package com.ruoyi.ai.context;
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import com.ruoyi.framework.security.LoginUser;
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import org.springframework.stereotype.Component;
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import org.springframework.util.StringUtils;
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import java.time.Duration;
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import java.time.Instant;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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@Component
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public class AiSessionUserContext {
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private final Map<String, LoginUser> loginUserByMemoryId = new ConcurrentHashMap<>();
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private final Map<String, Instant> lastAccessTimeByMemoryId = new ConcurrentHashMap<>();
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private static final Duration SESSION_TIMEOUT = Duration.ofHours(24);
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public void bind(String memoryId, LoginUser loginUser) {
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if (!StringUtils.hasText(memoryId) || loginUser == null) {
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return;
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}
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loginUserByMemoryId.put(memoryId, loginUser);
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lastAccessTimeByMemoryId.put(memoryId, Instant.now());
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}
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public LoginUser get(String memoryId) {
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if (!StringUtils.hasText(memoryId)) {
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return null;
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}
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if (isExpired(memoryId)) {
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remove(memoryId);
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return null;
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}
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lastAccessTimeByMemoryId.put(memoryId, Instant.now());
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return loginUserByMemoryId.get(memoryId);
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}
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public void remove(String memoryId) {
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if (!StringUtils.hasText(memoryId)) {
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return;
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}
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loginUserByMemoryId.remove(memoryId);
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lastAccessTimeByMemoryId.remove(memoryId);
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}
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public void cleanExpiredSessions() {
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Instant now = Instant.now();
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lastAccessTimeByMemoryId.entrySet().removeIf(entry -> {
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boolean expired = Duration.between(entry.getValue(), now).compareTo(SESSION_TIMEOUT) > 0;
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if (expired) {
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loginUserByMemoryId.remove(entry.getKey());
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}
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return expired;
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});
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}
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private boolean isExpired(String memoryId) {
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Instant lastAccess = lastAccessTimeByMemoryId.get(memoryId);
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if (lastAccess == null) {
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return true;
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}
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return Duration.between(lastAccess, Instant.now()).compareTo(SESSION_TIMEOUT) > 0;
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}
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}
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