fix(stripe): update subscription webhook handling should use customer id as a fallback

demo/nextjs/lib/auth.ts

@@ -20,6 +20,7 @@ import { nextCookies } from "better-auth/next-js";
 import { passkey } from "better-auth/plugins/passkey";
 import { stripe } from "@better-auth/stripe";
 import { Stripe } from "stripe";
+import Database from "better-sqlite3";
 
 const from = process.env.BETTER_AUTH_EMAIL || "delivered@resend.dev";
 const to = process.env.TEST_EMAIL || "";
@@ -50,10 +51,7 @@ const STARTER_PRICE_ID = {
 
 export const auth = betterAuth({
 	appName: "Better Auth Demo",
-	database: {
-		dialect,
-		type: process.env.USE_MYSQL ? "mysql" : "sqlite",
-	},
+	database: new Database("stripe-1.db"),
 	emailVerification: {
 		async sendVerificationEmail({ user, url }) {
 			const res = await resend.emails.send({

packages/stripe/src/hooks.ts

@@ -93,19 +93,32 @@ export async function onSubscriptionUpdated(
 		const subscriptionUpdated = event.data.object as Stripe.Subscription;
 		const priceId = subscriptionUpdated.items.data[0].price.id;
 		const plan = await getPlanByPriceId(options, priceId);
-		const stripeId = subscriptionUpdated.id;
-		const subscription = await ctx.context.adapter.findOne<Subscription>({
+
+		const referenceId = subscriptionUpdated.metadata?.referenceId;
+		const subscriptionId = subscriptionUpdated.id;
+		const customerId = subscriptionUpdated.customer.toString();
+		let subscription = await ctx.context.adapter.findOne<Subscription>({
 			model: "subscription",
-			where: [
-				{
-					field: "stripeSubscriptionId",
-					value: stripeId,
-				},
-			],
+			where: referenceId
+				? [{ field: "referenceId", value: referenceId }]
+				: subscriptionId
+					? [{ field: "stripeSubscriptionId", value: subscriptionId }]
+					: [],
 		});
 		if (!subscription) {
+			const subs = await ctx.context.adapter.findMany<Subscription>({
+				model: "subscription",
+				where: [{ field: "stripeCustomerId", value: customerId }],
+			});
+			if (subs.length > 1) {
+				logger.warn(
+					`Stripe webhook error: Multiple subscriptions found for customerId: ${customerId} and no referenceId or subscriptionId is provided`,
+				);
 				return;
 			}
+			subscription = subs[0];
+		}
+
 		const seats = subscriptionUpdated.items.data[0].quantity;
 		await ctx.context.adapter.update({
 			model: "subscription",
@@ -125,8 +138,8 @@ export async function onSubscriptionUpdated(
 			},
 			where: [
 				{
-					field: "stripeSubscriptionId",
-					value: subscriptionUpdated.id,
+					field: "referenceId",
+					value: subscription.referenceId,
 				},
 			],
 		});
@@ -170,7 +183,7 @@ export async function onSubscriptionUpdated(
 			}
 		}
 	} catch (error: any) {
-		logger.error(`Stripe webhook failed. Error: ${error.message}`);
+		logger.error(`Stripe webhook failed. Error: ${error}`);
 	}
 }
 
@@ -217,6 +230,6 @@ export async function onSubscriptionDeleted(
 			}
 		}
 	} catch (error: any) {
-		logger.error(`Stripe webhook failed. Error: ${error.message}`);
+		logger.error(`Stripe webhook failed. Error: ${error}`);
 	}
 }

packages/stripe/src/index.ts

@@ -366,7 +366,6 @@ export const stripe = <O extends StripeOptions>(options: O) => {
 									},
 								],
 							});
-						console.log({ subscription });
 						if (
 							!subscription ||
 							subscription.cancelAtPeriodEnd ||
@@ -382,7 +381,6 @@ export const stripe = <O extends StripeOptions>(options: O) => {
 						const currentSubscription = stripeSubscription.data.find(
 							(sub) => sub.id === subscription.stripeSubscriptionId,
 						);
-						console.log({ currentSubscription });
 						if (currentSubscription?.cancel_at_period_end === true) {
 							await ctx.context.adapter.update({
 								model: "subscription",

packages/stripe/src/stripe.test.ts

@@ -592,7 +592,6 @@ describe("stripe", async () => {
 
 		mockStripeForEvents.webhooks.constructEvent.mockReturnValue(updateEvent);
 		await eventTestAuth.handler(updateRequest);
-
 		expect(onSubscriptionUpdate).toHaveBeenCalledWith(
 			expect.objectContaining({
 				event: expect.any(Object),