view data fixes

apps/website/lib/builders/view-data/AnalyticsDashboardViewDataBuilder.ts

@@ -0,0 +1,34 @@
+import { AnalyticsDashboardInputViewData } from '@/lib/view-data/AnalyticsDashboardInputViewData';
+import { AnalyticsDashboardViewData } from '@/lib/view-data/AnalyticsDashboardViewData';
+
+/**
+ * AnalyticsDashboardViewDataBuilder
+ *
+ * Transforms AnalyticsDashboardInputViewData into AnalyticsDashboardViewData for server-side rendering.
+ * Deterministic; side-effect free; no HTTP calls.
+ */
+import { ViewDataBuilder } from "../../contracts/builders/ViewDataBuilder";
+
+export class AnalyticsDashboardViewDataBuilder implements ViewDataBuilder<any, any> {
+  build(input: any): any {
+    return AnalyticsDashboardViewDataBuilder.build(input);
+  }
+
+  static build(viewData: AnalyticsDashboardInputViewData): AnalyticsDashboardViewData {
+    const userEngagementRate = viewData.totalUsers > 0 ? (viewData.activeUsers / viewData.totalUsers) * 100 : 0;
+    const formattedEngagementRate = `${userEngagementRate.toFixed(1)}%`;
+    const activityLevel = userEngagementRate > 70 ? 'High' : userEngagementRate > 40 ? 'Medium' : 'Low';
+
+    return {
+      metrics: {
+        totalUsers: viewData.totalUsers,
+        activeUsers: viewData.activeUsers,
+        totalRaces: viewData.totalRaces,
+        totalLeagues: viewData.totalLeagues,
+        userEngagementRate,
+        formattedEngagementRate,
+        activityLevel,
+      },
+    };
+  }
+}