using YLErp.BLL;

namespace YLErp.Modules.DataProviderModule
{
    /// <summary>
    /// 日终风险计算数据提供器
    /// </summary>
    public class EodRiskCalcDataProvider
    {
        private readonly EodPriceProvider _eodPriceProvider;
        private readonly UnderlyingProvider _underlyingProvider;

        public EodRiskCalcDataProvider(DateTime valueDate, DateTime? startDate = null)
        {
            _underlyingProvider = new UnderlyingProvider(OptUserInfo.SystemUser);
            _underlyingProvider.Initialize(startDate);
            _eodPriceProvider = new EodPriceProvider(valueDate);
        }

        /// <summary>
        /// 根据代码获取标的信息
        /// 涉及到历史标的所以不从缓存中获取
        /// </summary>
        public underlying_manager GetUnderlying(string underlyingCode)
        {
            if (underlyingCode is null)
            {
                throw new ArgumentNullException(nameof(underlyingCode));
            }
            return _underlyingProvider.GetUnderlying(underlyingCode);
        }

        /// <summary>
        /// 获取标的收盘价或结算价(如果标的在取值日之前已到期，则取标的到期日的收盘价或结算价)
        /// </summary>
        public bool TryGetEodPrice(string underlyingCode, SettlementTypeEnum settlementType, out double price)
        {
            return _eodPriceProvider.TryGetPrice(underlyingCode, settlementType, out price);
        }

        /// <summary>
        /// 返回数据查询接口(现在返回的是EF查询接口)
        /// </summary>
        public IQueryable<underlying_manager> GetUnderlyingQuery()
        {
            return underlying_managerBLL.GetQuery();
        }
    }
}