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feat: Enhance PayPal integration with production-grade features#788

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coderolisa wants to merge 1 commit into
Calebux:mainfrom
coderolisa:fix/paypal-production-enhancements
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feat: Enhance PayPal integration with production-grade features#788
coderolisa wants to merge 1 commit into
Calebux:mainfrom
coderolisa:fix/paypal-production-enhancements

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@coderolisa
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CLOSE #476

- Add automatic retry logic with exponential backoff for transient failures
- Implement PayPal webhook handler for real-time payment status updates
- Add database idempotency checks to prevent duplicate payments
- Create webhook_events table for audit trail and idempotency
- Enhance error handling with specific error codes and detailed messages
- Add comprehensive integration tests for end-to-end payment flows
- Create detailed documentation for PayPal integration
- Update DEBT.md to reflect completed PayPal implementation
- Add PAYPAL_WEBHOOK_ID configuration for webhook signature verification

Acceptance Criteria Met:
✅ No mocked PayPal success path in production code
✅ Payment records include real provider transaction identifiers
✅ End-to-end payment tests cover success and failure scenarios
✅ Failure/retry handling implemented with exponential backoff
✅ DB records reflect real provider status via webhooks

Files Changed:
- Enhanced: client/lib/paypal-service.ts (retry logic, error handling)
- Enhanced: client/lib/payment-service.ts (idempotency checks)
- Created: client/app/api/webhooks/paypal/route.ts (webhook handler)
- Created: client/scripts/022_create_webhook_events.sql (migration)
- Created: client/__tests__/integration/paypal-payment-flow.test.ts
- Created: client/app/api/webhooks/paypal/__tests__/route.test.ts
- Created: docs/PAYPAL_INTEGRATION.md (comprehensive guide)
- Updated: DEBT.md (removed incorrect issue entry)
- Updated: client/.env.example (added PAYPAL_WEBHOOK_ID)

Issue: PayPal processing path enhancements for production readiness
@coderolisa coderolisa requested a review from Calebux as a code owner June 1, 2026 08:06
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drips-wave Bot commented Jun 1, 2026

@coderolisa Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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Replace mocked PayPal flow with real integration or explicit feature flag

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