#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;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace HeuristicLab.Clients.Hive.SlaveCore.Tests {
  [TestClass]
  public class SlaveTest {
    private static SlaveCommListener listener;

    // Use ClassInitialize to run code before running the first test in the class
    [ClassInitialize]
    public static void MyClassInitialize(TestContext testContext) {
      PluginLoader.pluginAssemblies.Any();
      ServiceLocator.Instance = new MockServiceLocator();
      /* listener = new SlaveCommListener();
       listener.Open();*/
    }

    [ClassCleanup]
    public static void MyClassCleanup() {
      //listener.Close();
    }


    private List<List<MessageContainer>> CreateMsgsForSingleJob() {
      List<List<MessageContainer>> allMsgs = new List<List<MessageContainer>>();
      //get slave to fetch job
      List<MessageContainer> msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.CalculateJob));
      allMsgs.Add(msg);

      //do nothing
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.ShutdownSlave));
      allMsgs.Add(msg);
      return allMsgs;
    }

    [TestMethod]
    public void TestSingleJob() {
      Job testJob = new Job { Id = Guid.NewGuid(), CoresNeeded = 1, MemoryNeeded = 0 };
      testJob.State = JobState.Waiting;
      List<Job> jobList = new List<Job>();
      jobList.Add(testJob);
      MockJob job = new MockJob(300, false);

      ServiceLocator.Instance.CallHiveService(service => {
        MockHiveService ms = (MockHiveService)service;
        ((MockHiveService)service).Messages = CreateMsgsForSingleJob();
        ((MockHiveService)service).updateJobs(jobList, job);

        HeuristicLab.Clients.Hive.SlaveCore.Core core = new SlaveCore.Core();
        core.Start();

        Assert.AreEqual<int>(1, ms.ResultJobs.Count);
        Assert.AreEqual<Guid>(testJob.Id, ms.ResultJobs[0].Id);
        core.Shutdown();
      });
    }

    private List<List<MessageContainer>> CreateMsgsForShutdownSlaveWhileJobRunning() {
      List<List<MessageContainer>> allMsgs = new List<List<MessageContainer>>();
      //get slave to fetch job
      List<MessageContainer> msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.CalculateJob));
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.ShutdownSlave));
      allMsgs.Add(msg);
      return allMsgs;
    }

    [TestMethod]
    public void TestShutdownSlaveWhileJobRunning() {
      Job testJob = new Job { Id = Guid.NewGuid(), CoresNeeded = 1, MemoryNeeded = 0 };
      testJob.State = JobState.Waiting;
      List<Job> jobList = new List<Job>();
      jobList.Add(testJob);
      MockJob job = new MockJob(10000, false);

      ServiceLocator.Instance.CallHiveService(service => {
        MockHiveService ms = (MockHiveService)service;
        ((MockHiveService)service).Messages = CreateMsgsForShutdownSlaveWhileJobRunning();
        ((MockHiveService)service).updateJobs(jobList, job);


        HeuristicLab.Clients.Hive.SlaveCore.Core core = new SlaveCore.Core();
        core.Start();
      });
    }


    private List<List<MessageContainer>> CreateMsgsForTwoJobs() {
      List<List<MessageContainer>> allMsgs = new List<List<MessageContainer>>();

      //get slave to fetch jobs
      List<MessageContainer> msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.CalculateJob));
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.CalculateJob));
      allMsgs.Add(msg);


      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);
      msg = new List<MessageContainer>();
      allMsgs.Add(msg);

      msg = new List<MessageContainer>();
      msg.Add(new MessageContainer(MessageContainer.MessageType.ShutdownSlave));
      allMsgs.Add(msg);
      return allMsgs;
    }

    [TestMethod]
    public void TestTwoJobs() {
      Job testJob1 = new Job { Id = Guid.NewGuid(), CoresNeeded = 1, MemoryNeeded = 0 };
      testJob1.State = JobState.Waiting;
      Job testJob2 = new Job { Id = Guid.NewGuid(), CoresNeeded = 1, MemoryNeeded = 0 };
      testJob2.State = JobState.Waiting;
      List<Job> jobList = new List<Job>();
      jobList.Add(testJob1);
      jobList.Add(testJob2);
      MockJob job = new MockJob(2000, false);

      ServiceLocator.Instance.CallHiveService(service => {
        MockHiveService ms = (MockHiveService)service;
        ((MockHiveService)service).Messages = CreateMsgsForTwoJobs();
        ((MockHiveService)service).updateJobs(jobList, job);


        HeuristicLab.Clients.Hive.SlaveCore.Core core = new SlaveCore.Core();
        core.Start();
        Assert.AreEqual<int>(2, ms.ResultJobs.Count);
        core.Shutdown();
      });
    }
  }
}