+source currency pick fix +fx side propagation

api/server/internal/server/paymentapiimp/mapper.go

@@ -8,6 +8,7 @@ import (
 	pkgmodel "github.com/tech/sendico/pkg/model"
 	payecon "github.com/tech/sendico/pkg/payments/economics"
 	paymenttypes "github.com/tech/sendico/pkg/payments/types"
+	fxv1 "github.com/tech/sendico/pkg/proto/common/fx/v1"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"
 	paymentv1 "github.com/tech/sendico/pkg/proto/common/payment/v1"
 	chainv1 "github.com/tech/sendico/pkg/proto/gateway/chain/v1"
@@ -58,6 +59,7 @@ func mapQuoteIntent(intent *srequest.PaymentIntent) (*quotationv2.QuoteIntent, e
 		SettlementMode:     resolvedSettlementMode,
 		FeeTreatment:       resolvedFeeTreatment,
 		SettlementCurrency: settlementCurrency,
+		FxSide:             mapFXSide(intent),
 	}
 	if comment := strings.TrimSpace(intent.Attributes["comment"]); comment != "" {
 		quoteIntent.Comment = comment
@@ -65,6 +67,20 @@ func mapQuoteIntent(intent *srequest.PaymentIntent) (*quotationv2.QuoteIntent, e
 	return quoteIntent, nil
 }
 
+func mapFXSide(intent *srequest.PaymentIntent) fxv1.Side {
+	if intent == nil || intent.FX == nil {
+		return fxv1.Side_SIDE_UNSPECIFIED
+	}
+	switch strings.TrimSpace(string(intent.FX.Side)) {
+	case string(srequest.FXSideBuyBaseSellQuote):
+		return fxv1.Side_BUY_BASE_SELL_QUOTE
+	case string(srequest.FXSideSellBaseBuyQuote):
+		return fxv1.Side_SELL_BASE_BUY_QUOTE
+	default:
+		return fxv1.Side_SIDE_UNSPECIFIED
+	}
+}
+
 func validatePaymentKind(kind srequest.PaymentKind) error {
 	switch strings.TrimSpace(string(kind)) {
 	case string(srequest.PaymentKindPayout), string(srequest.PaymentKindInternalTransfer), string(srequest.PaymentKindFxConversion):

api/server/internal/server/paymentapiimp/mapper_fee_treatment_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	paymenttypes "github.com/tech/sendico/pkg/payments/types"
+	fxv1 "github.com/tech/sendico/pkg/proto/common/fx/v1"
 	paymentv1 "github.com/tech/sendico/pkg/proto/common/payment/v1"
 	quotationv2 "github.com/tech/sendico/pkg/proto/payments/quotation/v2"
 	"github.com/tech/sendico/server/interface/api/srequest"
@@ -201,4 +202,54 @@ func TestMapQuoteIntent_DerivesSettlementCurrencyFromFX(t *testing.T) {
 	if got.GetSettlementCurrency() != "RUB" {
 		t.Fatalf("unexpected settlement currency: got=%q", got.GetSettlementCurrency())
 	}
+	if got.GetFxSide() != fxv1.Side_SELL_BASE_BUY_QUOTE {
+		t.Fatalf("unexpected fx_side: got=%s", got.GetFxSide().String())
+	}
+}
+
+func TestMapQuoteIntent_PropagatesFXSideBuyBaseSellQuote(t *testing.T) {
+	source, err := srequest.NewManagedWalletEndpointDTO(srequest.ManagedWalletEndpoint{
+		ManagedWalletRef: "wallet-source-1",
+	}, nil)
+	if err != nil {
+		t.Fatalf("failed to build source endpoint: %v", err)
+	}
+
+	destination, err := srequest.NewCardEndpointDTO(srequest.CardEndpoint{
+		Pan:       "2200700142860161",
+		FirstName: "John",
+		LastName:  "Doe",
+		ExpMonth:  3,
+		ExpYear:   2030,
+	}, nil)
+	if err != nil {
+		t.Fatalf("failed to build destination endpoint: %v", err)
+	}
+
+	intent := &srequest.PaymentIntent{
+		Kind:           srequest.PaymentKindPayout,
+		Source:         &source,
+		Destination:    &destination,
+		Amount:         &paymenttypes.Money{Amount: "10", Currency: "USDT"},
+		SettlementMode: srequest.SettlementModeFixSource,
+		FeeTreatment:   srequest.FeeTreatmentAddToSource,
+		FX: &srequest.FXIntent{
+			Pair: &srequest.CurrencyPair{
+				Base:  "RUB",
+				Quote: "USDT",
+			},
+			Side: srequest.FXSideBuyBaseSellQuote,
+		},
+	}
+
+	got, err := mapQuoteIntent(intent)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got.GetFxSide() != fxv1.Side_BUY_BASE_SELL_QUOTE {
+		t.Fatalf("unexpected fx_side: got=%s", got.GetFxSide().String())
+	}
+	if got.GetSettlementCurrency() != "RUB" {
+		t.Fatalf("unexpected settlement currency: got=%q", got.GetSettlementCurrency())
+	}
 }