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

namespace Comal.Classes
{
    public class KanbanFormLookups : DigitalFormInstanceLookups<Kanban, KanbanLink, KanbanForm> { }

    public class DigitalFormKanbanLookup : LookupDefinitionGenerator<DigitalForm, Kanban>
    {
        public override Filter<DigitalForm> DefineFilter(Kanban[] items)
        {
            var filter =
                LookupFactory.DefineLookupFilter<KanbanForm, DigitalForm, DigitalFormLink>(x => x.Form,
                    Array.Empty<KanbanForm>())
                ?? new Filter<DigitalForm>().All();

            foreach (var kanban in items)
            {
                filter.And(x => x.ID).InQuery(
                    new Filter<EmployeeDigitalForm>(x => x.Employee.ID).IsEqualTo(kanban.EmployeeLink.ID),
                    x => x.Form.ID);
            }

            return filter;
        }

        public override Columns<Kanban> DefineFilterColumns()
            => Columns.None<Kanban>().Add(x => x.EmployeeLink.ID);
    }

    public class DigitalFormKanbanFormLookup : LookupDefinitionGenerator<DigitalForm, KanbanForm>
    {
        public override Filter<DigitalForm> DefineFilter(KanbanForm[] items)
        {
            return new Filter<DigitalForm>(x => x.Active).IsEqualTo(true).And(x => x.AppliesTo).IsEqualTo("Kanban");
        }

        public override Columns<KanbanForm> DefineFilterColumns()
            => Columns.None<KanbanForm>();
    }
}