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

namespace PRSDesktop;

public class ConsignmentItemGrid : DynamicDataGrid<PurchaseOrderItem>
{
    private readonly Button receiveall;

    private readonly Button receiveselected;

    public ConsignmentItemGrid()
    {
        Options.AddRange(DynamicGridOption.RecordCount, DynamicGridOption.SelectColumns, DynamicGridOption.AddRows, DynamicGridOption.DeleteRows,
            DynamicGridOption.MultiSelect);
        receiveall = AddButton("Receive All", null, ReceiveAll);
        receiveall.IsEnabled = false;
        receiveselected = AddButton("Receive Selected", null, ReceiveSelected);
        receiveselected.IsEnabled = false;
    }

    public Guid ConsignmentID { get; set; }
    public bool Completed { get; set; }

    protected override void SelectItems(CoreRow[] rows)
    {
        receiveselected.IsEnabled = rows != null && rows.Any(r => r.Get<PurchaseOrderItem, DateTime>(c => c.ReceivedDate).IsEmpty());
        receiveall.IsEnabled = Data.Rows.Any(r => r.Get<PurchaseOrderItem, DateTime>(c => c.ReceivedDate).IsEmpty());
        base.SelectItems(rows);
    }

    private bool ReceiveAll(Button sender, CoreRow[] rows)
    {
        var unreceived = Data.Rows.Where(r => r.Get<PurchaseOrderItem, DateTime>(c => c.ReceivedDate).IsEmpty());
        if (!unreceived.Any())
        {
            MessageBox.Show("No Items to Receive");
            return false;
        }

        var now = DateTime.Now;
        using (new WaitCursor())
        {
            var items = unreceived.Select(x => x.ToObject<PurchaseOrderItem>());
            foreach (var item in items)
                item.ReceivedDate = now;
            new Client<PurchaseOrderItem>().Save(items, "Consignment Items Received");
        }

        return true;
    }

    private bool ReceiveSelected(Button sender, CoreRow[] rows)
    {
        if (!rows.Any())
        {
            MessageBox.Show("Please select a row first");
            return false;
        }

        var now = DateTime.Now;
        using (new WaitCursor())
        {
            var items = LoadItems(rows);
            foreach (var item in items)
                item.ReceivedDate = now;
            new Client<PurchaseOrderItem>().Save(items, "Consignment Items Received");
        }

        return true;
    }

    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.Consignment.ID).IsEqualTo(
            ConsignmentID == Guid.Empty ? CoreUtils.FullGuid : ConsignmentID));
        base.Reload(criteria, columns, ref sort, action);
    }

    protected override void DoAdd()
    {
        if (ConsignmentID.Equals(Guid.Empty))
        {
            MessageBox.Show("Please select a Requisition first!");
            return;
        }

        if (Completed)
        {
            MessageBox.Show("Cannot Modify a Completed Requisition");
            return;
        }


        var dialog = new MultiSelectDialog<PurchaseOrderItem>(
            new Filter<PurchaseOrderItem>(x => x.Consignment.ID).IsEqualTo(Guid.Empty).And(x => x.ReceivedDate).IsEqualTo(DateTime.MinValue),
            new Columns<PurchaseOrderItem>(x => x.PurchaseOrderLink.PONumber, x => x.Product.Code, x => x.Product.Name, x => x.Description,
                x => x.Qty)
            //new System.Linq.Expressions.Expression<Func<PurchaseOrderItem, object>>[] { x => x.PurchaseOrderLink.PONumber, x => x.ProductLink.Code, x=>x.ProductLink.Name, x=>x.Description, x=>x.Qty}
        );
        if (dialog.ShowDialog())
        {
            Progress.Show("Adding Order Items");

            var items = dialog.Items();
            foreach (var item in items)
                item.Consignment.ID = ConsignmentID;
            Progress.SetMessage("Updating Items");
            new Client<PurchaseOrderItem>().Save(items, "Added to Consignment");
            Refresh(false, true);
            Progress.Close();
            MessageBox.Show(string.Format("{0} order items added", items.Length));
        }
    }

    public override bool EditItems(PurchaseOrderItem[] items, Func<Type, CoreTable> PageDataHandler, bool PreloadPages = false)
    {
        if (ConsignmentID.Equals(Guid.Empty))
        {
            MessageBox.Show("Please select a Requisition first!");
            return false;
        }

        if (Completed)
        {
            MessageBox.Show("Cannot Modify a Completed Requisition");
            return false;
        }

        return base.EditItems(items, PageDataHandler, PreloadPages);
    }

    protected override bool CanDeleteItems(CoreRow[] rows)
    {
        if (ConsignmentID.Equals(Guid.Empty))
        {
            MessageBox.Show("Please select a Requisition first!");
            return false;
        }

        if (Completed)
        {
            MessageBox.Show("Cannot Modify a Closed Requisition");
            return false;
        }

        return base.CanDeleteItems(rows);
    }

    protected override void DeleteItems(params CoreRow[] rows)
    {
        using (new WaitCursor())
        {
            var items = LoadItems(rows);
            foreach (var item in items)
                item.Consignment.ID = Guid.Empty;
            new Client<PurchaseOrderItem>().Save(items, "Removed from Consignment");
        }
    }
}