3. Domain Interfaces (BIAN Service Domains)

[mrserverless]

• 3.1 Define domains/account.go interface
  • AccountService interface
  • RetrieveCurrentAccount(ctx context.Context, accountID string) (*models.Account, error)
  • RetrieveCurrentAccountBalance(ctx context.Context, accountID string) (*models.Balance, error)
  • Document BIAN alignment (Current Account Fulfillment service domain subset)
• 3.2 Define domains/transaction.go interface
  • TransactionService interface
  • RetrievePaymentTransaction(ctx context.Context, transactionID string) (*models.Transaction, error)
  • RetrievePaymentTransactionHistory(ctx context.Context, accountID string, opts HistoryOptions) ([]*models.Transaction, error)
  • HistoryOptions struct (date range, limit, offset)
  • Document BIAN alignment (Payment Execution service domain subset)
• 3.3 Define domains/balance.go interface
  • BalanceService interface
  • RetrieveAccountBalance(ctx context.Context, accountID string) ([]*models.Balance, error)
  • Document BIAN alignment (Account Balance Management subset)
• 3.4 Define domains/consent.go interface
  • ConsentService interface
  • RetrieveConsent(ctx context.Context, consentID string) (*models.Consent, error)
  • RetrieveConsentStatus(ctx context.Context, consentID string) (models.ConsentStatus, error)
  • Document BIAN alignment (Customer Consent Management subset)
• 3.5 Document interface contracts (godoc comments)
  • Expected behavior for each operation
  • Error conditions (not found, invalid input, internal errors)
  • Context cancellation handling

Source: openspec/changes/bootstrap-mvp-foundation/tasks.md