using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Edge.Core.Processor;using Edge.Core.IndustryStandardInterface.Pump;
using Dfs.WayneChina.HengshanTerminalWrapper.MessageEntity.Base;

namespace Dfs.WayneChina.HengshanTerminalWrapper
{
    public class HengshanICTermHandler : IDeviceHandler<byte[], NonCardDispenserMessageTemplateBase>
    {
        #region Fields

        private readonly int pumpId;
        private object syncObj = new object();
        NLog.Logger logger = NLog.LogManager.LoadConfiguration("nlog.config").GetLogger("HengshanPos");

        private Queue<NonCardDispenserMessageTemplateBase> terminalMsgQueue = new Queue<NonCardDispenserMessageTemplateBase>();

        #endregion

        #region Properties

        public IContext<byte[], NonCardDispenserMessageTemplateBase> TerminalContext { get; set; }
        public int AssociatedPumpId => pumpId;
        public event EventHandler<HengshanTerminalMessageEventArgs> OnTerminalMessageReceived;

        #endregion

        #region Construction

        public HengshanICTermHandler(int pumpId)
        {
            this.pumpId = pumpId;
            logger.Debug($"Associated pump id = {pumpId}");
            Console.WriteLine($"Associated pump id = {pumpId}");
        }

        #endregion

        #region IHandler implementations

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

        public Task Process(IContext<byte[], NonCardDispenserMessageTemplateBase> context)
        {
            //if (terminalMsgQueue.Count > 0)
            //{
            //    var message = terminalMsgQueue.Dequeue();
            //    TerminalContext.Outgoing.Write(message);
            //}

            OnTerminalMessageReceived?.Invoke(this, new HengshanTerminalMessageEventArgs(pumpId, context.Incoming.Message));
            return Task.CompletedTask;
        }

        public void Write(NonCardDispenserMessageTemplateBase responseMessage)
        {
            lock (syncObj)
            {
                //terminalMsgQueue.Enqueue(responseMessage);
                TerminalContext.Outgoing.Write(responseMessage);
            }
        }

        #endregion
    }
}