feat: pause, resume main subscription

packages/server/src/services/Subscription/LemonChangeSubscriptionPlan.ts

@@ -0,0 +1,47 @@
+import { Inject, Service } from 'typedi';
+import { updateSubscription } from '@lemonsqueezy/lemonsqueezy.js';
+import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+import { ServiceError } from '@/exceptions';
+import { PlanSubscription } from '@/system/models';
+import { configureLemonSqueezy } from './utils';
+import events from '@/subscribers/events';
+import { IOrganizationSubscriptionChanged } from './types';
+
+@Service()
+export class LemonChangeSubscriptionPlan {
+  @Inject()
+  private eventPublisher: EventPublisher;
+
+  /**
+   * Changes the given organization subscription plan.
+   * @param {number} tenantId - Tenant id.
+   * @param {number} newVariantId - New variant id.
+   * @returns {Promise<void>}
+   */
+  public async changeSubscriptionPlan(tenantId: number, newVariantId: number) {
+    configureLemonSqueezy();
+
+    const subscription = await PlanSubscription.query().findOne({
+      tenantId,
+      slug: 'main',
+    });
+    const lemonSubscriptionId = subscription.lemonSubscriptionId;
+
+    // Send request to Lemon Squeezy to change the subscription.
+    const updatedSub = await updateSubscription(lemonSubscriptionId, {
+      variantId: newVariantId,
+    });
+    if (updatedSub.error) {
+      throw new ServiceError('SOMETHING_WENT_WRONG');
+    }
+    // Triggers `onSubscriptionPlanChanged` event.
+    await this.eventPublisher.emitAsync(
+      events.subscription.onSubscriptionPlanChanged,
+      {
+        tenantId,
+        lemonSubscriptionId,
+        newVariantId,
+      } as IOrganizationSubscriptionChanged
+    );
+  }
+}