view data fixes

apps/website/lib/view-models/ActivityItemViewModel.ts

@@ -9,21 +9,19 @@ import { ActivityItemViewData } from "../view-data/ActivityItemViewData";
 import { ViewModel } from "../contracts/view-models/ViewModel";
 
 export class ActivityItemViewModel extends ViewModel {
-  readonly id: string;
-  readonly type: string;
-  readonly message: string;
-  readonly time: string;
-  readonly impressions?: number;
+  private readonly data: ActivityItemViewData;
 
-  constructor(viewData: ActivityItemViewData) {
+  constructor(data: ActivityItemViewData) {
     super();
-    this.id = viewData.id;
-    this.type = viewData.type;
-    this.message = viewData.message;
-    this.time = viewData.time;
-    this.impressions = viewData.impressions;
+    this.data = data;
   }
 
+  get id(): string { return this.data.id; }
+  get type(): string { return this.data.type; }
+  get message(): string { return this.data.message; }
+  get time(): string { return this.data.time; }
+  get impressions(): number | undefined { return this.data.impressions; }
+
   get typeColor(): string {
     const colors: Record<string, string> = {
       race: 'bg-warning-amber',
@@ -36,6 +34,7 @@ export class ActivityItemViewModel extends ViewModel {
   }
 
   get formattedImpressions(): string | null {
+    // Client-only formatting
     return this.impressions ? this.impressions.toLocaleString() : null;
   }
 }