feat(group-analytics): 新增并极致优化群成员详细分析与图表呈现功能

electron/main.ts

@@ -2139,6 +2139,13 @@ function registerIpcHandlers() {
     return groupAnalyticsService.getGroupMediaStats(chatroomId, startTime, endTime)
   })
 
+  ipcMain.handle(
+    'groupAnalytics:getGroupMemberAnalytics',
+    async (_, chatroomId: string, memberUsername: string, startTime?: number, endTime?: number) => {
+      return groupAnalyticsService.getGroupMemberAnalytics(chatroomId, memberUsername, startTime, endTime)
+    }
+  )
+
   ipcMain.handle(
     'groupAnalytics:getGroupMemberMessages',
     async (

electron/preload.ts

@@ -297,6 +297,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
     getGroupMessageRanking: (chatroomId: string, limit?: number, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupMessageRanking', chatroomId, limit, startTime, endTime),
     getGroupActiveHours: (chatroomId: string, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupActiveHours', chatroomId, startTime, endTime),
     getGroupMediaStats: (chatroomId: string, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupMediaStats', chatroomId, startTime, endTime),
+    getGroupMemberAnalytics: (chatroomId: string, memberUsername: string, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupMemberAnalytics', chatroomId, memberUsername, startTime, endTime),
     getGroupMemberMessages: (
       chatroomId: string,
       memberUsername: string,

electron/services/groupAnalyticsService.ts

@@ -5,6 +5,7 @@ import { ConfigService } from './config'
 import { wcdbService } from './wcdbService'
 import { chatService } from './chatService'
 import type { Message } from './chatService'
+import type { ChatStatistics } from './analyticsService'
 
 export interface GroupChatInfo {
   username: string
@@ -49,6 +50,13 @@ export interface GroupMediaStats {
   total: number
 }
 
+export interface GroupMemberAnalytics {
+  statistics: ChatStatistics
+  timeDistribution: Record<number, number>
+  commonPhrases?: Array<{ phrase: string; count: number }>
+  commonEmojis?: Array<{ emoji: string; count: number }>
+}
+
 export interface GroupMemberMessagesPage {
   messages: Message[]
   hasMore: boolean
@@ -791,13 +799,33 @@ class GroupAnalyticsService {
         if (normalizedValue) return normalizedValue
       }
     }
+    
+    // Fallback: fast extract from raw content to avoid full parse
+    const rawContent = String(row.StrContent || row.message_content || row.content || row.msg_content || '').trim()
+    if (rawContent) {
+      const match = /^\s*([a-zA-Z0-9_@-]{4,}):(?!\/\/)\s*(?:\r?\n|<br\s*\/?>)/i.exec(rawContent)
+      if (match && match[1]) {
+        return match[1].trim()
+      }
+    }
+    
     return ''
   }
 
   private parseSingleMessageRow(row: Record<string, any>): Message | null {
     try {
       const mapped = chatService.mapRowsToMessagesForApi([row])
-      return Array.isArray(mapped) && mapped.length > 0 ? mapped[0] : null
+      if (Array.isArray(mapped) && mapped.length > 0) {
+        const msg = mapped[0]
+        if (!msg.localType) {
+          msg.localType = parseInt(row.Type || row.type || row.local_type || row.msg_type || '0', 10)
+        }
+        if (!msg.createTime) {
+          msg.createTime = parseInt(row.CreateTime || row.create_time || row.createTime || row.msg_time || '0', 10)
+        }
+        return msg
+      }
+      return null
     } catch {
       return null
     }
@@ -1438,6 +1466,152 @@ class GroupAnalyticsService {
     }
   }
 
+  async getGroupMemberAnalytics(
+    chatroomId: string,
+    memberUsername: string,
+    startTime?: number,
+    endTime?: number
+  ): Promise<{ success: boolean; data?: GroupMemberAnalytics; error?: string }> {
+    try {
+      const conn = await this.ensureConnected()
+      if (!conn.success) return { success: false, error: conn.error }
+
+      const normalizedChatroomId = String(chatroomId || '').trim()
+      const normalizedMemberUsername = String(memberUsername || '').trim()
+
+      const batchSize = 10000
+      const senderMatchCache = new Map<string, boolean>()
+      const matchesTargetSender = (sender: string | null | undefined): boolean => {
+        const key = String(sender || '').trim().toLowerCase()
+        if (!key) return false
+        const cached = senderMatchCache.get(key)
+        if (typeof cached === 'boolean') return cached
+        const matched = this.isSameAccountIdentity(normalizedMemberUsername, sender)
+        senderMatchCache.set(key, matched)
+        return matched
+      }
+
+      const cursorResult = await this.openMemberMessageCursor(normalizedChatroomId, batchSize, true, startTime || 0, endTime || 0)
+      if (!cursorResult.success || !cursorResult.cursor) {
+        return { success: false, error: cursorResult.error || '创建游标失败' }
+      }
+
+      const cursor = cursorResult.cursor
+      const stats: ChatStatistics = {
+        totalMessages: 0,
+        textMessages: 0,
+        imageMessages: 0,
+        voiceMessages: 0,
+        videoMessages: 0,
+        emojiMessages: 0,
+        otherMessages: 0,
+        sentMessages: 0, // In group, we only fetch messages of this member, so sentMessages = totalMessages
+        receivedMessages: 0, // No meaning here
+        firstMessageTime: null,
+        lastMessageTime: null,
+        activeDays: 0,
+        messageTypeCounts: {}
+      }
+      
+      const hourlyDistribution: Record<number, number> = {}
+      for (let i = 0; i < 24; i++) hourlyDistribution[i] = 0
+      const dailySet = new Set<string>()
+      const textTypes = [1, 244813135921]
+
+      const phraseCounts = new Map<string, number>()
+      const emojiCounts = new Map<string, number>()
+
+      const myWxid = String(this.configService.get('myWxid') || '').trim()
+
+      try {
+        while (true) {
+          const batch = await wcdbService.fetchMessageBatch(cursor)
+          if (!batch.success) break
+          const rows = Array.isArray(batch.rows) ? batch.rows as Record<string, any>[] : []
+          if (rows.length === 0) break
+
+          for (const row of rows) {
+            let senderFromRow = this.extractRowSenderUsername(row)
+            
+            const isSendRaw = row.computed_is_send ?? row.is_send ?? row.isSend ?? row.WCDB_CT_is_send
+            const isSend = isSendRaw != null ? parseInt(isSendRaw, 10) === 1 : false
+            
+            if (isSend) {
+              senderFromRow = myWxid
+            }
+
+            if (!senderFromRow || !matchesTargetSender(senderFromRow)) {
+              continue
+            }
+            
+            const msgType = parseInt(row.Type || row.type || row.local_type || row.msg_type || '0', 10)
+            const createTime = parseInt(row.CreateTime || row.create_time || row.createTime || row.msg_time || '0', 10)
+            
+            let content = String(row.StrContent || row.message_content || row.content || row.msg_content || '')
+            if (content) {
+              content = content.replace(/^\s*([a-zA-Z0-9_@-]{4,}):(?!\/\/)\s*(?:\r?\n|<br\s*\/?>)/i, '')
+            }
+
+            stats.totalMessages++
+            if (textTypes.includes(msgType)) {
+              stats.textMessages++
+              if (content) {
+                const text = content.trim()
+                if (text && text.length <= 20) {
+                  phraseCounts.set(text, (phraseCounts.get(text) || 0) + 1)
+                }
+                const emojiMatches = text.match(/\[.*?\]/g)
+                if (emojiMatches) {
+                  for (const em of emojiMatches) {
+                    emojiCounts.set(em, (emojiCounts.get(em) || 0) + 1)
+                  }
+                }
+              }
+            }
+            else if (msgType === 3) stats.imageMessages++
+            else if (msgType === 34) stats.voiceMessages++
+            else if (msgType === 43) stats.videoMessages++
+            else if (msgType === 47) stats.emojiMessages++
+            else stats.otherMessages++
+
+            stats.sentMessages++
+            
+            stats.messageTypeCounts[msgType] = (stats.messageTypeCounts[msgType] || 0) + 1
+            
+            if (createTime > 0) {
+              if (stats.firstMessageTime === null || createTime < stats.firstMessageTime) stats.firstMessageTime = createTime
+              if (stats.lastMessageTime === null || createTime > stats.lastMessageTime) stats.lastMessageTime = createTime
+              
+              const d = new Date(createTime * 1000)
+              const hour = d.getHours()
+              hourlyDistribution[hour]++
+              dailySet.add(`${d.getFullYear()}-${d.getMonth()}-${d.getDate()}`)
+            }
+          }
+          if (!batch.hasMore) break
+        }
+      } finally {
+        await wcdbService.closeMessageCursor(cursor)
+      }
+      
+      stats.activeDays = dailySet.size
+
+      const commonPhrases = Array.from(phraseCounts.entries())
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, 10)
+        .map(([phrase, count]) => ({ phrase, count }))
+        
+      const commonEmojis = Array.from(emojiCounts.entries())
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, 10)
+        .map(([emoji, count]) => ({ emoji, count }))
+
+      return { success: true, data: { statistics: stats, timeDistribution: hourlyDistribution, commonPhrases, commonEmojis } }
+    } catch (e) {
+      return { success: false, error: String(e) }
+    }
+  }
+
   async exportGroupMemberMessages(
     chatroomId: string,
     memberUsername: string,