wip

packages/analytics/infrastructure/repositories/InMemoryAnalyticsSnapshotRepository.ts

@@ -0,0 +1,76 @@
+/**
+ * Infrastructure: InMemoryAnalyticsSnapshotRepository
+ * 
+ * In-memory implementation of IAnalyticsSnapshotRepository for development/testing.
+ */
+
+import type { IAnalyticsSnapshotRepository } from '../../domain/repositories/IAnalyticsSnapshotRepository';
+import { AnalyticsSnapshot, type SnapshotPeriod, type SnapshotEntityType } from '../../domain/entities/AnalyticsSnapshot';
+
+export class InMemoryAnalyticsSnapshotRepository implements IAnalyticsSnapshotRepository {
+  private snapshots: Map<string, AnalyticsSnapshot> = new Map();
+
+  async save(snapshot: AnalyticsSnapshot): Promise<void> {
+    this.snapshots.set(snapshot.id, snapshot);
+  }
+
+  async findById(id: string): Promise<AnalyticsSnapshot | null> {
+    return this.snapshots.get(id) ?? null;
+  }
+
+  async findByEntity(entityType: SnapshotEntityType, entityId: string): Promise<AnalyticsSnapshot[]> {
+    return Array.from(this.snapshots.values()).filter(
+      s => s.entityType === entityType && s.entityId === entityId
+    );
+  }
+
+  async findByPeriod(
+    entityType: SnapshotEntityType,
+    entityId: string,
+    period: SnapshotPeriod,
+    startDate: Date,
+    endDate: Date
+  ): Promise<AnalyticsSnapshot | null> {
+    return Array.from(this.snapshots.values()).find(
+      s => s.entityType === entityType &&
+           s.entityId === entityId &&
+           s.period === period &&
+           s.startDate >= startDate &&
+           s.endDate <= endDate
+    ) ?? null;
+  }
+
+  async findLatest(
+    entityType: SnapshotEntityType,
+    entityId: string,
+    period: SnapshotPeriod
+  ): Promise<AnalyticsSnapshot | null> {
+    const matching = Array.from(this.snapshots.values())
+      .filter(s => s.entityType === entityType && s.entityId === entityId && s.period === period)
+      .sort((a, b) => b.endDate.getTime() - a.endDate.getTime());
+    
+    return matching[0] ?? null;
+  }
+
+  async getHistoricalSnapshots(
+    entityType: SnapshotEntityType,
+    entityId: string,
+    period: SnapshotPeriod,
+    limit: number
+  ): Promise<AnalyticsSnapshot[]> {
+    return Array.from(this.snapshots.values())
+      .filter(s => s.entityType === entityType && s.entityId === entityId && s.period === period)
+      .sort((a, b) => b.endDate.getTime() - a.endDate.getTime())
+      .slice(0, limit);
+  }
+
+  // Helper for testing
+  clear(): void {
+    this.snapshots.clear();
+  }
+
+  // Helper for seeding demo data
+  seed(snapshots: AnalyticsSnapshot[]): void {
+    snapshots.forEach(s => this.snapshots.set(s.id, s));
+  }
+}