using YLErp.QdpModule;
using YLErp.QdpModule.Constants;

namespace YLErp.DBModels
{
    /// <summary>
    /// 波动率构造
    /// </summary>
    public class VolatilityBuilder
    {
        readonly volatility _volatility;

        public VolatilityBuilder(DateTime quotationDate, string volMode = ConsVolInfos.defVolMode)
        {
            _volatility = new volatility
            {
                QuotationDate = quotationDate,
                InterpolationMethod = ConsVolInfos.defInterpolationMethod,
                VolSurfaceMode = string.IsNullOrEmpty(volMode) ? ConsVolInfos.defVolMode : volMode,
                VolType = ConsVolInfos.defVolType,
                UnderlyingId = null,
                ContractCode = null,
                OptId = 0,
                OptDate = DateTime.Now,
                OptName = ConsVolInfos.defOptName
            };
        }

        /// <summary>
        /// 必须设置--波动率值
        /// </summary>
        public VolatilityBuilder SetData(double vol)
        {
            _volatility.SetData(QdpVolHelper.GenerateFlatSingleVols(vol));
            return this;
        }

        /// <summary>
        /// 必须设置--波动率值
        /// </summary>
        public VolatilityBuilder SetDefaultData()
        {
            _volatility.SetData(QdpVolHelper.GenerateFlatSingleVols(ConsVolInfos.defVol));
            return this;
        }

        /// <summary>
        /// 必须设置--标的信息
        /// </summary>
        public VolatilityBuilder SetUnderlying(int underlyingId, string underlyingCode)
        {
            _volatility.UnderlyingId = underlyingId;
            _volatility.ContractCode = underlyingCode;
            return this;
        }

        /// <summary>
        /// 必须设置--标的信息
        /// </summary>
        public VolatilityBuilder SetUnderlying(IUnderlyingBasic underlying)
        {
            if (underlying is null)
            {
                throw new ArgumentNullException(nameof(underlying));
            }

            _volatility.UnderlyingId = underlying.id;
            _volatility.ContractCode = underlying.UnderlyingCode;
            return this;
        }

        /// <summary>
        /// 可选配置--波动率类型
        /// </summary>
        public VolatilityBuilder SetVolType(string volType)
        {
            _volatility.VolType = volType;
            return this;
        }

        /// <summary>
        /// 可选配置--波动率模式
        /// </summary>
        public VolatilityBuilder SetVolMode(string volMode)
        {
            _volatility.VolSurfaceMode = volMode;
            return this;
        }

        /// <summary>
        /// 可选配置--插值方法
        /// </summary>
        public VolatilityBuilder SetInterpolationMethod(string interMethod)
        {
            _volatility.InterpolationMethod = interMethod;
            return this;
        }

        /// <summary>
        /// 可选配置--操作人信息
        /// </summary>
        public VolatilityBuilder SetOpt(int optid, string optName)
        {
            _volatility.OptId = optid;
            _volatility.OptName = optName;
            return this;
        }

        /// <summary>
        /// 可选配置--用户组
        /// </summary>
        public VolatilityBuilder SetUserGroup(string userGroup)
        {
            _volatility.UserGroup = userGroup;
            return this;
        }

        public volatility Build(IUnderlyingBasic underlying)
        {
            return SetUnderlying(underlying).Build();
        }

        public volatility Build(double vol)
        {
            return SetData(vol).Build();
        }

        public volatility Build()
        {
            if (string.IsNullOrEmpty(_volatility.ContractCode))
            {
                throw new ArgumentException("ContractCode 必须有值", nameof(_volatility.ContractCode));
            }

            if (_volatility.QuotationDate.Year < 2000)
            {
                throw new ArgumentException("QuotationDate 必须为有效值,合约代码:" + _volatility.ContractCode, nameof(_volatility.QuotationDate));
            }

            if (string.IsNullOrEmpty(_volatility.VolType))
            {
                throw new ArgumentException("VolType 必须有值,合约代码:" + _volatility.ContractCode, nameof(_volatility.VolType));
            }

            if (string.IsNullOrEmpty(_volatility.InterpolationMethod))
            {
                throw new ArgumentException("InterpolationMethod 必须有值,合约代码:" + _volatility.ContractCode, nameof(_volatility.InterpolationMethod));
            }

            if (string.IsNullOrEmpty(_volatility.VolSurfaceMode))
            {
                throw new ArgumentException("VolSurfaceMode 必须有值,合约代码:" + _volatility.ContractCode, nameof(_volatility.VolSurfaceMode));
            }

            if (string.IsNullOrEmpty(_volatility.Data))
            {
                throw new ArgumentException("VolData 必须有值,合约代码:" + _volatility.ContractCode, nameof(_volatility.Data));
            }

            return _volatility;
        }

        /// <summary>
        /// 
        /// </summary>
        public static VolatilityBuilder CreateMoneynessVolBuilder(DateTime quotationDate, string volType = ConsVolInfos.defVolType)
        {
            return new VolatilityBuilder(quotationDate, "MoneynessVol").SetVolType(volType);
        }
    }
}