import '../utils/sync_run_formatters.dart';

class BackfillSyncItem {
  const BackfillSyncItem({
    required this.slotStart,
    required this.symbols,
    this.slotStartWire,
  });

  final DateTime slotStart;
  final List<String> symbols;

  /// Exact `slotStart` string from the sync-run API (Alpaca `start` param).
  final String? slotStartWire;

  /// Wire form for DB spot checks: `raw->>'slot_start'` and Alpaca `start`.
  String get fetchSlotStartWire =>
      slotStartWire ?? formatMarketHistorySlotWire(slotStart);

  factory BackfillSyncItem.fromJson(Map<String, dynamic> json) {
    final String slotStartRaw = json['slotStart'] as String;
    return BackfillSyncItem(
      slotStart: DateTime.parse(slotStartRaw).toUtc(),
      slotStartWire: slotStartRaw,
      symbols: (json['symbols'] as List<dynamic>? ?? <dynamic>[])
          .map((dynamic value) => value.toString())
          .toList(growable: false),
    );
  }
}