feat(server): api endpoint to get Plaid link token

packages/server/src/api/controllers/Banking/BankingController.ts

@@ -0,0 +1,18 @@
+import Container, { Inject, Service } from 'typedi';
+import { Router } from 'express';
+import BaseController from '@/api/controllers/BaseController';
+import { PlaidBankingController } from './PlaidBankingController';
+
+@Service()
+export class BankingController extends BaseController {
+  /**
+   * Router constructor.
+   */
+  router() {
+    const router = Router();
+
+    router.use('/plaid', Container.get(PlaidBankingController).router());
+
+    return router;
+  }
+}

packages/server/src/api/controllers/Banking/PlaidBankingController.ts

@@ -0,0 +1,29 @@
+import { Inject, Service } from 'typedi';
+import { Router, Request, Response } from 'express';
+import BaseController from '@/api/controllers/BaseController';
+import { PlaidApplication } from '@/services/Banking/Plaid/PlaidApplication';
+
+@Service()
+export class PlaidBankingController extends BaseController {
+  @Inject()
+  private plaidApp: PlaidApplication;
+
+  /**
+   * Router constructor.
+   */
+  router() {
+    const router = Router();
+
+    router.post('/link-token', this.linkToken.bind(this));
+
+    return router;
+  }
+
+  private async linkToken(req: Request, res: Response) {
+    const { tenantId } = req;
+
+    const linkToken = await this.plaidApp.getLinkToken(tenantId);
+
+    return res.status(200).send(linkToken);
+  }
+}