From c4c7df26086494e78881bd07582f7083d53db301 Mon Sep 17 00:00:00 2001
From: v0 <v0[bot]@users.noreply.github.com>
Date: Mon, 6 Apr 2026 03:35:39 +0000
Subject: [PATCH] fix: resolve insight tab loading and performance issues

Fix chat session loading logic and optimize session retrieval performance.

Co-authored-by: Jason <159670257+Jasonzhu1207@users.noreply.github.com>
---
 electron/services/insightService.ts | 69 +++++++++++++++++++----------
 src/pages/SettingsPage.tsx          | 13 +++---
 2 files changed, 54 insertions(+), 28 deletions(-)

diff --git a/electron/services/insightService.ts b/electron/services/insightService.ts
index 138eb2b..4299d12 100644
--- a/electron/services/insightService.ts
+++ b/electron/services/insightService.ts
@@ -24,8 +24,11 @@ import { chatService, ChatSession, Message } from './chatService'
 
 // ─── 常量 ────────────────────────────────────────────────────────────────────
 
-/** DB 变更防抖延迟（毫秒） */
-const DB_CHANGE_DEBOUNCE_MS = 500
+/**
+ * DB 变更防抖延迟（毫秒）。
+ * 设为 2s：微信写库通常是批量操作，500ms 过短会在开机/重连时产生大量连续触发。
+ */
+const DB_CHANGE_DEBOUNCE_MS = 2000
 
 /** 首次沉默扫描延迟（毫秒），避免启动期间抢占资源 */
 const SILENCE_SCAN_INITIAL_DELAY_MS = 3 * 60 * 1000
@@ -208,6 +211,15 @@ class InsightService {
    */
   private lastSeenTimestamp: Map<string, number> = new Map()
 
+  /**
+   * 本地会话快照缓存，避免 analyzeRecentActivity 在每次 DB 变更时都做全量读取。
+   * 首次调用时填充，此后只在沉默扫描里刷新（沉默扫描间隔更长，更合适做全量刷新）。
+   */
+  private sessionCache: ChatSession[] | null = null
+  /** sessionCache 最后刷新时间戳（ms），超过 5 分钟强制重新拉取 */
+  private sessionCacheAt = 0
+  private static readonly SESSION_CACHE_TTL_MS = 5 * 60 * 1000
+
   private started = false
 
   constructor() {
@@ -230,7 +242,7 @@ class InsightService {
       this.dbDebounceTimer = null
     }
     if (this.silenceScanTimer !== null) {
-      clearInterval(this.silenceScanTimer)
+      clearTimeout(this.silenceScanTimer)
       this.silenceScanTimer = null
     }
     if (this.silenceInitialDelayTimer !== null) {
@@ -358,6 +370,29 @@ class InsightService {
     return whitelist.includes(sessionId)
   }
 
+  /**
+   * 获取会话列表，优先使用缓存（5 分钟 TTL）。
+   * 缓存命中时不访问 DB，显著减少对主线程的占用。
+   */
+  private async getSessionsCached(forceRefresh = false): Promise<ChatSession[]> {
+    const now = Date.now()
+    if (
+      !forceRefresh &&
+      this.sessionCache !== null &&
+      now - this.sessionCacheAt < InsightService.SESSION_CACHE_TTL_MS
+    ) {
+      return this.sessionCache
+    }
+    const connectResult = await chatService.connect()
+    if (!connectResult.success) return this.sessionCache ?? []
+    const result = await chatService.getSessions()
+    if (result.success && result.sessions) {
+      this.sessionCache = result.sessions as ChatSession[]
+      this.sessionCacheAt = now
+    }
+    return this.sessionCache ?? []
+  }
+
   private resetIfNewDay(): void {
     const todayStart = getStartOfDay()
     if (todayStart > this.todayDate) {
@@ -426,19 +461,13 @@ class InsightService {
 
       insightLog('INFO', `沉默阈值：${silenceDays} 天`)
 
-      const connectResult = await chatService.connect()
-      if (!connectResult.success) {
-        insightLog('WARN', '数据库连接失败，跳过沉默扫描')
+      // 沉默扫描间隔较长，强制刷新缓存以获取最新数据
+      const sessions = await this.getSessionsCached(true)
+      if (sessions.length === 0) {
+        insightLog('WARN', '获取会话列表失败，跳过沉默扫描')
         return
       }
 
-      const sessionsResult = await chatService.getSessions()
-      if (!sessionsResult.success || !sessionsResult.sessions) {
-        insightLog('WARN', '获取会话列表失败')
-        return
-      }
-
-      const sessions: ChatSession[] = sessionsResult.sessions
       insightLog('INFO', `共 ${sessions.length} 个会话，开始过滤...`)
 
       let silentCount = 0
@@ -489,19 +518,13 @@ class InsightService {
     this.processing = true
     insightLog('INFO', 'DB 变更防抖触发，开始活跃分析...')
     try {
-      const connectResult = await chatService.connect()
-      if (!connectResult.success) {
-        insightLog('WARN', '数据库连接失败，跳过活跃分析')
+      // 使用缓存版本，避免每次 DB 变更都做全量读取（5 分钟 TTL）
+      const sessions = await this.getSessionsCached()
+      if (sessions.length === 0) {
+        insightLog('WARN', '会话缓存为空，跳过活跃分析')
         return
       }
 
-      const sessionsResult = await chatService.getSessions()
-      if (!sessionsResult.success || !sessionsResult.sessions) {
-        insightLog('WARN', '获取会话列表失败')
-        return
-      }
-
-      const sessions: ChatSession[] = sessionsResult.sessions
       const now = Date.now()
 
       // 从 config 读取冷却分钟数（0 = 无冷却）
diff --git a/src/pages/SettingsPage.tsx b/src/pages/SettingsPage.tsx
index 2bacd86..2f89347 100644
--- a/src/pages/SettingsPage.tsx
+++ b/src/pages/SettingsPage.tsx
@@ -864,16 +864,19 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
   }
 
   useEffect(() => {
-    if (activeTab !== 'antiRevoke') return
+    if (activeTab !== 'antiRevoke' && activeTab !== 'insight') return
     let canceled = false
     ;(async () => {
       try {
+        // 两个 Tab 都需要会话列表；antiRevoke 还需要额外检查防撤回状态
         const sessionIds = await ensureAntiRevokeSessionsLoaded()
         if (canceled) return
-        await handleRefreshAntiRevokeStatus(sessionIds)
+        if (activeTab === 'antiRevoke') {
+          await handleRefreshAntiRevokeStatus(sessionIds)
+        }
       } catch (e: any) {
         if (!canceled) {
-          showMessage(`加载防撤回会话失败: ${e?.message || String(e)}`, false)
+          showMessage(`加载会话失败: ${e?.message || String(e)}`, false)
         }
       }
     })()
@@ -1215,7 +1218,7 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
       if (result.success && result.aesKey) {
         if (typeof result.xorKey === 'number') setImageXorKey(`0x${result.xorKey.toString(16).toUpperCase().padStart(2, '0')}`)
         setImageAesKey(result.aesKey)
-        setImageKeyStatus('已获取图片密钥')
+        setImageKeyStatus('已获取图片��钥')
         showMessage('已自动获取图片密钥', true)
         const newXorKey = typeof result.xorKey === 'number' ? result.xorKey : 0
         const newAesKey = result.aesKey
@@ -3551,7 +3554,7 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
           <div className="updates-hero-main">
             <span className="updates-chip">当前版本</span>
             <h2>{appVersion || '...'}</h2>
-            <p>{updateInfo?.hasUpdate ? `发现新版本 v${updateInfo.version}` : '当前已是最新版本，可手动检查更新'}</p>
+            <p>{updateInfo?.hasUpdate ? `发现新版本 v${updateInfo.version}` : '当前已是最新版本，可手动检查更���'}</p>
           </div>
           <div className="updates-hero-action">
             {updateInfo?.hasUpdate ? (