namespace IceImportDAL.DTO.IceImportPipeline;

// One mapped/resolved row for a single destination entity, produced by MapAndTransformAsync.
// Fields is what gets POSTed (as JSON) to the target entity's Save/Update WebService.
// Children is keyed by DestinationMemberEntityId — HierarchyMapper groups IceMapDetails rows
// belonging to a child entity under the parent row that owns them.
public class MappedEntityRowDTO
{
    public int RowNumber { get; set; }

    // In-memory correlation id assigned before any DB save happens (HierarchyMapper), so
    // ParentIdAssignmentResolver/FirstParentValueResolver have something stable to reference
    // even though the real DB-assigned parent id isn't known until after the parent's own save.
    public Guid CorrelationKey { get; set; } = Guid.NewGuid();

    public int EntityId { get; set; }
    public string EntityCode { get; set; } = string.Empty;

    public Dictionary<string, object?> Fields { get; set; } = new(StringComparer.OrdinalIgnoreCase);

    public Dictionary<int, List<MappedEntityRowDTO>> Children { get; set; } = new();

    // Populated by HierarchyMapper/CommitAsync once the real parent id is known — read by
    // AddonFieldAccumulator/persistence code, not by the field resolvers themselves.
    public int? ResolvedTargetId { get; set; }

    // Warning-severity findings produced by field resolvers during MapAndTransformAsync (e.g.
    // SourceValueResolver's type-coercion failures) — never silently dropped. Not part of the
    // plan's original DTO sketch (RowNumber/CorrelationKey/Fields/Children); added because a
    // resolver-level "never silently default" requirement needs SOME carrier, and
    // IIceImportPipeline.ValidateAsync merges these into its returned
    // IceImportRowValidationResultDTO.Errors alongside IRowValidator findings.
    public List<IceImportFieldErrorDTO> FieldWarnings { get; set; } = new();
}