@ministryofjustice/probation-search-frontend/utils/pagination.js

A shared UI component to search for probation cases from within your Express/Nunjucks application

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = getPaginationLinks;
function getPaginationLinks(currentPage, totalPages, totalResults, pathFn, pageSize = 10, maxPagesToShow = 7) {
    const firstPage = firstPageToShow(currentPage, maxPagesToShow);
    const lastPage = lastPageToShow(currentPage, maxPagesToShow, totalPages);
    return {
        from: ((currentPage - 1) * pageSize + 1).toLocaleString('en-GB'),
        to: Math.min(currentPage * pageSize, totalResults).toLocaleString('en-GB'),
        total: totalResults.toLocaleString('en-GB'),
        next: currentPage < totalPages ? pathFn(currentPage + 1) : undefined,
        prev: currentPage > 1 ? pathFn(currentPage - 1) : undefined,
        items: getPageLinks(firstPage, lastPage, currentPage, totalPages, pathFn),
    };
}
function firstPageToShow(currentPage, maxPagesToShow) {
    return Math.max(currentPage - Math.floor(maxPagesToShow / 2), 1);
}
function lastPageToShow(currentPage, maxPagesToShow, totalPages) {
    return Math.min(currentPage + Math.floor(maxPagesToShow / 2), totalPages);
}
function getPageLinks(firstPage, lastPage, currentPage, totalPages, pathFn) {
    return [
        ...(firstPage > 1 ? [{ ellipsis: true }] : []),
        ...Array.from({ length: lastPage - firstPage + 1 }, (_, i) => firstPage + i).map(pageNumber => ({
            number: pageNumber,
            current: currentPage === pageNumber,
            href: pathFn(pageNumber),
        })),
        ...(lastPage < totalPages ? [{ ellipsis: true }] : []),
    ];
}
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