/*********************************************************************/
/*                                                                   */
/*                     AgentService Framework                        */
/*                       www.agentservice.it                         */
/*                                                                   */
/* Copyright (C) 2007 l.i.d.o. - DIST, University of Genoa, Italy    */
/* GNU Lesser General Public License                                 */
/*                                                                   */
/* This library is free software; you can redistribute it and/or     */
/* modify it under the terms of the GNU Lesser General Public        */
/* License as published by the Free Software Foundation,             */
/* version 2.1 of the License.                                       */
/*                                                                   */
/* This library 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 */
/* Lesser General Public License for more details.                   */
/*                                                                   */
/* You should have received a copy of the GNU Lesser General Public  */
/* License along with this library; if not, write to the             */
/* Free Software Foundation, Inc., 59 Temple Place - Suite 330,      */
/* Boston, MA  02111-1307, USA.                                      */
/*                                                                   */
/*********************************************************************/
using System;

using AgentService.Agent;
using AgentService.Agent.Knowledge;
using AgentService.Agent.Behaviour;
using AgentService.Agent.Runtime;
using AgentService.Platform.AMS;
using AgentService.Platform.MTS;

namespace AgentService.Platform.DF
{
	/// <summary>
	/// Class DF. Specific DF Agent class
	/// </summary>
	public class DF : AgentService.Agent.Agent
	{	
		private DFAgentDescriptionCollection agentDescriptions;

		internal DFAgentDescriptionCollection AgentDescriptions
		{
			get
			{
				return this.agentDescriptions;
			}
		}

		private IYellowPagesServer ypServer;
		/// <summary>
		/// Gets the White Pages service.
		/// </summary>
		public IYellowPagesServer YellowPages
		{
			get 
			{ 
				return this.ypServer;
			}
		}

		/// <summary>
		/// Reference to the owning platform.
		/// </summary>
		private AgentService.Platform.IPlatform platform;

		/// <summary>
		/// Constructs a DF Agent for the given platform.
		/// </summary>
		/// <param name="platform">Reference to the owning platform</param>
		public DF(AgentService.Platform.IPlatform platform)
		{
			this.platform = platform;
			this.aid = new AID(this.platform.dfName, this.platform.Description.Name);
			this.agentDescriptions = new DFAgentDescriptionCollection();
			this.ypServer = new DefaultYellowPagesServer(this.agentDescriptions, this.aid, this.platform);

           
		}

		#region Override 

		/// <summary>
		/// Loads agent data from its persisted version
		/// </summary>
		/// <param name="agentPersistent">Persisted version of the agent.</param>
		public override void ResumeFrom(AgentPersistent persistent) 
		{
			base.ResumeFrom(persistent);
			
			// resync the internal data with the correponding knowledge
			KnowledgePersistent kp = this.Knowledges[0].GetPersistent();
			this.agentDescriptions = kp.Items[0] as DFAgentDescriptionCollection;
		}
		
		
		#endregion

		/// <summary>
		/// Deregisters an agent with the DF (Yellow Page Service)
		/// </summary>
		/// <param name="aid">agent identifier</param>
		/// <returns>if true the agent is successfully deregistered</returns>
		public bool Deregister(AID aid)
		{
			lock(this.ypServer)
			{
				this.ypServer.Deregister(aid);
				return true;
			}
		}

        

       

		#region CallBacks
		/// <summary>
		/// Handler of messages directed to the AMS
		/// </summary>
		/// <param name="msg"></param>
		public void DispatchMessage(AgentMessage msg) 
		{
			// ...
		}
		#endregion
	}
}