src/components/Pagination.js


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import Link from "./Link";

export default function Pagination({ pageCount, currentPage, url }) {
  let firstPage = false;
  let lastPage = false;
  let dotsPrevPage = false;
  let dotsNextPage = false;
  let urlParameterPrefix = url.includes('?') ? '&' : '?';

  return (
    <div className="pagination">
      {Array.from(Array(pageCount)).map((v, i) => {
        let page = i + 1;
        let rangePrevPage = currentPage - 2;
        let rangeNextPage = currentPage + 2;
        let PageComponent = <Link key={i} href={`${url + urlParameterPrefix}page=${page}`} className={"pagination-item" + (page == currentPage ? " pagination-item--active " : "")}>{page}</Link>;
        let DotsComponent = <div key={i} className="pagination-dots">...</div>;

        if (pageCount == 7) {
          return PageComponent;
        }

        if (currentPage == 1) rangeNextPage += 3;
        if (currentPage == 2) rangeNextPage += 2;
        if (currentPage == 3) rangeNextPage += 1;
        if (currentPage == 4) rangePrevPage -= 1;
        if (currentPage == pageCount) rangePrevPage -= 3;
        if (currentPage == pageCount - 1) rangePrevPage -= 2;
        if (currentPage == pageCount - 2) rangePrevPage -= 1;
        if (currentPage == pageCount - 3) rangeNextPage += 1;

        if (page > rangePrevPage && page < rangeNextPage) {
          return PageComponent;
        }

        if (page == 1 && rangePrevPage >= 1 && !firstPage) {
          firstPage = true;
          return PageComponent;
        }

        if (page == pageCount && rangeNextPage <= pageCount && !lastPage) {
          lastPage = true;
          return PageComponent;
        }

        if (page > currentPage && (pageCount - currentPage) > 1 && !dotsNextPage) {
          dotsNextPage = true;
          return DotsComponent;
        }

        if (page < currentPage && (currentPage - 1) > 1 && !dotsPrevPage) {
          dotsPrevPage = true;
          return DotsComponent;
        }
      })}
    </div>
  )
}