first commit

src/app/api/analytics/seasonality/route.ts

@@ -0,0 +1,40 @@
+import { NextRequest, NextResponse } from 'next/server';
+import {
+  getDayOfWeekAnalytics,
+  getMonthOfYearAnalytics,
+  getSeasonalityByAttribute,
+} from '@/lib/analytics/seasonality.service';
+import { parseAnalyticsParams } from '../_utils';
+
+export async function GET(request: NextRequest) {
+  try {
+    const filters = parseAnalyticsParams(request);
+    const { searchParams } = new URL(request.url);
+    const view = searchParams.get('view') || 'day-of-week';
+    const attribute = searchParams.get('attribute') as 'size' | 'color' | null;
+
+    let result;
+    switch (view) {
+      case 'month-of-year':
+        result = await getMonthOfYearAnalytics(filters);
+        break;
+      case 'by-attribute':
+        if (attribute && ['size', 'color'].includes(attribute)) {
+          result = await getSeasonalityByAttribute(filters, attribute);
+        } else {
+          return NextResponse.json(
+            { error: 'attribute parameter required (size or color)' },
+            { status: 422 },
+          );
+        }
+        break;
+      default:
+        result = await getDayOfWeekAnalytics(filters);
+    }
+
+    return NextResponse.json(result);
+  } catch (error) {
+    console.error('GET /api/analytics/seasonality error:', error);
+    return NextResponse.json({ error: 'Failed to fetch seasonality analytics' }, { status: 500 });
+  }
+}