLab.Services.OKB {
  public class ExperimentEqualityComparer : IEqualityComparer<Experiment> {
    public bool Equals(Experiment x, Experiment y) {
      bool equal = true;
      equal = equal && x.AlgorithmId == y.AlgorithmId;
      equal = equal && x.ProblemId == y.ProblemId;
      equal = equal && x.AlgorithmParameterBlobValues.Count == y.AlgorithmParameterBlobValues.Count;
      equal = equal && x.AlgorithmParameterBoolValues.Count == y.AlgorithmParameterBoolValues.Count;
      equal = equal && x.AlgorithmParameterFloatValues.Count == y.AlgorithmParameterFloatValues.Count;
      equal = equal && x.AlgorithmParameterIntValues.Count == y.AlgorithmParameterIntValues.Count;
      equal = equal && x.AlgorithmParameterStringValues.Count == y.AlgorithmParameterStringValues.Count;
      equal = equal && x.ProblemParameterBlobValues.Count == y.ProblemParameterBlobValues.Count;
      equal = equal && x.ProblemParameterBoolValues.Count == y.ProblemParameterBoolValues.Count;
      equal = equal && x.ProblemParameterFloatValues.Count == y.ProblemParameterFloatValues.Count;
      equal = equal && x.ProblemParameterIntValues.Count == y.ProblemParameterIntValues.Count;
      equal = equal && x.ProblemParameterStringValues.Count == y.ProblemParameterStringValues.Count;

      if (equal) {
        var values = x.AlgorithmParameterBlobValues.Zip(y.AlgorithmParameterBlobValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.AlgorithmParameterId == value.Y.AlgorithmParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value.Length == value.Y.Value.Length;
          if (equal) {
            byte[] xBlob = value.X.Value.ToArray();
            byte[] yBlob = value.Y.Value.ToArray();
            int i = 0;
            while (equal && (i < xBlob.Length)) {
              equal = equal && xBlob[i] == yBlob[i];
              i++;
            }
          }
        }
      }
      if (equal) {
        var values = x.AlgorithmParameterBoolValues.Zip(y.AlgorithmParameterBoolValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.AlgorithmParameterId == value.Y.AlgorithmParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.AlgorithmParameterFloatValues.Zip(y.AlgorithmParameterFloatValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.AlgorithmParameterId == value.Y.AlgorithmParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.AlgorithmParameterIntValues.Zip(y.AlgorithmParameterIntValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.AlgorithmParameterId == value.Y.AlgorithmParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.AlgorithmParameterStringValues.Zip(y.AlgorithmParameterStringValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.AlgorithmParameterId == value.Y.AlgorithmParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }

      if (equal) {
        var values = x.ProblemParameterBlobValues.Zip(y.ProblemParameterBlobValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.ProblemParameterId == value.Y.ProblemParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value.Length == value.Y.Value.Length;
          if (equal) {
            byte[] xBlob = value.X.Value.ToArray();
            byte[] yBlob = value.Y.Value.ToArray();
            int i = 0;
            while (equal && (i < xBlob.Length)) {
              equal = equal && xBlob[i] == yBlob[i];
              i++;
            }
          }
        }
      }
      if (equal) {
        var values = x.ProblemParameterBoolValues.Zip(y.ProblemParameterBoolValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.ProblemParameterId == value.Y.ProblemParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.ProblemParameterFloatValues.Zip(y.ProblemParameterFloatValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.ProblemParameterId == value.Y.ProblemParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.ProblemParameterIntValues.Zip(y.ProblemParameterIntValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.ProblemParameterId == value.Y.ProblemParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }
      if (equal) {
        var values = x.ProblemParameterStringValues.Zip(y.ProblemParameterStringValues, (a, b) => new { X = a, Y = b });
        foreach (var value in values) {
          equal = equal && value.X.ProblemParameterId == value.Y.ProblemParameterId;
          equal = equal && value.X.DataTypeId == value.Y.DataTypeId;
          equal = equal && value.X.Value == value.Y.Value;
        }
      }

      return equal;
    }

    public int GetHashCode(Experiment obj) {
      return obj.GetHashCode();
    }
  }
}