function toIsoString(value) {
  return value instanceof Date ? value.toISOString() : value;
}

export function toAdminAcquisitionDto(acquisition) {
  return {
    id: acquisition.id,
    inventoryItemId: acquisition.inventoryItemId,
    method: acquisition.method,
    costMinor: acquisition.costMinor,
    currency: acquisition.currency,
    date: acquisition.date ?? null,
    source: acquisition.source ?? null,
    location: acquisition.location ?? null,
    shippingMinor: acquisition.shippingMinor,
    taxMinor: acquisition.taxMinor,
    otherFeesMinor: acquisition.otherFeesMinor,
    estimatedTradeValueMinor: acquisition.estimatedTradeValueMinor,
    costBasisMinor: acquisition.costBasisMinor ?? null,
    notes: acquisition.notes ?? null,
    createdAt: toIsoString(acquisition.createdAt),
    updatedAt: toIsoString(acquisition.updatedAt),
  };
}