add server to monorepo.

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

@@ -0,0 +1,80 @@
+import { Inject } from 'typedi';
+import { Tenant, Plan } from '@/system/models';
+import { IPaymentContext } from '@/interfaces';
+import { NotAllowedChangeSubscriptionPlan } from '@/exceptions';
+
+export default class Subscription<PaymentModel> {
+  paymentContext: IPaymentContext | null;
+
+  @Inject('logger')
+  logger: any;
+
+  /**
+   * Constructor method.
+   * @param {IPaymentContext}
+   */
+  constructor(payment?: IPaymentContext) {
+    this.paymentContext = payment;
+  }
+
+  /**
+   * Give the tenant a new subscription.
+   * @param {Tenant} tenant
+   * @param {Plan} plan
+   * @param {string} invoiceInterval
+   * @param {number} invoicePeriod
+   * @param {string} subscriptionSlug
+   */
+  protected async newSubscribtion(
+    tenant,
+    plan,
+    invoiceInterval: string,
+    invoicePeriod: number,
+    subscriptionSlug: string = 'main'
+  ) {
+    const subscription = await tenant
+      .$relatedQuery('subscriptions')
+      .modify('subscriptionBySlug', subscriptionSlug)
+      .first();
+
+    // No allowed to re-new the the subscription while the subscription is active.
+    if (subscription && subscription.active()) {
+      throw new NotAllowedChangeSubscriptionPlan();
+
+      // In case there is already subscription associated to the given tenant renew it.
+    } else if (subscription && subscription.inactive()) {
+      await subscription.renew(invoiceInterval, invoicePeriod);
+
+      // No stored past tenant subscriptions create new one.
+    } else {
+      await tenant.newSubscription(
+        plan.id,
+        invoiceInterval,
+        invoicePeriod,
+        subscriptionSlug
+      );
+    }
+  }
+
+  /**
+   * Subscripe to the given plan.
+   * @param {Plan} plan
+   * @throws {NotAllowedChangeSubscriptionPlan}
+   */
+  public async subscribe(
+    tenant: Tenant,
+    plan: Plan,
+    paymentModel?: PaymentModel,
+    subscriptionSlug: string = 'main'
+  ) {
+    await this.paymentContext.makePayment(paymentModel, plan);
+
+    return this.newSubscribtion(
+      tenant,
+      plan,
+      plan.invoiceInterval,
+      plan.invoicePeriod,
+      subscriptionSlug
+    );
+  }
+}