using System;
using System.Linq;
using System.Threading;
using Comal.Classes;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Wpf;

namespace PRSDesktop;


public class ConsignmentParcelGrid : DynamicDataGrid<ConsignmentParcel>
{
    public Guid ConsignmentID { get; set; }
    public bool Completed { get; set; }
    
    protected override DynamicGridColumns LoadColumns()
    {
        var columns = new DynamicGridColumns();
        columns.Add<ConsignmentParcel>(x => x.Description, 0, "Parcels", "", Alignment.MiddleLeft);
        return columns;
    }
    
    protected override void Reload(
    	Filters<ConsignmentParcel> criteria, Columns<ConsignmentParcel> columns, ref SortOrder<ConsignmentParcel>? sort,
    	CancellationToken token, Action<CoreTable?, Exception?> action)
    {
        criteria.Add(Filter<ConsignmentParcel>.Where(x => x.Consignment.ID).IsEqualTo(ConsignmentID));
        base.Reload(criteria, columns, ref sort, token, (table,exception) =>
        {
            if ((ConsignmentID != CoreUtils.FullGuid) && (table != null))
            {
                var row = table.NewRow();
                row.Set<ConsignmentParcel, Guid>(x => x.ID, CoreUtils.FullGuid);
                row.Set<ConsignmentParcel, string>(x => x.Description, "(All Items)");
                table.Rows.Insert(0, row);
                
                row = table.NewRow();
                row.Set<ConsignmentParcel, Guid>(x => x.ID, Guid.Empty);
                row.Set<ConsignmentParcel, string>(x => x.Description, "(Unallocated Items)");
                table.Rows.Add(row);
            }
            action(table,exception);
        });
    }

    protected override bool CanCreateItems()
    {
        if (ConsignmentID == Guid.Empty)
        {
            MessageWindow.ShowMessage("Please select a Consignment first!", "Error");
            return false;
        }
        
        if (Completed)
        {
            MessageWindow.ShowMessage("Cannot Modify a Completed Requisition!", "Error");
            return false;
        }
        
        return base.CanCreateItems();
        
    }

    public override ConsignmentParcel CreateItem()
    {
        var item = base.CreateItem();
        item.Consignment.ID = ConsignmentID;
        return item;
    }

    protected override void DoEdit()
    {
        Guid id = SelectedRows.FirstOrDefault()?.Get<ConsignmentParcel, Guid>(x => x.ID) ?? Guid.Empty;
        if ((id == CoreUtils.FullGuid) || (id == Guid.Empty))
            MessageWindow.ShowMessage("You cannot edit this item!", "Error");
        else
            base.DoEdit();
    }

}