add server to monorepo.

packages/server/src/api/controllers/Subscription/PaymentMethod.ts

@@ -0,0 +1,31 @@
+import { Inject } from 'typedi';
+import { Request, Response } from 'express';
+import { Plan } from '@/system/models';
+import BaseController from '@/api/controllers/BaseController';
+import SubscriptionService from '@/services/Subscription/SubscriptionService';
+
+export default class PaymentMethodController extends BaseController {
+  @Inject()
+  subscriptionService: SubscriptionService;
+
+  /**
+   * Validate the given plan slug exists on the storage.
+   * 
+   * @param {Request} req 
+   * @param {Response} res 
+   * @param {NextFunction} next
+   * 
+   * @return {Response|void}
+   */
+  async validatePlanSlugExistance(req: Request, res: Response, next: Function) {
+    const { planSlug } = this.matchedBodyData(req);
+    const foundPlan = await Plan.query().where('slug', planSlug).first();
+
+    if (!foundPlan) {
+      return res.status(400).send({
+        errors: [{ type: 'PLAN.SLUG.NOT.EXISTS', code: 110 }],
+      });
+    }
+    next();
+  }
+}