/*********************************************************************/
/*                                                                   */
/*                     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 System.Collections;
using System.Xml.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

// this namespace contains classes for the interaction with the platform.
using AgentService.Platform;
//this namespace contains classes for the configuration management.
using AgentService.Platform.Configuration;
// this namespace contains classes for the interaction with the modules of the plaform.
using AgentService.Platform.Modules;

namespace AuctionDemo
{
	/// <summary>
    /// It wraps fundamental data for the configuration and setup of an agent.
    /// It ease the serialization and deserialization in XML.
	/// </summary>
	[XmlRoot(ElementName="agent")]
	[Serializable]
	public class AgentConfiguration 
	{
		/// <summary>
		/// True is the agent is the auctioneer.
		/// </summary>
		[XmlAttribute(AttributeName="is-auctioneer")]
		public bool IsAuctioneer;

		/// <summary>
		/// Agent name.
		/// </summary>
		[XmlAttribute(AttributeName="name")]
		public string Name;

		/// <summary>
		/// The path of the configuration file
		/// </summary>
		[XmlAttribute(AttributeName="conf-file")]
		public string ConfFile;

		/// <summary>
		/// Deserialization constructor.
		/// </summary>
		public AgentConfiguration()
		{}

	}
	/// <summary>
    /// It wraps the configuration data of the batch.
    /// It eases the serializazion and deserialization in XML.
	/// </summary>
    [XmlRoot("configuration")]
	[Serializable]
	public class BatchConfiguration 
	{
		/// <summary>
		/// Array of the agent which the batch must activate.
		/// </summary>
		[XmlArrayAttribute(ElementName="agents")]
		[XmlArrayItemAttribute(ElementName="agent")]
		public AgentConfiguration[] Agents;

		/// <summary>
		/// The path of the auction demo dll. 
        /// </summary>
		[XmlElement(ElementName="dll-path")]
		public string DLLPath;

		/// <summary>
		/// Deserialization constructor.
		/// </summary>
		public BatchConfiguration() 
		{
		
		}
	}


	/// <summary>
    /// Example driver for the implementation of an auction among agents.
	/// It must implements the IPlatformBatch interface.
	/// </summary>
	public class AuctionBatch: AgentService.Platform.IPlatformBatch 
	{
		/// <summary>
		/// Entry points for the batch
		/// </summary>
		/// <param name="controller">the platform reference</param>
		public void Run(AgentService.Platform.PlatformController controller) 
		{
			throw new InvalidOperationException("Configuration File needed!");
		}
		/// <summary>
		/// Allows the execution of the batch from a configuration file.
		/// </summary>
		/// <param name="controller">the platform reference</param>
		/// <param name="configFile">configuration file for the batch</param>
		public void Run(AgentService.Platform.PlatformController controller, string configFile)
		{

                BatchConfiguration conf = this.ReadConfigFile(configFile);
                if (conf != null)
                {
                    controller.Console.Main.WriteLine("[Batch] - Press [Return] to start...");
                    controller.Console.Input.ReadLine();
                    controller.StartPlatform();

                    if (controller.PlatformState == PlatformState.Ready)
                    {

                        IModuleError error = controller.Modules.UpLoadAssembly(conf.DLLPath, true);
                        if (error == null)
                        {

                            controller.RunPlatform();
                            if (controller.PlatformState == PlatformState.Running)
                            {
                                foreach (AgentConfiguration agent in conf.Agents)
                                {
                                    if (agent.IsAuctioneer == true)
                                    {
                                        controller.Services.CreateAgent("AuctionDemo.Auctioneer", agent.Name, agent.ConfFile, false, "Auctioneer");
                                        // controller.Services.CreateAgent("AuctionDemo.Auctioneer", agent.Name, agent.ConfFile, false);
                                    }
                                    else
                                    {
                                        controller.Services.CreateAgent("AuctionDemo.Bidder", agent.Name, agent.ConfFile, false, "Bidders");
                                        // controller.Services.CreateAgent("AuctionDemo.Bidder", agent.Name, agent.ConfFile, false);
                                    }
                                }
                                controller.Services.ActivateAllAgents();
                                controller.Services.WaitForAllAgents();
                            }
                            else
                            {
                                controller.Console.Error.WriteLine("Some error occurred during platform activation.");
                            }
                        }
                        else
                        {
                            controller.Console.Error.WriteLine("Some error occurred when uploading the assembly: {0} - Details: {1}", error.Description, (error.Exception != null ? error.Exception.Message : "no details"));
                        }

                    }


                    // System.Threading.Thread.Sleep(2000);
                    controller.Console.Main.WriteLine("[Batch] - Press [Return] to shut down..");
                    controller.Console.Input.ReadLine();

                    controller.ShutdownPlatform();

                }

		}
		/// <summary>
        /// Reads the batch configuration, from the file 
        /// passed as a parameter.
		/// </summary>
		/// <param name="configFile">configuration file path</param>
		/// <returns>batch configuration</returns>
		private BatchConfiguration ReadConfigFile(string configFile)
		{
			XmlSerializer serializer = new XmlSerializer(typeof(BatchConfiguration));
			System.IO.TextReader reader = null;
			BatchConfiguration batch = null;
			try
			{
				reader = new System.IO.StreamReader(configFile);
				batch = serializer.Deserialize(reader) as BatchConfiguration;
			}
			catch(Exception ioex)
			{
				Console.WriteLine("Error while reading {0}: {1}",configFile, ioex.Message);
			}
			finally
			{
				if (reader != null)
				{
					reader.Close();
				}
			}
			return batch;
		}
	}

}