using System;

namespace GB5Shared.GOP.Qualifier.DTOs
{
    /// <summary>
    /// Cross-qualifier summary view — one row per qualifier definition.
    /// Includes active version label, total version count, and last activation date.
    /// Populated by GET_QUALIFIER_LIBRARY (single JOIN query — no N+1).
    /// </summary>
    public class QualifierLibraryDTO
    {
        public int    TenantId             { get; set; }
        public int    QualifierId          { get; set; }
        public string QualifierCode        { get; set; } = string.Empty;
        public string QualifierName        { get; set; } = string.Empty;
        /// <summary>1=Validation, 2=Enrichment, 3=Scoring, 4=Routing</summary>
        public byte   QualifierType        { get; set; }
        public string EntityCode           { get; set; } = string.Empty;
        public bool   IsSystem             { get; set; }
        public string? Description         { get; set; }
        public int    Status               { get; set; }
        public int    SortOrder            { get; set; }

        // ── Active version info (null when no version has been activated yet) ──
        public int?      ActiveVersionNo    { get; set; }
        public string?   ActiveVersionLabel { get; set; }
        public DateTime? ActiveActivatedOn  { get; set; }

        // ── Version aggregates ────────────────────────────────────────────────
        public int       TotalVersionCount  { get; set; }
        public DateTime? LastActivatedOn    { get; set; }
    }
}