website refactor

apps/website/lib/page-queries/LeaderboardsPageQuery.ts

@@ -0,0 +1,37 @@
+import { PageQuery } from '@/lib/contracts/page-queries/PageQuery';
+import { Result } from '@/lib/contracts/Result';
+import { LeaderboardsViewDataBuilder } from '@/lib/builders/view-data/LeaderboardsViewDataBuilder';
+import type { LeaderboardsViewData } from '@/lib/view-data/LeaderboardsViewData';
+import { LeaderboardsService } from '@/lib/services/leaderboards/LeaderboardsService';
+import { mapToPresentationError, type PresentationError } from '@/lib/contracts/page-queries/PresentationError';
+
+/**
+ * Leaderboards page query
+ * Returns Result<LeaderboardsViewData, PresentationError>
+ * No DI container usage - constructs dependencies explicitly
+ */
+export class LeaderboardsPageQuery implements PageQuery<LeaderboardsViewData, void, PresentationError> {
+  async execute(): Promise<Result<LeaderboardsViewData, PresentationError>> {
+    // Manual wiring: Service creates its own dependencies
+    const service = new LeaderboardsService();
+    
+    // Fetch data using service
+    const serviceResult = await service.getLeaderboards();
+    
+    if (serviceResult.isErr()) {
+      // Map domain errors to presentation errors
+      return Result.err(mapToPresentationError(serviceResult.getError()));
+    }
+
+    // Transform to ViewData using builder
+    const apiDto = serviceResult.unwrap();
+    const viewData = LeaderboardsViewDataBuilder.build(apiDto);
+    return Result.ok(viewData);
+  }
+
+  // Static method to avoid object construction in server code
+  static async execute(): Promise<Result<LeaderboardsViewData, PresentationError>> {
+    const query = new LeaderboardsPageQuery();
+    return query.execute();
+  }
+}