restoreSale method

Future<Set<Entitlement>> restoreSale(DVContext context, String saleId)

Gives back what revokeSale took, inside context. Returns what was granted.

Implementation

Future<Set<Entitlement>> restoreSale(DVContext context, String saleId) async {
  final DVSale? sale = await ledger.find(saleId);
  if (sale == null) {
    throw ArgumentError.value(saleId, 'saleId', 'is not a sale');
  }
  final DateTime? revokedAt = sale.revokedAt;
  if (revokedAt == null) return const <Entitlement>{};
  await ledger.setRevokedAt(saleId, null);
  context.compensate(() => ledger.setRevokedAt(saleId, revokedAt));
  final DVEntitlementGrants? granter = grants;
  if (granter == null || sale.entitlements.isEmpty) {
    return const <Entitlement>{};
  }
  final Set<Entitlement> restored = <Entitlement>{
    for (final String id in sale.entitlements) Entitlement(id),
  };
  await granter.grant(sale.customerKey, restored);
  context.compensate(() async {
    final Set<Entitlement> unheld =
        await _notHeldElsewhere(sale.customerKey, saleId, sale.entitlements);
    if (unheld.isNotEmpty) await granter.revoke(sale.customerKey, unheld);
  });
  return restored;
}