import { Injectable, Logger } from '@nestjs/common';
import { Cron, CronExpression } from '@nestjs/schedule';
import { BackupService } from './backup.service';

@Injectable()
export class BackupScheduler {
  private readonly logger = new Logger(BackupScheduler.name);

  constructor(private readonly backup: BackupService) {}

  @Cron(process.env.BACKUP_CRON || CronExpression.EVERY_DAY_AT_2AM, { name: 'backup_job' })
  async handleCron() {
    if (String(process.env.BACKUP_ENABLED || 'true').toLowerCase() === 'false') {
      return;
    }
    this.logger.log('Scheduled backup triggered');
    try {
      await this.backup.runBackup();
      this.logger.log('Backup completed');
    } catch (err: any) {
      this.logger.error('Backup failed', err?.message || err);
    }
  }
}