PayPal:
- Document invasive KYC requirements (face scanning, government ID)
- Note that crypto is the privacy-preserving alternative
Adyen:
- Document integration approach (similar to Stripe)
- Include Python library usage, webhooks, credentials needed
- Status: not yet implemented
- Add stripe_payment_intent_id and stripe_charge_id columns to Invoice
- Store payment references during checkout for traceability
- Use idempotency key to prevent duplicate charges on retry
- Add Stripe webhook handler for payment_intent.succeeded, payment_failed,
charge.refunded, and charge.dispute.created events
- Consolidate PayPal webhooks into webhooks.py
- Add stripe.webhook_secret configuration for signature verification
Tests: 8 unit, 5 integration, 7 functional tests for Stripe functionality
