* This class handles user identification through cookies, session management, and query tracking.
 * It provides functionality for generating unique user codes, managing user sessions,
 * and tracking search result document IDs for analytics and personalization.
 *
 */
public class UserInfoHelper {

    /**
     * Default constructor for UserInfoHelper.
     */

        });
        return asJson(new ApiResponse().status(Status.OK).result());
    }

    /**
     * Deletes all old crawling info sessions except currently running ones.
     *
     * @return JSON response indicating the deletion status
     */
    // DELETE /api/admin/crawlinginfo/all
    @Execute
    public JsonResponse<ApiResult> delete$all() {

 *
 * @author FessProject
 */
public class ChatClient {

    private static final Logger logger = LogManager.getLogger(ChatClient.class);

    /** The session manager for managing chat sessions. */
    @Resource
    protected ChatSessionManager chatSessionManager;

    /** The LLM client manager for language model interactions. */
    @Resource
    protected LlmClientManager llmClientManager;

    private TimeManager timeManager;

    /** The async manager for handling asynchronous operations. */
    @Resource
    private AsyncManager asyncManager;

    /** The session manager for handling user sessions. */
    @Resource
    private SessionManager sessionManager;

    /** The Fess configuration providing application settings. */
    @Resource
    private FessConfig fessConfig;

     * <li>Applies document boosting and metadata enhancements</li>
     * <li>Sends processed documents to the search engine</li>
     * <li>Cleans up processed data and manages crawler sessions</li>
     * </ul>
     *
     * <p>The method includes error handling, retry logic, and will terminate
     * if too many empty results are encountered or if a system shutdown is requested.
     */
    @Override

                }
            }
        }

        /**
         * Deletes old documents from the search index.
         * This method removes documents that were indexed in previous
         * crawling sessions for the same data configuration, keeping
         * only the documents from the current session.
         *
         * <p>The deletion process:</p>
         * <ul>

        indexUpdater.addFinishedSessionId(sessionId);
        assertTrue(indexUpdater.finishedSessionIdList.contains(sessionId));
    }

    // Test addFinishedSessionId with multiple sessions
    @Test
    public void test_addFinishedSessionId_multiple() {
        indexUpdater.addFinishedSessionId("session1");
        indexUpdater.addFinishedSessionId("session2");

                duplicateHostHelper.init();
            } catch (final Exception e) {
                logger.warn("Could not initialize duplicateHostHelper.", e);
            }

            // delete expired sessions
            crawlingInfoService.deleteSessionIdsBefore(options.sessionId, options.name, systemHelper.getCurrentTimeAsLong());

            final List<String> webConfigIdList = options.getWebConfigIdList();