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

namespace Tanshu.Accounts.Contracts
{
    public static class Session
    {
        private static Dictionary<string, bool> _roles;
        private static User _currentUser;
        public static bool IsAuthenticated { get; private set; }
        public static User User
        {
            get
            {
                return _currentUser;
            }
            set
            {
                if (value != null)
                {
                    _currentUser = value;
                    IsAuthenticated = true;
                }
                else
                {
                    _currentUser = null;
                    IsAuthenticated = false;
                    _roles = null;
                    Cache.ClearRoles();
                }
            }
        }
        public static bool IsAllowed(string role)
        {
            if (_currentUser == null)
                return false;
            if (_roles == null)
                _roles = new Dictionary<string, bool>();
            if (!_roles.ContainsKey(role))
                _roles.Add(role, Cache.UserRoles(_currentUser.UserID).Any(x => x.Name == role));
            return _roles[role];
        }
    }
}