feat: Convert helpers to use JS files

packages/backend/src/helpers/billing/paddle.ee.js

@@ -0,0 +1,53 @@
+// TODO: replace with axios-with-proxy when needed
+import axios from 'axios';
+import appConfig from '../../config/app';
+import { DateTime } from 'luxon';
+
+const PADDLE_VENDOR_URL = appConfig.isDev
+  ? 'https://sandbox-vendors.paddle.com'
+  : 'https://vendors.paddle.com';
+
+const axiosInstance = axios.create({ baseURL: PADDLE_VENDOR_URL });
+
+const getSubscription = async (subscriptionId) => {
+  const data = {
+    vendor_id: appConfig.paddleVendorId,
+    vendor_auth_code: appConfig.paddleVendorAuthCode,
+    subscription_id: subscriptionId,
+  };
+
+  const response = await axiosInstance.post(
+    '/api/2.0/subscription/users',
+    data
+  );
+  const subscription = response.data.response[0];
+  return subscription;
+};
+
+const getInvoices = async (subscriptionId) => {
+  // TODO: iterate over previous subscriptions and include their invoices
+  const data = {
+    vendor_id: appConfig.paddleVendorId,
+    vendor_auth_code: appConfig.paddleVendorAuthCode,
+    subscription_id: subscriptionId,
+    is_paid: 1,
+    from: DateTime.now().minus({ years: 3 }).toISODate(),
+    to: DateTime.now().plus({ days: 3 }).toISODate(),
+  };
+
+  const response = await axiosInstance.post(
+    '/api/2.0/subscription/payments',
+    data
+  );
+
+  const invoices = response.data.response;
+
+  return invoices;
+};
+
+const paddleClient = {
+  getSubscription,
+  getInvoices,
+};
+
+export default paddleClient;