lti-web-client/src/components/Pagination.tsx

'use client';

import { ReactNode } from 'react';
import { Icon } from '@iconify/react';

import { cn } from '@/lib/helper';

const range = (start: number, end: number) =>
  Array.from({ length: end - start + 1 }, (_, i) => i + start);

const PaginationButton = ({
  content = '',
  disabled = false,
  onClick = () => {},
}: {
  content?: ReactNode;
  disabled?: boolean;
  onClick?: () => void;
}) => (
  <button
    className={cn(
      'join-item btn btn-ghost p-2.5 rounded-lg text-sm font-medium text-gray-500 aspect-square',
      'disabled:text-gray-700 disabled:pointer-events-auto! disabled:cursor-not-allowed! disabled:bg-gray-50 disabled:active:translate-y-0'
    )}
    disabled={disabled}
    onClick={onClick}
  >
    {content}
  </button>
);

const EtcPaginationButton = ({
  startPage = 0,
  endPage = 0,
  onPageItemClick,
}: {
  startPage: number;
  endPage: number;
  onPageItemClick: (a: number) => void;
}) => {
  const pages = range(startPage, endPage);

  return (
    <>
      {startPage > 0 && endPage >= startPage && (
        <div className='dropdown dropdown-top dropdown-center'>
          <button
            tabIndex={0}
            role='button'
            className={cn(
              'join-item btn btn-ghost p-2.5 rounded-lg text-sm font-medium text-gray-500 aspect-square'
            )}
          >
            ...
          </button>

          <div className='dropdown-content'>
            <ul
              tabIndex={0}
              className='menu bg-base-100 rounded-lg z-1 w-fit min-w-max max-h-64 p-1 shadow-sm mb-2 overflow-y-auto flex-nowrap'
            >
              {pages.map((pageNumber) => (
                <li key={pageNumber}>
                  <PaginationButton
                    content={pageNumber}
                    onClick={() => onPageItemClick(pageNumber)}
                  />
                </li>
              ))}
            </ul>
          </div>
        </div>
      )}

      {(startPage === 0 || endPage < startPage) && (
        <button
          disabled
          className={cn(
            'join-item btn btn-ghost p-2.5 rounded-lg text-sm font-medium text-gray-500 aspect-square'
          )}
        >
          ...
        </button>
      )}
    </>
  );
};

const Pagination = ({
  currentPage = 1,
  totalItems = 0,
  itemsPerPage = 10,
  onPageChange,
  onPrevPage = () => {},
  onNextPage = () => {},
}: {
  currentPage: number;
  totalItems: number;
  itemsPerPage: number;
  onPageChange: (pageNumber: number) => void;
  onPrevPage: () => void;
  onNextPage: () => void;
}) => {
  const totalPages =
    Math.ceil(totalItems / itemsPerPage) === 0
      ? 1
      : Math.ceil(totalItems / itemsPerPage);

  const pageChangeHandler = (pageNumber: number) => onPageChange(pageNumber);

  return (
    <div>
      <div className='join w-full justify-between items-center gap-3'>
        <button
          disabled={currentPage === 1}
          onClick={onPrevPage}
          className={cn(
            'join-item btn btn-outline group px-3 py-2 text-sm font-semibold rounded-lg border border-gray-300 shadow-xs hidden sm:flex justify-center items-center gap-1.5',
            'disabled:bg-[initial]! disabled:text-gray-400 disabled:pointer-events-auto! disabled:cursor-not-allowed disabled:active:translate-y-0'
          )}
        >
          <Icon
            icon='uil:arrow-left'
            width={20}
            height={20}
            className='text-gray-400 group-disabled:text-gray-300'
          />{' '}
          Previous
        </button>

        {totalPages <= 7 && (
          <div className='join-item join gap-0.5'>
            {range(1, totalPages).map((pageNumber) => (
              <PaginationButton
                key={pageNumber}
                content={pageNumber}
                disabled={currentPage === pageNumber}
                onClick={() => pageChangeHandler(pageNumber)}
              />
            ))}
          </div>
        )}

        {totalPages > 7 && (
          <div className='join-item join gap-0.5'>
            <PaginationButton
              content={1}
              disabled={currentPage === 1}
              onClick={() => pageChangeHandler(1)}
            />

            {totalPages >= 2 &&
              (currentPage <= 3 || currentPage >= totalPages - 2) && (
                <PaginationButton
                  content={2}
                  disabled={currentPage === 2}
                  onClick={() => pageChangeHandler(2)}
                />
              )}

            {totalPages >= 2 &&
              currentPage > 3 &&
              currentPage < totalPages - 2 && (
                <EtcPaginationButton
                  startPage={2}
                  endPage={currentPage - 2}
                  onPageItemClick={pageChangeHandler}
                />
              )}

            {totalPages >= 3 &&
              (currentPage <= 4 || currentPage >= totalPages - 2) &&
              currentPage !== totalPages - 2 && (
                <PaginationButton
                  content={3}
                  disabled={currentPage === 3}
                  onClick={() => pageChangeHandler(3)}
                />
              )}

            {totalPages >= 7 &&
              (currentPage <= 2 || currentPage >= totalPages - 2) && (
                <EtcPaginationButton
                  startPage={
                    currentPage <= 2
                      ? currentPage + 2
                      : currentPage === totalPages - 2
                        ? 3
                        : currentPage >= totalPages - 1
                          ? 4
                          : 1
                  }
                  endPage={
                    currentPage <= 2 || currentPage >= totalPages - 1
                      ? totalPages - 3
                      : currentPage === totalPages - 2
                        ? totalPages - 4
                        : 2
                  }
                  onPageItemClick={pageChangeHandler}
                />
              )}

            {totalPages >= 3 &&
              currentPage > 4 &&
              currentPage < totalPages - 1 && (
                <PaginationButton
                  content={currentPage - 1}
                  onClick={() => pageChangeHandler(currentPage - 1)}
                />
              )}

            {totalPages >= 7 &&
              currentPage > 3 &&
              currentPage < totalPages - 2 && (
                <PaginationButton content={currentPage} disabled />
              )}

            {totalPages >= 5 &&
              currentPage > 2 &&
              currentPage < totalPages - 2 && (
                <PaginationButton
                  content={currentPage + 1}
                  onClick={() => pageChangeHandler(currentPage + 1)}
                />
              )}

            {totalPages >= 5 &&
              (currentPage <= 2 || currentPage >= totalPages - 2) && (
                <PaginationButton
                  content={totalPages - 2}
                  disabled={currentPage === totalPages - 2}
                  onClick={() => pageChangeHandler(totalPages - 2)}
                />
              )}

            {totalPages >= 6 &&
              currentPage > 2 &&
              currentPage < totalPages - 3 && (
                <EtcPaginationButton
                  startPage={
                    currentPage <= 3
                      ? currentPage + 2
                      : currentPage >= 4
                        ? currentPage + 2
                        : 1
                  }
                  endPage={
                    currentPage <= 3
                      ? totalPages - 2
                      : currentPage >= 4
                        ? totalPages - 1
                        : 0
                  }
                  onPageItemClick={pageChangeHandler}
                />
              )}

            {totalPages >= 6 &&
              (currentPage <= 3 || currentPage >= totalPages - 3) && (
                <PaginationButton
                  content={totalPages - 1}
                  disabled={currentPage === totalPages - 1}
                  onClick={() => pageChangeHandler(totalPages - 1)}
                />
              )}

            {totalPages >= 7 && (
              <PaginationButton
                content={totalPages}
                disabled={currentPage === totalPages}
                onClick={() => pageChangeHandler(totalPages)}
              />
            )}
          </div>
        )}

        <button
          disabled={currentPage === totalPages}
          onClick={onNextPage}
          className={cn(
            'join-item btn btn-outline group px-3 py-2 text-sm font-semibold rounded-lg border border-gray-300 shadow-xs hidden sm:flex justify-center items-center gap-1.5',
            'disabled:bg-[initial]! disabled:text-gray-400 disabled:pointer-events-auto! disabled:cursor-not-allowed disabled:active:translate-y-0'
          )}
        >
          Next{' '}
          <Icon
            icon='uil:arrow-right'
            width={20}
            height={20}
            className='text-gray-400 group-disabled:text-gray-300'
          />
        </button>
      </div>

      <div className='flex gap-2 mt-2 sm:hidden'>
        <button
          disabled={currentPage === 1}
          onClick={onPrevPage}
          className={cn(
            'join-item btn btn-outline group px-3 py-2 text-sm font-semibold rounded-lg border border-gray-300 shadow-xs flex justify-center items-center gap-1.5',
            'disabled:bg-[initial]! disabled:text-gray-400 disabled:pointer-events-auto! disabled:cursor-not-allowed disabled:active:translate-y-0'
          )}
        >
          <Icon
            icon='uil:arrow-left'
            width={20}
            height={20}
            className='text-gray-400 group-disabled:text-gray-300'
          />{' '}
          Previous
        </button>

        <button
          disabled={currentPage === totalPages}
          onClick={onNextPage}
          className={cn(
            'join-item btn btn-outline group px-3 py-2 text-sm font-semibold rounded-lg border border-gray-300 shadow-xs flex justify-center items-center gap-1.5',
            'disabled:bg-[initial]! disabled:text-gray-400 disabled:pointer-events-auto! disabled:cursor-not-allowed disabled:active:translate-y-0'
          )}
        >
          Next{' '}
          <Icon
            icon='uil:arrow-right'
            width={20}
            height={20}
            className='text-gray-400 group-disabled:text-gray-300'
          />
        </button>
      </div>
    </div>
  );
};

export default Pagination;