using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using Comal.Classes;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;
using NPOI.SS.Formula.Functions;

namespace PRSDesktop
{
    public class StockLocationGrid : DynamicDataGrid<StockLocation>
    {
        private bool bShowAll;
        public Button ShowAllBtn;
        public Button StockTakeBtn;
        public StockLocationGrid()
        {
            Options.AddRange(
                DynamicGridOption.MultiSelect,
                DynamicGridOption.FilterRows,
                DynamicGridOption.SelectColumns
            );

            ShowAllBtn = AddButton("Show All", PRSDesktop.Resources.parcel.AsBitmapImage(Color.White), ToggleHiddenJobs);

            if (Security.CanEdit<StockMovement>())
                StockTakeBtn = AddButton("Stock Take", PRSDesktop.Resources.rack.AsBitmapImage(Color.White), DoStockTake);
            HiddenColumns.Add(x => x.Job.ID);

            //HiddenColumns.Add(x => x.Movements);

            OnCustomiseEditor += CustomiseEditor;
        }

        private bool DoStockTake(Button sender, CoreRow[] rows)
        {
            if (!rows.Any())
            {
                MessageBox.Show("Please select at least one row for Stocktake!");
                return false;
            }

            var page = new StockTakeWindow(rows);

            page.Show();

            return true;
        }


        private bool ToggleHiddenJobs(Button sender, CoreRow[] rows)
        {
            bShowAll = !bShowAll;
            UpdateButton(sender, PRSDesktop.Resources.parcel.AsBitmapImage(Color.White), bShowAll ? "Active Only" : "Show All");
            return true;
        }

        protected override void Reload(Filters<StockLocation> criteria, Columns<StockLocation> columns, ref SortOrder<StockLocation> sort,
            Action<CoreTable, Exception> action)
        {
            if (!bShowAll)
                criteria.Add(new Filter<StockLocation>(x => x.Active).IsEqualTo(true));
            base.Reload(criteria, columns, ref sort, action);
        }

        protected override void DoValidate(StockLocation[] items, List<string> errors)
        {
            base.DoValidate(items, errors);
            var bHoldings = false;
            var bDefault = false;
            var bTransient = false;
            foreach (var item in items)
            {
                bHoldings = bHoldings;
                bDefault = bDefault || (item.Default && !item.Active);
                bTransient = bTransient || (item.Default && item.Type.Equals(StockLocationType.Transient));
            }

            if (bHoldings)
                errors.Add("Non-Empty locations must always be [Active]!");
            if (bDefault)
                errors.Add("Default locations must always be [Active]!");
            if (bTransient)
                errors.Add("Default locations must always be [Permanent]!");
        }

        private void CustomiseEditor(IDynamicEditorForm sender, StockLocation[]? items, DynamicGridColumn column, BaseEditor editor)
        {
            if (string.Equals(column.ColumnName, "Active"))
            {
                //var bHasHoldings = items.FirstOrDefault().Holdings != 0;
                //editor.Editable = bHasHoldings ? Editable.Disabled : Editable.Enabled;
                //if (bHasHoldings)
                var item = items?.FirstOrDefault();
                if (item is not null)
                    item.Active = true;
            }
        }
    }
}