using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Windows;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;

namespace PRSDesktop
{
    
    internal class EmployeeRoleGrid : DynamicDataGrid<EmployeeRole>
    {

        public EmployeeRoleGrid()
        {
            ColumnsTag = "EmployeeRoles";
        }

        protected override void DoReconfigure(DynamicGridOptions options)
        {
            base.DoReconfigure(options);

            options.Clear();
            options.SelectColumns = true;
            options.AddRows = true;
            options.DeleteRows = true;
            options.MultiSelect = true;
        }

        public Guid EmployeeID { get; set; }

        
        protected override void Reload(
        	Filters<EmployeeRole> criteria, Columns<EmployeeRole> columns, ref SortOrder<EmployeeRole>? sort,
        	CancellationToken token, Action<CoreTable?, Exception?> action)
        {
            if (EmployeeID == Guid.Empty)
                criteria.Add(new Filter<EmployeeRole>().None());
            else
                criteria.Add(new Filter<EmployeeRole>(x => x.EmployeeLink).LinkValid(EmployeeID));
            base.Reload(criteria, columns, ref sort, token, action);
        }

        protected override bool CanCreateItems()
        {
            return EmployeeID != Guid.Empty;
        }

        protected override bool CanDeleteItems(params CoreRow[] rows)
        {
            return EmployeeID != Guid.Empty;
        }

        public override EmployeeRole CreateItem()
        {
            var result = base.CreateItem();
            result.EmployeeLink.ID = EmployeeID;
            return result;
        }
        
        protected override void DoAdd(bool OpenEditorOnDirectEdit = false)
        {
            var ids = Data.ExtractValues<EmployeeRole, Guid>(c => c.RoleLink.ID).Distinct().ToArray();
            MultiSelectDialog<Role> dlg = new MultiSelectDialog<Role>(
                new Filter<Role>(x => x.ID).NotInList(ids),
                Columns.None<Role>().Add(x => x.ID).Add(x => x.Code).Add(x => x.Description),
                true);
            if (dlg.ShowDialog() == true)
            {
                List<EmployeeRole> updates = new List<EmployeeRole>();
                foreach (var newid in dlg.IDs())
                {
                    EmployeeRole newrole = new EmployeeRole();
                    newrole.EmployeeLink.ID = EmployeeID;
                    newrole.RoleLink.ID = newid;
                    updates.Add(newrole);
                }

                if (updates.Any())
                {
                    new Client<EmployeeRole>().Save(updates, "Updated by User");
                    Refresh(false, true);
                    DoChanged();
                }

            }
            
        }
    }
        
}