feat: make billing page functional

packages/lib/ee/LICENSE.md

@@ -0,0 +1 @@
+<!-- This is a stub -->

packages/lib/ee/stripe/create-customer.ts

@@ -0,0 +1,32 @@
+import { prisma } from '@documenso/prisma';
+import { User } from '@documenso/prisma/client';
+
+import { stripe } from '../../server-only/stripe';
+import { getSubscriptionByUserId } from '../../server-only/subscription/get-subscription-by-user-id';
+
+export type CreateCustomerOptions = {
+  user: User;
+};
+
+export const createCustomer = async ({ user }: CreateCustomerOptions) => {
+  const existingSubscription = await getSubscriptionByUserId({ userId: user.id });
+
+  if (existingSubscription) {
+    throw new Error('User already has a subscription');
+  }
+
+  const customer = await stripe.customers.create({
+    name: user.name ?? undefined,
+    email: user.email,
+    metadata: {
+      userId: user.id,
+    },
+  });
+
+  return await prisma.subscription.create({
+    data: {
+      userId: user.id,
+      customerId: customer.id,
+    },
+  });
+};

packages/lib/ee/stripe/get-portal-session.ts

@@ -0,0 +1,19 @@
+'use server';
+
+import { stripe } from '../../server-only/stripe';
+
+export type GetPortalSessionOptions = {
+  customerId: string;
+  returnUrl: string;
+};
+
+export const getPortalSession = async ({ customerId, returnUrl }: GetPortalSessionOptions) => {
+  'use server';
+
+  const session = await stripe.billingPortal.sessions.create({
+    customer: customerId,
+    return_url: returnUrl,
+  });
+
+  return session.url;
+};

packages/lib/package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "main": "./index.ts",
   "types": "./index.ts",
-  "license": "MIT",
+  "license": "SEE LICENSE IN LICENSE.md",
   "files": [
     "client-only/",
     "server-only/",

packages/lib/server-only/subscription/get-subscription-by-user-id.ts

@@ -0,0 +1,15 @@
+'use server';
+
+import { prisma } from '@documenso/prisma';
+
+export type GetSubscriptionByUserIdOptions = {
+  userId: number;
+};
+
+export const getSubscriptionByUserId = ({ userId }: GetSubscriptionByUserIdOptions) => {
+  return prisma.subscription.findFirst({
+    where: {
+      userId,
+    },
+  });
+};