feat(ledger): transaction listing API

Author: GAlexIHU

api/v3/handlers/customers/credits/handler.go

@@ -3,13 +3,17 @@ package customerscredits
 import (
 	"context"
 
+	"github.com/alpacahq/alpacadecimal"
+
 	"github.com/openmeterio/openmeter/openmeter/billing/creditgrant"
 	"github.com/openmeterio/openmeter/openmeter/customer"
+	"github.com/openmeterio/openmeter/openmeter/ledger"
 	"github.com/openmeterio/openmeter/openmeter/ledger/customerbalance"
 	"github.com/openmeterio/openmeter/pkg/framework/transport/httptransport"
 )
 
 type customerBalanceFacade interface {
+	GetBalance(ctx context.Context, input customerbalance.GetBalanceInput) (alpacadecimal.Decimal, error)
 	GetBalances(ctx context.Context, input customerbalance.GetBalancesInput) ([]customerbalance.BalanceByCurrency, error)
 }
 
@@ -18,13 +22,16 @@ type Handler interface {
 	ListCreditGrants() ListCreditGrantsHandler
 	CreateCreditGrant() CreateCreditGrantHandler
 	GetCreditGrant() GetCreditGrantHandler
+	ListCreditTransactions() ListCreditTransactionsHandler
 }
 
 type handler struct {
 	resolveNamespace   func(ctx context.Context) (string, error)
 	customerService    customer.Service
 	balanceFacade      customerBalanceFacade
 	creditGrantService creditgrant.Service
+	ledger             ledger.Ledger
+	accountResolver    ledger.AccountResolver
 	options            []httptransport.HandlerOption
 }
 
@@ -33,13 +40,17 @@ func New(
 	customerService customer.Service,
 	balanceFacade customerBalanceFacade,
 	creditGrantService creditgrant.Service,
+	ledger ledger.Ledger,
+	accountResolver ledger.AccountResolver,
 	options ...httptransport.HandlerOption,
 ) Handler {
 	return &handler{
 		resolveNamespace:   resolveNamespace,
 		customerService:    customerService,
 		balanceFacade:      balanceFacade,
 		creditGrantService: creditGrantService,
+		ledger:             ledger,
+		accountResolver:    accountResolver,
 		options:            options,
 	}
 }