using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Wayne.Lib.StateEngine;
using Wayne.Lib.StateEngine.Generic;

namespace SinochemInternetPlusApp.States.Shared
{
    public class ShowTrxListFueling : TimeoutState<FuelingPoint>
    {
        private int requestId;

        protected override void Enter(StateEntry stateEntry, ref Transition transition)
        {
            base.Enter(stateEntry, ref transition);
            //Don't need send rquest to BigScreen
            if (!Main.HasBigSreen())
            {
                Main.DebugLogger.Add("No screen configured");

                transition = new Transition(this, TransitionType.Done);
                return;
            }

            if (Main.CurrentEpsTrx != null)
            {
                var validTrx = EpsTransactionQuery.GetValidCarPlateEpsTrxModels(
                    Main.GetAllNozzlesOnThisSide(), ConfigurationValues.AlreadyDoneEpsTrxCountPerDisplay, Main.DebugLogger);

                Main.ActiveTrx = validTrx;

                if (Main.Eps.NozzleMappingGradeName() != null)
                {
                    foreach (var trx in validTrx)
                    {
                        if (trx.trx_status == EpsTrxStatus.BeforeFueling || trx.trx_status == EpsTrxStatus.Fueling)
                        {
                            trx.AvailableNozzleGrade = Main.GetAvailableNozzleInfo();
                        }
                    }
                }

                var text = Main.Eps.CreateDisplayTrxCommand(validTrx, out requestId, 1);
                if (Main.Eps.CarPlateHandler != null)
                {
                    Main.Eps.CarPlateHandler.BroadcastMessageViaFdc(text);

                    if (!Main.ContainsRequestId(requestId))
                        Main.AddRequestId(requestId);
                }
                else
                {
                    transition = new Transition(this, TransitionType.Done);
                }
            }
            else
            {
                transition = new Transition(this, TransitionType.Done);
            }
        }

        protected override void HandleNonTimeoutEvent(StateEngineEvent stateEngineEvent, ref Transition transition)
        {
            if (stateEngineEvent.Type.Equals(EventType.DisplayResponseReceived))
            {
                var e = stateEngineEvent as GenericEvent<DisplayResponseEventArgs>;
                if (e != null && e.EventArgs != null)
                {
                    if (requestId == e.EventArgs.DispResponse.RequestId)
                    {
                        e.Handled = true;

                        if (Main.ContainsRequestId(requestId))
                            Main.RemoveRequestId(requestId);

                        transition = new Transition(this, TransitionType.Done);
                    }
                }
            }
        }

        protected override void Timeout(ref Transition transition)
        {
            transition = new Transition(this, TransitionType.Timeout);
        }

        protected override int TimeoutInterval =>
            TimeoutValues.GetValueInMilliSec(TimeoutValues.FuelingPoint.CarPlateMode_ShowTrxListFueling, 10);
    }
}