juntekim.com/stripe_to_invoice/app/api/stripe/callback/route.ts
2026-02-01 21:51:04 +00:00

130 lines
3.4 KiB
TypeScript

import { NextRequest, NextResponse } from "next/server";
import { eq } from "drizzle-orm";
import { db } from "@/lib/db";
import { stripeAccounts } from "@/lib/schema";
import { getUserFromSession } from "@/lib/auth/get-user";
type StripeOAuthResponse = {
access_token: string;
refresh_token: string;
stripe_user_id: string;
scope: string;
};
export async function GET(req: NextRequest) {
const user = await getUserFromSession();
if (!user) {
return NextResponse.redirect(
new URL("/login", process.env.NEXT_PUBLIC_BASE_URL)
);
}
const { searchParams } = new URL(req.url);
const code = searchParams.get("code");
const error = searchParams.get("error");
if (error) {
console.error("Stripe OAuth error:", error);
return NextResponse.redirect(
new URL(
"/connect/stripe?error=oauth_failed",
process.env.NEXT_PUBLIC_BASE_URL
)
);
}
if (!code) {
return NextResponse.json(
{ error: "Missing OAuth code" },
{ status: 400 }
);
}
// --------------------------------------------------
// Exchange OAuth code for Stripe account
// --------------------------------------------------
const tokenRes = await fetch("https://connect.stripe.com/oauth/token", {
method: "POST",
headers: { "Content-Type": "application/x-www-form-urlencoded" },
body: new URLSearchParams({
grant_type: "authorization_code",
code,
client_secret: process.env.STRIPE_SECRET_KEY!,
}),
});
if (!tokenRes.ok) {
const text = await tokenRes.text();
console.error("Stripe token exchange failed:", text);
return NextResponse.redirect(
new URL(
"/connect/stripe?error=token_exchange_failed",
process.env.NEXT_PUBLIC_BASE_URL
)
);
}
const data = (await tokenRes.json()) as StripeOAuthResponse;
const stripeAccountId = data.stripe_user_id;
// --------------------------------------------------
// Check for existing Stripe account connection
// --------------------------------------------------
const existing = await db
.select()
.from(stripeAccounts)
.where(eq(stripeAccounts.stripeAccountId, stripeAccountId))
.limit(1);
if (existing.length > 0) {
const record = existing[0];
// Same user → idempotent success
if (record.userId === user.id) {
console.log("Stripe already connected for this user", {
stripeAccountId,
userId: user.id,
});
return NextResponse.redirect(
new URL("/connect/stripe/success", process.env.APP_URL)
);
}
// Different user → block
console.warn("Stripe account already linked to another user", {
stripeAccountId,
existingUserId: record.userId,
currentUserId: user.id,
});
return NextResponse.redirect(
new URL(
"/connect/stripe?error=already_connected",
process.env.NEXT_PUBLIC_BASE_URL
)
);
}
// --------------------------------------------------
// Insert new Stripe connection
// --------------------------------------------------
await db.insert(stripeAccounts).values({
userId: user.id,
stripeAccountId,
// accessToken / refreshToken later if you decide to store them
});
console.log("Stripe OAuth connected", {
stripeAccountId,
userId: user.id,
scope: data.scope,
});
return NextResponse.redirect(
new URL("/connect/stripe/success", process.env.APP_URL)
);
}