@RequestMapping(method = RequestMethod.GET)
public Page<Product> find(
  @PageableDefault(sort = "id", direction = DESC) final Pageable pageable,
  @RequestParam(required = false) final String nameLike,
  @RequestParam(required = false) final Long priceFrom,
  @RequestParam(required = false) final Long priceTo,
  @RequestParam(defaultValue = "true") final boolean inStock,
  @RequestParam(required = false) final Set<String> categoriesIn) {

  Specifications<Product> specifications = Specifications.where(stockAvaiable(inStock));

  if (StringUtils.isNotEmpty(nameLike)) {
    specifications = specifications.and(nameLike(nameLike));
  }
  if (Objects.nonNull(priceFrom)) {
    specifications = specifications.and(priceGraterThanOrEqualsTo(priceFrom));
  }
  if (Objects.nonNull(priceTo)) {
    specifications = specifications.and(priceLessThan(priceTo));
  }
  if (CollectionUtils.isNotEmpty(categoriesIn)) {
    specifications = specifications.and(categoriesIn(categoriesIn));
  }
  specifications = specifications.and(stockAvaiable(inStock));

  return repository.findAll(specifications, pageable);
}