using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using InABox.Core;

namespace Comal.Classes
{
    public class ManufacturingPacketArea : IFormula<ManufacturingPacket, object>
    {
        public Expression<Func<ManufacturingPacket, object>> Value => x => x.Height;

        public Expression<Func<ManufacturingPacket, object>>[] Modifiers =>
            new Expression<Func<ManufacturingPacket, object>>[] { x => x.Width, x => 0.000001m };

        public FormulaOperator Operator => FormulaOperator.Multiply;
        public FormulaType Type => FormulaType.Virtual;
    }

    public class ManufacturingPacketVolume : IFormula<ManufacturingPacket, object>
    {
        public Expression<Func<ManufacturingPacket, object>> Value => x => x.Height;

        public Expression<Func<ManufacturingPacket, object>>[] Modifiers => new Expression<Func<ManufacturingPacket, object>>[]
            { x => x.Width, x => x.Length, x => 0.000000001m };

        public FormulaOperator Operator => FormulaOperator.Multiply;
        
        public FormulaType Type => FormulaType.Virtual;
    }

    public class ManufacturingPacketTime : CoreAggregate<ManufacturingPacket, ManufacturingPacketStage, TimeSpan>
    {
        public override Expression<Func<ManufacturingPacketStage, TimeSpan>> Aggregate => x => x.Time;

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<ManufacturingPacketStage, object>>, Expression<Func<ManufacturingPacket, object>>> Links =>
            new Dictionary<Expression<Func<ManufacturingPacketStage, object>>, Expression<Func<ManufacturingPacket, object>>>()
            {
                { ManufacturingPacketStage => ManufacturingPacketStage.Parent.ID, ManufacturingPacket => ManufacturingPacket.ID }
            };
    }

    public class ManufacturingPacketTimeRemaining : CoreAggregate<ManufacturingPacket, ManufacturingPacketStage, TimeSpan>
    {
        public override Expression<Func<ManufacturingPacketStage, TimeSpan>> Aggregate => x => x.TimeRemaining;
        public Expression<Func<ManufacturingPacketStage, Guid>> Link => x => x.Parent.ID;
        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<ManufacturingPacketStage, object>>, Expression<Func<ManufacturingPacket, object>>> Links =>
            new Dictionary<Expression<Func<ManufacturingPacketStage, object>>, Expression<Func<ManufacturingPacket, object>>>()
            {
                { ManufacturingPacketStage => ManufacturingPacketStage.Parent.ID, ManufacturingPacket => ManufacturingPacket.ID }
            };
    }

    public class ManufacturingPacketActualTime : CoreAggregate<ManufacturingPacket, ManufacturingHistory, TimeSpan>
    {
        public override Expression<Func<ManufacturingHistory, TimeSpan>> Aggregate => x => x.WorkDuration;
        public override AggregateCalculation Calculation => AggregateCalculation.Sum;

        public override Dictionary<Expression<Func<ManufacturingHistory, object>>, Expression<Func<ManufacturingPacket, object>>> Links =>
            new Dictionary<Expression<Func<ManufacturingHistory, object>>, Expression<Func<ManufacturingPacket, object>>>()
            {
                { ManufacturingHistory => ManufacturingHistory.Packet.ID, ManufacturingPacket => ManufacturingPacket.ID }
            };
    }

    [UserTracking("Manufacturing")]
    [Caption("Manufacturing")]
    public class ManufacturingPacket : Entity, IPersistent, IRemotable, IOneToMany<Setout>, ILicense<ManufacturingLicense>, IIssues
    {
        [TextBoxEditor]
        [EditorSequence(1)]
        public string Title { get; set; }

        [CodeEditor(Visible = Visible.Default, Editable = Editable.Enabled)]
        [EditorSequence(2)]
        public string Serial { get; set; }

        private class SetoutLookup : LookupDefinitionGenerator<Setout, ManufacturingPacket>
        {
            public override Filter<Setout> DefineFilter(ManufacturingPacket[] items)
            {
                return new Filter<Setout>(x => x.JobLink.ID).IsEqualTo(items.First().SetoutLink.JobLink.ID);
            }

            public override Columns<ManufacturingPacket> DefineFilterColumns()
                => Columns.None<ManufacturingPacket>().Add(x => x.SetoutLink.JobLink.ID);
        }
        [LookupDefinition(typeof(SetoutLookup))]
        [EditorSequence(3)]
        [EntityRelationship(DeleteAction.Cascade)]
        public SetoutLink SetoutLink { get; set; }

        private class JobITPLookup : LookupDefinitionGenerator<JobITP, ManufacturingPacket>
        {
            public override Filter<JobITP> DefineFilter(ManufacturingPacket[] items)
            {
                if (items.Length == 1)
                    return new Filter<JobITP>(x => x.Job.ID).IsEqualTo(items.First().SetoutLink.JobLink.ID);
                return LookupFactory.DefineFilter<JobITP>();
            }
            public override Columns<ManufacturingPacket> DefineFilterColumns()
                => Columns.None<ManufacturingPacket>().Add(x => x.SetoutLink.JobLink.ID);
    
        }
        [EditorSequence(4)]
        [LookupDefinition(typeof(JobITPLookup))]
        public JobITPLink ITP { get; set; }

        [TextBoxEditor]
        [EditorSequence(5)]
        public string Location { get; set; }

        // Used to calculate time & materials
        [EditorSequence(7)]
        [IntegerEditor]
        public int Quantity { get; set; }

        [EditorSequence(8)]
        [IntegerEditor]
        // Determines # of barcodes to print
        public int BarcodeQty { get; set; }

        [EditorSequence(9)]
        [TimestampEditor(Editable = Editable.Hidden)]
        public override DateTime Created
        {
            get => base.Created;
            set => base.Created = value;
        }

        [EditorSequence(10)]
        [DateTimeEditor]
        public DateTime DueDate { get; set; }

        [EditorSequence("Design", 101)]
        [EntityRelationship(DeleteAction.Cascade)]
        public PDFDocumentLink Drawing { get; set; }

        // To be overlaid over the PDF document
        [EditorSequence("Design", 102)]
        [TextBoxEditor]
        public string WaterMark { get; set; }

        [EditorSequence("Design", 103)]
        public double Height { get; set; }

        [EditorSequence("Design", 104)]
        public double Width { get; set; }

        [EditorSequence("Design", 105)]
        public double Length { get; set; }

        [EditorSequence("Manufacturing", 200)]
        public ManufacturingTemplateLink ManufacturingTemplateLink { get; set; }

        [EditorSequence("Manufacturing", 201)]
        [TimestampEditor(Editable = Editable.Disabled)]
        public DateTime Issued { get; set; }

        [EditorSequence("Manufacturing", 202)]
        [LoggableProperty]
        public bool Priority { get; set; }

        [EditorSequence("Manufacturing", 203)]
        [LoggableProperty]
        public bool Distributed { get; set; }

        [EditorSequence("Manufacturing", 204)]
        [TextBoxEditor(Editable = Editable.Disabled)]
        public string Trolleys { get; set; }

        [EditorSequence("Manufacturing", 205)]
        [TimestampEditor(Editable = Editable.Hidden)]
        public DateTime BarcodePrinted { get; set; }

        [EditorSequence("Manufacturing", 206)]
        [DateTimeEditor(Editable = Editable.Disabled)]
        [SecondaryIndex]
        public DateTime Completed { get; set; }

        [SecondaryIndex]
        [TimestampEditor]
        [EditorSequence("Manufacturing", 207)]
        public DateTime Archived { get; set; } = DateTime.MinValue;

        [CheckBoxEditor]
        [EditorSequence("Issues", 2)]
        [LoggableProperty]
        public bool OnHold { get; set; }

        [MemoEditor]
        [EditorSequence("Issues", 1)]
        [LoggableProperty]
        public string Issues { get; set; }

        public override string ToString()
        {
            return string.Format("{0} {1}", SetoutLink.Number, Serial);
        }

        public static void Progress(IEnumerable<ManufacturingPacket> packets, ManufacturingPacketStage[] Stages)
        {
            //List<ManufacturingPacketStage> updates = new List<ManufacturingPacketStage>();
            foreach (var packet in packets.Where(x => !x.StageLink.Equals(CoreUtils.FullGuid)))
            {
                var stages = Stages.Where(x => x.Parent.ID.Equals(packet.ID));

                long sequence = 0;

                var stage = stages.FirstOrDefault(x => x.ID.Equals(packet.StageLink.ID));
                if (stage != null)
                {
                    stage.Completed = DateTime.Now;
                    stage.PercentageComplete = 100.0F;
                    sequence = stage.Sequence;
                }

                // Update the pointer to the next stage
                stage = stages.Where(x => x.Sequence > sequence).FirstOrDefault();
                if (stage != null)
                {
                    stage.QualityStatus = QualityStatus.NotChecked;
                    stage.QualityNotes = "";
                    stage.Station = 0;
                    stage.Started = DateTime.MinValue;
                    stage.Completed = DateTime.MinValue;
                    stage.PercentageComplete = 0.0F;
                    packet.StageLink.ID = stage.ID;
                    packet.StageLink.Synchronise(stage);
                }
                else
                {
                    packet.StageLink.ID = CoreUtils.FullGuid;
                }

                packet.Issued = !packet.StageLink.IsValid() ? DateTime.MinValue : packet.Issued.IsEmpty() ? DateTime.Now : packet.Issued;
                packet.Completed = packet.StageLink.ID.Equals(CoreUtils.FullGuid)
                    ? packet.Completed.IsEmpty() ? DateTime.Now : packet.Completed
                    : DateTime.MinValue;
            }
        }

        public static void Regress(IEnumerable<ManufacturingPacket> pkts, ManufacturingPacketStage[] stgs)
        {
            foreach(var packet in pkts)
            {
                var stages = stgs.Where(x => x.Parent.ID.Equals(packet.ID));

                var sequence = long.MaxValue;

                var stage = stages.FirstOrDefault(x => x.ID.Equals(packet.StageLink.ID));
                if (stage != null)
                {
                    stage.Completed = DateTime.MinValue;
                    stage.PercentageComplete = 0.0F;
                    stage.QualityStatus = QualityStatus.NotChecked;
                    stage.QualityNotes = "";
                    sequence = stage.Sequence;
                }

                // Update the pointer to the previous stage
                stage = stages.Where(x => x.Sequence < sequence).LastOrDefault();
                if (stage != null)
                {
                    stage.QualityStatus = QualityStatus.NotChecked;
                    stage.QualityNotes = "";
                    stage.Station = 0;
                    stage.Started = DateTime.MinValue;
                    stage.Completed = DateTime.MinValue;
                    stage.PercentageComplete = 0.0F;
                }

                packet.StageLink.ID = stage == null ? Guid.Empty : stage.ID;
                packet.Issued = !packet.StageLink.IsValid() ? DateTime.MinValue : packet.Issued.IsEmpty() ? DateTime.Now : packet.Issued;
                packet.DueDate = packet.Issued.IsEmpty() ? DateTime.MinValue : packet.DueDate;
                packet.Completed = packet.StageLink.ID.Equals(CoreUtils.FullGuid)
                    ? packet.Completed.IsEmpty() ? DateTime.Now : packet.Completed
                    : DateTime.MinValue;
            }
        }

        #region Aggregates

        [EditorSequence(300)]
        [DoubleEditor(Editable = Editable.Hidden)]
        [Formula(typeof(ManufacturingPacketArea))]
        public double Area { get; set; }

        [EditorSequence(301)]
        [DoubleEditor(Editable = Editable.Hidden)]
        [Formula(typeof(ManufacturingPacketVolume))]
        public double Volume { get; set; }

        [EditorSequence(302)]
        [Aggregate(typeof(ManufacturingPacketTime))]
        public TimeSpan Time { get; set; }

        [EditorSequence(303)]
        [Aggregate(typeof(ManufacturingPacketTimeRemaining))]
        public TimeSpan TimeRemaining { get; set; }

        [EditorSequence(304)]
        [Aggregate(typeof(ManufacturingPacketActualTime))]
        public TimeSpan ActualTime { get; set; }

        #endregion

        #region Internal / NullEditor Properties

        private class ManufacturingPacketStageLookup : LookupDefinitionGenerator<ManufacturingPacketStage, ManufacturingPacket>
        {
            public override Filter<ManufacturingPacketStage>? DefineFilter(ManufacturingPacket[] items)
            {
                if (items.Any())
                    return new Filter<ManufacturingPacketStage>(x => x.Parent.ID).IsEqualTo(items.First().ID);
                return null;
            }

            public override Columns<ManufacturingPacket> DefineFilterColumns()
                => Columns.None<ManufacturingPacket>().Add(x => x.ID);
        }
        [LookupDefinition(typeof(ManufacturingPacketStageLookup))]
        [NullEditor]
        public ManufacturingPacketStageLink StageLink { get; set; }

        [NullEditor]
        public QAFormLink QAForm { get; set; }

        // I think ITPs will end up being linked to a stage,
        // So this might get obsoleted at some point
        private class JobStageLookup : LookupDefinitionGenerator<JobStage, ManufacturingPacket>
        {
            public override Filter<JobStage> DefineFilter(ManufacturingPacket[] items)
            {
                if (items.Length == 1)
                    return new Filter<JobStage>(x => x.Job.ID).IsEqualTo(items.First().SetoutLink.JobLink.ID).And(x => x.IsHeader).IsEqualTo(false);
                return new Filter<JobStage>(x => x.ID).IsEqualTo(Guid.Empty);
            }

            public override Columns<ManufacturingPacket> DefineFilterColumns()
                => Columns.None<ManufacturingPacket>().Add(x => x.SetoutLink.JobLink.ID);
        }
        [LookupDefinition(typeof(JobStageLookup))]
        [NullEditor]
        public JobStageLink JobStage { get; set; }

        [NullEditor]
        [EntityRelationship(DeleteAction.SetNull)]
        public PurchaseOrderItemLink OrderItem { get; set; }

        [NullEditor]
        public DateTime EstimatedDate { get; set; }

        #endregion

        #region Obsolete Properties

        // The code of the Linked Manufacturing Template
        // Suggested - set to obsolete?
        [NullEditor]
        [Obsolete("Replaced with ManufacturingTemplateLink.Code", true)]
        public string Code { get; set; }

        // The Factory to which this packet template belongs
        // Suggestion - Set to obsolete?
        [NullEditor]
        [Obsolete("Replaced with ManufacturingTemplateLink.FactoryLink.ID")]
        public string Group { get; set; }

        [NullEditor]
        [Obsolete("Replaced with BarcodeQty")]
        public bool GroupedBarcode { get; set; }

        private BarcodeType _barcodetype = BarcodeType.Unspecified;

        [NullEditor]
        [Obsolete("Replaced with BarcodeQty")]
        public BarcodeType BarcodeType
        {
            get => _barcodetype == BarcodeType.Unspecified ? GroupedBarcode ? BarcodeType.Grouped : BarcodeType.Individual : _barcodetype;
            set => _barcodetype = value;
        }

        // Comes from Setout.Title (Should be Reference)
        [NullEditor]
        [Obsolete("Replaced with SetoutLink.Reference")]
        public string Reference { get; set; }

        // Comes from Setout.Location
        [NullEditor]
        [Obsolete("Replaced with SetoutLink.Description")]
        public string Description { get; set; }

        [Obsolete("Replaced With ManufacturingTemplateLink")]
        [NullEditor]
        public Guid ManufacturingItemID { get; set; }

        [NullEditor]
        [Obsolete("Replaced with ManufacturingPacketLink.Code")]
        public string Template { get; set; }

        [Obsolete("Replaced With SetoutLink.JobLink")]
        [EntityRelationship(DeleteAction.Cascade)]
        [NullEditor]
        public JobLink JobLink { get; set; }

        #endregion

        #region Functions

        //public void MovePrevious()
        //{
        //    bool bFound = false;
        //    SetoutStage prev = null;
        //    foreach (SetoutStage stage in Stages)
        //    {
        //        if (bFound)
        //        {
        //            stage.Started = DateTime.MinValue;
        //            stage.Completed = DateTime.MinValue;
        //            stage.PercentageComplete = 0.0F;
        //        }
        //        else if (stage.Completed.IsEmpty())
        //        {
        //            stage.Started = DateTime.MinValue;
        //            stage.Completed = DateTime.MinValue;
        //            stage.PercentageComplete = 0.0F;
        //            bFound = true;
        //            if (prev != null)
        //                prev.Completed = DateTime.MinValue;
        //        }
        //        else
        //            prev = stage;
        //    }
        //    if (prev == null)
        //        Issued = DateTime.MinValue;
        //    Completed = DateTime.MinValue;

        //    Stage = CurrentStage();

        //}

        //public void MoveNext()
        //{
        //    bool bFound = false;
        //    bool bComplete = true;

        //    if (Issued.IsEmpty())
        //        Issued = DateTime.Now;

        //    foreach (SetoutStage stage in Stages)
        //    {
        //        if (bFound)
        //        {
        //            stage.Started = DateTime.MinValue;
        //            stage.Completed = DateTime.MinValue;
        //            stage.PercentageComplete = 0.0F;
        //            bComplete = false;
        //        }
        //        else if (stage.Started.IsEmpty())
        //        {
        //            //stage.Started = DateTime.Now;
        //            stage.Completed = DateTime.MinValue;
        //            stage.PercentageComplete = 0.0F;
        //            bComplete = false;
        //            bFound = true;
        //        }
        //        else if (stage.Completed.IsEmpty())
        //        {
        //            stage.Completed = DateTime.Now;
        //            stage.PercentageComplete = 100.0F;
        //            bFound = true;
        //        }
        //    }

        //    //Completed = bComplete ? DateTime.Now : DateTime.MinValue;
        //    bool bIsComplete = !Stages.Any(x => x.Completed.Equals(DateTime.MinValue));
        //    if (bIsComplete && Completed.Equals(DateTime.MinValue))
        //        Completed = DateTime.Now;

        //    Stage = CurrentStage();

        //}

        //public Boolean IsComplete()
        //{
        //    if ((!Issued.IsEmpty()) && (Stages != null))
        //    {
        //        foreach (SetoutStage stage in Stages)
        //        {
        //            if (stage.Completed.IsEmpty())
        //                return false;
        //        }
        //        return true;
        //    }
        //    return false;
        //}

        //public String Status()
        //{
        //    if ((Stages == null) || (!Stages.Any()))
        //        return "No Template!";

        //    if (Issued.IsEmpty())
        //        return "To Be Issued";

        //    var stage = GetCurrentStage();

        //    if (stage != null)
        //    {
        //        if (!Archived.IsEmpty())
        //            return "Cancelled";
        //        else
        //            return String.Format("{0} ({1:F2}%)", stage.Name, stage.PercentageComplete);
        //    }

        //    return "Complete";
        //}

        //public Guid CurrentStage()
        //{
        //    if (Issued.IsEmpty())
        //        return Guid.Empty;

        //    SetoutStage stage = GetCurrentStage();
        //    if (stage != null)
        //        return stage.SectionID;

        //    return CoreUtils.FullGuid;
        //}

        //public SetoutStage GetCurrentStage()
        //{
        //    if ((!Issued.IsEmpty()) && (Stages != null))
        //    {
        //        foreach (SetoutStage stage in Stages)
        //        {
        //            if (stage.Completed.IsEmpty())
        //                return stage;
        //        }
        //    }
        //    return null;
        //}

        //public void SetStage(Guid id, bool complete = false)
        //{
        //    bool bFound = id == Guid.Empty;

        //    Issued = (id == Guid.Empty) ? DateTime.MinValue : Issued.IsEmpty() ? DateTime.Now : Issued;

        //    if (id == CoreUtils.FullGuid)
        //    {
        //        foreach (SetoutStage stage in Stages)
        //        {
        //            stage.Started = stage.Started.IsEmpty() ? DateTime.Now : stage.Started;
        //            stage.Completed = stage.Completed.IsEmpty() ? DateTime.Now : stage.Completed;
        //            stage.PercentageComplete = 100.0F;
        //            Completed = stage.Completed;
        //        }
        //    }
        //    else
        //    {
        //        //Completed = DateTime.MinValue;

        //        foreach (SetoutStage stage in Stages)
        //        {
        //            if (stage.SectionID.Equals(id))
        //            {
        //                bFound = true;
        //                //stage.Started = stage.Started.IsEmpty() ? DateTime.Now : stage.Started;
        //                stage.Completed = complete ? DateTime.Now : DateTime.MinValue;
        //                stage.PercentageComplete = stage.Completed.IsEmpty() ? 0.0F : 100.0F;
        //            }
        //            else
        //            {
        //                if (!bFound)
        //                {
        //                    // Stages Before this stage - Update Started and Completed if Empty
        //                    if (stage.Started.IsEmpty())
        //                        stage.Started = DateTime.Now;
        //                    if (stage.Completed.IsEmpty())
        //                        stage.Completed = DateTime.Now;
        //                    stage.PercentageComplete = 100.0F;
        //                }
        //                else
        //                {
        //                    // Stages After This Stage - Blank out Started and Completed
        //                    stage.Started = DateTime.MinValue;
        //                    stage.Completed = DateTime.MinValue;
        //                    stage.PercentageComplete = 0.0F;
        //                }
        //            }
        //        }
        //    }

        //    bool bIsComplete = !Stages.Any(x => x.Completed.Equals(DateTime.MinValue));
        //    if (bIsComplete && Completed.Equals(DateTime.MinValue))
        //        Completed = DateTime.Now;

        //    Stage = CurrentStage();

        //}

        #endregion
    }
}