Serverless Stripe Plugin

This plugin is designed for the Serverless Framework. It automates the creation of Stripe webhooks and binds them to serverless functions. It also provides some basic functionality for creating products and prices to them (the focus is is to help create subscriptions that utilize those).

Steps for using this plugin:

1. Install and configure the serverless-domain-manager plugin.

2. Generate a Stripe API key. You'll need permissions for managing webhooks, products, customer portal and prices. Also make sure you have aws rights to put and read aws ssm parameters

3. Modify your serverless configuration as shown below:

     custom: {
       stripe: [
         {
           accountId: 'Default',
           apiKey: 'my-stripe-api-key',
           webhooks: [
             {
               functionName: 'webhookHandler',
               events: [
                 'invoice.payment_succeeded',
               ],
               webhookSecretEnvVariableName: 'stripeWebhookSecret',
             },
           ],
           products: [
             {
               name: 'Subscription',
               internal: {
                 id: 'subscription',
                 description: 'Subscription product',
               },
               prices: [
                 {
                   id: 'price_sweden',
                   price: 9900,
                   currency: 'sek',
                   interval: 'year',
                   countryCode: 'SE',
                 },
               ],
             },
           ],
           billingPortals: [
             {
               configuration: {...}, //Stripe.BillingPortal.ConfigurationCreateParams
               internalId: 'portal2',
               envVariableName: 'customerSupportPortalId',
             },
           ],
         }
       ],
       domain: {
         // Please note these are serverless-domain-manager configurations but they're also used in this plugin
         domainName: "mydomain.com",
         basePath: "my-api",
       },
     },

4. Develop the webhookHandler function. The Stripe webhook endpoint secret will be available as process.env.stripeWebhookSecret (or under whatever name you've configured in webhookSecretEnvVariableName).

5. If you add any products, the generated Stripe product id will be accessible through environment variables, using the internal id (e.g., process.env["subscription"] in this example). The same applies to product prices (e.g., process.env["price_sweden"] for this case).

6. Deploy your Serverless application.

You can refer to the source code provided if you're interested in the underlying implementation of this plugin.