using System;
using System.Collections;
//using System.Diagnostics;
using System.Threading;

using Wayne.Lib;

#if _SINP
using Wayne.ForecourtControl.Nfs;
#endif


namespace Wayne.ForecourtControl.Fusion
{
#if !(_TEVENTARGS)
    class AsyncResponseOperation: IDisposable
    {
        public int requestId;
        public string requestType;
        // TODO: get the response Timeout from as a parameter
        private int responseTimeout = 60000;  // Change to 60 seconds from 30
        public EventHandler<AsyncCompletedEventArgs> requestCompleted;
        public EventHandler<AsyncCompletedEventArgs<long>> requestCompletedLong;
        public EventHandler<AsyncCompletedEventArgs<ITankReadingEx>> requestCompletedITankReading;
        public EventHandler<AsyncCompletedEventArgs<PumpAccumulatorReading>> requestCompletedPumpAccumulatorReading;
        public long resultLong;
        public ITankReadingEx resultITankReading;
        public PumpAccumulatorReading resultPumpAccumulatorReading;
        public object userToken;
        public object src;
        public DateTime requestTime;
        private System.Threading.Timer responseTimer = null;
        public event EventHandler OnResponseTimeout;

        public AsyncResponseOperation(int requestId, string requestType, EventHandler<AsyncCompletedEventArgs> requestCompleted, object userToken, object src)
        {
            this.requestId = requestId;
            this.requestType = requestType;
            this.requestCompleted = requestCompleted;
            this.userToken = userToken;
            this.src = src;
            requestTime = DateTime.Now;
            if (responseTimeout > 0)
                responseTimer = new System.Threading.Timer(new System.Threading.TimerCallback(ResponseTimeout), this, responseTimeout, System.Threading.Timeout.Infinite);
        }

        public AsyncResponseOperation(int requestId, string requestType, EventHandler<AsyncCompletedEventArgs<long>> requestCompleted, object userToken, object src, long resultLong)
        {
            this.requestId = requestId;
            this.requestType = requestType;
            this.requestCompletedLong = requestCompleted;
            this.resultLong = resultLong;
            this.userToken = userToken;
            this.src = src;
            requestTime = DateTime.Now;
            if (responseTimeout > 0)
                responseTimer = new System.Threading.Timer(new System.Threading.TimerCallback(ResponseTimeout), this, responseTimeout, System.Threading.Timeout.Infinite);
        }

        public AsyncResponseOperation(int requestId, string requestType, EventHandler<AsyncCompletedEventArgs<ITankReadingEx>> requestCompleted, object userToken, object src, ITankReadingEx resultITankReading)
        {
            this.requestId = requestId;
            this.requestType = requestType;
            this.requestCompletedITankReading = requestCompleted;
            this.resultITankReading = resultITankReading;
            this.userToken = userToken;
            this.src = src;
            requestTime = DateTime.Now;
            if (responseTimeout > 0)
                responseTimer = new System.Threading.Timer(new System.Threading.TimerCallback(ResponseTimeout), this, responseTimeout, System.Threading.Timeout.Infinite);
        }

        public AsyncResponseOperation(int requestId, string requestType, EventHandler<AsyncCompletedEventArgs<PumpAccumulatorReading>> requestCompleted, object userToken, object src, PumpAccumulatorReading resultPumpAccumulatorReading)
        {
            this.requestId = requestId;
            this.requestType = requestType;
            this.requestCompletedPumpAccumulatorReading = requestCompleted;
            this.resultPumpAccumulatorReading = resultPumpAccumulatorReading;
            this.userToken = userToken;
            this.src = src;
            requestTime = DateTime.Now;
            if (responseTimeout > 0)
                responseTimer = new System.Threading.Timer(new System.Threading.TimerCallback(ResponseTimeout), this, responseTimeout, System.Threading.Timeout.Infinite);
        }

        public void Dispose()
        {
            if (responseTimer != null)
                responseTimer.Dispose();
        }

        private void ResponseTimeout(Object state)
        {
            Trace.WriteLine(string.Format("Response Timeout for requestId={0}, requestType={1}", this.requestId, this.requestType));
            //FG, MAR-15-2011, bug fix #28041; trigger to GetConfiguration again if there's no pump on FM.
            EventArgs<String> ea;
            if (this.requestType == "GetConfiguration")
            {
                ea = new EventArgs<String>("GetConfiguration");
            }
            else
            {
                ea = new EventArgs<string>("");
            }
            if (OnResponseTimeout != null)
                OnResponseTimeout.Invoke(this, ea);
        }
    }
#else
    class AsyncResponseOperation<TEventArgs, TResult> : IDisposable where TEventArgs : EventArgs
    {
        public int requestId;
        public string requestType;
        // TODO: get the response Timeout from as a parameter
        private int responseTimeout = 30000;
        public EventHandler<TEventArgs> requestCompleted;
        public TResult result;
        public object userToken;
        public DateTime requestTime;
        private System.Threading.Timer responseTimer = null;
        public event EventHandler OnResponseTimeout;

        public AsyncResponseOperation(int requestId, string requestType, EventHandler<TEventArgs> _requestCompleted, object userToken, object src, TResult result)
        {
            this.requestId = requestId;
            this.requestType = requestType;
            this.requestCompleted = _requestCompleted;
            this.result = result;
            this.userToken = userToken;
            this.src = src;
            requestTime = DateTime.Now;
            if (responseTimeout > 0)
                responseTimer = new System.Threading.Timer(new System.Threading.TimerCallback(ResponseTimeout), this, responseTimeout, System.Threading.Timeout.Infinite);
        }

        public void Dispose()
        {
            if (responseTimer != null)
                responseTimer.Dispose();
        }

        private void ResponseTimeout(Object state)
        {
            Trace.WriteLine(string.Format("Response Timeout for requestId={0}, requestType={1}", this.requestId, this.requestType));
            if (OnResponseTimeout != null)
                OnResponseTimeout.Invoke(this, null);
        }
    }
#endif

#if !(_TEVENTARGS)
    public class AsyncResponseManager
    {
        public Hashtable AsyncResponseOperationList;
        public event EventHandler OnResponseTimeout;

        public AsyncResponseManager()
        {
            AsyncResponseOperationList = new Hashtable();
        }

        public void OnMessageEnqueuing(object sender, MessageEnqueuedEventArgs e)
        {
            // add the request to the 'waiting for response request list'

            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("init enqueuing message"));

            AsyncResponseOperation asyncResponseOperation = null;
            try
            {
                Monitor.Enter(AsyncResponseOperationList);
                if (e.ResponseRequired)
                {
                    if (e.RequestCompleted != null)
                        asyncResponseOperation = new AsyncResponseOperation(e.RequestId, e.RequestType, e.RequestCompleted, e.UserToken, e.Scr);
                    else if (e.RequestCompletedLong != null)
                        asyncResponseOperation = new AsyncResponseOperation(e.RequestId, e.RequestType, e.RequestCompletedLong, e.UserToken, e.Scr, e.resultLong);
                    else if (e.RequestCompletedITankReading != null)
                        asyncResponseOperation = new AsyncResponseOperation(e.RequestId, e.RequestType, e.RequestCompletedITankReading, e.UserToken, e.Scr, e.resultITankReading);
                    else if (e.RequestCompletedPumpAccumulatorReading != null)
                        asyncResponseOperation = new AsyncResponseOperation(e.RequestId, e.RequestType, e.RequestCompletedPumpAccumulatorReading, e.UserToken, e.Scr, e.resultPumpAccumulatorReading);
                    else
                        asyncResponseOperation = new AsyncResponseOperation(e.RequestId, e.RequestType, (EventHandler<AsyncCompletedEventArgs>)null, null, null);
                    asyncResponseOperation.OnResponseTimeout += new EventHandler(asyncResponseOperation_OnResponseTimeout);
                    AsyncResponseOperationList.Add(e.RequestId, asyncResponseOperation);
                }
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
            finally
            {
                Monitor.Exit(AsyncResponseOperationList);
            }
            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end enqueuing message"));
        }

        private void asyncResponseOperation_OnResponseTimeout(object sender, EventArgs e)
        {
            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("init OnResponseTimeout"));

            if (OnResponseTimeout != null)
                OnResponseTimeout.Invoke(this, e);

            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end OnResponseTimeout"));
        }


        public void SendResponse(int requestId, bool result)
        {
            SendResponse(requestId, result, null);
        }

        public void SendResponse(int requestId, bool result, Object objresult)
        {
            AsyncResponseOperation asyncResponseOperation = null;
            try
            {
                Trace.WriteLine(string.Format("init SendResponse requestId={0}", requestId));
                Monitor.Enter(AsyncResponseOperationList);
                if (AsyncResponseOperationList.ContainsKey(requestId))
                {
                    asyncResponseOperation = (AsyncResponseOperation)(this.AsyncResponseOperationList[requestId]);
                    this.RemoveRequest(requestId);
                }
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse got operation requestId={0}", requestId));
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
            finally
            {
                Monitor.Exit(AsyncResponseOperationList);
            }

            try
            {
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0}", requestId));
                if (asyncResponseOperation != null)
                {
                    if (asyncResponseOperation.requestCompleted != null)
                    {
                        Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0} requestCompleted != null", requestId));
                        asyncResponseOperation.requestCompleted.BeginInvoke(asyncResponseOperation.src, new AsyncCompletedEventArgs(result, asyncResponseOperation.userToken), null, null);
                    }
                    else if (asyncResponseOperation.requestCompletedLong != null)
                    {
                        Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0} requestCompletedLong != null", requestId));
                        //asyncResponseOperation.resultLong = (long)objresult;
                        asyncResponseOperation.requestCompletedLong.BeginInvoke(asyncResponseOperation.src, new AsyncCompletedEventArgs<long>(result, asyncResponseOperation.resultLong, asyncResponseOperation.userToken), null, null);
                    }
                    else if (asyncResponseOperation.requestCompletedITankReading != null)
                    {
                        Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0} requestCompletedITankReading != null", requestId));
                        asyncResponseOperation.resultITankReading = (ITankReadingEx)objresult;
                        asyncResponseOperation.requestCompletedITankReading.BeginInvoke(asyncResponseOperation.src, new AsyncCompletedEventArgs<ITankReadingEx>(result, asyncResponseOperation.resultITankReading, asyncResponseOperation.userToken), null, null);
                    }
                    else if (asyncResponseOperation.requestCompletedPumpAccumulatorReading != null)
                    {
                        Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0} requestCompletedPumpAccumulatorReading != null", requestId));
                        asyncResponseOperation.resultPumpAccumulatorReading = (PumpAccumulatorReading)objresult;
                        asyncResponseOperation.requestCompletedPumpAccumulatorReading.BeginInvoke(asyncResponseOperation.src, new AsyncCompletedEventArgs<PumpAccumulatorReading>(result, asyncResponseOperation.resultPumpAccumulatorReading, asyncResponseOperation.userToken), null, null);
                    }
                }
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end SendResponse requestId={0}", requestId));
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
        }

        private void RemoveRequest(int requestId)
        {
            try
            {
                if (this.AsyncResponseOperationList.ContainsKey(requestId))
                {
                    AsyncResponseOperation asyncResponseOperation = (AsyncResponseOperation)(this.AsyncResponseOperationList[requestId]);
                    asyncResponseOperation.Dispose();
                    AsyncResponseOperationList.Remove(requestId);
                }
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
        }
    }
#else
    public class AsyncResponseManager<TEventArgs, TResult> where TEventArgs : EventArgs
    {
        public Hashtable AsyncResponseOperationList;
        public event EventHandler OnResponseTimeout;

        public AsyncResponseManager()
        {
            AsyncResponseOperationList = new Hashtable();
        }

        public void ifsfmessages_OnMessageEnqueuing(object sender, MessageEnqueuedEventArgs<TEventArgs, TResult> e)
        {
            // add the request to the 'waiting for response request list'

            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("init enqueuing message"));

            AsyncResponseOperation<TEventArgs, TResult> asyncResponseOperation = null;
            try
            {
                Monitor.Enter(AsyncResponseOperationList);
                if (e.ResponseRequired)
                {
                    if (e.RequestCompleted != null)
                        asyncResponseOperation = new AsyncResponseOperation<TEventArgs, TResult>(e.RequestId, e.RequestType, e.RequestCompleted, e.UserToken, e.result);
                    else
                        asyncResponseOperation = new AsyncResponseOperation<TEventArgs, TResult>(e.RequestId, e.RequestType, (EventHandler<TEventArgs>)null, null);
                    asyncResponseOperation.OnResponseTimeout += new EventHandler(asyncResponseOperation_OnResponseTimeout);
                    AsyncResponseOperationList.Add(e.RequestId, asyncResponseOperation);
                }
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
            finally
            {
                Monitor.Exit(AsyncResponseOperationList);
            }
            Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end enqueuing message"));
        }

        private void asyncResponseOperation_OnResponseTimeout(object sender, EventArgs e)
        {
            Trace.Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("init OnResponseTimeout"));

            if (OnResponseTimeout != null)
                OnResponseTimeout.Invoke(this, null);

            Trace.Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end OnResponseTimeout"));
        }

        public void SendResponse(int requestId, bool result)
        {
            SendResponse(requestId, result, null);
        }

        public void SendResponse(int requestId, bool result, Object objresult)
        {
            AsyncResponseOperation<TEventArgs, TResult> asyncResponseOperation = null;
            try
            {
                Trace.WriteLine(string.Format("init SendResponse requestId={0}", requestId));
                Monitor.Enter(AsyncResponseOperationList);
                if (AsyncResponseOperationList.ContainsKey(requestId))
                {
                    asyncResponseOperation = (AsyncResponseOperation<TEventArgs, TResult>)(this.AsyncResponseOperationList[requestId]);
                    this.RemoveRequest(requestId);
                }
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse got operation requestId={0}", requestId));
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
            finally
            {
                Monitor.Exit(AsyncResponseOperationList);
            }

            try
            {
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("SendResponse requestId={0}", requestId));
                if (asyncResponseOperation != null)
                {
                    if (asyncResponseOperation.requestCompleted != null)
                        asyncResponseOperation.requestCompleted.BeginInvoke(asyncResponseOperation.src, new TEventArgs(result, asyncResponseOperation.userToken), null, null);
                        asyncResponseOperation.requestCompleted.BeginInvoke(this, new AsyncCompletedEventArgs<TEventArgs, TResult>(result, t, asyncResponseOperation.userToken), null, null);
                }
                Trace.WriteLineIf(Trace.CheckTraceLevel(3), string.Format("end SendResponse requestId={0}", requestId));
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
        }

        private void RemoveRequest(int requestId)
        {
            try
            {
                if (this.AsyncResponseOperationList.ContainsKey(requestId))
                {
                    AsyncResponseOperation<T> asyncResponseOperation = (AsyncResponseOperation<T>)(this.AsyncResponseOperationList[requestId]);
                    asyncResponseOperation.Dispose();
                    AsyncResponseOperationList.Remove(requestId);
                }
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Exception! " + ex.Message + " - " + ex.StackTrace);
            }
        }

    }
#endif
}