using System;
using System.Linq;
using System.Windows;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;

namespace PRSDesktop
{
    public class DeliveryBuilderGrid : DynamicDataGrid<PurchaseOrderItem>
    {
        private Guid _orderid;

        private readonly BitmapImage tick = PRSDesktop.Resources.tick.AsBitmapImage();

        public DeliveryBuilderGrid()
        {
            DeliveryItems = null;
            Options.AddRange(DynamicGridOption.RecordCount);
            HiddenColumns.Add(x => x.Packet.ID);
            HiddenColumns.Add(x => x.PurchaseOrderLink.PONumber);
            HiddenColumns.Add(x => x.Packet.SetoutLink.ID);
            HiddenColumns.Add(x => x.Packet.SetoutLink.JobLink.ID);
            ActionColumns.Add(new DynamicImageColumn(ConfirmedImage, ConfirmClick));
            RowHeight = 35;
            FontSize = 20;
        }

        public CoreTable DeliveryItems { get; private set; }

        public Guid OrderID
        {
            get => _orderid;
            set
            {
                _orderid = value;
                DeliveryItems = new Client<DeliveryItem>().Query(
                    new Filter<DeliveryItem>(x => x.OrderItem.PurchaseOrderLink.ID).IsEqualTo(value),
                    new Columns<DeliveryItem>(x => x.ID, x => x.Delivery.ID, x => x.OrderItem.ID, x => x.OrderItem.PurchaseOrderLink.ID,
                        x => x.Description)
                );
                Refresh(true, true);
            }
        }

        public Guid DeliveryID { get; set; }

        public bool DeliveryDocketReady()
        {
            if (DeliveryItems == null || !DeliveryItems.Rows.Any())
                return false;

            if (Data == null || !Data.Rows.Any())
                return false;

            foreach (var row in Data.Rows)
            {
                var oid = row.Get<PurchaseOrderItem, Guid>(c => c.ID);
                var del = DeliveryItems.Rows.FirstOrDefault(r => r.Get<DeliveryItem, Guid>(c => c.OrderItem.ID).Equals(oid));
                if (del == null)
                    return false;
            }

            return true;
        }

        private bool ConfirmClick(CoreRow row)
        {
            if (row == null)
            {
                foreach (CoreRow dataRow in Data.Rows)
                {
                    var oid = dataRow.Get<PurchaseOrderItem, Guid>(c => c.ID);
                    var del = DeliveryItems.Rows.FirstOrDefault(r => r.Get<DeliveryItem, Guid>(c => c.OrderItem.ID).Equals(oid));
                    if (del == null)
                    {
                        var item = new DeliveryItem();
                        item.OrderItem.ID = oid;
                        item.Delivery.ID = DeliveryID;
                        item.Description = string.Format("{0} x {1} ",
                            dataRow.Get<PurchaseOrderItem, double>(c => c.Qty),
                            dataRow.Get<PurchaseOrderItem, string>(c => c.Description)
                        );
                        item.ManufacturingPacketLink.ID = dataRow.Get<PurchaseOrderItem, Guid>(c => c.Packet.ID);
                        item.JobLink.ID = dataRow.Get<PurchaseOrderItem, Guid>(c => c.Packet.SetoutLink.JobLink.ID);
                        item.Type = DeliveryItemType.TreatmentItem;
                        new Client<DeliveryItem>().Save(item, "Scanned By DeliveryBuilder");
                        var newrow = DeliveryItems.NewRow();
                        DeliveryItems.LoadRow(newrow, item);
                        DeliveryItems.Rows.Add(newrow);
                    }
                    else
                    {
                        var item = del.ToObject<DeliveryItem>();
                        new Client<DeliveryItem>().Delete(item, "Removed By DeliveryBuilder");
                        DeliveryItems.Rows.RemoveAt(del.Index);
                    }
                }
                DoChanged();
                return true;
            }

            if (DeliveryItems != null)
            {
                var oid = row.Get<PurchaseOrderItem, Guid>(c => c.ID);
                try
                {
                    CheckCode(oid);
                    DoChanged();
                    return true;
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                    return false;
                }
            }

            return false;
        }

        public bool CheckCode(Guid oid)
        {
            var ordrow = Data.Rows.Where(r => r.Get<PurchaseOrderItem, Guid>(c => c.ID).Equals(oid)).FirstOrDefault();
            if (ordrow == null)
                throw new Exception("Cannot find Order Item: " + oid);

            var del = DeliveryItems.Rows.FirstOrDefault(r => r.Get<DeliveryItem, Guid>(c => c.OrderItem.ID).Equals(oid));
            if (del == null)
            {
                var item = new DeliveryItem();
                item.OrderItem.ID = oid;
                item.Delivery.ID = DeliveryID;
                item.Description = string.Format("{0} x {1} ",
                    ordrow.Get<PurchaseOrderItem, double>(c => c.Qty),
                    ordrow.Get<PurchaseOrderItem, string>(c => c.Description)
                );
                item.ManufacturingPacketLink.ID = ordrow.Get<PurchaseOrderItem, Guid>(c => c.Packet.ID);
                item.JobLink.ID = ordrow.Get<PurchaseOrderItem, Guid>(c => c.Packet.SetoutLink.JobLink.ID);
                item.Type = DeliveryItemType.TreatmentItem;
                new Client<DeliveryItem>().Save(item, "Scanned By DeliveryBuilder");
                var newrow = DeliveryItems.NewRow();
                DeliveryItems.LoadRow(newrow, item);
                DeliveryItems.Rows.Add(newrow);
                return true;
            }
            else
            {
                var item = del.ToObject<DeliveryItem>();
                new Client<DeliveryItem>().Delete(item, "Removed By DeliveryBuilder");
                DeliveryItems.Rows.RemoveAt(del.Index);
                return false;
            }
        }

        private BitmapImage ConfirmedImage(CoreRow row)
        {
            if (row == null)
                return tick;
            if (DeliveryItems != null)
            {
                var oid = row.Get<PurchaseOrderItem, Guid>(c => c.ID);
                var del = DeliveryItems.Rows.FirstOrDefault(r => r.Get<DeliveryItem, Guid>(c => c.OrderItem.ID).Equals(oid));
                return del != null ? tick : null;
            }

            return null;
        }

        protected override void Reload(Filters<PurchaseOrderItem> criteria, Columns<PurchaseOrderItem> columns, ref SortOrder<PurchaseOrderItem> sort,
            Action<CoreTable, Exception> action)
        {
            criteria.Add(new Filter<PurchaseOrderItem>(x => x.PurchaseOrderLink.ID).IsEqualTo(_orderid));
            base.Reload(criteria, columns, ref sort, action);
        }
    }
}