using Dfs.WayneChina.GilbarcoDispenserPayTerminal.MessageEntities;
using Edge.Core.IndustryStandardInterface.Pump;
using Edge.Core.Processor;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Wayne.FDCPOSLibrary;

namespace Dfs.WayneChina.GilbarcoDispenserPayTerminal
{
    public class GilbarcoPayTerminalHandler : IEnumerable<IFdcPumpController>, IDeviceHandler<byte[], CardMessageBase>
    {
        public byte PumpId { get; set; }

        private IContext<byte[], CardMessageBase> _context;

        public event EventHandler<TerminalMessageEventArgs> OnTerminalMessageReceived;

        private GilbarcoPumpHandler pumpHandler;

        public byte Address { get; }

        public byte TerminalAddress { get; }


        private List<GilbarcoPumpHandler> pumpHandlers = new List<GilbarcoPumpHandler>();


        #region Logger

        private static NLog.Logger logger = NLog.LogManager.LoadConfiguration("NLog.config").GetLogger("IPosPlusApp");

        #endregion

        public GilbarcoPayTerminalHandler(int pumpId, int address, int terminalAddress)
        {
            PumpId = Convert.ToByte(pumpId);
            Address = Convert.ToByte(address);
            TerminalAddress = Convert.ToByte(terminalAddress);

            pumpHandler = new GilbarcoPumpHandler(pumpId);
            pumpHandlers = new List<GilbarcoPumpHandler>();
            pumpHandlers.Add(pumpHandler);
        }

        public void Init(IContext<byte[], CardMessageBase> context)
        {
            _context = context;
        }

        public Task Process(IContext<byte[], CardMessageBase> context)
        {
            OnTerminalMessageReceived.Invoke(this, new TerminalMessageEventArgs(PumpId, context.Incoming.Message));

            return Task.CompletedTask;
        }

        public void Write(CardMessageBase cardMessage)
        {
            _context.Outgoing.Write(cardMessage);
        }

        public async Task<CardMessageBase> WriteAsync(CardMessageBase request, 
            Func<CardMessageBase, CardMessageBase, bool> responseCapture,
            int timeout)
        {
            var resp = await _context.Outgoing.WriteAsync(request, responseCapture, timeout);
            return resp;
        }

        public void UpdatePumpState(LogicalDeviceState state)
        {
            logger.Info($"Update pump {PumpId} state, {state}");
            pumpHandler.FirePumpStateChange(state);
        }

        public void UpdateFuelingStatus(FdcTransaction fdcTransaction)
        {
            logger.Info($"Update pump {PumpId} fueling status");
            pumpHandler.FireFuelingStatusChange(fdcTransaction);
        }

        public IEnumerator<IFdcPumpController> GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }

        IEnumerator<IFdcPumpController> IEnumerable<IFdcPumpController>.GetEnumerator()
        {
            return pumpHandlers.GetEnumerator();
        }
    }
}