rename to core

core/notifications/application/use-cases/GetUnreadNotificationsUseCase.ts

@@ -0,0 +1,47 @@
+/**
+ * Application Use Case: GetUnreadNotificationsUseCase
+ * 
+ * Retrieves unread notifications for a recipient.
+ */
+
+import type { AsyncUseCase } from '@gridpilot/shared/application';
+import type { ILogger } from '../../../shared/src/logging/ILogger';
+import type { Notification } from '../../domain/entities/Notification';
+import type { INotificationRepository } from '../../domain/repositories/INotificationRepository';
+
+export interface UnreadNotificationsResult {
+  notifications: Notification[];
+  totalCount: number;
+}
+
+export class GetUnreadNotificationsUseCase implements AsyncUseCase<string, UnreadNotificationsResult> {
+  constructor(
+    private readonly notificationRepository: INotificationRepository,
+    private readonly logger: ILogger,
+  ) {}
+
+  async execute(recipientId: string): Promise<UnreadNotificationsResult> {
+    this.logger.debug(`Attempting to retrieve unread notifications for recipient ID: ${recipientId}`);
+    try {
+      const notifications = await this.notificationRepository.findUnreadByRecipientId(recipientId);
+      this.logger.info(`Successfully retrieved ${notifications.length} unread notifications for recipient ID: ${recipientId}`);
+      
+      if (notifications.length === 0) {
+        this.logger.warn(`No unread notifications found for recipient ID: ${recipientId}`);
+      }
+
+      return {
+        notifications,
+        totalCount: notifications.length,
+      };
+    } catch (error) {
+      this.logger.error(`Failed to retrieve unread notifications for recipient ID: ${recipientId}`, error);
+      throw error;
+    }
+  }
+}
+
+/**
+ * Additional notification query/use case types (e.g., listing or counting notifications)
+ * can be added here in the future as needed.
+ */