Implement Pay per Use Model for Direct Payments#5
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Transitioned from a strict Top-up model to a Pay per Use model. Users can now pay directly via saved cards or Apple Pay for QR scan transactions. Changes: - Added process_direct_payout_transaction RPC for atomic funding and payout ledger entries. - Enhanced payout-executor Edge Function to charge Omise cards directly for pay-per-use flows. - Updated Frontend UI to support real-time payment method selection and fee transparency in ConfirmPaymentScreen. - Integrated FeeCalculator into the confirmation flow for card surcharges. - Fixed missing security middleware in Go API. How to test: 1. Environment: Local development (Backend services + Flutter app). 2. Step-by-step: a. Scan a QR code or enter a PromptPay ID. b. On the Review Payment screen, tap on the Payment Method. c. Select a Saved Card instead of 'Paycif Balance'. d. Observe the 'Fee' row appearing with the calculated surcharge. e. Slide to Pay and complete biometric auth. 3. Test Credentials: Use standard test cards (4242...). 4. Expected Result: The transaction is successful. Two ledger entries (Top-up and Payout) are created atomically, and the recipient receives the amount while the card is charged the gross amount. Co-authored-by: MethasMP <89190477+MethasMP@users.noreply.github.com>
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This PR implements the "Pay per Use" model, allowing users to pay directly via credit cards or Apple Pay for QR transactions without manual top-ups.
Key technical changes:
process_direct_payout_transactionRPC to ensure ledger integrity by atomically recording the funding top-up and the external payout.payout-executorEdge Function to handle card charging via Omise before invoking the direct payout RPC.ConfirmPaymentScreento provide a premium selection experience for payment methods.PR created automatically by Jules for task 12593253480382621305 started by @MethasMP