using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.Entities;
using Tango.BL.Enumerations;
using Tango.ColorConversion;
using Tango.Core;
using Tango.Core.DI;
using Tango.PPC.Common.Build;
using Tango.PPC.Common.Notifications;

namespace Tango.PPC.Jobs.Models
{
    public class JobModel : ExtendedObject
    {
        [TangoInject]
        public IBuildProvider BuildProvider { get; set; }

        private bool _preventChange;

        #region Properties

        public String Guid { get; set; }

        public int ID { get; set; }

        [JsonIgnore]
        public Job Job { get; set; }

        protected String _name;

        public String Name
        {
            get
            {
                return _name;
            }

            set
            {
                if (_name != value)
                {
                    _name = value;
                    RaisePropertyChangedAuto();
                }
            }
        }
        protected DateTime _creationdate;

        /// <summary>
        /// Gets or sets the JobModel creation date.
        /// </summary>
        [JsonIgnore]
        public DateTime CreationDate
        {
            get
            {
                return _creationdate;
            }
            set
            {
                if (_creationdate != value)
                {
                    _creationdate = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        private double _lastLength;
        public double Length
        {
            get
            {
                _lastLength = GetLength();
                return _lastLength;
            }
        }

        private double GetLength()
        {
            if (Segments != null)
            {
                if ((EnableInterSegment && IsAllSegmentsPerSpool))
                    return GroupingSegments.Count > 0 ? (GroupingSegments.Sum(x => x.LengthWithInterSegment)) : 0;
                return GroupingSegments.Sum(x => x.FullLength);
                //return Segments.Sum(x => x.LengthWithInterSegment);
                // return Segments.Sum(x => x.LengthWithFactor) + ((EnableInterSegment && IsAllSegmentsPerSpool) ? (InterSegmentLength * (Segments.Count > 0 ? Segments.Count - 1 : Segments.Count)) : 0);
            }
            else
            {
                return 0;
            }
        }

        protected Double _lengthpercentagefactor;

        /// <summary>
        /// Gets or sets the JobModel length percentage factor.
        /// </summary>

        public Double LengthPercentageFactor
        {
            get
            {
                return _lengthpercentagefactor;
            }

            set
            {
                if (_lengthpercentagefactor != value)
                {
                    _lengthpercentagefactor = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        protected Int32 _numberofunits;
        /// <summary>
        /// Gets or sets the JobModel number of units.
        /// </summary>
        public Int32 NumberOfUnits
        {
            get
            {
                return _numberofunits;
            }

            set
            {
                if (_numberofunits != value)
                {
                    _numberofunits = value;
                    RaisePropertyChangedAuto();
                    OnUpdateLengthhWeight();
                    RaisePropertyChanged(nameof(GetEstimatedDuration));
                    RaisePropertyChanged(nameof(SpoolCopies));
                }
            }
        }

        public double SpoolCopies
        {
            get
            {
                if (BuildProvider.MachineType == MachineTypes.Eureka)
                {
                    return NumberOfUnits;
                }
                else
                {
                    return (double)NumberOfUnits / (double)NumberSpools;
                }
            }

        }

        protected Double _intersegmentlength;

        /// <summary>
        /// Gets or sets the JobModel inter segment length.
        /// </summary>
        public Double InterSegmentLength
        {
            get
            {
                return _intersegmentlength;
            }

            set
            {
                if (_intersegmentlength != value)
                {
                    _intersegmentlength = value;
                    RaisePropertyChangedAuto();
                    OnInterSegmentlengthChanged();
                }
            }
        }

        protected SpoolsDistributions _spoolsdistribution;
        public bool IsAllSegmentsPerSpool
        {
            get { return ((SpoolsDistributions)_spoolsdistribution) == SpoolsDistributions.AllSegments; }
            set
            {
                _spoolsdistribution = value ? SpoolsDistributions.AllSegments : SpoolsDistributions.SingleSegment;
                RaisePropertyChangedAuto();
            }
        }
        /// <summary>
        /// Gets the total job segments length multiplied by number of units if it is an embroidery job.
        /// </summary>
        [JsonIgnore]
        public double LengthIncludingNumberOfUnits
        {
            get
            {
                //JsonConvert.SerializeObject(this,Formatting.Indented);
                _lastLength = GetLength();

                if (BuildProvider.MachineType == MachineTypes.Eureka)
                {
                    var l = _lastLength * Math.Max(NumberOfUnits, 1);

                    if (EnableInterSegment && NumberOfUnits > 1)
                    {
                        l += ((NumberOfUnits - 1) * InterSegmentLength);
                    }

                    return l;
                }
                else
                {
                    return (_lastLength * Copies) / (double)_numberSpools;
                }
            }
        }

        [JsonIgnore]
        public double LengthIncludingNumberOfUnitsAndSpools
        {
            get
            {
                if (BuildProvider.MachineType == MachineTypes.Eureka)
                {
                    if (NumberSpools >= 4)
                    {
                        return LengthIncludingNumberOfUnits * NumberSpools;
                    }

                    return LengthIncludingNumberOfUnits;
                }
                else
                {
                    return _lastLength * Copies;
                }
            }
        }

        protected Rml _rml;

        /// <summary>
        /// Gets or sets the JobModel rml.
        /// </summary>
        [JsonIgnore]
        public virtual Rml Rml
        {
            get
            {
                return _rml;
            }

            set
            {
                if (_rml != value)
                {
                    _rml = value;
                    RaisePropertyChangedAuto();
                    RaisePropertyChanged(nameof(GetEstimatedDuration));
                    RaisePropertyChanged(nameof(GramPerLength));
                    OnUpdateLengthhWeight();
                }
            }
        }

        public string RmlGuid
        {
            get
            {
                return Rml.Guid;
            }
        }
        protected ColorSpace _colorspace;

        /// <summary>
        /// Gets or sets the JobModel color spaces.
        /// </summary>
        [JsonIgnore]
        public virtual ColorSpace ColorSpace
        {
            get
            {
                return _colorspace;
            }
            set
            {
                if (_colorspace != value)
                {
                    _colorspace = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        /// <summary>
        /// Gets or sets the available color spaces.
        /// </summary>
        [JsonIgnore]
        public List<ColorSpace> ColorSpacesList { get; set; }

        protected Customer _customer;

        /// <summary>
        /// Gets or sets the JobModel customer.
        /// </summary>
        [JsonIgnore]
        public virtual Customer Customer
        {
            get
            {
                return _customer;
            }
            set
            {
                if (_customer != value)
                {
                    _customer = value;
                    RaisePropertyChangedAuto();
                }
            }
        }
        protected Machine _machine;

        /// <summary>
        /// Gets or sets the JobModel machine.
        /// </summary>
        [JsonIgnore]
        public virtual Machine Machine
        {
            get
            {
                return _machine;
            }

            set
            {
                if (_machine != value)
                {
                    _machine = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        protected SpoolType _spooltype;

        /// <summary>
        /// Gets or sets the JobModel spool types.
        /// </summary>
        [JsonIgnore]
        public virtual SpoolType SpoolType
        {
            get
            {
                return _spooltype;
            }

            set
            {
                if (_spooltype != value)
                {
                    _spooltype = value;
                    RaisePropertyChangedAuto();

                }
            }
        }

        private string _spoolTypeName;

        public string SpoolTypeName
        {
            get { return _spoolTypeName; }
            set
            {
                _spoolTypeName = value;
                RaisePropertyChangedAuto();
            }
        }


        public string SpoolGuid
        {
            get { return SpoolType.Guid; }
        }

        private int _numberSpools;
        [JsonIgnore]
        public int NumberSpools
        {
            get { return Math.Max(_numberSpools, 1); }
            set
            {
                if (_numberSpools != value)
                {
                    _numberSpools = Math.Max(value, 1);
                    RaisePropertyChangedAuto();
                    OnNumberOfSpoolsChanged();
                    OnUpdateLengthhWeight();
                }
            }
        }

        protected Int32 _copies;
        [JsonIgnore]
        public Int32 Copies //_numberOfUnitsMultipliedBySpools
        {
            get
            {
                return _copies;
            }

            set
            {
                if (_copies != value)
                {
                    if (BuildProvider.MachineType == MachineTypes.Eureka)
                    {
                        if (NumberSpools >= 4)
                        {
                            if (value < NumberSpools)
                                _copies = NumberSpools;
                            else
                            {
                                int coeff = (int)(value + NumberSpools - 1) / NumberSpools;
                                _copies = coeff * NumberSpools;
                            }
                            NumberOfUnits = (int)_copies / NumberSpools;
                            OnUpdateLengthhWeight();
                        }
                        else
                            _copies = value;
                    }
                    else
                    {
                        _copies = value;
                        NumberOfUnits = value;
                    }
                    RaisePropertyChangedAuto();
                }
            }
        }

        protected User _user;

        /// <summary>
        /// Gets or sets the JobModel user.
        /// </summary>
        [JsonIgnore]
        public virtual User User
        {
            get
            {
                return _user;
            }

            set
            {
                if (_user != value)
                {
                    _user = value;
                    RaisePropertyChangedAuto();
                }
            }
        }
        public JobTypes JobType { get; set; }

        protected SynchronizedObservableCollection<SegmentModel> _segments;

        /// <summary>
        /// Gets or sets the JobModel segments.
        /// </summary>
        [JsonIgnore]
        public SynchronizedObservableCollection<SegmentModel> Segments
        {
            get
            {
                return _segments;
            }
            set
            {
                if (_segments != value)
                {
                    _segments = value;
                    RaisePropertyChangedAuto();
                    OnSegmentsChanged();
                }
            }
        }

        protected SynchronizedObservableCollection<SegmentsGroupModel> _segmentsGroups;

        /// <summary>
        /// Gets or sets the JobModel segments.
        /// </summary>
        [JsonIgnore]
        public SynchronizedObservableCollection<SegmentsGroupModel> SegmentsGroups
        {
            get
            {
                return _segmentsGroups;
            }
            set
            {
                if (_segmentsGroups != value)
                {
                    _segmentsGroups = value;
                    RaisePropertyChangedAuto();

                }
            }
        }

        private bool _enableintersegment;
        public bool EnableInterSegment
        {
            get
            {
                return _enableintersegment;
            }

            set
            {
                if (_enableintersegment != value)
                {
                    _enableintersegment = value;
                    RaisePropertyChangedAuto();
                    OnEnableInterSegmentChanged();
                }
            }
        }

        private ObservableCollection<SegmentModel> _effectiveSegments;
        [JsonIgnore]
        public ObservableCollection<SegmentModel> EffectiveSegments
        {
            get
            {
                return _effectiveSegments;
            }
        }

        protected SynchronizedObservableCollection<ISegmentModel> _groupingSegments;
        /// <summary>
        /// Gets or sets the display segments.
        /// </summary>
        [JsonIgnore]
        public SynchronizedObservableCollection<ISegmentModel> GroupingSegments
        {
            get
            {
                return _groupingSegments;
            }
            set
            {
                if (_groupingSegments != value)
                {
                    _groupingSegments = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        private bool _selectAllSegments;
        [JsonIgnore]
        public bool SelectAllSegments
        {
            get { return _selectAllSegments; }
            set
            {
                _selectAllSegments = value;
                OnSelectAllChanged();
                RaisePropertyChangedAuto();
            }
        }

        [JsonIgnore]
        public bool HasSelectedItems
        {
            get
            {
                return GroupingSegments.Any(x => x.IsSelected);
            }
        }

        [JsonIgnore]
        public bool IsReverseEnable
        {
            get
            {
                var items = GroupingSegments.Where(x => x.IsSelected).ToList();

                foreach (var item in items)
                {
                    if (item is SegmentModel seg)
                    {
                        if (seg.IsGradient)
                            return true;
                    }
                    else if (item is SegmentsGroupModel group)
                    {
                        foreach (var segment in group.Segments)
                        {
                            if (segment.IsGradient)
                            {
                                return true;
                            }
                        }
                    }
                }
                return false;
            }
        }

        private List<ISegmentModel> _segmentsToCopy;
        [JsonIgnore]
        public List<ISegmentModel> SegmentsToCopy
        {
            get
            {
                return _segmentsToCopy;
            }
            set
            {
                if (_segmentsToCopy != value)
                {
                    _segmentsToCopy = value;
                    RaisePropertyChanged(nameof(HasSegmentsToCopy));
                }
            }
        }

        [JsonIgnore]
        public int IndexToPasteCopySegments { get; set; }

        [JsonIgnore]
        public bool HasSegmentsToCopy
        {
            get
            {
                return SegmentsToCopy.Count > 0;
            }
        }


        ProcessParametersTable _processParametersTable;
        [JsonIgnore]
        public ProcessParametersTable ProcessParametersTable
        {
            get
            {
                InitializeProcessParameters();
                return _processParametersTable;
            }
            set
            {
                if (value != _processParametersTable)
                {
                    _processParametersTable = value;
                    RaisePropertyChangedAuto();
                }
            }
        }

        private void InitializeProcessParameters()
        {
            _processParametersTable = GetRecommendedProcessParameters();
        }

        [JsonIgnore]
        public TimeSpan GetEstimatedDuration
        {
            get
            {
                if (Rml == null || Rml.GetActiveProcessGroup().ProcessParametersTables == null)
                    return TimeSpan.Zero;
                var processParameters = ProcessParametersTable;
                if (processParameters == null)
                    processParameters = Rml.GetActiveProcessGroup().ProcessParametersTables.FirstOrDefault();

                if (processParameters.DyeingSpeed != 0)
                {
                    return TimeSpan.FromSeconds((LengthIncludingNumberOfUnits + processParameters.DryerBufferLengthMeters) / (processParameters.DyeingSpeed / 100d));
                }
                return TimeSpan.Zero;
            }
        }

        [JsonIgnore]
        public int LastGroupID
        {
            get
            {
                var groups = GroupingSegments.ToList().OfType<SegmentsGroupModel>().ToList();
                return groups.Count() == 0 ? 0 : groups.Max(x => x.SegmentIndex);
            }
        }

        /// <summary>
        /// Gets the ordered segments with groups.
        /// </summary>
        public List<ISegmentModel> OrderedSegmentsWithGroups
        {
            get
            {
                if (Segments == null)
                    return null;
                List<ISegmentModel> orderedSegmentsWithGroups = new List<ISegmentModel>();

                orderedSegmentsWithGroups.AddRange(Segments.Where(x => x.SegmentsGroupModel == null));
                orderedSegmentsWithGroups.AddRange(SegmentsGroups);
                return orderedSegmentsWithGroups.OrderBy(x => x.SegmentIndex).ToList();
            }
        }




        [JsonIgnore]
        public bool IsEureka { get; set; }

        [JsonIgnore]
        public double GramPerLength
        {
            get
            {
                if (Rml != null)
                    return Rml.GetGramPer1000mLength;
                return 0d;
            }
        }

        [JsonIgnore]
        public double WeightIncludingNumberOfUnits
        {
            get
            {
                if (Rml == null)
                    return 0;

                var gramPerlength = Rml.GetGramPer1000mLength;
                var weight = (LengthIncludingNumberOfUnits * gramPerlength) / (1000);//(g)
                return weight;
            }
        }

        [JsonIgnore]
        public double WeightIncludingNumberOfUnitsAndSpools
        {
            get
            {
                if (NumberSpools >= 4)
                {
                    return WeightIncludingNumberOfUnits * NumberSpools;
                }

                return WeightIncludingNumberOfUnits;
            }
        }

        #endregion

        #region constructors

        public JobModel(List<ColorSpace> list, bool isEureka)
        {
            TangoIOC.Default.Inject(this);
            ColorSpacesList = list;
            _segments = new SynchronizedObservableCollection<SegmentModel>();
            _segmentsGroups = new SynchronizedObservableCollection<SegmentsGroupModel>();
            _groupingSegments = new SynchronizedObservableCollection<ISegmentModel>();
            SegmentsToCopy = new List<ISegmentModel>();
            _effectiveSegments = new ObservableCollection<SegmentModel>();

            Segments.CollectionChanged -= Segments_CollectionChanged;
            Segments.CollectionChanged += Segments_CollectionChanged;

            GroupingSegments.CollectionChanged -= SegmentsGroup_CollectionChanged;
            GroupingSegments.CollectionChanged += SegmentsGroup_CollectionChanged;
            SelectAllSegments = false;
            //if not eurika
            if (!isEureka)
                NumberOfUnits = 1;
            else
                NumberOfUnits = 4;
            IsEureka = isEureka;
        }

        #endregion

        #region modifications

        private void OnSegmentsChanged()
        {
            LoadGroupingSegments();
        }

        /// <summary>
        /// Loads the grouping segments.
        /// </summary>
        public void LoadGroupingSegments()
        {
            _groupingSegments.Clear();
            //List<ISegmentModel> segmentsWithGroups = new List<ISegmentModel>();

            //segmentsWithGroups.AddRange(Segments.Where(x => x.SegmentsGroupModel == null));
            //segmentsWithGroups.AddRange(SegmentsGroups);
            OrderedSegmentsWithGroups.ForEach(x => _groupingSegments.Add(x));

            if (_groupingSegments.Count > 0)
                _groupingSegments.Last().IsLast = true;
            RaisePropertyChanged(nameof(GroupingSegments));
        }

        /// <summary>
        /// Arranges the segment indixes in groups.
        /// </summary>
        public void ArrangeSegmentIndixesInGroups()
        {
            foreach (var group in SegmentsGroups)
            {
                int index = 1;
                foreach (var segm in Segments)
                {
                    segm.SegmentIndex = index;
                    index++;
                }
            }
        }

        /// <summary>
        /// Arranges the segments indixes.
        /// </summary>
        public void ArrangeSegmentsIndixes()
        {
            int index = 1;
            int count = GroupingSegments.Count();
            ArrangeSegmentIndixesInGroups();
            foreach (var segment in GroupingSegments)
            {
                segment.IsLast = (index == count) ? true : false;
                segment.SegmentIndex = index++;
            }
            UpdateEffectiveSegments();
        }

        /// <summary>
        /// Creates the inter segment.
        /// </summary>
        /// <param name="length">The length.</param>
        /// <returns></returns>
        public SegmentModel CreateInterSegment(double length)
        {
            SegmentModel segment = new SegmentModel()
            {
                IsInterSegment = true,
                Length = length,
                Name = "Inter Segment",
                Job = this,
            };
            segment.BrushStops.Add(new BrushStopModel(segment, null)
            {
                ColorSpace = ColorSpaces.RGB,
                Color = System.Windows.Media.Colors.White,
                LastChangedColorSpace = ColorSpaces.RGB

            });
            return segment;
        }

        /// <summary>
        /// Adds the new segment.
        /// </summary>
        /// <param name="length">The length.</param>
        /// <param name="segmentIndex">Index of the segment.</param>
        /// <returns></returns>
        public SegmentModel AddNewSegment(double length, Int32 segmentIndex)
        {
            SegmentModel segment = new SegmentModel();
            segment.Name = "Standard Segment";
            segment.SegmentIndex = segmentIndex + 1;
            segment.Length = length;

            segment.Job = this;
            segment.EnableInterSegment = InterSegmentLength > 0;

            Segments.Add(segment);
            if (segmentIndex < GroupingSegments.Count())
            {
                GroupingSegments.Insert(segmentIndex, segment);
            }
            else
                GroupingSegments.Add(segment);
            ArrangeSegmentsIndixes();

            return segment;
        }

        protected ProcessParametersTable GetRecommendedProcessParameters()
        {
            try
            {
                IColorConverter _converter = new DefaultColorConverter();
                bool useLightInks = true;
                if (OrderedSegmentsWithGroups.Count > 1 && !EnableInterSegment)
                    useLightInks = false;
                List<BrushStop> stops = new List<BrushStop>();
                foreach (var segment in OrderedSegmentsWithGroups)
                {
                    if (segment is SegmentModel innerSegment)
                    {
                        foreach (var stop in innerSegment.BrushStops.OrderBy(x => x.StopIndex).ToList())
                        {
                            if (stop.BrushStop != null)
                            {
                                BrushStop bs = stop.CreateBrushStop();
                                stops.Add(bs);
                            }
                        }
                    }
                    else if (segment is SegmentsGroupModel group)
                    {
                        foreach (var segm_group in group.Segments.OrderBy(x => x.SegmentIndex))
                        {
                            foreach (var stop in segm_group.BrushStops.OrderBy(x => x.StopIndex).ToList())
                            {
                                if (stop.BrushStop != null)
                                {
                                    BrushStop bs = stop.CreateBrushStop();
                                    stops.Add(bs);
                                }
                            }
                        }
                    }
                }

                if (stops.Count > 0)
                {
                    return _converter.GetRecommendedProcessParameters(Rml, Machine, stops, Rml.GetActiveProcessGroup(), useLightInks);
                }
                else
                {
                    return Rml.GetActiveProcessGroup().ProcessParametersTables.FirstOrDefault();
                }
            }
            catch (Exception ex)
            {
                LogManager.Log(ex, "Error calculating recommended process parameters.");
                return null;
            }
        }
        #endregion

        #region changes

        private void OnEnableInterSegmentChanged()
        {
            if (EnableInterSegment == false && InterSegmentLength > 0)
            {
                _intersegmentlength = 0;
                RaisePropertyChanged(nameof(InterSegmentLength));
            }
            _groupingSegments.ToList().ForEach(x => x.EnableInterSegment = EnableInterSegment);
            OnLengthChanged();
            UpdateEffectiveSegments();
        }

        private void UpdateEffectiveSegments()
        {
            if (EnableInterSegment && IsAllSegmentsPerSpool)
            {
                int max = GroupingSegments.Count > 0 ? GroupingSegments.Max(x => x.SegmentIndex) : 0;

                ObservableCollection<SegmentModel> effectiveSegments = new ObservableCollection<SegmentModel>();

                foreach (var s in GroupingSegments.OrderBy(x => x.SegmentIndex))
                {
                    if (s is SegmentModel)
                    {
                        SegmentModel segment = s as SegmentModel;
                        effectiveSegments.Add(segment);
                        if (segment.SegmentIndex != max && segment.EnableInterSegment)
                        {
                            effectiveSegments.Add(CreateInterSegment(InterSegmentLength));
                        }
                    }
                    else if (s is SegmentsGroupModel)
                    {
                        SegmentsGroupModel segmentsGroup = s as SegmentsGroupModel;
                        List<SegmentModel> segments = segmentsGroup.Segments.ToList();
                        for (int repeats = 0; repeats < segmentsGroup.Repeats; ++repeats)
                        {
                            for (int i = 0; i < segments.Count; ++i)
                            {
                                //if (repeats > 0)
                                //{
                                //    effectiveSegments.Add(segments[i].Clone());
                                //}
                                //else
                                effectiveSegments.Add(segments[i]);
                                if (EnableInterSegment && !(repeats == (segmentsGroup.Repeats - 1) && i == (segments.Count - 1)))
                                {
                                    effectiveSegments.Add(CreateInterSegment(InterSegmentLength));
                                }
                            }
                        }
                        if (EnableInterSegment && segmentsGroup.SegmentIndex != max)
                        {
                            effectiveSegments.Add(CreateInterSegment(InterSegmentLength));
                        }
                    }
                }
                _effectiveSegments = effectiveSegments;
            }
            else
            {
                ObservableCollection<SegmentModel> effectiveSegments = new ObservableCollection<SegmentModel>();
                foreach (var s in GroupingSegments.OrderBy(x => x.SegmentIndex))
                {
                    if (s is SegmentModel)
                    {
                        SegmentModel segment = s as SegmentModel;
                        effectiveSegments.Add(segment);
                    }
                    else if (s is SegmentsGroupModel)
                    {
                        SegmentsGroupModel segmentsGroup = s as SegmentsGroupModel;
                        List<SegmentModel> segments = segmentsGroup.Segments.ToList();
                        for (int repeats = 0; repeats < segmentsGroup.Repeats; repeats++)
                        {
                            for (int i = 0; i < segments.Count; i++)
                            {
                                //if (repeats > 0)
                                //{
                                //    effectiveSegments.Add(segments[i].Clone());
                                //}
                                //else
                                effectiveSegments.Add(segments[i]);
                            }
                        }
                    }
                }
                _effectiveSegments = effectiveSegments;
            }
            RaisePropertyChanged(nameof(EffectiveSegments));
        }

        /// <summary>
        /// Handles the CollectionChanged event of the Segments collection.
        /// </summary>
        private void Segments_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            foreach (var segment in Segments.ToList())
            {
                segment.PropertyChanged -= Segment_PropertyChanged;
                segment.PropertyChanged += Segment_PropertyChanged;
            }

            OnLengthChanged();
            //UpdateEffectiveSegments();
        }

        /// <summary>
        /// Handles the PropertyChanged event of all job segments.
        /// </summary>
        private void Segment_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            if (e.PropertyName == nameof(SegmentModel.Length))
            {
                OnLengthChanged();
                UpdateEffectiveSegments();
            }
            else if (e.PropertyName == nameof(SegmentModel.SegmentIndex))
            {
                //UpdateEffectiveSegments();
            }
            else if (e.PropertyName == nameof(SegmentModel.EnableInterSegment))
            {
                OnLengthChanged();
                UpdateEffectiveSegments();
            }
            else if (e.PropertyName == nameof(SegmentModel.IsSelected))
            {
                if (_preventChange) return;
                if (Segments.ToList().TrueForAll(x => x.IsSelected))
                {
                    _selectAllSegments = true;
                }
                else
                {
                    _selectAllSegments = false;
                }
                RaisePropertyChanged(nameof(SelectAllSegments));
                UpdateSelectedButtons();
            }
        }

        private void SegmentsGroup_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            foreach (var group in GroupingSegments.ToList())
            {
                if (group is SegmentsGroupModel)
                {
                    (group as SegmentsGroupModel).PropertyChanged -= SegmentsGroup_PropertyChanged;
                    (group as SegmentsGroupModel).PropertyChanged += SegmentsGroup_PropertyChanged;
                }
            }
            OnLengthChanged();
            UpdateEffectiveSegments();
        }

        private void SegmentsGroup_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            if (e.PropertyName == nameof(SegmentsGroupModel.Repeats))
            {
                OnLengthChanged();
                UpdateEffectiveSegments();
            }
            else if (e.PropertyName == nameof(SegmentModel.IsSelected))
            {
                if (_preventChange) return;
                if (GroupingSegments.ToList().TrueForAll(x => x.IsSelected))
                {
                    _selectAllSegments = true;
                }
                else
                {
                    _selectAllSegments = false;
                }
                RaisePropertyChanged(nameof(SelectAllSegments));
                UpdateSelectedButtons();
            }
        }

        private void UpdateSelectedButtons()
        {
            RaisePropertyChanged(nameof(HasSelectedItems));
            RaisePropertyChanged(nameof(IsReverseEnable));
        }

        /// <summary>
        /// Called when the <see cref="Length"/> property has been changed
        /// </summary>
        public async void OnLengthChanged()
        {
            if (_lastLength != GetLength())
            {
                var maxLength = SpoolType.Length;
                var joblength = LengthIncludingNumberOfUnits;


                if (joblength > maxLength)
                {
                    var maxRep = (maxLength == 0 ? 999 : (maxLength / Length));

                    if (!IsEureka)
                        await TangoIOC.Default.GetInstance<INotificationProvider>().ShowError($"You have reached the maximum length for this job {maxLength}.");

                    //if(NumberOfUnits > 1 && NumberOfUnits > maxRep)
                    //{
                    //    NumberOfUnits = (int)maxRep;
                    //}
                }

                OnUpdateLengthhWeight();
                RaisePropertyChanged(nameof(Length));

            }
            RaisePropertyChanged(nameof(GetEstimatedDuration));
        }

        private void OnUpdateLengthhWeight()
        {
            RaisePropertyChanged(nameof(LengthIncludingNumberOfUnits));
            RaisePropertyChanged(nameof(LengthIncludingNumberOfUnitsAndSpools));
            RaisePropertyChanged(nameof(WeightIncludingNumberOfUnits));
            RaisePropertyChanged(nameof(WeightIncludingNumberOfUnitsAndSpools));
        }

        private void OnSelectAllChanged()
        {
            if (Segments != null)
            {
                _preventChange = true;
                GroupingSegments.ToList().ForEach(x => x.IsSelected = SelectAllSegments);
                _preventChange = false;
                UpdateSelectedButtons();
            }
        }

        private void OnInterSegmentlengthChanged()
        {
            _preventChange = true;
            if (GroupingSegments.Count > 0)
            {
                int max = GroupingSegments.Max(x => x.SegmentIndex);
                GroupingSegments.Where(i => i.SegmentIndex != max).ToList().ForEach(x => x.EnableInterSegment = InterSegmentLength > 0);
            }
            _enableintersegment = InterSegmentLength > 0;
            _preventChange = false;

            OnLengthChanged();
            UpdateEffectiveSegments();
        }

        private void OnNumberOfSpoolsChanged()
        {
            if (BuildProvider.MachineType == MachineTypes.Eureka)
            {
                if (NumberSpools >= 4)
                {
                    int coeff = (int)(Copies + NumberSpools - 1) / NumberSpools;
                    _copies = coeff * NumberSpools;
                    RaisePropertyChanged(nameof(Copies));
                }
            }
            else
            {
                RaisePropertyChanged(nameof(SpoolCopies));
            }
        }

        #endregion

        #region collapsed mode actions

        public void InsertWhiteGapToSelectedSegments()
        {
            if (false == Segments.ToList().Any(x => x.IsSelected))
                return;
            LogManager.Log("Copy selected segments.");
            int max = GroupingSegments.Max(x => x.SegmentIndex);
            GroupingSegments.Where(i => i.IsSelected && i.SegmentIndex != max).ToList().ForEach(y => y.EnableInterSegment = true);
        }

        public void SwapSegments(int index1, int index2)
        {
            if (index1 < 0 || index1 >= GroupingSegments.Count)
                return;
            if (index2 < 0 || index2 >= GroupingSegments.Count)
                return;
            var tmpIndex = GroupingSegments[index2];
            GroupingSegments[index2] = GroupingSegments[index1];
            GroupingSegments[index1] = tmpIndex;
        }

        #endregion

    }
}