import org.lastaflute.web.util.LaResponseUtil;
import org.opensearch.script.Script;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * The API manager for search operations.
 */
public class SearchApiManager extends BaseApiManager {

import com.nimbusds.openid.connect.sdk.AuthenticationResponseParser;
import com.nimbusds.openid.connect.sdk.AuthenticationSuccessResponse;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;

/**
 * Microsoft Entra ID SSO authenticator implementation.
 * Handles OAuth2/OpenID Connect authentication flow with Entra ID.
 */

import com.google.common.cache.CacheBuilder;
import com.ibm.icu.text.SimpleDateFormat;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.ServletContext;
import jakarta.servlet.SessionTrackingMode;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;

/**
 * Helper class for handling view-related operations in the Fess search system.

		<dependency>
			<groupId>jakarta.servlet.jsp.jstl</groupId>
			<artifactId>jakarta.servlet.jsp.jstl-api</artifactId>
			<version>${jakarta.jstl.api.version}</version>
			<!-- <scope>provided</scope> -->
			<exclusions>
				<exclusion>
					<groupId>jakarta.el</groupId>
					<artifactId>jakarta.el-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>jakarta.servlet</groupId>

import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.util.LaRequestUtil;

import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;

/**
 * Client class for RAG (Retrieval-Augmented Generation) chat functionality.
 *
 * Orchestrates the multi-phase RAG workflow including session management,

import org.lastaflute.web.LastaWebKey;
import org.lastaflute.web.util.LaRequestUtil;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

import jakarta.servlet.http.HttpSession;

/**
 * Abstract base class for LLM client implementations.
 *
 * Provides shared infrastructure (HTTP client, availability checking) and