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igny8/master-docs/30-frontend/accounts/PAYMENT-METHODS-PAGE.md
IGNY8 VPS (Salman) 3cbed65601 revamps docs complete
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# Payment Methods Page
## Purpose
Display available payment methods for the tenant and support selection for purchases/subscriptions. Methods originate from backend billing configs and are reused across plan changes and credit purchases.
## Code Locations (exact paths)
- Consolidated flows: `frontend/src/pages/account/PlansAndBillingPage.tsx` (tab `payment-methods`)
- Purchase credits: `frontend/src/pages/account/PurchaseCreditsPage.tsx` (method selection + manual payment proof)
- API: `frontend/src/services/billing.api` (`getAvailablePaymentMethods`, `createPaymentMethod`, `deletePaymentMethod`, `setDefaultPaymentMethod`)
## High-Level Responsibilities
- Fetch account-scoped payment methods (bank transfer, local wallet, manual/other).
- Allow choosing a default method for purchases/subscriptions.
- Provide instructions/details (bank or wallet) for manual/offline flows.
## Detailed Behavior
- PlansAndBillingPage:
- On load, calls `getAvailablePaymentMethods()` with other billing calls; filters out disabled methods (`is_enabled === false`).
- Chooses preferred method for selection: bank_transfer, then manual, else default flag, else first item.
- Renders payment-methods tab listing methods, default flag, instructions; supports create/delete/default actions via `createPaymentMethod`, `deletePaymentMethod`, `setDefaultPaymentMethod`.
- Selection state (`selectedPaymentMethod`) is reused when purchasing packages or creating subscriptions.
- PurchaseCreditsPage:
- Fetches methods and auto-selects bank_transfer, then manual, else first.
- For bank/local/manual methods, shows instructions and bank/wallet details and collects `transaction_reference` + `notes` when the payment is manual/offline.
- Stripe/PayPal placeholders show “integration pending”.
## Data Structures / Models Involved (no code)
- `PaymentMethod` DTO: `id`, `type` (`bank_transfer`, `local_wallet`, `manual`, `stripe`, `paypal`), `display_name`, `instructions`, optional `bank_details`/`wallet_details`, `is_default`, `is_enabled`.
## Execution Flow
- Load methods → set local `paymentMethods` → derive `selectedPaymentMethod`.
- User selects method → stored in component state; used by purchase/subscription handlers.
- Optional CRUD (create/delete/default) triggered in `PlansAndBillingPage` tab using billing API helpers.
## Cross-Module Interactions
- Used by credit purchase (`purchaseCreditPackage`) and subscription updates (`createSubscription`, `cancelSubscription`) within `PlansAndBillingPage`.
## State Transitions
- Local selection state only; backend default flag can be updated via `setDefaultPaymentMethod`.
## Error Handling
- Errors surface via toast/banner in `PlansAndBillingPage`; inline error message in `PurchaseCreditsPage` for missing selections or failed calls.
## Tenancy Rules
- All calls are account-scoped by backend auth; no client multi-tenant switching.
## Billing Rules (if applicable)
- Selected method is passed to credit purchase and subscription creation; manual methods require proof submission (transaction reference) and remain pending approval server-side.
## Background Tasks / Schedulers (if applicable)
- None on client.
## Key Design Considerations
- Prefers offline-safe methods (bank/manual) to avoid blocking when card gateways are unavailable.
- Keeps selection sticky within the session to reduce user friction across tabs.
## How Developers Should Work With This Module
- To add a new gateway type, extend `PaymentMethod` type, update selection logic, and render gateway-specific instructions or redirection flows.
- Keep manual/offline instructions editable via backend configs; surface them read-only in the UI.