namespace Yw.Bimface
{
    /// <summary>
    /// 过期时间
    /// </summary>
    internal class ExpireTime
    {
        private const int _accessTokenAllowance = 2;//AccessToken的时间余量(小时)
        private const int _viewTokenHours = 12;//ViewToken的生命周期(小时)
        private const int _viewTokenAllowance = 10;//ViewToken的时间余量（分钟）

        //AccessToken的过期时间
        private DateTime _accessTokenExpireTime;

        //ViewToken的获取时间字典
        private Dictionary<long, DateTime> _viewTokenGetTimeDic = new Dictionary<long, DateTime>();

        /// <summary>
        /// 设置AccessToken获取时间
        /// </summary>
        /// <param name="datetime"></param>
        internal void SetAccessTokenExpireTime(DateTime datetime)
        {
            _accessTokenExpireTime = datetime;
        }

        /// <summary>
        /// 验证AccessToken是否过期
        /// </summary>
        /// <returns>过期返回True</returns>
        internal bool ValidAccessTokenExpiration(DateTime datetime)
        {
            if (datetime.AddHours(_accessTokenAllowance) > _accessTokenExpireTime)
                return true;
            return false;
        }

        /// <summary>
        /// 设置ViewToken的获取时间
        /// </summary>
        /// <param name="id"></param>
        /// <param name="datetime"></param>
        internal void SetViewTokenGetTime(long id, DateTime datetime)
        {
            if (_viewTokenGetTimeDic.ContainsKey(id))
                _viewTokenGetTimeDic[id] = datetime;
            else
                _viewTokenGetTimeDic.Add(id, datetime);
        }

        /// <summary>
        /// 验证ViewToken是否过期
        /// </summary>
        /// <param name="id"></param>
        /// <param name="datetime"></param>
        /// <returns></returns>
        internal bool ValidViewTokenExpiration(long id, DateTime datetime)
        {
            if (!_viewTokenGetTimeDic.ContainsKey(id))
                return true;
            var gettime = _viewTokenGetTimeDic[id];
            if (gettime.AddHours(_viewTokenHours).AddMinutes(-_viewTokenAllowance) > datetime)
                return false;
            return true;
        }

        /// <summary>
        /// 移除ViewToken时间
        /// </summary>
        /// <param name="id"></param>
        internal void RemoveViewTokenTime(long id)
        {
            if (_viewTokenGetTimeDic.ContainsKey(id))
                _viewTokenGetTimeDic.Remove(id);
        }


    }
}