/*
 *
 *   Copyright (c) 1999 - 2011 my-Channels Ltd
 *   Copyright (c) 2012 - 2017 Software AG, Darmstadt, Germany and/or Software AG USA Inc., Reston, VA, USA, and/or its subsidiaries and/or its affiliates and/or their licensors.
 *
 *   Use, reproduction, transfer, publication or disclosure is prohibited except as specifically provided for in your License Agreement with Software AG.
 *
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyChannels.Nirvana.Samples
{
    /// <summary>
    /// This is an example of how RX entensions to the Nirvana .Net extended API enables integration with the Reactive Framework from Microsoft 
    /// </summary>
    public class RXQueueConsumer
    {
        // the url of the Nirvana realm
        private string url;
        // the queue to consume from
        private string queue;

        /// <summary>
        /// Pass the rname url of the realm and the queue name
        /// </summary>
        /// <param name="rname">rname of the realm</param>
        /// <param name="rname">qname name of the queue</param>
        public RXQueueConsumer(string rname, string qname)
        {
            url = rname;
            queue = qname;
            start();
        }

        /// <summary>
        /// Initialise the Session object and set up the Observale query
        /// </summary>
        private void start()
        {
            using (var session = new Session(url))
            {
                // Initialize the session
                session.Initialize();
                // Create consumer & query each message
                var consumer = session.Queues.CreateConsumer(queue);
                var query =
                    from e in consumer.ToObservable()
                    select e.Message;
                // Subscribe
                query.Subscribe(ProcessMessage);

                // Wait for input from the console, exit on key entry
                Console.ReadLine();
                Console.WriteLine("Exiting the application");
            }
        }

        /// <summary>
        /// Deal with the message
        /// </summary>
        /// <param name="m">the Message object received</param>
        public void ProcessMessage(Object m)
        {
            Console.WriteLine("Message :" + ((Message)m).Id);
        }

        static void Main(string[] args)
        {
            new RXQueueConsumer(args[0], args[1]);
        }
    }
}