using YLErp.BLL;
using YLErp.Modules.DataProviderModule;

namespace YLErp.Modules.UnderlyingModule
{
    /// <summary>
    /// 标的价格服务
    /// </summary>
    public class UnderlyingSpotPriceService : YLBaseService
    {
        public UnderlyingSpotPriceService(OptUserInfo userInfo) : base(userInfo)
        {

        }

        /// <summary>
        /// 获取标的价格
        /// </summary>
        public UnderlyingSpotPriceResult GetSpotPrice(UnderlyingSpotPriceRequest req)
        {
            if (req is null)
            {
                throw new ArgumentNullException(nameof(req));
            }

            if (string.IsNullOrEmpty(req.UnderlyingCode))
            {
                throw new ServiceException("缺少标的代码");
            }

            var um = DataCacheProvider.GetUnderlyingDataSource().GetData(req.UnderlyingCode);

            if (um == null)
            {
                throw new ServiceException("标的信息未找到:" + req.UnderlyingCode);
            }

            var price = um.Price;

            SyntheticPriceModel synthetic = null;

            if (um.CommodityCode == "组合标的")
            {
                using var syntheService = new SyntheticUnderlyingPriceService(OptUser);
                synthetic = req.ValueDate != null && req.ValueDate != DateTime.MinValue
                       ? syntheService.GetPriceModel(req.UnderlyingCode, req.ValueDate.Value)
                       : syntheService.GetPriceModel(req.UnderlyingCode);
                synthetic ??= new SyntheticPriceModel();
            }
            else if (req.ValueDate != null && req.ValueDate != valuedateBLL.ValueDate
                && EodPriceQueryService.TryGetEodPrice(req.ValueDate.Value, req.UnderlyingCode, out var eodPrice))
            {
                price = eodPrice.ClosePrice;
            }

            return new UnderlyingSpotPriceResult { SpotPrice = synthetic?.Price ?? price, Synthetic = synthetic };
        }
    }

    /// <summary>
    /// 标的价格请求
    /// </summary>
    public class UnderlyingSpotPriceRequest
    {
        /// <summary>
        /// 标的代码
        /// </summary>
        public string UnderlyingCode { get; set; }

        /// <summary>
        /// 取值日期
        /// </summary>
        public DateTime? ValueDate { get; set; }
    }

    /// <summary>
    /// 定价页面期初标的价格
    /// </summary>
    public class UnderlyingSpotPriceResult
    {
        /// <summary>
        /// 标的价格
        /// </summary>
        public double? SpotPrice { get; set; }

        /// <summary>
        /// 组合标的价格信息
        /// </summary>
        public SyntheticPriceModel Synthetic { get; set; }
    }
}