refactor: subscriptions to nestjs

packages/server-nest/src/modules/Subscription/commands/MarkSubscriptionCanceled.service.ts

@@ -0,0 +1,46 @@
+import { TenancyContext } from '@/modules/Tenancy/TenancyContext.service';
+import { Inject, Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { PlanSubscription } from '../models/PlanSubscription';
+import { ServiceError } from '@/modules/Items/ServiceError';
+import { ERRORS } from '../types';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class MarkSubscriptionCanceled {
+  constructor(
+    public readonly eventEmitter: EventEmitter2,
+    public readonly tenancyContext: TenancyContext,
+
+    @Inject(PlanSubscription.name)
+    private readonly planSubscriptionModel: typeof PlanSubscription,
+  ) {}
+  /**
+   * Cancels the given tenant subscription.
+   * @param {string} subscriptionSlug - Subscription slug.
+   */
+  async execute(subscriptionSlug: string = 'main'): Promise<void> {
+    const tenant = await this.tenancyContext.getTenant();
+    const subscription = await this.planSubscriptionModel.query().findOne({
+      tenantId: tenant.id,
+      slug: subscriptionSlug,
+    });
+    // Throw error early if the subscription is not exist.
+    if (!subscription) {
+      throw new ServiceError(ERRORS.SUBSCRIPTION_NOT_EXIST);
+    }
+    // Throw error early if the subscription is already canceled.
+    if (subscription.canceled()) {
+      throw new ServiceError(ERRORS.SUBSCRIPTION_ALREADY_CANCELED);
+    }
+    await subscription.$query().patch({ canceledAt: new Date() });
+
+    // Triggers `onSubscriptionCancelled` event.
+    await this.eventEmitter.emitAsync(
+      events.subscription.onSubscriptionCancelled,
+      {
+        subscriptionSlug,
+      },
+    );
+  }
+}