using AnalyticsDAL.DTO.Warehouse;

namespace AnalyticsDAL.DTO.AnalysisAggregation.V1
{
    public class AnalysisMeasureDefinitionDTO
    {
        /// <summary>For Warehouse-kind datasets: the measure's ColumnName on the fact table
        /// (must match a MWAREHOUSEMEASURE row for the resolved fact). For AnalysisQuery/
        /// ApiService-kind datasets: whatever field name that source uses.</summary>
        public string Field { get; set; } = string.Empty;

        public string Label { get; set; } = string.Empty;

        /// <summary>Reuses AnalysisQB/MREPORTVIEWFIELDS numbering: 0 None,1 SUM,3 AVG,5 COUNT,7 MAX,8 MIN.</summary>
        public byte Aggregation { get; set; }

        public string? Format { get; set; }

        /// <summary>Populated from MWAREHOUSEMEASURE.ADDITIVITYTYPE for Warehouse-kind datasets
        /// (echoed back in AnalysisResult.Meta for the frontend's ChartRecommenderService, Phase 2+);
        /// defaults to Additive for AnalysisQuery/ApiService-kind datasets, which have no
        /// classification metadata yet.</summary>
        public AdditivityType Additivity { get; set; } = AdditivityType.Additive;

        /// <summary>Only meaningful when Additivity == SemiAdditive.</summary>
        public string? SemiAdditiveDimension { get; set; }
    }
}