backend/libs/common/src/helper/services/onesignal.service.ts

import { Injectable } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import * as OneSignal from 'onesignal-node';

@Injectable()
export class OneSignalService {
  private client: any;

  constructor(private readonly configService: ConfigService) {
    // Initialize OneSignal client here
    this.client = new OneSignal.Client(
      this.configService.get<string>('onesignal-config.ONESIGNAL_APP_ID'),
      this.configService.get<string>('onesignal-config.ONESIGNAL_API_KEY'),
    );
  }

  async sendNotification(
    content: string,
    title: string,
    subscriptionIds: string[],
  ): Promise<any> {
    const notification = {
      contents: {
        en: content,
      },
      headings: {
        en: title,
      },
      include_subscription_ids: subscriptionIds,
    };

    try {
      const response = await this.client.createNotification(notification);

      return response;
    } catch (err) {
      console.error('Error:', err);
      throw new Error('Error sending notification');
    }
  }
}