新的提交

src/types/analytics.ts

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+// 分析数据类型定义
+
+// 聊天统计数据
+export interface ChatStatistics {
+  totalMessages: number
+  textMessages: number
+  imageMessages: number
+  voiceMessages: number
+  videoMessages: number
+  emojiMessages: number
+  otherMessages: number
+  sentMessages: number
+  receivedMessages: number
+  firstMessageTime: number | null  // Unix timestamp
+  lastMessageTime: number | null
+  activeDays: number
+  messageTypeCounts: Record<number, number>
+}
+
+// 时间分布统计
+export interface TimeDistribution {
+  hourlyDistribution: Record<number, number>  // 0-23
+  weekdayDistribution: Record<number, number> // 1-7
+  monthlyDistribution: Record<string, number> // YYYY-MM
+}
+
+// 联系人排名
+export interface ContactRanking {
+  username: string
+  displayName: string
+  avatarUrl?: string
+  messageCount: number
+  sentCount: number
+  receivedCount: number
+  lastMessageTime: number | null
+}
+
+// 消息类型标签映射
+export const MESSAGE_TYPE_LABELS: Record<number, string> = {
+  1: '文本',
+  244813135921: '文本',
+  3: '图片',
+  34: '语音',
+  43: '视频',
+  47: '表情',
+  48: '位置',
+  49: '链接/文件',
+  42: '名片',
+  10000: '系统消息',
+}
+
+// 星期几名称
+export const WEEKDAY_NAMES = ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
+
+// 获取消息类型分布（用于图表）
+export function getMessageTypeDistribution(stats: ChatStatistics): Record<string, number> {
+  if (Object.keys(stats.messageTypeCounts).length > 0) {
+    const distribution: Record<string, number> = {}
+    
+    for (const [type, count] of Object.entries(stats.messageTypeCounts)) {
+      const typeNum = parseInt(type)
+      const label = MESSAGE_TYPE_LABELS[typeNum] || '其他'
+      distribution[label] = (distribution[label] || 0) + count
+    }
+    
+    return distribution
+  }
+  
+  return {
+    '文本': stats.textMessages,
+    '图片': stats.imageMessages,
+    '语音': stats.voiceMessages,
+    '视频': stats.videoMessages,
+    '表情': stats.emojiMessages,
+    '其他': stats.otherMessages,
+  }
+}
+
+// 计算聊天时长（天数）
+export function getChatDurationDays(stats: ChatStatistics): number {
+  if (!stats.firstMessageTime || !stats.lastMessageTime) return 0
+  const diffMs = (stats.lastMessageTime - stats.firstMessageTime) * 1000
+  return Math.floor(diffMs / (1000 * 60 * 60 * 24)) + 1
+}
+
+// 平均每天消息数
+export function getAverageMessagesPerDay(stats: ChatStatistics): number {
+  const days = getChatDurationDays(stats)
+  if (days === 0) return 0
+  return stats.totalMessages / days
+}