Can I vibe code 2Checkout?

Build a custom subscription billing and payment orchestration service using Node.js, Express, PostgreSQL, and Stripe API.

1. DATA MODEL:
- Customer: id, email, stripe_customer_id, country_code, created_at.
- Plan: id, name, amount_cents, currency, billing_interval (day, month, year).
- Subscription: id, customer_id, plan_id, status (active, past_due, canceled), current_period_start, current_period_end, cancel_at_period_end.
- Invoice: id, subscription_id, stripe_invoice_id, amount_due_cents, status, paid_at.

2. CORE FUNCTIONALITY:
- Expose API endpoints to create payment intents, start subscriptions, cancel subscriptions, and update payment methods.
- Implement a webhooks handler listening to Stripe events: 'payment_intent.succeeded', 'invoice.paid', 'invoice.payment_failed', and 'customer.subscription.deleted'.
- Implement a subscription state machine that transitions status based on webhook events.
- Generate a hosted customer portal link allowing users to manage payment methods and view past invoices.

3. FAILURE MODES & EDGE CASES:
- Handle failed subscription payments by triggering a dunning lifecycle (send email, retry 3 times over 7 days, set status to past_due, then cancel).
- Ensure webhook idempotent processing by storing handled event IDs in a `processed_events` table.
- Handle timezone alignment and leap years for recurring billing date calculations.

4. OUT OF SCOPE:
- Direct credit card processing or PCI card data storage (delegate entirely to Stripe Elements/Tokens).
- Local tax calculation or tax remittance engines.
- Multi-acquirer fallback routing.

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