interface refactoring

api/gateway/mntx/client/client.go

@@ -5,12 +5,15 @@ import (
 	"strings"
 	"time"
 
+	"github.com/shopspring/decimal"
 	"github.com/tech/sendico/pkg/merrors"
+	connectorv1 "github.com/tech/sendico/pkg/proto/connector/v1"
+	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"
 	mntxv1 "github.com/tech/sendico/pkg/proto/gateway/mntx/v1"
-	unifiedv1 "github.com/tech/sendico/pkg/proto/gateway/unified/v1"
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/protobuf/types/known/structpb"
 )
 
 // Client wraps the Monetix gateway gRPC API.
@@ -22,9 +25,14 @@ type Client interface {
 	Close() error
 }
 
+type grpcConnectorClient interface {
+	SubmitOperation(ctx context.Context, in *connectorv1.SubmitOperationRequest, opts ...grpc.CallOption) (*connectorv1.SubmitOperationResponse, error)
+	GetOperation(ctx context.Context, in *connectorv1.GetOperationRequest, opts ...grpc.CallOption) (*connectorv1.GetOperationResponse, error)
+}
+
 type gatewayClient struct {
 	conn   *grpc.ClientConn
-	client unifiedv1.UnifiedGatewayServiceClient
+	client grpcConnectorClient
 	cfg    Config
 	logger *zap.Logger
 }
@@ -44,12 +52,12 @@ func New(ctx context.Context, cfg Config, opts ...grpc.DialOption) (Client, erro
 
 	conn, err := grpc.DialContext(dialCtx, cfg.Address, dialOpts...)
 	if err != nil {
-		return nil, merrors.Internal("mntx: dial failed: " + err.Error())
+		return nil, merrors.Internal("mntx: dial failed: "+err.Error())
 	}
 
 	return &gatewayClient{
 		conn:   conn,
-		client: unifiedv1.NewUnifiedGatewayServiceClient(conn),
+		client: connectorv1.NewConnectorServiceClient(conn),
 		cfg:    cfg,
 		logger: cfg.Logger,
 	}, nil
@@ -70,37 +78,253 @@ func (g *gatewayClient) callContext(ctx context.Context, method string) (context
 	if timeout <= 0 {
 		timeout = 5 * time.Second
 	}
-	fields := []zap.Field{
-		zap.String("method", method),
-		zap.Duration("timeout", timeout),
+	if g.logger != nil {
+		fields := []zap.Field{
+			zap.String("method", method),
+			zap.Duration("timeout", timeout),
+		}
+		if deadline, ok := ctx.Deadline(); ok {
+			fields = append(fields, zap.Time("parent_deadline", deadline), zap.Duration("parent_deadline_in", time.Until(deadline)))
+		}
+		g.logger.Info("Mntx gateway client call timeout applied", fields...)
 	}
-	if deadline, ok := ctx.Deadline(); ok {
-		fields = append(fields, zap.Time("parent_deadline", deadline), zap.Duration("parent_deadline_in", time.Until(deadline)))
-	}
-	g.logger.Info("Mntx gateway client call timeout applied", fields...)
 	return context.WithTimeout(ctx, timeout)
 }
 
 func (g *gatewayClient) CreateCardPayout(ctx context.Context, req *mntxv1.CardPayoutRequest) (*mntxv1.CardPayoutResponse, error) {
 	ctx, cancel := g.callContext(ctx, "CreateCardPayout")
 	defer cancel()
-	return g.client.CreateCardPayout(ctx, req)
+	operation, err := operationFromCardPayout(req)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := g.client.SubmitOperation(ctx, &connectorv1.SubmitOperationRequest{Operation: operation})
+	if err != nil {
+		return nil, err
+	}
+	if resp.GetReceipt() != nil && resp.GetReceipt().GetError() != nil {
+		return nil, connectorError(resp.GetReceipt().GetError())
+	}
+	return &mntxv1.CardPayoutResponse{Payout: payoutFromReceipt(req.GetPayoutId(), resp.GetReceipt())}, nil
 }
 
 func (g *gatewayClient) CreateCardTokenPayout(ctx context.Context, req *mntxv1.CardTokenPayoutRequest) (*mntxv1.CardTokenPayoutResponse, error) {
 	ctx, cancel := g.callContext(ctx, "CreateCardTokenPayout")
 	defer cancel()
-	return g.client.CreateCardTokenPayout(ctx, req)
+	operation, err := operationFromTokenPayout(req)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := g.client.SubmitOperation(ctx, &connectorv1.SubmitOperationRequest{Operation: operation})
+	if err != nil {
+		return nil, err
+	}
+	if resp.GetReceipt() != nil && resp.GetReceipt().GetError() != nil {
+		return nil, connectorError(resp.GetReceipt().GetError())
+	}
+	return &mntxv1.CardTokenPayoutResponse{Payout: payoutFromReceipt(req.GetPayoutId(), resp.GetReceipt())}, nil
 }
 
 func (g *gatewayClient) GetCardPayoutStatus(ctx context.Context, req *mntxv1.GetCardPayoutStatusRequest) (*mntxv1.GetCardPayoutStatusResponse, error) {
 	ctx, cancel := g.callContext(ctx, "GetCardPayoutStatus")
 	defer cancel()
-	return g.client.GetCardPayoutStatus(ctx, req)
+	if req == nil || strings.TrimSpace(req.GetPayoutId()) == "" {
+		return nil, merrors.InvalidArgument("mntx: payout_id is required")
+	}
+	resp, err := g.client.GetOperation(ctx, &connectorv1.GetOperationRequest{OperationId: strings.TrimSpace(req.GetPayoutId())})
+	if err != nil {
+		return nil, err
+	}
+	return &mntxv1.GetCardPayoutStatusResponse{Payout: payoutFromOperation(resp.GetOperation())}, nil
 }
 
 func (g *gatewayClient) ListGatewayInstances(ctx context.Context, req *mntxv1.ListGatewayInstancesRequest) (*mntxv1.ListGatewayInstancesResponse, error) {
-	ctx, cancel := g.callContext(ctx, "ListGatewayInstances")
-	defer cancel()
-	return g.client.ListGatewayInstances(ctx, req)
+	return nil, merrors.NotImplemented("mntx: ListGatewayInstances not supported via connector")
+}
+
+func operationFromCardPayout(req *mntxv1.CardPayoutRequest) (*connectorv1.Operation, error) {
+	if req == nil {
+		return nil, merrors.InvalidArgument("mntx: request is required")
+	}
+	params := payoutParamsFromCard(req)
+	money := moneyFromMinor(req.GetAmountMinor(), req.GetCurrency())
+	return &connectorv1.Operation{
+		Type:           connectorv1.OperationType_PAYOUT,
+		IdempotencyKey: strings.TrimSpace(req.GetPayoutId()),
+		Money:          money,
+		Params:         structFromMap(params),
+	}, nil
+}
+
+func operationFromTokenPayout(req *mntxv1.CardTokenPayoutRequest) (*connectorv1.Operation, error) {
+	if req == nil {
+		return nil, merrors.InvalidArgument("mntx: request is required")
+	}
+	params := payoutParamsFromToken(req)
+	money := moneyFromMinor(req.GetAmountMinor(), req.GetCurrency())
+	return &connectorv1.Operation{
+		Type:           connectorv1.OperationType_PAYOUT,
+		IdempotencyKey: strings.TrimSpace(req.GetPayoutId()),
+		Money:          money,
+		Params:         structFromMap(params),
+	}, nil
+}
+
+func payoutParamsFromCard(req *mntxv1.CardPayoutRequest) map[string]interface{} {
+	params := map[string]interface{}{
+		"payout_id":           strings.TrimSpace(req.GetPayoutId()),
+		"project_id":          req.GetProjectId(),
+		"customer_id":         strings.TrimSpace(req.GetCustomerId()),
+		"customer_first_name": strings.TrimSpace(req.GetCustomerFirstName()),
+		"customer_middle_name": strings.TrimSpace(req.GetCustomerMiddleName()),
+		"customer_last_name":  strings.TrimSpace(req.GetCustomerLastName()),
+		"customer_ip":         strings.TrimSpace(req.GetCustomerIp()),
+		"customer_zip":        strings.TrimSpace(req.GetCustomerZip()),
+		"customer_country":    strings.TrimSpace(req.GetCustomerCountry()),
+		"customer_state":      strings.TrimSpace(req.GetCustomerState()),
+		"customer_city":       strings.TrimSpace(req.GetCustomerCity()),
+		"customer_address":    strings.TrimSpace(req.GetCustomerAddress()),
+		"amount_minor":        req.GetAmountMinor(),
+		"currency":            strings.TrimSpace(req.GetCurrency()),
+		"card_pan":            strings.TrimSpace(req.GetCardPan()),
+		"card_exp_year":        req.GetCardExpYear(),
+		"card_exp_month":       req.GetCardExpMonth(),
+		"card_holder":         strings.TrimSpace(req.GetCardHolder()),
+	}
+	if len(req.GetMetadata()) > 0 {
+		params["metadata"] = mapStringToInterface(req.GetMetadata())
+	}
+	return params
+}
+
+func payoutParamsFromToken(req *mntxv1.CardTokenPayoutRequest) map[string]interface{} {
+	params := map[string]interface{}{
+		"payout_id":           strings.TrimSpace(req.GetPayoutId()),
+		"project_id":          req.GetProjectId(),
+		"customer_id":         strings.TrimSpace(req.GetCustomerId()),
+		"customer_first_name": strings.TrimSpace(req.GetCustomerFirstName()),
+		"customer_middle_name": strings.TrimSpace(req.GetCustomerMiddleName()),
+		"customer_last_name":  strings.TrimSpace(req.GetCustomerLastName()),
+		"customer_ip":         strings.TrimSpace(req.GetCustomerIp()),
+		"customer_zip":        strings.TrimSpace(req.GetCustomerZip()),
+		"customer_country":    strings.TrimSpace(req.GetCustomerCountry()),
+		"customer_state":      strings.TrimSpace(req.GetCustomerState()),
+		"customer_city":       strings.TrimSpace(req.GetCustomerCity()),
+		"customer_address":    strings.TrimSpace(req.GetCustomerAddress()),
+		"amount_minor":        req.GetAmountMinor(),
+		"currency":            strings.TrimSpace(req.GetCurrency()),
+		"card_token":          strings.TrimSpace(req.GetCardToken()),
+		"card_holder":         strings.TrimSpace(req.GetCardHolder()),
+		"masked_pan":          strings.TrimSpace(req.GetMaskedPan()),
+	}
+	if len(req.GetMetadata()) > 0 {
+		params["metadata"] = mapStringToInterface(req.GetMetadata())
+	}
+	return params
+}
+
+func moneyFromMinor(amount int64, currency string) *moneyv1.Money {
+	if amount <= 0 {
+		return nil
+	}
+	dec := decimal.NewFromInt(amount).Div(decimal.NewFromInt(100))
+	return &moneyv1.Money{
+		Amount:   dec.StringFixed(2),
+		Currency: strings.ToUpper(strings.TrimSpace(currency)),
+	}
+}
+
+func payoutFromReceipt(payoutID string, receipt *connectorv1.OperationReceipt) *mntxv1.CardPayoutState {
+	state := &mntxv1.CardPayoutState{PayoutId: strings.TrimSpace(payoutID)}
+	if receipt == nil {
+		return state
+	}
+	state.Status = payoutStatusFromOperation(receipt.GetStatus())
+	state.ProviderPaymentId = strings.TrimSpace(receipt.GetProviderRef())
+	return state
+}
+
+func payoutFromOperation(op *connectorv1.Operation) *mntxv1.CardPayoutState {
+	if op == nil {
+		return nil
+	}
+	state := &mntxv1.CardPayoutState{
+		PayoutId:          strings.TrimSpace(op.GetOperationId()),
+		Status:            payoutStatusFromOperation(op.GetStatus()),
+		ProviderPaymentId: strings.TrimSpace(op.GetProviderRef()),
+	}
+	if money := op.GetMoney(); money != nil {
+		state.Currency = strings.TrimSpace(money.GetCurrency())
+		state.AmountMinor = minorFromMoney(money)
+	}
+	return state
+}
+
+func minorFromMoney(m *moneyv1.Money) int64 {
+	if m == nil {
+		return 0
+	}
+	amount := strings.TrimSpace(m.GetAmount())
+	if amount == "" {
+		return 0
+	}
+	dec, err := decimal.NewFromString(amount)
+	if err != nil {
+		return 0
+	}
+	return dec.Mul(decimal.NewFromInt(100)).IntPart()
+}
+
+func payoutStatusFromOperation(status connectorv1.OperationStatus) mntxv1.PayoutStatus {
+	switch status {
+	case connectorv1.OperationStatus_CONFIRMED:
+		return mntxv1.PayoutStatus_PAYOUT_STATUS_PROCESSED
+	case connectorv1.OperationStatus_FAILED:
+		return mntxv1.PayoutStatus_PAYOUT_STATUS_FAILED
+	case connectorv1.OperationStatus_PENDING, connectorv1.OperationStatus_SUBMITTED:
+		return mntxv1.PayoutStatus_PAYOUT_STATUS_PENDING
+	default:
+		return mntxv1.PayoutStatus_PAYOUT_STATUS_UNSPECIFIED
+	}
+}
+
+func connectorError(err *connectorv1.ConnectorError) error {
+	if err == nil {
+		return nil
+	}
+	msg := strings.TrimSpace(err.GetMessage())
+	switch err.GetCode() {
+	case connectorv1.ErrorCode_INVALID_PARAMS:
+		return merrors.InvalidArgument(msg)
+	case connectorv1.ErrorCode_NOT_FOUND:
+		return merrors.NoData(msg)
+	case connectorv1.ErrorCode_UNSUPPORTED_OPERATION, connectorv1.ErrorCode_UNSUPPORTED_ACCOUNT_KIND:
+		return merrors.NotImplemented(msg)
+	case connectorv1.ErrorCode_RATE_LIMITED, connectorv1.ErrorCode_TEMPORARY_UNAVAILABLE:
+		return merrors.Internal(msg)
+	default:
+		return merrors.Internal(msg)
+	}
+}
+
+func structFromMap(data map[string]interface{}) *structpb.Struct {
+	if len(data) == 0 {
+		return nil
+	}
+	result, err := structpb.NewStruct(data)
+	if err != nil {
+		return nil
+	}
+	return result
+}
+
+func mapStringToInterface(input map[string]string) map[string]interface{} {
+	if len(input) == 0 {
+		return nil
+	}
+	out := make(map[string]interface{}, len(input))
+	for k, v := range input {
+		out[k] = v
+	}
+	return out
 }