using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Wpf;
using InABox.WPF;

namespace PRSDesktop
{
    public class OptimisationItem : BaseObject
    {
        public OptimisationItem()
        {
            Packets = new List<Guid>();
        }

        public string Specification { get; set; }
        public string Setout { get; set; }
        public double Area { get; set; }
        public int Quantity { get; set; }
        public List<Guid> Packets { get; }
        public bool Selected { get; set; }
    }

    public class OptimisationGrid : DynamicGrid<OptimisationItem>
    {
        private readonly BitmapImage disabled = PRSDesktop.Resources.disabled.AsBitmapImage();

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

        public OptimisationGrid()
        {
            Items = new List<OptimisationItem>();

            ActionColumns.Add(new DynamicTickColumn<OptimisationItem, bool>(x => x.Selected, tick, tick, disabled, CheckClick));

            HiddenColumns.Add(x => x.Selected);
        }

        public List<OptimisationItem> Items { get; }

        protected override void DeleteItems(params CoreRow[] row)
        {
        }

        protected override void SaveItem(OptimisationItem item)
        {
        }

        protected override OptimisationItem LoadItem(CoreRow row)
        {
            return Items[row.Index];
        }

        protected override void Reload(Filters<OptimisationItem> criteria, Columns<OptimisationItem> columns, ref SortOrder<OptimisationItem> sort,
            Action<CoreTable, Exception> action)
        {
            var table = new CoreTable();
            table.LoadColumns(typeof(OptimisationItem));
            table.LoadRows(Items);
            action.Invoke(table, null);
        }

        private bool CheckClick(CoreRow row)
        {
            var item = Items[row.Index];
            item.Selected = !item.Selected;
            return true;
        }

        protected override DynamicGridColumns LoadColumns()
        {
            var columns = new DynamicGridColumns();
            columns.Add(new DynamicGridColumn { ColumnName = "Setout", Caption = "Setout", Width = 0, Alignment = Alignment.MiddleLeft });
            columns.Add(new DynamicGridColumn { ColumnName = "Area", Caption = "m2", Format = "N4", Width = 70, Alignment = Alignment.MiddleCenter });
            columns.Add(new DynamicGridColumn { ColumnName = "Quantity", Caption = "#", Width = 50, Alignment = Alignment.MiddleCenter });
            return columns;
        }
    }

    /// <summary>
    ///     Interaction logic for Optimisation.xaml
    /// </summary>
    public partial class Optimisation : ThemableWindow
    {
        private readonly OptimisationGrid grid = new();
        private readonly List<OptimisationItem> Items = new();

        private string SelectedSpecification = "";

        public Optimisation()
        {
            InitializeComponent();
            grid.SetValue(Grid.RowProperty, 1);
            grid.SetValue(Grid.ColumnProperty, 0);
            grid.SetValue(Grid.ColumnSpanProperty, 4);
            grid.Margin = new Thickness(5);
            layout.Children.Add(grid);

            LoadData();

            grid.Refresh(true, true);
        }

        private T GetAttribute<T>(ManufacturingItem item, string name)
        {
            if (item.Attributes.ContainsKey(name))
                return (T)Convert.ChangeType(item.Attributes[name], typeof(T));
            return default;
        }

        private void LoadData()
        {
            Specifications.Items.Clear();
            Specifications.Items.Add("");
            grid.Items.Clear();

            var setouts = new Dictionary<Guid, Setout>();

            var mcli = new Client<ManufacturingPacket>();
            var packets = mcli.Query(
                new Filter<ManufacturingPacket>(x => x.StageLink).NotLinkValid(),
                new Columns<ManufacturingPacket>(x => x.ID, x => x.ManufacturingItemID, x => x.SetoutLink.ID, x => x.ManufacturingTemplateLink.Code)
            );
            foreach (var row in packets.Rows)
            {
                var packetid = row.Get<ManufacturingPacket, Guid>(r => r.ID);
                var setoutid = row.Get<ManufacturingPacket, Guid>(r => r.SetoutLink.ID);
                var code = row.Get<ManufacturingPacket, string>(x => x.ManufacturingTemplateLink.Code);
                if (code.StartsWith("GMO"))
                {
                    Setout setout = null;
                    if (setouts.ContainsKey(setoutid))
                    {
                        setout = setouts[setoutid];
                    }
                    else
                    {
                        var scli = new Client<Setout>();
                        setout = scli.Load(new Filter<Setout>(x => x.ID).IsEqualTo(setoutid)).FirstOrDefault();
                    }

                    if (setout != null)
                    {
                        setouts[setoutid] = setout;
                        ManufacturingItem item = null; //setout.Manufacturing.FirstOrDefault(x => x.Code.Equals(code));
                        if (item != null)
                        {
                            var spec = GetAttribute<string>(item, "Glass Specifications");
                            if (!string.IsNullOrEmpty(spec))
                            {
                                if (!Specifications.Items.Contains(spec))
                                    Specifications.Items.Add(spec);

                                var height = GetAttribute<double>(item, "Height");
                                var width = GetAttribute<double>(item, "Width");
                                var edge = GetAttribute<string>(item, "Edgework");
                                var opt = Items.FirstOrDefault(x =>
                                    !string.IsNullOrEmpty(x.Specification) && x.Specification.Equals(spec) && x.Setout.Equals(setout.Number));
                                if (opt == null)
                                {
                                    opt = new OptimisationItem { Specification = spec, Setout = setout.Number };
                                    Items.Add(opt);
                                }

                                opt.Area += height / 1000F * (width / 1000F);
                                opt.Quantity += item.Quantity;
                                opt.Packets.Add(packetid);
                            }
                        }
                    }
                }
            }

            Specifications.SelectedValue = "";
        }

        private void Specifications_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            SelectedSpecification = Specifications.SelectedValue.ToString();
            grid.Items.Clear();
            grid.Items.AddRange(Items.Where(x => x.Specification.Equals(SelectedSpecification)));
            grid.Items.ForEach(opt => opt.Selected = true);
            grid.Refresh(false, true);
        }

        private void OKButton_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("Not Implemented!");
            // Prompt for location of new MO sheet
            // Copy blank into location
            // Open sheet / find "Data" page
            // Iterate over OptimisationItems
            // Set Fields
            // Open for User to perform followup work

            Close();
        }

        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }
    }
}