init ana page with apis

app/api/analytics/trends/route.ts

@@ -0,0 +1,50 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { getVisitTrends, TimeGranularity } from '@/lib/analytics';
+
+export async function GET(request: NextRequest) {
+  try {
+    // 获取请求参数
+    const { searchParams } = new URL(request.url);
+    const linkId = searchParams.get('linkId');
+    const startDate = searchParams.get('startDate') || undefined;
+    const endDate = searchParams.get('endDate') || undefined;
+    const granularity = searchParams.get('granularity') as TimeGranularity || TimeGranularity.DAY;
+    
+    // 验证必要参数
+    if (!linkId) {
+      return NextResponse.json(
+        { error: 'Missing required parameter: linkId' },
+        { status: 400 }
+      );
+    }
+    
+    // 验证粒度参数
+    const validGranularities = Object.values(TimeGranularity);
+    if (granularity && !validGranularities.includes(granularity)) {
+      return NextResponse.json(
+        { 
+          error: 'Invalid granularity value',
+          validValues: validGranularities
+        },
+        { status: 400 }
+      );
+    }
+    
+    // 获取访问趋势数据
+    const trendsData = await getVisitTrends(
+      linkId,
+      startDate || undefined,
+      endDate || undefined,
+      granularity
+    );
+    
+    // 返回数据
+    return NextResponse.json(trendsData);
+  } catch (error) {
+    console.error('Error in trends API:', error);
+    return NextResponse.json(
+      { error: 'Failed to fetch trends data' },
+      { status: 500 }
+    );
+  }
+}