using System;
using System.Configuration;

namespace ChadSoft.Edificator
{
    internal abstract class WisdomHistoryBase : IWisdomHistory
    {
        private static readonly TimeSpan DefaultRecentlySentTimespan = TimeSpan.FromDays(14);

        internal TimeSpan RecentlySentTimespan
        {
            get
            {
                if(_recentlySentTimespan == null)
                {
                    string recentTimeSpan = ConfigurationManager.AppSettings["WisdomHistory.RecentTimeSpanInDays"];
                    TimeSpan timeSpan;
                    if (TimeSpan.TryParse(recentTimeSpan, out timeSpan))
                        _recentlySentTimespan = timeSpan;
                }

                return _recentlySentTimespan.GetValueOrDefault(DefaultRecentlySentTimespan);
            }
            set { _recentlySentTimespan = value; }
        }
        private TimeSpan? _recentlySentTimespan;

        public abstract bool HasBeenSentRecently(WisdomBit wisdom);
        public abstract void WisdomSent(WisdomBit wisdom);
    }
}