team rating

core/racing/application/use-cases/AppendTeamRatingEventsUseCase.ts

@@ -0,0 +1,49 @@
+import type { ITeamRatingEventRepository } from '@core/racing/domain/repositories/ITeamRatingEventRepository';
+import type { ITeamRatingRepository } from '@core/racing/domain/repositories/ITeamRatingRepository';
+import { TeamRatingEvent } from '@core/racing/domain/entities/TeamRatingEvent';
+import { TeamRatingSnapshotCalculator } from '@core/racing/domain/services/TeamRatingSnapshotCalculator';
+
+/**
+ * Use Case: AppendTeamRatingEventsUseCase
+ * 
+ * Appends new rating events to the ledger and updates the team rating snapshot.
+ * Mirrors the AppendRatingEventsUseCase pattern for users.
+ */
+export class AppendTeamRatingEventsUseCase {
+  constructor(
+    private readonly ratingEventRepository: ITeamRatingEventRepository,
+    private readonly ratingRepository: ITeamRatingRepository,
+  ) {}
+
+  /**
+   * Execute the use case
+   * 
+   * @param events - Array of rating events to append
+   * @returns The updated team rating snapshot
+   */
+  async execute(events: TeamRatingEvent[]): Promise<void> {
+    if (events.length === 0) {
+      return;
+    }
+
+    // Get unique team IDs from events
+    const teamIds = [...new Set(events.map(e => e.teamId))];
+
+    // Save all events
+    for (const event of events) {
+      await this.ratingEventRepository.save(event);
+    }
+
+    // Update snapshots for each affected team
+    for (const teamId of teamIds) {
+      // Get all events for this team
+      const allEvents = await this.ratingEventRepository.getAllByTeamId(teamId);
+      
+      // Calculate new snapshot
+      const snapshot = TeamRatingSnapshotCalculator.calculate(teamId, allEvents);
+      
+      // Save snapshot
+      await this.ratingRepository.save(snapshot);
+    }
+  }
+}