using System;
using System.Collections.Generic;
using System.Data.SqlTypes;
using System.Linq;
using System.Linq.Expressions;
using InABox.Core;

namespace Comal.Classes
{
    public interface IEmployeeActivity
    {
        EmployeeLink Employee { get; set; }
        
        ActivityLink Activity { get; set; }        
    }
    
    public class EmployeeActivityCrossGenerator : AutoEntityCrossGenerator<IEmployeeActivity,EmployeeRole,RoleActivity>
    {
        public override Expression<Func<EmployeeRole, Guid>> LeftProperty => x => x.EmployeeLink.ID;
        public override Expression<Func<IEmployeeActivity, Guid>> LeftMapping => x => x.Employee.ID;
        public override Expression<Func<EmployeeRole, Guid>> LeftLink => x => x.RoleLink.ID;
        
        public override Expression<Func<RoleActivity, Guid>> RightProperty => x => x.Activity.ID;
        public override Expression<Func<IEmployeeActivity, Guid>> RightMapping => x => x.Activity.ID;
        public override Expression<Func<RoleActivity, Guid>> RightLink => x => x.Role.ID;

        public override bool Distinct => true;

        public override Column<IEmployeeActivity>[] IDColumns => new Column<IEmployeeActivity>[]
        {
            new Column<IEmployeeActivity>(x => x.Employee.ID),
            new Column<IEmployeeActivity>(x => x.Activity.ID)
        };
    }
    
    [UserTracking(typeof(Employee))]
    [AutoEntity(typeof(EmployeeActivityCrossGenerator))]
    public class EmployeeActivity : Entity, IRemotable, IPersistent, IEmployeeActivity,
        ILicense<CoreLicense>
    {
        public EmployeeLink Employee { get; set; }

        public ActivityLink Activity { get; set; }
    }
}