なんかもうめっちゃ変えた

packages/backend/src/core/NotificationService.ts

@@ -0,0 +1,67 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import { NotificationsRepository } from '@/models/index.js';
+import type { UsersRepository } from '@/models/index.js';
+import type { User } from '@/models/entities/User.js';
+import type { Notification } from '@/models/entities/Notification.js';
+import { UserEntityService } from './entities/UserEntityService.js';
+import { GlobalEventService } from './GlobalEventService.js';
+import { PushNotificationService } from './PushNotificationService.js';
+
+@Injectable()
+export class NotificationService {
+	constructor(
+		@Inject(DI.notificationsRepository)
+		private notificationsRepository: NotificationsRepository,
+
+		private userEntityService: UserEntityService,
+		private globalEventService: GlobalEventService,
+		private pushNotificationService: PushNotificationService,
+	) {
+	}
+
+	public async readNotification(
+		userId: User['id'],
+		notificationIds: Notification['id'][],
+	) {
+		if (notificationIds.length === 0) return;
+
+		// Update documents
+		const result = await this.notificationsRepository.update({
+			notifieeId: userId,
+			id: In(notificationIds),
+			isRead: false,
+		}, {
+			isRead: true,
+		});
+
+		if (result.affected === 0) return;
+
+		if (!await this.userEntityService.getHasUnreadNotification(userId)) return this.#postReadAllNotifications(userId);
+		else return this.#postReadNotifications(userId, notificationIds);
+	}
+
+	public async readNotificationByQuery(
+		userId: User['id'],
+		query: Record<string, any>,
+	) {
+		const notificationIds = await this.notificationsRepository.findBy({
+			...query,
+			notifieeId: userId,
+			isRead: false,
+		}).then(notifications => notifications.map(notification => notification.id));
+
+		return this.readNotification(userId, notificationIds);
+	}
+
+	#postReadAllNotifications(userId: User['id']) {
+		this.globalEventService.publishMainStream(userId, 'readAllNotifications');
+		return this.pushNotificationService.pushNotification(userId, 'readAllNotifications', undefined);
+	}
+
+	#postReadNotifications(userId: User['id'], notificationIds: Notification['id'][]) {
+		this.globalEventService.publishMainStream(userId, 'readNotifications', notificationIds);
+		return this.pushNotificationService.pushNotification(userId, 'readNotifications', { notificationIds });
+	}
+}