89 lines
2.9 KiB
TypeScript
89 lines
2.9 KiB
TypeScript
import { NextRequest, NextResponse } from 'next/server';
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import { auth } from '@/auth';
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import { stripe } from '@/lib/stripe';
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import { resolvePriceId } from '@/lib/billing/stripe-prices';
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import { prisma } from '@/lib/prisma';
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import { z } from 'zod';
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const bodySchema = z.object({
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tier: z.enum(['PRO', 'BUSINESS']),
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interval: z.enum(['month', 'year']),
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});
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export async function POST(req: NextRequest) {
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const session = await auth();
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if (!session?.user?.id || !session.user.email) {
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return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
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}
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const parsed = bodySchema.safeParse(await req.json());
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if (!parsed.success) {
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return NextResponse.json({ error: 'Invalid request body' }, { status: 400 });
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}
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const { tier, interval } = parsed.data;
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const userId = session.user.id;
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const userEmail = session.user.email;
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try {
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const priceId = resolvePriceId(tier, interval);
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const subscription = await prisma.subscription.findUnique({ where: { userId } });
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let customerId = subscription?.stripeCustomerId ?? undefined;
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if (customerId && customerId.startsWith('cus_mock')) {
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customerId = undefined;
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}
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if (!customerId) {
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const customer = await stripe.customers.create({
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email: userEmail,
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metadata: { userId },
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});
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customerId = customer.id;
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// Update DB to save the real Stripe customer ID
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await prisma.subscription.upsert({
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where: { userId },
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update: { stripeCustomerId: customerId },
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create: {
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userId,
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stripeCustomerId: customerId,
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tier: 'BASIC',
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status: 'ACTIVE',
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currentPeriodStart: new Date(),
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currentPeriodEnd: new Date(Date.now() + 30 * 24 * 3600 * 1000), // temp basic dates
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}
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});
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}
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const host = req.headers.get('x-forwarded-host') ?? req.headers.get('host') ?? 'localhost:3000';
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const proto = req.headers.get('x-forwarded-proto') ?? 'http';
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const origin = `${proto}://${host}`;
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const sessionParams = {
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customer: customerId,
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mode: 'subscription' as const,
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line_items: [{ price: priceId, quantity: 1 }],
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ui_mode: 'embedded_page',
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return_url: `${origin}/settings/billing?session_id={CHECKOUT_SESSION_ID}`,
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metadata: { userId, tier },
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subscription_data: { metadata: { userId, tier } },
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customer_update: { address: 'auto' },
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};
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const checkoutSession = await stripe.checkout.sessions.create(sessionParams as any);
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if (checkoutSession.client_secret) {
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return NextResponse.json({
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clientSecret: checkoutSession.client_secret,
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sessionId: checkoutSession.id,
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});
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}
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return NextResponse.json({ url: checkoutSession.url });
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} catch (error) {
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console.error('[billing/create-checkout]', error);
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return NextResponse.json({ error: 'Failed to create checkout session' }, { status: 500 });
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}
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}
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