public interface ITestRecord
{
    /// <summary>主键ID，自增</summary>
    int Id { get; set; }

    /// <summary>工位编号（1~3）</summary>
    int StationId { get; set; }

    /// <summary>测试日期时间</summary>
    DateTime TestDate { get; set; }

    /// <summary>测试人员姓名</summary>
    string Tester { get; set; }
    // 公共字段
}

/// <summary>
/// 泡点法测试记录实体，用于数据库存储。
/// 对应 GB/T 32361-2015 标准中的最大孔径测试记录。
/// </summary>
public class BubblePointEntity : ITestRecord
{
    /// <summary>主键ID，自增</summary>
    public int Id { get; set; }

    /// <summary>工位编号（1~3）</summary>
    public int StationId { get; set; }

    /// <summary>测试日期时间</summary>
    public DateTime TestDate { get; set; }

    /// <summary>测试人员姓名</summary>
    public string? Tester { get; set; }

    /// <summary>膜类型（平板膜/中空纤维膜）</summary>
    public string? SampleType { get; set; }

    /// <summary>样品规格（如直径、厚度等）</summary>
    public string? SampleSpec { get; set; }

    /// <summary>测试时室温（°C）</summary>
    public double? RoomTemperature { get; set; }

    /// <summary>膜在测试液体中的浸润时间（小时）</summary>
    public double? SoakingTime { get; set; }

    /// <summary>测试液体名称（如“水”、“乙醇”等）</summary>
    public string? LiquidName { get; set; }

    /// <summary>测试液体的表面张力（mN/m，25°C）</summary>
    public double? LiquidSurfaceTension { get; set; }

    /// <summary>测试液体生产厂家（可选）</summary>
    public string? LiquidManufacturer { get; set; }

    /// <summary>泡点压力数值</summary>
    public double? BubblePointPressure { get; set; }

    /// <summary>泡点压力单位（Pa / cmHg / psi）</summary>
    public string? PressureUnit { get; set; }

    /// <summary>计算得出的最大孔径（μm）</summary>
    public double? MaxPoreSize { get; set; }
}

/// <summary>
/// 孔分布测试记录实体，用于数据库存储。
/// 对应 GB/T 32361-2015 标准中的平均流量法测试记录。
/// </summary>
public class PoreDistributionEntity : ITestRecord
{
    /// <summary>主键ID，自增</summary>
    public int Id { get; set; }

    /// <summary>工位编号（1~3）</summary>
    public int StationId { get; set; }

    /// <summary>测试日期时间</summary>
    public DateTime TestDate { get; set; }

    /// <summary>测试人员姓名</summary>
    public string Tester { get; set; }

    /// <summary>膜类型（平板膜/中空纤维膜）</summary>
    public string SampleType { get; set; }

    /// <summary>样品规格（如直径、厚度等）</summary>
    public string SampleSpec { get; set; }

    /// <summary>测试时室温（°C）</summary>
    public double RoomTemperature { get; set; }

    /// <summary>膜在测试液体中的浸润时间（小时）</summary>
    public double SoakingTime { get; set; }

    /// <summary>测试液体名称（如“水”、“乙醇”等）</summary>
    public string LiquidName { get; set; }

    /// <summary>测试液体的表面张力（mN/m，25°C）</summary>
    public double LiquidSurfaceTension { get; set; }

    /// <summary>测试液体生产厂家（可选）</summary>
    public string LiquidManufacturer { get; set; }

    /// <summary>压力单位（Pa / cmHg / psi）</summary>
    public string PressureUnit { get; set; }

    /// <summary>泡点压力（可选，用于记录）</summary>
    public double BubblePointPressure { get; set; }

    /// <summary>计算得出的平均孔径（μm）</summary>
    public double AveragePoreSize { get; set; }

    /// <summary>导航属性：该测试记录对应的所有压力-流量数据点</summary>
    public List<DataPointEntity> DataPoints { get; set; }
}

/// <summary>
/// 孔分布测试的数据点实体，存储每个压力点对应的湿膜和干膜流量。
/// 与 PoreDistributionEntity 构成一对多的关系。
/// </summary>
public class DataPointEntity
{
    /// <summary>主键ID，自增</summary>
    public int Id { get; set; }

    /// <summary>关联的孔分布测试记录ID</summary>
    public int PoreDistributionId { get; set; }

    /// <summary>测试压力值，单位由所属记录的 PressureUnit 决定</summary>
    public double Pressure { get; set; }

    /// <summary>湿膜流量（L/min）</summary>
    public double WetFlow { get; set; }

    /// <summary>干膜流量（L/min）</summary>
    public double DryFlow { get; set; }

    /// <summary>导航属性：所属的孔分布测试记录</summary>
    public PoreDistributionEntity PoreDistribution { get; set; }
}