#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.IO;
using System.Linq;
using System.Reflection;
using CommandLine;
using HeuristicLab.Clients.Hive;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Optimization;
using HeuristicLab.PluginInfrastructure;
using HeuristicLab.PluginInfrastructure.Manager;

namespace HiveIraceResult {
  class Program {
    private const int EXIT_OK = 0;
    private const int EXIT_ERR = 1;

    static void Main(string[] args) {
      //AppDomain.CurrentDomain.SetData("APP_CONFIG_FILE", "HiveIraceResult.exe.config");

      var result = Parser.Default.ParseArguments<Options>(args)
        .WithParsed(x => {
          try {
            Environment.Exit(Initialize(x));
          } catch (Exception e) {
            Console.Error.WriteLine(e.Message + Environment.NewLine + e.StackTrace);
            Environment.Exit(EXIT_ERR);
          }
        })
        .WithNotParsed(x => Environment.Exit(EXIT_ERR));
    }

    private static int Initialize(Options opts) {
#if __DRY_RUN__
      var random = new Random();
      Console.WriteLine(random.Next(100000));
      return EXIT_OK;
#endif

      var pluginManager = new PluginManager(Path.GetDirectoryName(Environment.GetCommandLineArgs()[0]));
      pluginManager.DiscoverAndCheckPlugins();

      var appManagerType = Assembly.GetAssembly(typeof(IPlugin)).DefinedTypes.Single(x => x.Name == "DefaultApplicationManager");
      var appManager = Activator.CreateInstance(appManagerType, true);
      var method = appManagerType.GetMethod("PrepareApplicationDomain", BindingFlags.NonPublic | BindingFlags.Instance);
      method.Invoke(appManager, new object[] { pluginManager.Applications, pluginManager.Plugins });

      ContentManager.Initialize(new PersistenceContentManager());

      return Run(opts);
    }

    private static int Run(Options opts) {
      HiveClient.Instance.Refresh();

      var jobName = Properties.Settings.Default.JobPrefix + " " + string.Join("-", opts.ConfigId, opts.InstanceId, opts.Seed);
      var job = HiveClient.Instance.Jobs.SingleOrDefault(x => x.Job.Name == jobName);
      if (job == null) return EXIT_ERR;

      HiveClient.LoadJob(job);
      var task = job.HiveTasks.Single();
      //var job = HiveServiceLocator.Instance.CallHiveService(x => x.GetJobs()).Single(x => x.Name == jobName);
      //var task = HiveServiceLocator.Instance.CallHiveService(x => x.GetLightweightJobTasksWithoutStateLog(job.Id)).Single();
      //var itemTask = HiveClient.LoadItemJob(task.Id);
      var algorithm = task.ItemTask.Item as IAlgorithm;
      var resultItem = algorithm.Runs.Last().Results[Properties.Settings.Default.ResultName];

      try {
        if (resultItem is DoubleValue) {
          Console.WriteLine(((DoubleValue)resultItem).Value);
        } else if (resultItem is IntValue) {
          Console.WriteLine(((IntValue)resultItem).Value);
        } else throw new InvalidOperationException("Algorithm results does not contain " + Properties.Settings.Default.ResultName + " or is not (IntValue|DoubleValue).");
      } finally {
#if !__NO_DELETE__
        HiveClient.Delete(job);
#endif
      }

      return EXIT_OK;
    }
  }
}