add crone to delete old pagers

src/modules/pager/crone/pager.crone.ts

@@ -0,0 +1,46 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Cron } from '@nestjs/schedule';
+import { EntityManager } from '@mikro-orm/postgresql';
+import { Pager } from '../entities/pager.entity';
+
+@Injectable()
+export class PagerCrone {
+  private readonly logger = new Logger(PagerCrone.name);
+
+  constructor(private readonly em: EntityManager) {}
+
+  // run every day at 03:00 (3:00 AM)
+  @Cron('0 3 * * *', {
+    name: 'deleteOldPagers',
+    timeZone: 'UTC',
+  })
+  async handleCron() {
+    try {
+      this.logger.debug('Starting daily pager cleanup (removing pagers older than 24 hours)');
+
+      // Calculate the date 24 hours ago
+      const twentyFourHoursAgo = new Date();
+      twentyFourHoursAgo.setHours(twentyFourHoursAgo.getHours() - 24);
+
+      // Find all notifications created more than 24 hours ago
+      const oldPagers = await this.em.find(Pager, {
+        createdAt: { $lt: twentyFourHoursAgo },
+      });
+
+      if (!oldPagers || oldPagers.length === 0) {
+        this.logger.debug('No old pagers found to delete');
+        return;
+      }
+
+      this.logger.log(`Found ${oldPagers.length} pagers older than 24 hours to delete`);
+
+      // Delete the old notifications
+      await this.em.removeAndFlush(oldPagers);
+
+      this.logger.log(`Successfully deleted ${oldPagers.length} old pagers`);
+    } catch (err) {
+      this.logger.error(`pagers failed: ${err?.message}`, err);
+    }
+  }
+}
+

src/modules/pager/pager.module.ts

@@ -8,10 +8,11 @@ import { RolesModule } from '../roles/roles.module';
 import { PagerListeners } from './listeners/notification.listeners';
 import { AdminModule } from '../admin/admin.module';
 import { NotificationsModule } from '../notifications/notifications.module';
+import { PagerCrone } from './crone/pager.crone';
 
 @Module({
   imports: [MikroOrmModule.forFeature([Pager]), JwtModule, RolesModule, AdminModule, NotificationsModule],
   controllers: [PagerController],
-  providers: [PagerService, PagerListeners],
+  providers: [PagerService, PagerListeners,PagerCrone],
 })
 export class PagerModule {}