try {
            return facetCache.get(query + "\n" + permissionKey, () -> {
                final SearchHelper searchHelper = ComponentUtil.getSearchHelper();
                final SearchForm params = new SearchForm() {
                    @Override
                    public int getPageSize() {
                        return 0;

| Task | Files to Review |
|------|-----------------|
| Add admin feature | `app/web/admin/*/`, `app/service/`, `webapp/WEB-INF/view/admin/` |
| Add API endpoint | `api/`, `app/web/api/` |
| Modify search | `helper/SearchHelper.java`, `helper/QueryHelper.java` |
| Add crawl config | `opensearch/config/`, `crawler/` |
| Add SSO | `sso/`, `fess_sso.xml` |
| Add i18n | `fess_label_*.properties`, `fess_message_*.properties` |

        if (isLoginRequired()) {
            return redirectToLogin();
        }

        final Map<String, Object> doc =
                searchHelper.getDocumentByDocId(form.docId, queryFieldConfig.getResponseFields(), getUserBean()).orElse(null);
        final String url = DocumentUtil.getValue(doc, fessConfig.getIndexFieldThumbnail(), String.class);

        if (isLoginRequired()) {
            return redirectToLogin();
        }

        Map<String, Object> doc = null;
        try {
            doc = searchHelper.getDocumentByDocId(form.docId, queryFieldConfig.getCacheResponseFields(), getUserBean()).orElse(null);
        } catch (final Exception e) {
            logger.warn("Failed to request: {}", form.docId, e);
        }

            form.q = null;
            return redirectToRoot();
        }

        try {
            buildFormParams(form);
            form.lang = searchHelper.getLanguages(request, form);
            final WebRenderData renderData = new WebRenderData();
            searchHelper.search(form, renderData, getUserBean());
            return asHtml(virtualHost(path_SearchJsp)).renderWith(data -> {
                if (form.hasConditionQuery()) {

            return new ChatSearchResult(Collections.emptyList(), null, 0L);
        }
        return null;
    }

    /**
     * Searches for documents relevant to the user's query.
     * SearchHelper applies role-based access control filtering through
     * SearchRequestType.JSON and the role filter mechanism, ensuring
     * users only see documents they are authorized to access.
     * <p>

     *         or empty if no search parameters were found
     */
    protected OptionalThing<HtmlResponse> redirectToSearchPage() {
        final RequestParameter[] searchParameters = searchHelper.getSearchParameters();
        if (searchParameters.length > 0) {
            final List<String> paramList = new ArrayList<>();
            for (final RequestParameter param : searchParameters) {