refactor(server): payment service (#8906)

packages/backend/server/src/plugins/payment/cron.ts

@@ -0,0 +1,54 @@
+import { Injectable } from '@nestjs/common';
+import { OnEvent } from '@nestjs/event-emitter';
+import { Cron, CronExpression } from '@nestjs/schedule';
+import { PrismaClient } from '@prisma/client';
+
+import { EventEmitter, type EventPayload } from '../../fundamentals';
+import {
+  SubscriptionPlan,
+  SubscriptionRecurring,
+  SubscriptionVariant,
+} from './types';
+
+@Injectable()
+export class SubscriptionCronJobs {
+  constructor(
+    private readonly db: PrismaClient,
+    private readonly event: EventEmitter
+  ) {}
+
+  @Cron(CronExpression.EVERY_HOUR)
+  async cleanExpiredOnetimeSubscriptions() {
+    const subscriptions = await this.db.userSubscription.findMany({
+      where: {
+        variant: SubscriptionVariant.Onetime,
+        end: {
+          lte: new Date(),
+        },
+      },
+    });
+
+    for (const subscription of subscriptions) {
+      this.event.emit('user.subscription.canceled', {
+        userId: subscription.userId,
+        plan: subscription.plan as SubscriptionPlan,
+        recurring: subscription.variant as SubscriptionRecurring,
+      });
+    }
+  }
+
+  @OnEvent('user.subscription.canceled')
+  async handleUserSubscriptionCanceled({
+    userId,
+    plan,
+  }: EventPayload<'user.subscription.canceled'>) {
+    await this.db.userSubscription.delete({
+      where: {
+        userId_plan: {
+          userId,
+          plan,
+        },
+      },
+    });
+  }
+}