#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2008 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 HeuristicLab.Hive.Contracts;
using HeuristicLab.Hive.Contracts.Interfaces;
using HeuristicLab.Hive.Slave.Communication.Properties;

namespace HeuristicLab.Hive.Slave.Communication {
  internal class ServiceLocator {
    private static ServiceLocator instance = null;
    private WcfServicePool<SlaveFacade.ISlaveFacade> slaveFacadePool = null;
    private WcfServicePool<SlaveFacade.ISlaveFacade> streamedSlaveFacadePool = null;

    internal static ServiceLocator Instance {
      get {
        if (instance == null) {
          instance = new ServiceLocator();
        }
        return instance;
      }
    }

    private string hostAddress;
    internal string HostAddress {
      get {
        return hostAddress;
      }
      set {
        if (hostAddress != value) {
          hostAddress = value;
          if (slaveFacadePool != null)
            slaveFacadePool.HostAddress = value;
          if (streamedSlaveFacadePool != null)
            streamedSlaveFacadePool.HostAddress = value;
        }
      }
    }

    public ServiceLocator() {
      Settings.Default.SettingChanging += new System.Configuration.SettingChangingEventHandler(Default_SettingChanging);
    }

    void Default_SettingChanging(object sender, System.Configuration.SettingChangingEventArgs e) {
      if (slaveFacadePool != null) {
        slaveFacadePool.Username = Settings.Default.HiveUsername;
        slaveFacadePool.Password = Settings.Default.HivePassword;
      }
      if (streamedSlaveFacadePool != null) {
        streamedSlaveFacadePool.Username = Settings.Default.HiveUsername;
        streamedSlaveFacadePool.Password = Settings.Default.HivePassword;
      }
    }

    internal WcfServicePool<SlaveFacade.ISlaveFacade> SlaveFacadePool {
      get {
        if (slaveFacadePool == null) {
          slaveFacadePool = new WcfServicePool<SlaveFacade.ISlaveFacade>(HostAddress, Settings.Default.HiveUsername, Settings.Default.HivePassword, "SlaveHttpEndpoint");
        }
        return slaveFacadePool;
      }
    }

    internal WcfServicePool<SlaveFacade.ISlaveFacade> StreamedSlaveFacadePool {
      get {
        if (streamedSlaveFacadePool == null) {
          streamedSlaveFacadePool = new WcfServicePool<SlaveFacade.ISlaveFacade>(HostAddress, Settings.Default.HiveUsername, Settings.Default.HivePassword, "SlaveTcpStreamedEndpoint");
        }
        return streamedSlaveFacadePool;
      }
    }
  }
}