using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using Tango.BL.Entities;
using Tango.Core.Commands;
using Tango.Core.DI;
using Tango.Integration.Operation;
using Tango.PMR.Printing;
using Tango.PPC.Common;
using Tango.PPC.Common.Connection;
using Tango.PPC.Common.Notifications;
using Tango.Settings;
using Tango.SharedUI;

namespace Tango.PPC.Maintenance.Dialogs
{
    public class CleanerDispensingViewVM : DialogViewVM
    {
        private const int JOGGING_TIME_SEC = 10;
        private const int JOGGING_SPEED = 400;

        [TangoInject]
        public IMachineProvider MachineProvider { get; set; }

        [TangoInject]
        private INotificationProvider NotificationProvider { get; set; }

        private bool _isStarted;
        public bool IsStarted
        {
            get { return _isStarted; }
            set { _isStarted = value; RaisePropertyChangedAuto(); }
        }

        private bool _isCompleted;
        public bool IsCompleted
        {
            get { return _isCompleted; }
            set { _isCompleted = value; RaisePropertyChangedAuto(); }
        }

        private bool _isFailed;
        public bool IsFailed
        {
            get { return _isFailed; }
            set { _isFailed = value; RaisePropertyChangedAuto(); }
        }

        private String _status;
        public String Status
        {
            get { return _status; }
            set { _status = value; RaisePropertyChangedAuto(); }
        }

        public RelayCommand StartCommand { get; set; }

        public CleanerDispensingViewVM()
        {
            Status = "Ready...";
            CanClose = true;
            TangoIOC.Default.Inject(this);
            StartCommand = new RelayCommand(Start, () => !IsStarted);
        }

        private async void Start()
        {
            try
            {
                CanClose = false;
                IsStarted = true;
                IsCompleted = false;
                IsFailed = false;
                InvalidateRelayCommands();

                Status = "Dispensing cleaner liquid...";

                var cleanerPack = MachineProvider.Machine.Configuration.NoneEmptyIdsPacks.FirstOrDefault(x => x.LiquidType.Type == BL.Enumerations.LiquidTypes.Cleaner);

                if (cleanerPack == null)
                {
                    throw new InvalidOperationException("'Cleaner' liquid type was not found on the machine configuration.");
                }

                var cleanerIndex = cleanerPack.PackIndex;

                await MachineProvider.MachineOperator.StartDispenserJogging(new PMR.Diagnostics.DispenserJoggingRequest()
                {
                    Direction = PMR.Diagnostics.MotorDirection.Forward,
                    Speed = JOGGING_SPEED,
                    Index = cleanerIndex
                });

                await Task.Delay(TimeSpan.FromSeconds(JOGGING_TIME_SEC));

                await MachineProvider.MachineOperator.StopDispenserJogging(new PMR.Diagnostics.DispenserAbortJoggingRequest()
                {
                    Index = cleanerIndex
                });

                IsCompleted = true;
                Status = "Cleaner liquid dispensing completed.";
            }
            catch (Exception ex)
            {
                Status = "Cleaner liquid dispensing failed.";
                IsFailed = true;
                await NotificationProvider.ShowError($"Error occurred while trying to perform the cleaner liquid dispensing.\n{ex.FlattenMessage()}");
            }
            finally
            {
                CanClose = true;
                IsStarted = false;
            }
        }

        protected override void Cancel()
        {
            if (CanClose)
            {
                base.Cancel();
            }
        }
    }
}