export function toAdminProviderMappingDto(mapping) {
  return {
    id: mapping.id,
    productId: mapping.productId,
    providerId: mapping.providerId,
    mappingType: mapping.mappingType,
    externalIdentifier: mapping.externalIdentifier ?? null,
    searchQuery: mapping.searchQuery ?? null,
    sourceUrl: mapping.sourceUrl ?? null,
    status: mapping.status,
    metadata: mapping.metadata ?? {},
    createdAt: mapping.createdAt instanceof Date ? mapping.createdAt.toISOString() : mapping.createdAt,
    updatedAt: mapping.updatedAt instanceof Date ? mapping.updatedAt.toISOString() : mapping.updatedAt,
  };
}