using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Windows.Controls;
using System.Windows.Input;
using Comal.Classes;
using InABox.Configuration;
using InABox.Core;
using InABox.DynamicGrid;

namespace PRSDesktop
{
    /// <summary>
    ///     Interaction logic for SupplierPurchaseOrderPanel.xaml
    /// </summary>
    public partial class SupplierPurchaseOrderPanel : UserControl, IPanel<PurchaseOrder>
    {
        private readonly List<Tuple<Guid, string>> _categories = new();

        private PurchaseScreenSettings settings;

        public SupplierPurchaseOrderPanel()
        {
            InitializeComponent();
            Orders.HiddenColumns.Add(x => x.SupplierLink.ID);
            Orders.HiddenColumns.Add(x => x.PONumber);
            Orders.HiddenColumns.Add(x => x.SupplierLink.Code);
            Orders.HiddenColumns.Add(x => x.SupplierLink.Name);
            Orders.HiddenColumns.Add(x => x.Notes);
            Orders.HiddenColumns.Add(x => x.IssuedDate);
            Orders.HiddenColumns.Add(x => x.IssuedBy.Name);
            Orders.HiddenColumns.Add(x => x.DueDate);
            Orders.HiddenColumns.Add(x => x.ClosedDate);
            
            Orders.OnSelectItem += (o, e) =>
            {
                var row = e.Rows?.FirstOrDefault();
                Items.OrderID = row != null ? row.Get<PurchaseOrder, Guid>(x => x.ID) : CoreUtils.FullGuid;
                Items.SupplierID = row != null ? row.Get<PurchaseOrder, Guid>(x => x.SupplierLink.ID) : CoreUtils.FullGuid;
                Items.Closed = row != null ? !row.Get<PurchaseOrder, DateTime>(x => x.ClosedDate).IsEmpty() : true; LoadOrder(row);
                Items.Refresh(false, true);
            };
        }

        public bool IsReady { get; set; }

        public event DataModelUpdateEvent OnUpdateDataModel;

        public Dictionary<string, object[]> Selected()
        {
            return new Dictionary<string, object[]> { { typeof(PurchaseOrder).EntityName(), Orders.SelectedRows } };
        }


        public void CreateToolbarButtons(IPanelHost host)
        {
            //
        }

        public string SectionName => "Purchase Orders";

        public DataModel DataModel(Selection selection)
        {
            var ids = Orders.ExtractValues(x => x.ID, selection).ToArray();
            return new BaseDataModel<PurchaseOrder>(new Filter<PurchaseOrder>(x => x.ID).InList(ids));
        }

        public void Refresh()
        {
            Orders.Refresh(false, true);
        }

        public void Setup()
        {
            settings = new UserConfiguration<PurchaseScreenSettings>().Load();
            SplitPanel.View = settings.ViewType == ScreenViewType.Register ? DynamicSplitPanelView.Master :
                settings.ViewType == ScreenViewType.Details ? DynamicSplitPanelView.Detail : DynamicSplitPanelView.Combined;
            SplitPanel.MasterWidth = settings.PurchaseColumnWidth;

            StatusList.SelectedIndex = settings.ShowAll ? 1 : 0;
            StatusList.SelectionChanged += StatusList_SelectionChanged;

            _categories.Add(new Tuple<Guid, string>(CoreUtils.FullGuid, "All Categories"));

            var query = new MultiQuery();
            query.Add(
                LookupFactory.DefineFilter<PurchaseOrderCategory>(),
                LookupFactory.DefineColumns<PurchaseOrderCategory>(),
                LookupFactory.DefineSort<PurchaseOrderCategory>()
            );
            query.Query();


            LoadLookups<PurchaseOrderCategory>(query, _categories, x => x.Description);
            CategoryList.ItemsSource = _categories;
            CategoryList.SelectedValue =
                _categories.Any(x => x.Item1 == settings.SelectedCategory) ? settings.SelectedCategory : CoreUtils.FullGuid;
            Orders.SelectedCategory = (Guid)CategoryList.SelectedValue;
            CategoryList.SelectionChanged += CategoryList_SelectionChanged;

            Orders.ColumnsTag = settings.ViewType == ScreenViewType.Register ? settings.ViewType.ToString() : "";
            Orders.Refresh(true, false);
            Items.Refresh(true, false);
        }


        public void Shutdown()
        {
        }

        public void Heartbeat(TimeSpan time)
        {
        }

        private void LoadOrder(CoreRow row)
        {
            Number.Text = row == null ? "" : row.Get<PurchaseOrder, string>(x => x.PONumber);

            SupplierCode.Text = row == null ? "" : row.Get<PurchaseOrder, string>(x => x.SupplierLink.Code);
            SupplierName.Text = row == null ? "" : row.Get<PurchaseOrder, string>(x => x.SupplierLink.Name);

            Description.Text = row == null ? "" : row.Get<PurchaseOrder, string>(x => x.Notes);

            Issued.Text = row == null ? "" : CheckDate(row.Get<PurchaseOrder, DateTime>(x => x.IssuedDate));
            IssuedBy.Text = row == null ? "" : row.Get<PurchaseOrder, string>(x => x.IssuedBy.Name);

            DueDate.Text = row == null ? "" : CheckDate(row.Get<PurchaseOrder, DateTime>(x => x.DueDate));
            ClosedDate.Text = row == null ? "" : CheckDate(row.Get<PurchaseOrder, DateTime>(x => x.ClosedDate));
        }

        private string CheckDate(DateTime date)
        {
            return date.IsEmpty() ? "" : date.ToShortDateString();
        }

        private void LoadLookups<T>(MultiQuery query, List<Tuple<Guid, string>> lookups, Expression<Func<T, string>> display) where T : Entity
        {
            var table = query.Get<T>();
            foreach (var row in table.Rows)
                lookups.Add(new Tuple<Guid, string>(row.Get<T, Guid>(c => c.ID), row.Get(display)));
        }

        private void CategoryList_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!IsReady)
                return;

            Orders.SelectedCategory = (Guid)CategoryList.SelectedValue;

            settings.SelectedCategory = Orders.SelectedCategory;
            new UserConfiguration<PurchaseScreenSettings>().Save(settings);

            Refresh();
        }

        private void StatusList_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!IsReady)
                return;

            Orders.ShowAll = StatusList.SelectedIndex == 1;

            settings.ShowAll = Orders.ShowAll;
            new UserConfiguration<PurchaseScreenSettings>().Save(settings);

            Refresh();
        }

        private void Search_KeyUp(object sender, KeyEventArgs e)
        {
        }

        private void SplitPanel_OnChanged(object sender, DynamicSplitPanelChangedArgs e)
        {
            settings.ViewType = SplitPanel.View == DynamicSplitPanelView.Master ? ScreenViewType.Register :
                SplitPanel.View == DynamicSplitPanelView.Detail ? ScreenViewType.Details : ScreenViewType.Combined;
            settings.PurchaseColumnWidth = SplitPanel.MasterWidth;

            var newTag = settings.ViewType == ScreenViewType.Register ? settings.ViewType.ToString() : "";
            if (Orders.ColumnsTag != newTag)
            {
                Orders.ColumnsTag = newTag;
                Orders.Refresh(true, true);
            }

            new UserConfiguration<PurchaseScreenSettings>().Save(settings);
        }
    }
}