Payments Overview

model subscription {
  id                   String    @id
  provider             Provider  @default(STRIPE)
  plan                 String
  referenceId          String?
  stripeCustomerId     String?
  stripeSubscriptionId String?
  polarSubscriptionId  String?
  polarCustomerId      String?
  productId            String?
  status               String?
  seats                Int?
  periodStart          DateTime?
  periodEnd            DateTime?
  cancelAtPeriodEnd    Boolean?
  trialStart           DateTime?
  trialEnd             DateTime?
  metadata             Json?
  user                 User?     @relation(fields: [userId], references: [id])
  userId               String?
}

import { createAuthClient } from "better-auth/react";
import { polarClient } from "@polar-sh/better-auth";
import { stripeClient } from "@better-auth/stripe/client";

export const authClient = createAuthClient({
  baseURL: process.env.NEXT_PUBLIC_SERVER_URL!,
  plugins: [
    polarClient(),
    stripeClient({
      subscription: true,
    }),
  ],
});

import { betterAuth } from "better-auth";
import { polar } from "@polar-sh/better-auth";
import { stripe } from "@better-auth/stripe";

export const auth = betterAuth({
  plugins: [
    polar({
      client: polarClient,
      createCustomerOnSignUp: true,
      // ... polar configuration
    }),
    stripe({
      stripeClient,
      createCustomerOnSignUp: true,
      // ... stripe configuration
    }),
  ],
});

// Get subscription status
const paymentDetails = await authClient.getPaymentDetails();
const isSubscribed = paymentDetails?.polar || paymentDetails?.stripe;

// Start checkout
await authClient.checkout({
  products: [productId],
  slug: productSlug,
});

// Get subscription status
const paymentDetails = await authClient.getPaymentDetails();
const isSubscribed = paymentDetails?.polar || paymentDetails?.stripe;

// Start checkout
await authClient.checkout({
  plan: productSlug,
});