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

namespace Comal.Classes
{
    
    public interface IEmployeeLeaveRequest
    {
        EmployeeLink EmployeeLink { get; set; }
        
        LeaveRequestActivityLink LeaveType { get; set; } 
        
        DateTime From { get; set; }
        TimeSpan FromTime { get; set; }
        
        DateTime To { get; set; }
        TimeSpan ToTime { get; set; }
        
        DateTime Approved { get; set; }
        LeaveRequestStatus Status { get; set; }
        
        LeaveRequestLink LeaveRequest { get; set; }
        StandardLeaveLink StandardLeave { get; set; }
        
    }
    
    public class EmployeeStandardLeaveGenerator : AutoEntityCartesianGenerator<IEmployeeLeaveRequest>
    {
        public override void Configure()
        {
            AddTable(LookupFactory.DefineFilter<Employee>())
                .AddMapping(x => x.ID, x => x.EmployeeLink.ID);
            
            AddTable<StandardLeave>(null)
                .AddMapping(x => x.LeaveType.ID, x => x.LeaveType.ID)
                .AddMapping(x => x.From, x => x.From)
                .AddMapping(x => x.FromTime, x => x.FromTime)
                .AddMapping(x => x.To, x => x.To)
                .AddMapping(x => x.ToTime, x => x.ToTime)
                .AddMapping(x=>x.Created, x=>x.Approved)
                .AddMapping(x=>x.ID, x=>x.StandardLeave.ID);
            
            AddConstant(LeaveRequestStatus.Approved.ToString(), x=>x.Status);
            AddConstant(Guid.Empty, x => x.LeaveRequest.ID);
        }

        public override bool Distinct => false;

        public override Column<IEmployeeLeaveRequest>[] IDColumns => new Column<IEmployeeLeaveRequest>[]
        {
            new Column<IEmployeeLeaveRequest>(x => x.EmployeeLink.ID),
            new Column<IEmployeeLeaveRequest>(x => x.StandardLeave.ID)
        };
    }
    
    [AutoEntity(typeof(EmployeeStandardLeaveGenerator))]
    [Obsolete("Not Used at this stage", false)]
    public class EmployeeStandardLeave : Entity, IRemotable, IPersistent, IEmployeeLeaveRequest, ILicense<LeaveManagementLicense>
    {
        public EmployeeLink EmployeeLink { get; set; }
        public LeaveRequestActivityLink LeaveType { get; set; }
        public DateTime From { get; set; }
        public TimeSpan FromTime { get; set; }
        public DateTime To { get; set; }
        public TimeSpan ToTime { get; set; }
        public DateTime Approved { get; set; }
        public LeaveRequestStatus Status { get; set; }
        public LeaveRequestLink LeaveRequest { get; set; }
        public StandardLeaveLink StandardLeave { get; set; }
    }
    
}