fix(sns): derive per-user totals from timeline counts map

electron/main.ts

@@ -1509,6 +1509,10 @@ function registerIpcHandlers() {
     return snsService.getSnsUsernames()
   })
 
+  ipcMain.handle('sns:getUserPostCounts', async () => {
+    return snsService.getUserPostCounts()
+  })
+
   ipcMain.handle('sns:getExportStats', async () => {
     return snsService.getExportStats()
   })

electron/preload.ts

@@ -353,6 +353,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
     getTimeline: (limit: number, offset: number, usernames?: string[], keyword?: string, startTime?: number, endTime?: number) =>
       ipcRenderer.invoke('sns:getTimeline', limit, offset, usernames, keyword, startTime, endTime),
     getSnsUsernames: () => ipcRenderer.invoke('sns:getSnsUsernames'),
+    getUserPostCounts: () => ipcRenderer.invoke('sns:getUserPostCounts'),
     getExportStatsFast: () => ipcRenderer.invoke('sns:getExportStatsFast'),
     getExportStats: () => ipcRenderer.invoke('sns:getExportStats'),
     getUserPostStats: (username: string) => ipcRenderer.invoke('sns:getUserPostStats', username),

electron/services/snsService.ts

@@ -292,7 +292,9 @@ class SnsService {
     private contactCache: ContactCacheService
     private imageCache = new Map<string, string>()
     private exportStatsCache: { totalPosts: number; totalFriends: number; myPosts: number | null; updatedAt: number } | null = null
+    private userPostCountsCache: { counts: Record<string, number>; updatedAt: number } | null = null
     private readonly exportStatsCacheTtlMs = 5 * 60 * 1000
+    private readonly userPostCountsCacheTtlMs = 5 * 60 * 1000
     private lastTimelineFallbackAt = 0
     private readonly timelineFallbackCooldownMs = 3 * 60 * 1000
 
@@ -506,10 +508,6 @@ class SnsService {
         return Number.isFinite(num) && num > 0 ? Math.floor(num) : 0
     }
 
-    private escapeSqlString(value: string): string {
-        return value.replace(/'/g, "''")
-    }
-
     private pickTimelineUsername(post: any): string {
         const raw = post?.username ?? post?.user_name ?? post?.userName ?? ''
         if (typeof raw !== 'string') return ''
@@ -868,62 +866,82 @@ class SnsService {
         })
     }
 
+    private async getUserPostCountsFromTimeline(): Promise<Record<string, number>> {
+        const pageSize = 500
+        const counts: Record<string, number> = {}
+        let offset = 0
+
+        for (let round = 0; round < 2000; round++) {
+            const result = await wcdbService.getSnsTimeline(pageSize, offset, undefined, undefined, 0, 0)
+            if (!result.success || !Array.isArray(result.timeline)) {
+                throw new Error(result.error || '获取朋友圈用户总条数失败')
+            }
+
+            const rows = result.timeline
+            if (rows.length === 0) break
+
+            for (const row of rows) {
+                const username = this.pickTimelineUsername(row)
+                if (!username) continue
+                counts[username] = (counts[username] || 0) + 1
+            }
+
+            if (rows.length < pageSize) break
+            offset += rows.length
+        }
+
+        return counts
+    }
+
+    async getUserPostCounts(options?: {
+        preferCache?: boolean
+    }): Promise<{ success: boolean; counts?: Record<string, number>; error?: string }> {
+        const preferCache = options?.preferCache ?? true
+        const now = Date.now()
+
+        try {
+            if (
+                preferCache &&
+                this.userPostCountsCache &&
+                now - this.userPostCountsCache.updatedAt <= this.userPostCountsCacheTtlMs
+            ) {
+                return { success: true, counts: this.userPostCountsCache.counts }
+            }
+
+            const counts = await this.getUserPostCountsFromTimeline()
+            this.userPostCountsCache = {
+                counts,
+                updatedAt: Date.now()
+            }
+            return { success: true, counts }
+        } catch (error) {
+            console.error('[SnsService] getUserPostCounts failed:', error)
+            if (this.userPostCountsCache) {
+                return { success: true, counts: this.userPostCountsCache.counts }
+            }
+            return { success: false, error: String(error) }
+        }
+    }
+
     async getUserPostStats(username: string): Promise<{ success: boolean; data?: { username: string; totalPosts: number }; error?: string }> {
         const normalizedUsername = this.toOptionalString(username)
         if (!normalizedUsername) {
             return { success: false, error: '用户名不能为空' }
         }
 
-        const escapedUsername = this.escapeSqlString(normalizedUsername)
+        const countsResult = await this.getUserPostCounts({ preferCache: true })
-        const primaryResult = await wcdbService.execQuery(
+        if (countsResult.success) {
-            'sns',
+            const totalPosts = countsResult.counts?.[normalizedUsername] ?? 0
-            null,
-            `SELECT COUNT(1) AS total FROM SnsTimeLine WHERE user_name = '${escapedUsername}'`
-        )
-
-        const primaryTotal = (primaryResult.success && primaryResult.rows && primaryResult.rows.length > 0)
-            ? this.parseCountValue(primaryResult.rows[0])
-            : 0
-        if (primaryResult.success && primaryTotal > 0) {
             return {
                 success: true,
                 data: {
                     username: normalizedUsername,
-                    totalPosts: primaryTotal
+                    totalPosts: Math.max(0, Number(totalPosts || 0))
                 }
             }
         }
 
-        const fallbackResult = await wcdbService.execQuery(
+        return { success: false, error: countsResult.error || '统计单个好友朋友圈失败' }
-            'sns',
-            null,
-            `SELECT COUNT(1) AS total FROM SnsTimeLine WHERE userName = '${escapedUsername}'`
-        )
-
-        if (fallbackResult.success) {
-            const fallbackTotal = fallbackResult.rows && fallbackResult.rows.length > 0
-                ? this.parseCountValue(fallbackResult.rows[0])
-                : 0
-            return {
-                success: true,
-                data: {
-                    username: normalizedUsername,
-                    totalPosts: Math.max(primaryTotal, fallbackTotal)
-                }
-            }
-        }
-
-        if (primaryResult.success) {
-            return {
-                success: true,
-                data: {
-                    username: normalizedUsername,
-                    totalPosts: primaryTotal
-                }
-            }
-        }
-
-        return { success: false, error: primaryResult.error || fallbackResult.error || '统计单个好友朋友圈失败' }
     }
 
     // 安装朋友圈删除拦截
@@ -943,7 +961,12 @@ class SnsService {
 
     // 从数据库直接删除朋友圈记录
     async deleteSnsPost(postId: string): Promise<{ success: boolean; error?: string }> {
-        return wcdbService.deleteSnsPost(postId)
+        const result = await wcdbService.deleteSnsPost(postId)
+        if (result.success) {
+            this.userPostCountsCache = null
+            this.exportStatsCache = null
+        }
+        return result
     }
 
     /**

src/pages/SnsPage.tsx

@@ -497,11 +497,12 @@ export default function SnsPage() {
         setAuthorTimelineTotalPosts(null)
 
         try {
-            const result = await window.electronAPI.sns.getUserPostStats(target.username)
+            const result = await window.electronAPI.sns.getUserPostCounts()
             if (requestToken !== authorTimelineStatsTokenRef.current) return
 
-            if (result.success && result.data) {
+            if (result.success && result.counts) {
-                setAuthorTimelineTotalPosts(Math.max(0, Number(result.data.totalPosts || 0)))
+                const totalPosts = result.counts[target.username] ?? 0
+                setAuthorTimelineTotalPosts(Math.max(0, Number(totalPosts || 0)))
             } else {
                 setAuthorTimelineTotalPosts(null)
             }

src/types/electron.d.ts

@@ -789,6 +789,7 @@ export interface ElectronAPI {
     onExportProgress: (callback: (payload: { current: number; total: number; status: string }) => void) => () => void
     selectExportDir: () => Promise<{ canceled: boolean; filePath?: string }>
     getSnsUsernames: () => Promise<{ success: boolean; usernames?: string[]; error?: string }>
+    getUserPostCounts: () => Promise<{ success: boolean; counts?: Record<string, number>; error?: string }>
     getExportStatsFast: () => Promise<{ success: boolean; data?: { totalPosts: number; totalFriends: number; myPosts: number | null }; error?: string }>
     getExportStats: () => Promise<{ success: boolean; data?: { totalPosts: number; totalFriends: number; myPosts: number | null }; error?: string }>
     getUserPostStats: (username: string) => Promise<{ success: boolean; data?: { username: string; totalPosts: number }; error?: string }>