/// Egy jelgerjesztési/tartalék forráspont a `terepi_seged_measure_source_points`
/// táblából. Tisztán online — nincs helyi tükör.
class MeasureSourcePoint {
  final String id;
  final String projectId;
  final double lineNumber;
  final double pointNumber;
  final int sequenceIndex;
  final double eovX;
  final double eovY;
  final double? elevation;
  final double? linkedReceiverLineNumber;

  /// 0 = tartalék pont, 1 = jelgerjesztés helye.
  final int planState;
  final DateTime? plannedAcquisitionDate;
  final int? fieldSequence;
  final String? sourceType;
  final bool isActive;

  const MeasureSourcePoint({
    required this.id,
    required this.projectId,
    required this.lineNumber,
    required this.pointNumber,
    required this.sequenceIndex,
    required this.eovX,
    required this.eovY,
    this.elevation,
    this.linkedReceiverLineNumber,
    required this.planState,
    this.plannedAcquisitionDate,
    this.fieldSequence,
    this.sourceType,
    required this.isActive,
  });

  bool get isReserve => planState == 0;
  bool get isShotLocation => planState == 1;

  factory MeasureSourcePoint.fromMap(Map<String, dynamic> m) =>
      MeasureSourcePoint(
        id: m['id'] as String,
        projectId: m['project_id'] as String,
        lineNumber: (m['line_number'] as num).toDouble(),
        pointNumber: (m['point_number'] as num).toDouble(),
        sequenceIndex: m['sequence_index'] as int,

        // FIGYELEM: a terepi_seged_measure_source_points táblában az
        // eov_x/eov_y oszlopnevek FEL VANNAK CSERÉLVE a valódi magyar
        // EOV-konvencióhoz képest (az "eov_x" oszlop tartalmazza a
        // ténylegesen Y-nak/keletinek számító, ~640 000 körüli
        // értéket, az "eov_y" a ténylegesen X-nek/északinak számítót,
        // ~185 000 körülit) — itt kompenzáljuk, hogy a modell mezői
        // (eovX/eovY) a kód többi részével KONZISZTENS, valódi EOV-
        // jelentést hordozzanak.
        eovX: (m['eov_y'] as num).toDouble(),
        eovY: (m['eov_x'] as num).toDouble(),
        elevation: (m['elevation'] as num?)?.toDouble(),
        linkedReceiverLineNumber:
            (m['linked_receiver_line_number'] as num?)?.toDouble(),
        planState: m['plan_state'] as int,
        plannedAcquisitionDate: m['planned_acquisition_date'] != null
            ? DateTime.parse(m['planned_acquisition_date'] as String)
            : null,
        fieldSequence: m['field_sequence'] as int?,
        sourceType: m['source_type'] as String?,
        isActive: m['is_active'] as bool,
      );
}