export type FanavaranVehicleKindRow = {
  Id?: unknown;
  VehicleGroupId?: unknown;
  IsActive?: unknown;
  Caption?: unknown;
};

export type FanavaranVehicleUseTypeRow = {
  Id?: unknown;
  VehicleGroupId?: unknown;
  IsActive?: unknown;
  Caption?: unknown;
};

function asPositiveId(value: unknown): number | null {
  if (value === null || value === undefined) return null;
  const id = Number(value);
  return Number.isFinite(id) && id > 0 ? id : null;
}

export function vehicleGroupIdForKind(
  kinds: unknown,
  vehicleKindId: number,
): number | null {
  if (!Array.isArray(kinds)) return null;
  const match = kinds.find(
    (row) => asPositiveId((row as FanavaranVehicleKindRow)?.Id) === vehicleKindId,
  ) as FanavaranVehicleKindRow | undefined;
  return asPositiveId(match?.VehicleGroupId);
}

/**
 * Fanavaran filters AccidentVehicleUsedId by the policy car's VehicleGroupId.
 * `preferredId` is the vehicle UsedId from VIN inquiry / vehicle GET — never a Mongo tenant default.
 */
export function selectAccidentVehicleUsedId(
  useTypes: unknown,
  vehicleGroupId: number | null,
  preferredId: number | null,
): number | null {
  if (!Array.isArray(useTypes) || vehicleGroupId == null) {
    return preferredId;
  }

  const active = useTypes.filter((row) => {
    const item = row as FanavaranVehicleUseTypeRow;
    return (
      item?.IsActive === 1 &&
      asPositiveId(item.VehicleGroupId) === vehicleGroupId &&
      asPositiveId(item.Id) != null
    );
  }) as FanavaranVehicleUseTypeRow[];

  if (active.length === 0) {
    return preferredId;
  }

  const preferred = active.find((row) => asPositiveId(row.Id) === preferredId);
  if (preferred && preferredId != null) {
    return preferredId;
  }

  const personal = active.find((row) =>
    String(row.Caption ?? "").includes("شخص"),
  );
  if (personal) {
    return asPositiveId(personal.Id) ?? preferredId;
  }

  return asPositiveId(active[0].Id) ?? preferredId;
}