using System;
using System.Linq;
using InABox.Core;

namespace Comal.Classes
{
    public class EmployeeLookups : EntityLookup<Employee>, ILookupDefinition<Employee, Kanban>, ILookupDefinition<Employee, Employee>
    {
        public Filter<Employee> DefineFilter(Employee[] items)
        {
            var result = DefineFilter();
            result.Ands.Add(new Filter<Employee>(x => x.ID).NotInList(items.Select(x => x.ID).ToArray()));
            return result;
        }

        Columns<Employee> ILookupDefinition<Employee, Employee>.DefineFilterColumns()
            => new Columns<Employee>(x => x.ID);

        public Filter<Employee> DefineFilter(Kanban[] items)
        {
            var result = DefineFilter();
            result.Ands.Add(new Filter<Employee>(x => x.CanAllocateTasks).IsEqualTo(true));
            return result;
        }

        Columns<Kanban> ILookupDefinition<Employee, Kanban>.DefineFilterColumns()
            => new Columns<Kanban>();

        public override Columns<Employee> DefineColumns()
        {
            return new Columns<Employee>(
                x => x.ID,
                x => x.Name
            );
        }

        public override Filter<Employee> DefineFilter()
        {
            var filter = new Filter<Employee>(x => x.ID).IsNotEqualTo(Guid.Empty);
            filter.Ands.Add(new Filter<Employee>(x => x.StartDate).IsEqualTo(DateTime.MinValue).Or(x => x.StartDate)
                .IsLessThanOrEqualTo(FilterConstant.Today));
            filter.Ands.Add(new Filter<Employee>(x => x.FinishDate).IsEqualTo(DateTime.MinValue).Or(x => x.FinishDate)
                .IsGreaterThanOrEqualTo(FilterConstant.Today));
            return filter;
        }

        public override SortOrder<Employee> DefineSortOrder()
        {
            return new SortOrder<Employee>(x => x.Name);
        }
    }
}