using System;
using System.Linq;
using Tanshu.Accounts.Entities.Auth;
using System.Collections.Generic;

namespace Tanshu.Accounts.Repository
{
    public class GroupBI : UnitOfWork<Group>
    {
        public new IList<Group> List()
        {
            return _session.QueryOver<Group>()
                .OrderBy(x => x.Name).Asc
                .List();

        }
        public IList<Role> RoleList()
        {
            return _session.QueryOver<Role>()
                   .OrderBy(x => x.Name).Asc
                   .List();
        }
        public void Update(Group group, IEnumerable<Role> selectedRoles)
        {
            var roles = new Dictionary<Role, bool>();
            foreach (var item in RoleList())
            {
                roles.Add(item, selectedRoles.Any(x => x.RoleID == item.RoleID));
            }
            foreach (var item in roles)
            {
                var id = item.Key.RoleID;
                var ug = group.RoleGroups.SingleOrDefault(x => x.Role.RoleID == id);
                if (item.Value && ug == null)
                {
                    var rg = new RoleGroup() { Group = group, Role = item.Key };
                    _session.Save(rg);
                }
                else if (!item.Value && ug != null)
                {
                    group.RoleGroups.Remove(ug);
                    _session.Delete(ug);
                }
            }
        }
    }
}