feat: stripe integration

lib/auth-client.ts

@@ -1,12 +1,6 @@
-import { stripeClient } from "@better-auth/stripe/client"
 import { createAuthClient } from "better-auth/client"
 import { emailOTPClient } from "better-auth/client/plugins"
 
 export const authClient = createAuthClient({
-  plugins: [
-    emailOTPClient(),
-    stripeClient({
-      subscription: true,
-    }),
-  ],
+  plugins: [emailOTPClient()],
 })

lib/auth.ts

@@ -1,7 +1,5 @@
 import config from "@/lib/config"
-import { createUserDefaults } from "@/models/defaults"
 import { getSelfHostedUser, getUserByEmail, getUserById } from "@/models/users"
-import { stripe } from "@better-auth/stripe"
 import { User } from "@prisma/client"
 import { betterAuth } from "better-auth"
 import { prismaAdapter } from "better-auth/adapters/prisma"
@@ -12,7 +10,6 @@ import { headers } from "next/headers"
 import { redirect } from "next/navigation"
 import { prisma } from "./db"
 import { resend, sendOTPCodeEmail } from "./email"
-import { isStripeEnabled, stripeClient } from "./stripe"
 
 export type UserProfile = {
   id: string
@@ -21,7 +18,7 @@ export type UserProfile = {
   avatar?: string
   storageUsed: number
   storageLimit: number
-  tokenBalance: number
+  aiBalance: number
 }
 
 export const auth = betterAuth({
@@ -47,15 +44,6 @@ export const auth = betterAuth({
     generateId: false,
     cookiePrefix: "taxhacker",
   },
-  databaseHooks: {
-    user: {
-      create: {
-        after: async (user) => {
-          await createUserDefaults(user.id)
-        },
-      },
-    },
-  },
   plugins: [
     emailOTP({
       disableSignUp: config.auth.disableSignup,
@@ -69,13 +57,6 @@ export const auth = betterAuth({
         await sendOTPCodeEmail({ email, otp })
       },
     }),
-    isStripeEnabled(stripeClient)
-      ? stripe({
-          stripeClient: stripeClient!,
-          stripeWebhookSecret: config.stripe.webhookSecret,
-          createCustomerOnSignUp: true,
-        })
-      : { id: "stripe", endpoints: {} },
     nextCookies(), // make sure this is the last plugin in the array
   ],
 })
@@ -113,3 +94,10 @@ export async function getCurrentUser(): Promise<User> {
   // No session or user found
   redirect(config.auth.loginUrl)
 }
+
+export function isSubscriptionExpired(user: User) {
+  if (config.selfHosted.isEnabled) {
+    return false
+  }
+  return user.membershipExpiresAt && user.membershipExpiresAt < new Date()
+}

lib/config.ts

@@ -36,6 +36,7 @@ const config = {
   },
   ai: {
     openaiApiKey: env.OPENAI_API_KEY,
+    modelName: "gpt-4o-mini",
   },
   auth: {
     secret: env.BETTER_AUTH_SECRET,
@@ -45,6 +46,8 @@ const config = {
   stripe: {
     secretKey: env.STRIPE_SECRET_KEY,
     webhookSecret: env.STRIPE_WEBHOOK_SECRET,
+    paymentSuccessUrl: `${env.BASE_URL}/cloud/payment/success?session_id={CHECKOUT_SESSION_ID}`,
+    paymentCancelUrl: `${env.BASE_URL}/cloud`,
   },
   email: {
     apiKey: env.RESEND_API_KEY,

lib/stripe.ts

@@ -7,7 +7,50 @@ export const stripeClient: Stripe | null = config.stripe.secretKey
     })
   : null
 
-// Type guard to check if Stripe is initialized
-export const isStripeEnabled = (client: Stripe | null): client is Stripe => {
-  return client !== null
+export type Plan = {
+  code: string
+  name: string
+  description: string
+  benefits: string[]
+  price: string
+  stripePriceId: string
+  limits: {
+    storage: number
+    ai: number
+  }
+  isAvailable: boolean
+}
+
+export const PLANS: Record<string, Plan> = {
+  unlimited: {
+    code: "unlimited",
+    name: "Unlimited",
+    description: "Special unlimited plan",
+    benefits: ["Unlimited storage", "Unlimited AI analysis", "Unlimited everything"],
+    price: "",
+    stripePriceId: "",
+    limits: {
+      storage: -1,
+      ai: -1,
+    },
+    isAvailable: false,
+  },
+  early: {
+    code: "early",
+    name: "Early Adopter",
+    description: "Special plan for our early users",
+    benefits: [
+      "512 Mb of storage",
+      "1000 AI file analysis",
+      "Unlimited transactions",
+      "Unlimited fields, categories and projects",
+    ],
+    price: "€50/year",
+    stripePriceId: "price_1RGzKUPKOUEUzVB3hVyo2n57",
+    limits: {
+      storage: 512 * 1024 * 1024,
+      ai: 1000,
+    },
+    isAvailable: true,
+  },
 }