- Implemented `refund` and `reverse` methods in `PaymentGatewayInterface`.
- Added `PaymentRefundResult` class to handle refund operation results.
- Enhanced `MockGateway` and `SepGateway` to support refund and reversal operations.
- Updated `PaymentManager` to include `refundPayment` and `reversePayment` methods for handling refunds and reversals in transactions.
- Modified `ClinicSubscriptionRepository` and `SubscriptionService` to manage subscriptions during refunds.
- Added admin API endpoints for processing refunds and reversals.
- Updated security headers to allow form actions to the sandbox environment.
- Documented the new refund and reversal features in the API documentation.
- Refactor PaymentController to delegate payment processing to PaymentManager.
- Add findByOrderIdForUpdate method in PaymentRepository for pessimistic locking.
- Create PaymentLog entity and repository for auditing payment actions.
- Implement startGatewayHandoff and processCallback methods in PaymentManager.
- Introduce transaction handling and logging for payment verification.
- Update payment flow to ensure idempotency and prevent race conditions.
- Enhance security by logging sensitive actions without exposing credentials.
- Update database schema with migration for payment_logs table.
- Document changes in payment flow architecture.
hamed