#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2018 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.IO;
using System.IO.Compression;
using System.Linq;
using System.Reflection;
using System.Text.RegularExpressions;

namespace HeuristicLab.Problems.Instances.PermutationProblems.PFSP {
  public class FSSPTAILIBInstanceProvider : ProblemInstanceProvider<FSSPData> {

    public override string Name
    {
      get { return "FSSPTAI"; }
    }

    public override string Description
    {
      get { return "Permutation Flowshop Scheduling Problems (PFSP) as defined by Taillard."; }
    }

    public override Uri WebLink
    {
      get { return new Uri("http://mistic.heig-vd.ch/taillard/problemes.dir/ordonnancement.dir/ordonnancement.html"); }
    }

    public override string ReferencePublication
    {
      get { return "Taillard, E. (1993). Benchmarks for basic scheduling problems. European Journal of Operational Research, 64(2), 278–285. https://doi.org/10.1016/0377-2217(93)90182-m"; }
    }

    public override IEnumerable<IDataDescriptor> GetDataDescriptors() {
      var instanceArchiveName = GetResourceName("FSSPTAI.zip");
      if (String.IsNullOrEmpty(instanceArchiveName)) yield break;

      using (var instanceStream = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) {
        foreach (var entry in instanceStream.Entries.Select(x => x.Name).OrderBy(x => x)) {
          yield return new FSSPTAILIBDataDescriptor(Path.GetFileNameWithoutExtension(entry), GetDescription(), entry, null);
        }
      }
    }

    public override FSSPData LoadData(IDataDescriptor id) {
      var descriptor = (FSSPTAILIBDataDescriptor)id;
      var instanceArchiveName = GetResourceName("FSSPTAI.zip");
      using (var instancesZipFile = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) {
        var entry = instancesZipFile.GetEntry(descriptor.InstanceIdentifier);

        using (var stream = entry.Open()) {
          var parser = new FSSPTAILIBParser();
          parser.Parse(stream);
          return Load(parser);
        }
      }
    }

    public override bool CanImportData
    {
      get { return true; }
    }
    public override FSSPData ImportData(string path) {
      var parser = new FSSPTAILIBParser();
      parser.Parse(path);
      return Load(parser);
    }

    private FSSPData Load(FSSPTAILIBParser parser) {
      var instance = new FSSPData {
        Name = parser.Name,
        Description = parser.Description,
        Jobs = parser.Jobs,
        Machines = parser.Machines,
        ProcessingTimes = parser.ProcessingTimes,
        BestKnownSchedule = parser.BestKnownSchedule,
        BestKnownQuality = parser.BestKnownQuality
      };
      return instance;
    }

    public override bool CanExportData
    {
      get { return false; }
    }

    private string GetDescription() {
      return "Embedded instance of plugin version " + Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyFileVersionAttribute), true).Cast<AssemblyFileVersionAttribute>().First().Version + ".";
    }

    protected virtual string GetResourceName(string fileName) {
      return Assembly.GetExecutingAssembly().GetManifestResourceNames()
        .SingleOrDefault(x => Regex.Match(x, @".*\.Data\." + fileName).Success);
    }
  }
}