feat: 运营报告生成功能

- 后端新增 /admin/stats/report 接口，生成14天运营数据报告
- 报告内容：垃圾信息变化趋势、高频风险词Top10、误判率趋势
- 前端运营看板增加"生成报告"按钮，展示完整报告
- 支持复制报告文本到剪贴板

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/app/routes/admin_routes.py

@@ -147,6 +147,114 @@ def stats():
     )
 
 
+@admin_bp.get("/stats/report")
+@admin_required
+def generate_report():
+    """生成运营报告：垃圾信息变化、风险词排名、误判率趋势"""
+    now = datetime.utcnow()
+    week_ago = now - timedelta(days=13)  # 近14天
+
+    # 1. 垃圾信息数量变化（近14天）
+    blocked_trend_rows = (
+        db.session.query(func.date(ContentPost.created_at), func.count(ContentPost.id))
+        .filter(ContentPost.created_at >= week_ago, ContentPost.status == "blocked")
+        .group_by(func.date(ContentPost.created_at))
+        .all()
+    )
+    published_trend_rows = (
+        db.session.query(func.date(ContentPost.created_at), func.count(ContentPost.id))
+        .filter(ContentPost.created_at >= week_ago, ContentPost.status == "published")
+        .group_by(func.date(ContentPost.created_at))
+        .all()
+    )
+
+    blocked_map = {_day_key(day): int(count or 0) for day, count in blocked_trend_rows}
+    published_map = {_day_key(day): int(count or 0) for day, count in published_trend_rows}
+
+    spam_trend = []
+    today = now.date()
+    for offset in range(13, -1, -1):
+        day = today - timedelta(days=offset)
+        key = day.isoformat()
+        spam_trend.append({
+            "date": key,
+            "label": day.strftime("%m-%d"),
+            "blocked": blocked_map.get(key, 0),
+            "published": published_map.get(key, 0),
+            "total": blocked_map.get(key, 0) + published_map.get(key, 0)
+        })
+
+    # 2. 高频风险词排名（近14天）
+    blocked_logs = (
+        ContentPost.query.filter(ContentPost.created_at >= week_ago, ContentPost.status == "blocked")
+        .order_by(ContentPost.id.desc())
+        .limit(1000)
+        .all()
+    )
+    token_counter = Counter()
+    for row in blocked_logs:
+        token_counter.update(_tokenize(row.text))
+    top_keywords = [{"token": token, "count": count} for token, count in token_counter.most_common(20)]
+
+    # 3. 误判率趋势（近14天，基于人工复核）
+    review_trend_rows = (
+        db.session.query(func.date(ContentPost.manual_review_at), func.count(ContentPost.id))
+        .filter(ContentPost.manual_review_at >= week_ago, ContentPost.manual_review_status != "none")
+        .group_by(func.date(ContentPost.manual_review_at))
+        .all()
+    )
+    approved_trend_rows = (
+        db.session.query(func.date(ContentPost.manual_review_at), func.count(ContentPost.id))
+        .filter(ContentPost.manual_review_at >= week_ago, ContentPost.manual_review_status == "approved_ham")
+        .group_by(func.date(ContentPost.manual_review_at))
+        .all()
+    )
+
+    review_map = {_day_key(day): int(count or 0) for day, count in review_trend_rows}
+    approved_map = {_day_key(day): int(count or 0) for day, count in approved_trend_rows}
+
+    misjudge_trend = []
+    for offset in range(13, -1, -1):
+        day = today - timedelta(days=offset)
+        key = day.isoformat()
+        reviewed = review_map.get(key, 0)
+        approved = approved_map.get(key, 0)
+        misjudge_rate = round(approved / reviewed, 4) if reviewed > 0 else 0
+        misjudge_trend.append({
+            "date": key,
+            "label": day.strftime("%m-%d"),
+            "reviewed": reviewed,
+            "approved": approved,
+            "misjudge_rate": misjudge_rate,
+            "misjudge_rate_text": f"{misjudge_rate * 100:.1f}%"
+        })
+
+    # 4. 汇总统计
+    total_blocked_14d = sum(blocked_map.values())
+    total_published_14d = sum(published_map.values())
+    total_reviews_14d = sum(review_map.values())
+    total_approved_14d = sum(approved_map.values())
+    avg_misjudge_rate = round(total_approved_14d / total_reviews_14d, 4) if total_reviews_14d > 0 else 0
+
+    return ok({
+        "report_date": now.isoformat(),
+        "period": "近14天",
+        "spam_trend": spam_trend,
+        "top_keywords": top_keywords,
+        "misjudge_trend": misjudge_trend,
+        "summary": {
+            "total_blocked": total_blocked_14d,
+            "total_published": total_published_14d,
+            "total_posts": total_blocked_14d + total_published_14d,
+            "blocked_ratio": round(total_blocked_14d / (total_blocked_14d + total_published_14d), 4) if (total_blocked_14d + total_published_14d) > 0 else 0,
+            "total_reviews": total_reviews_14d,
+            "total_approved": total_approved_14d,
+            "avg_misjudge_rate": avg_misjudge_rate,
+            "avg_misjudge_rate_text": f"{avg_misjudge_rate * 100:.1f}%"
+        }
+    })
+
+
 @admin_bp.get("/detection/threshold")
 @admin_required
 def get_threshold():

miniprogram/app.wxss

@@ -486,6 +486,84 @@ button.btn::after {
   color: #f2f7ff;
 }
 
+/* 运营报告样式 */
+.report-modal {
+  margin-top: 20rpx;
+  padding: 24rpx;
+  border-radius: 24rpx;
+  background: linear-gradient(145deg, rgba(24, 47, 78, 0.95), rgba(16, 31, 53, 0.98));
+  border: 1rpx solid rgba(139, 177, 223, 0.35);
+  position: relative;
+}
+
+.report-header {
+  text-align: center;
+  margin-bottom: 16rpx;
+}
+
+.report-title {
+  font-size: 32rpx;
+  font-weight: 700;
+  color: #eff6ff;
+}
+
+.report-period {
+  font-size: 22rpx;
+  color: var(--sub);
+  margin-top: 6rpx;
+}
+
+.report-close {
+  position: absolute;
+  top: 16rpx;
+  right: 16rpx;
+  width: 40rpx;
+  height: 40rpx;
+  border-radius: 50%;
+  background: rgba(255, 91, 111, 0.2);
+  color: #ffdce1;
+  font-size: 28rpx;
+  text-align: center;
+  line-height: 40rpx;
+}
+
+.report-section {
+  margin-top: 16rpx;
+  padding: 16rpx;
+  border-radius: 16rpx;
+  background: rgba(17, 35, 58, 0.6);
+}
+
+.report-section-title {
+  font-size: 26rpx;
+  font-weight: 600;
+  color: #dceeff;
+  margin-bottom: 12rpx;
+}
+
+.report-kpi {
+  padding: 12rpx;
+  border-radius: 12rpx;
+  background: rgba(19, 40, 66, 0.7);
+  text-align: center;
+}
+
+.report-kpi-value {
+  font-size: 28rpx;
+  font-weight: 700;
+  color: #f2f7ff;
+}
+
+.report-kpi-label {
+  font-size: 20rpx;
+  color: var(--sub);
+  margin-top: 4rpx;
+}
+
+.report-trend-item {
+  margin-top: 8rpx;
+}
+
 .chip-group {
   display: flex;
   flex-wrap: wrap;

miniprogram/pages/admin-dashboard/index.js

@@ -7,7 +7,9 @@ Page({
     kpis: [],
     bars: [],
     sourceDist: [],
-    topKeywords: []
+    topKeywords: [],
+    report: null,
+    reportLoading: false
   },
 
   formatPercent(value, digits = 2) {
@@ -67,5 +69,74 @@ Page({
       this.setData({ loading: false })
       if (fromPullDown) wx.stopPullDownRefresh()
     }
+  },
+
+  async generateReport() {
+    this.setData({ reportLoading: true })
+    try {
+      const report = await request({ url: '/admin/stats/report' })
+
+      // 处理趋势数据，计算进度条宽度
+      const spamTrend = (report.spam_trend || []).map((item) => {
+        const maxBlocked = Math.max(...(report.spam_trend || []).map((r) => r.blocked || 0), 1)
+        return {
+          ...item,
+          blocked_percent: `${Math.max(4, Math.round((item.blocked || 0) / maxBlocked * 100))}%`
+        }
+      })
+
+      const misjudgeTrend = (report.misjudge_trend || []).map((item) => ({
+        ...item,
+        rate_percent: `${Math.round((item.misjudge_rate || 0) * 100)}%`
+      }))
+
+      this.setData({
+        report: {
+          ...report,
+          spam_trend: spamTrend,
+          misjudge_trend: misjudgeTrend
+        }
+      })
+
+      wx.showToast({ title: '报告已生成', icon: 'success' })
+    } finally {
+      this.setData({ reportLoading: false })
+    }
+  },
+
+  closeReport() {
+    this.setData({ report: null })
+  },
+
+  copyReportText() {
+    const report = this.data.report
+    if (!report) return
+
+    const summary = report.summary || {}
+    const lines = [
+      `【垃圾信息运营报告】`,
+      `报告周期：${report.period}`,
+      `生成时间：${(report.report_date || '').replace('T', ' ').slice(0, 19)}`,
+      '',
+      `【汇总统计】`,
+      `总发布量：${summary.total_posts || 0} 条`,
+      `拦截量：${summary.total_blocked || 0} 条`,
+      `正常发布：${summary.total_published || 0} 条`,
+      `拦截率：${this.formatPercent(summary.blocked_ratio, 2)}`,
+      `复核总数：${summary.total_reviews || 0} 次`,
+      `误判放行：${summary.total_approved || 0} 次`,
+      `平均误判率：${summary.avg_misjudge_rate_text || '0%'}`,
+      '',
+      `【高频风险词 Top10】`,
+      (report.top_keywords || []).slice(0, 10).map((k) => `${k.token}(${k.count}次)`).join('、'),
+      '',
+      `【近7日趋势】`,
+      (report.spam_trend || []).slice(-7).map((t) => `${t.label}: 拦截${t.blocked}条，发布${t.published}条`).join('\n')
+    ]
+
+    wx.setClipboardData({
+      data: lines.join('\n'),
+      success: () => wx.showToast({ title: '报告已复制', icon: 'success' })
+    })
   }
 })

miniprogram/pages/admin-dashboard/index.wxml

@@ -54,4 +54,83 @@
       <text class="tag" wx:for="{{topKeywords}}" wx:key="token">{{item.token}} × {{item.count}}</text>
     </view>
   </view>
+
+  <!-- 生成报告按钮 -->
+  <view class="card fade-up fade-up-delay-3">
+    <button class="btn btn-accent" loading="{{reportLoading}}" bindtap="generateReport">生成运营报告</button>
+  </view>
+
+  <!-- 报告展示区域 -->
+  <view class="report-modal" wx:if="{{report}}">
+    <view class="report-header">
+      <view class="report-title">垃圾信息运营报告</view>
+      <view class="report-period">{{report.period}}</view>
+    </view>
+
+    <view class="report-close" bindtap="closeReport">×</view>
+
+    <view class="report-section">
+      <view class="report-section-title">汇总统计</view>
+      <view class="grid-3">
+        <view class="report-kpi">
+          <view class="report-kpi-value">{{report.summary.total_posts}}</view>
+          <view class="report-kpi-label">总发布量</view>
+        </view>
+        <view class="report-kpi">
+          <view class="report-kpi-value">{{report.summary.total_blocked}}</view>
+          <view class="report-kpi-label">拦截量</view>
+        </view>
+        <view class="report-kpi">
+          <view class="report-kpi-value">{{report.summary.total_published}}</view>
+          <view class="report-kpi-label">正常发布</view>
+        </view>
+      </view>
+      <view class="row">
+        <text class="label">拦截率</text>
+        <text class="value">{{report.summary.blocked_ratio * 100}}%</text>
+      </view>
+      <view class="row">
+        <text class="label">平均误判率</text>
+        <text class="value">{{report.summary.avg_misjudge_rate_text}}</text>
+      </view>
+    </view>
+
+    <view class="report-section">
+      <view class="report-section-title">垃圾信息数量变化（近14天）</view>
+      <view class="report-trend-item" wx:for="{{report.spam_trend}}" wx:key="date">
+        <view class="row">
+          <text class="label">{{item.label}}</text>
+          <text class="value">拦截 {{item.blocked}} / 发布 {{item.published}}</text>
+        </view>
+        <view class="progress-track">
+          <view class="progress-fill" style="width: {{item.blocked_percent}};"></view>
+        </view>
+      </view>
+    </view>
+
+    <view class="report-section">
+      <view class="report-section-title">高频风险词 Top10</view>
+      <view class="chip-group">
+        <text class="tag tag-danger" wx:for="{{report.topKeywords}}" wx:for-item="kw" wx:if="{{index < 10}}" wx:key="token">{{kw.token}} × {{kw.count}}</text>
+      </view>
+    </view>
+
+    <view class="report-section">
+      <view class="report-section-title">误判率趋势（近14天）</view>
+      <view class="report-trend-item" wx:for="{{report.misjudge_trend}}" wx:key="date">
+        <view class="row">
+          <text class="label">{{item.label}}</text>
+          <text class="value">{{item.misjudge_rate_text}}</text>
+        </view>
+        <view class="progress-track">
+          <view class="progress-fill-safe" style="width: {{item.rate_percent}};"></view>
+        </view>
+      </view>
+    </view>
+
+    <view class="btn-row">
+      <button class="btn btn-primary" bindtap="copyReportText">复制报告文本</button>
+      <button class="btn btn-ghost" bindtap="closeReport">关闭</button>
+    </view>
+  </view>
 </view>