Security and Error Handling

[tsuchiyama-araya]

Tasks

There are changes for this task since stripe checkout will be implemented.

• Implement comprehensive error handling
  • Network failure recovery
  • Invalid payment method handling
  • Insufficient funds scenarios
  • Card declined responses
• Add security measures
  • Client-side input validation
  • CSRF protection for payment endpoints
  • PCI compliance considerations
  • Secure token handling
• User feedback and notifications
  • Toast notifications for payment status
  • Clear error messages with actionable advice
  • Loading states during async operations