Merge pull request 'ledger account reference removed' (#87) from fees-86 into main

Reviewed-on: #87

api/billing/fees/internal/service/fees/internal/calculator/impl.go

@@ -90,10 +90,6 @@ func (c *quoteCalculator) Compute(ctx context.Context, plan *model.FeePlan, inte
 		}
 
 		ledgerAccountRef := strings.TrimSpace(rule.LedgerAccountRef)
-		if ledgerAccountRef == "" {
-			c.logger.Warn("fee rule missing ledger account reference", zap.String("rule_id", rule.RuleID))
-			continue
-		}
 
 		amount, scale, calcErr := c.calculateRuleAmount(baseAmount, baseScale, rule)
 		if calcErr != nil {

api/billing/fees/internal/service/fees/internal/resolver/impl.go

@@ -38,23 +38,23 @@ func New(plans storage.PlansStore, logger *zap.Logger) *feeResolver {
 	}
 }
 
-func (r *feeResolver) ResolveFeeRule(ctx context.Context, orgID *primitive.ObjectID, trigger model.Trigger, at time.Time, attrs map[string]string) (*model.FeePlan, *model.FeeRule, error) {
+func (r *feeResolver) ResolveFeeRule(ctx context.Context, orgRef *primitive.ObjectID, trigger model.Trigger, at time.Time, attrs map[string]string) (*model.FeePlan, *model.FeeRule, error) {
 	if r.plans == nil {
 		return nil, nil, merrors.InvalidArgument("fees: plans store is required")
 	}
 
 	// Try org-specific first if provided.
-	if orgID != nil && !orgID.IsZero() {
-		if plan, err := r.getOrgPlan(ctx, *orgID, at); err == nil {
+	if orgRef != nil && !orgRef.IsZero() {
+		if plan, err := r.getOrgPlan(ctx, *orgRef, at); err == nil {
 			if rule, selErr := selectRule(plan, trigger, at, attrs); selErr == nil {
 				return plan, rule, nil
 			} else if !errors.Is(selErr, ErrNoFeeRuleFound) {
-				r.logger.Warn("failed selecting rule for org plan", zap.Error(selErr), zap.String("org_ref", orgID.Hex()))
+				r.logger.Warn("failed selecting rule for org plan", zap.Error(selErr), zap.String("org_ref", orgRef.Hex()))
 				return nil, nil, selErr
 			}
-			r.logger.Debug("no matching rule in org plan; falling back to global", zap.String("org_ref", orgID.Hex()))
+			r.logger.Debug("no matching rule in org plan; falling back to global", zap.String("org_ref", orgRef.Hex()))
 		} else if !errors.Is(err, storage.ErrFeePlanNotFound) {
-			r.logger.Warn("failed resolving org fee plan", zap.Error(err), zap.String("org_ref", orgID.Hex()))
+			r.logger.Warn("failed resolving org fee plan", zap.Error(err), zap.String("org_ref", orgRef.Hex()))
 			return nil, nil, err
 		}
 	}

api/billing/fees/internal/service/fees/internal/resolver/resolver_test.go

@@ -32,8 +32,8 @@ func TestResolver_GlobalFallbackWhenOrgMissing(t *testing.T) {
 	if err != nil {
 		t.Fatalf("expected fallback to global, got error: %v", err)
 	}
-	if !plan.GetOrganizationRef().IsZero() {
-		t.Fatalf("expected global plan, got orgRef %s", plan.GetOrganizationRef().Hex())
+	if plan.OrganizationRef != nil && !plan.OrganizationRef.IsZero() {
+		t.Fatalf("expected global plan, got orgRef %s", plan.OrganizationRef.Hex())
 	}
 	if rule.RuleID != "global_capture" {
 		t.Fatalf("unexpected rule selected: %s", rule.RuleID)
@@ -59,8 +59,7 @@ func TestResolver_OrgOverridesGlobal(t *testing.T) {
 			{RuleID: "org_capture", Trigger: model.TriggerCapture, Priority: 10, Percentage: "0.03", EffectiveFrom: now.Add(-time.Hour)},
 		},
 	}
-	orgPlan.SetOrganizationRef(org)
-
+	orgPlan.OrganizationRef = &org
 	store := &memoryPlansStore{plans: []*model.FeePlan{globalPlan, orgPlan}}
 	resolver := New(store, zap.NewNop())
 
@@ -95,7 +94,7 @@ func TestResolver_SelectsHighestPriority(t *testing.T) {
 			{RuleID: "high", Trigger: model.TriggerCapture, Priority: 200, Percentage: "0.03", EffectiveFrom: now.Add(-time.Hour)},
 		},
 	}
-	plan.SetOrganizationRef(org)
+	plan.OrganizationRef = &org
 
 	store := &memoryPlansStore{plans: []*model.FeePlan{plan}}
 	resolver := New(store, zap.NewNop())
@@ -136,7 +135,7 @@ func TestResolver_EffectiveDateFiltering(t *testing.T) {
 			{RuleID: "expired", Trigger: model.TriggerCapture, Priority: 100, Percentage: "0.05", EffectiveFrom: past, EffectiveTo: &past},
 		},
 	}
-	orgPlan.SetOrganizationRef(org)
+	orgPlan.OrganizationRef = &org
 
 	globalPlan := &model.FeePlan{
 		Active:        true,
@@ -221,7 +220,7 @@ func TestResolver_MultipleActivePlansConflict(t *testing.T) {
 			{RuleID: "r1", Trigger: model.TriggerCapture, Priority: 10, Percentage: "0.05", EffectiveFrom: now.Add(-time.Hour)},
 		},
 	}
-	p1.SetOrganizationRef(org)
+	p1.OrganizationRef = &org
 	p2 := &model.FeePlan{
 		Active:        true,
 		EffectiveFrom: now.Add(-30 * time.Minute),
@@ -229,7 +228,7 @@ func TestResolver_MultipleActivePlansConflict(t *testing.T) {
 			{RuleID: "r2", Trigger: model.TriggerCapture, Priority: 20, Percentage: "0.03", EffectiveFrom: now.Add(-time.Hour)},
 		},
 	}
-	p2.SetOrganizationRef(org)
+	p2.OrganizationRef = &org
 
 	store := &memoryPlansStore{plans: []*model.FeePlan{p1, p2}}
 	resolver := New(store, zap.NewNop())
@@ -263,7 +262,7 @@ func (m *memoryPlansStore) GetActivePlan(ctx context.Context, orgRef primitive.O
 func (m *memoryPlansStore) FindActiveOrgPlan(_ context.Context, orgRef primitive.ObjectID, at time.Time) (*model.FeePlan, error) {
 	var matches []*model.FeePlan
 	for _, plan := range m.plans {
-		if plan == nil || plan.GetOrganizationRef() != orgRef {
+		if plan == nil || plan.OrganizationRef == nil || plan.OrganizationRef.IsZero() || (*plan.OrganizationRef != orgRef) {
 			continue
 		}
 		if !plan.Active {
@@ -289,7 +288,7 @@ func (m *memoryPlansStore) FindActiveOrgPlan(_ context.Context, orgRef primitive
 func (m *memoryPlansStore) FindActiveGlobalPlan(_ context.Context, at time.Time) (*model.FeePlan, error) {
 	var matches []*model.FeePlan
 	for _, plan := range m.plans {
-		if plan == nil || !plan.GetOrganizationRef().IsZero() {
+		if plan == nil || ((plan.OrganizationRef != nil) && !plan.OrganizationRef.IsZero()) {
 			continue
 		}
 		if !plan.Active {

api/billing/fees/internal/service/fees/logging.go

@@ -0,0 +1,88 @@
+package fees
+
+import (
+	"strings"
+	"time"
+
+	feesv1 "github.com/tech/sendico/pkg/proto/billing/fees/v1"
+	tracev1 "github.com/tech/sendico/pkg/proto/common/trace/v1"
+	"go.uber.org/zap"
+)
+
+func requestLogFields(meta *feesv1.RequestMeta, intent *feesv1.Intent) []zap.Field {
+	fields := logFieldsFromRequestMeta(meta)
+	fields = append(fields, logFieldsFromIntent(intent)...)
+	return fields
+}
+
+func logFieldsFromRequestMeta(meta *feesv1.RequestMeta) []zap.Field {
+	if meta == nil {
+		return nil
+	}
+	fields := make([]zap.Field, 0, 4)
+	if org := strings.TrimSpace(meta.GetOrganizationRef()); org != "" {
+		fields = append(fields, zap.String("organization_ref", org))
+	}
+	fields = append(fields, logFieldsFromTrace(meta.GetTrace())...)
+	return fields
+}
+
+func logFieldsFromIntent(intent *feesv1.Intent) []zap.Field {
+	if intent == nil {
+		return nil
+	}
+	fields := make([]zap.Field, 0, 5)
+	if trigger := intent.GetTrigger(); trigger != feesv1.Trigger_TRIGGER_UNSPECIFIED {
+		fields = append(fields, zap.String("trigger", trigger.String()))
+	}
+	if base := intent.GetBaseAmount(); base != nil {
+		if amount := strings.TrimSpace(base.GetAmount()); amount != "" {
+			fields = append(fields, zap.String("base_amount", amount))
+		}
+		if currency := strings.TrimSpace(base.GetCurrency()); currency != "" {
+			fields = append(fields, zap.String("base_currency", currency))
+		}
+	}
+	if booked := intent.GetBookedAt(); booked != nil && booked.IsValid() {
+		fields = append(fields, zap.Time("booked_at", booked.AsTime()))
+	}
+	if attrs := intent.GetAttributes(); len(attrs) > 0 {
+		fields = append(fields, zap.Int("attributes_count", len(attrs)))
+	}
+	return fields
+}
+
+func logFieldsFromTrace(trace *tracev1.TraceContext) []zap.Field {
+	if trace == nil {
+		return nil
+	}
+	fields := make([]zap.Field, 0, 3)
+	if reqRef := strings.TrimSpace(trace.GetRequestRef()); reqRef != "" {
+		fields = append(fields, zap.String("request_ref", reqRef))
+	}
+	if idem := strings.TrimSpace(trace.GetIdempotencyKey()); idem != "" {
+		fields = append(fields, zap.String("idempotency_key", idem))
+	}
+	if traceRef := strings.TrimSpace(trace.GetTraceRef()); traceRef != "" {
+		fields = append(fields, zap.String("trace_ref", traceRef))
+	}
+	return fields
+}
+
+func logFieldsFromTokenPayload(payload *feeQuoteTokenPayload) []zap.Field {
+	if payload == nil {
+		return nil
+	}
+	fields := make([]zap.Field, 0, 6)
+	if org := strings.TrimSpace(payload.OrganizationRef); org != "" {
+		fields = append(fields, zap.String("organization_ref", org))
+	}
+	if payload.ExpiresAtUnixMs > 0 {
+		fields = append(fields,
+			zap.Int64("expires_at_unix_ms", payload.ExpiresAtUnixMs),
+			zap.Time("expires_at", time.UnixMilli(payload.ExpiresAtUnixMs)))
+	}
+	fields = append(fields, logFieldsFromIntent(payload.Intent)...)
+	fields = append(fields, logFieldsFromTrace(payload.Trace)...)
+	return fields
+}

api/billing/fees/internal/service/fees/service.go

@@ -72,26 +72,57 @@ func (s *Service) Register(router routers.GRPC) error {
 }
 
 func (s *Service) QuoteFees(ctx context.Context, req *feesv1.QuoteFeesRequest) (resp *feesv1.QuoteFeesResponse, err error) {
+	var (
+		meta   *feesv1.RequestMeta
+		intent *feesv1.Intent
+	)
+	if req != nil {
+		meta = req.GetMeta()
+		intent = req.GetIntent()
+	}
+	logger := s.logger.With(requestLogFields(meta, intent)...)
+
 	start := s.clock.Now()
 	trigger := feesv1.Trigger_TRIGGER_UNSPECIFIED
-	if req != nil && req.GetIntent() != nil {
-		trigger = req.GetIntent().GetTrigger()
+	if intent != nil {
+		trigger = intent.GetTrigger()
 	}
 	var fxUsed bool
 	defer func() {
 		statusLabel := statusFromError(err)
+		linesCount := 0
+		appliedCount := 0
 		if err == nil && resp != nil {
 			fxUsed = resp.GetFxUsed() != nil
+			linesCount = len(resp.GetLines())
+			appliedCount = len(resp.GetApplied())
 		}
 		observeMetrics("quote", trigger, statusLabel, fxUsed, time.Since(start))
+
+		logFields := []zap.Field{
+			zap.String("status", statusLabel),
+			zap.Duration("duration", time.Since(start)),
+			zap.Bool("fx_used", fxUsed),
+			zap.String("trigger", trigger.String()),
+			zap.Int("lines", linesCount),
+			zap.Int("applied_rules", appliedCount),
+		}
+		if err != nil {
+			logger.Warn("QuoteFees finished", append(logFields, zap.Error(err))...)
+			return
+		}
+		logger.Info("QuoteFees finished", logFields...)
 	}()
 
+	logger.Debug("QuoteFees request received")
+
 	if err = s.validateQuoteRequest(req); err != nil {
 		return nil, err
 	}
 
 	orgRef, parseErr := primitive.ObjectIDFromHex(req.GetMeta().GetOrganizationRef())
 	if parseErr != nil {
+		logger.Warn("QuoteFees invalid organization_ref", zap.Error(parseErr))
 		err = status.Error(codes.InvalidArgument, "invalid organization_ref")
 		return nil, err
 	}
@@ -112,20 +143,59 @@ func (s *Service) QuoteFees(ctx context.Context, req *feesv1.QuoteFeesRequest) (
 }
 
 func (s *Service) PrecomputeFees(ctx context.Context, req *feesv1.PrecomputeFeesRequest) (resp *feesv1.PrecomputeFeesResponse, err error) {
+	var (
+		meta   *feesv1.RequestMeta
+		intent *feesv1.Intent
+	)
+	if req != nil {
+		meta = req.GetMeta()
+		intent = req.GetIntent()
+	}
+	logger := s.logger.With(requestLogFields(meta, intent)...)
+
 	start := s.clock.Now()
 	trigger := feesv1.Trigger_TRIGGER_UNSPECIFIED
-	if req != nil && req.GetIntent() != nil {
-		trigger = req.GetIntent().GetTrigger()
+	if intent != nil {
+		trigger = intent.GetTrigger()
 	}
-	var fxUsed bool
+	var (
+		fxUsed    bool
+		expiresAt time.Time
+	)
 	defer func() {
 		statusLabel := statusFromError(err)
+		linesCount := 0
+		appliedCount := 0
 		if err == nil && resp != nil {
 			fxUsed = resp.GetFxUsed() != nil
+			linesCount = len(resp.GetLines())
+			appliedCount = len(resp.GetApplied())
+			if ts := resp.GetExpiresAt(); ts != nil {
+				expiresAt = ts.AsTime()
+			}
 		}
 		observeMetrics("precompute", trigger, statusLabel, fxUsed, time.Since(start))
+
+		logFields := []zap.Field{
+			zap.String("status", statusLabel),
+			zap.Duration("duration", time.Since(start)),
+			zap.Bool("fx_used", fxUsed),
+			zap.String("trigger", trigger.String()),
+			zap.Int("lines", linesCount),
+			zap.Int("applied_rules", appliedCount),
+		}
+		if !expiresAt.IsZero() {
+			logFields = append(logFields, zap.Time("expires_at", expiresAt))
+		}
+		if err != nil {
+			logger.Warn("PrecomputeFees finished", append(logFields, zap.Error(err))...)
+			return
+		}
+		logger.Info("PrecomputeFees finished", logFields...)
 	}()
 
+	logger.Debug("PrecomputeFees request received")
+
 	if err = s.validatePrecomputeRequest(req); err != nil {
 		return nil, err
 	}
@@ -134,6 +204,7 @@ func (s *Service) PrecomputeFees(ctx context.Context, req *feesv1.PrecomputeFees
 
 	orgRef, parseErr := primitive.ObjectIDFromHex(req.GetMeta().GetOrganizationRef())
 	if parseErr != nil {
+		logger.Warn("PrecomputeFees invalid organization_ref", zap.Error(parseErr))
 		err = status.Error(codes.InvalidArgument, "invalid organization_ref")
 		return nil, err
 	}
@@ -148,7 +219,7 @@ func (s *Service) PrecomputeFees(ctx context.Context, req *feesv1.PrecomputeFees
 	if ttl <= 0 {
 		ttl = 60000
 	}
-	expiresAt := now.Add(time.Duration(ttl) * time.Millisecond)
+	expiresAt = now.Add(time.Duration(ttl) * time.Millisecond)
 
 	payload := feeQuoteTokenPayload{
 		OrganizationRef: req.GetMeta().GetOrganizationRef(),
@@ -159,7 +230,7 @@ func (s *Service) PrecomputeFees(ctx context.Context, req *feesv1.PrecomputeFees
 
 	var token string
 	if token, err = encodeTokenPayload(payload); err != nil {
-		s.logger.Warn("failed to encode fee quote token", zap.Error(err))
+		logger.Warn("failed to encode fee quote token", zap.Error(err))
 		err = status.Error(codes.Internal, "failed to encode fee quote token")
 		return nil, err
 	}
@@ -176,9 +247,18 @@ func (s *Service) PrecomputeFees(ctx context.Context, req *feesv1.PrecomputeFees
 }
 
 func (s *Service) ValidateFeeToken(ctx context.Context, req *feesv1.ValidateFeeTokenRequest) (resp *feesv1.ValidateFeeTokenResponse, err error) {
+	tokenLen := 0
+	if req != nil {
+		tokenLen = len(strings.TrimSpace(req.GetFeeQuoteToken()))
+	}
+	logger := s.logger.With(zap.Int("token_length", tokenLen))
+
 	start := s.clock.Now()
 	trigger := feesv1.Trigger_TRIGGER_UNSPECIFIED
-	var fxUsed bool
+	var (
+		fxUsed       bool
+		resultReason string
+	)
 	defer func() {
 		statusLabel := statusFromError(err)
 		if err == nil && resp != nil {
@@ -191,9 +271,28 @@ func (s *Service) ValidateFeeToken(ctx context.Context, req *feesv1.ValidateFeeT
 			}
 		}
 		observeMetrics("validate", trigger, statusLabel, fxUsed, time.Since(start))
+
+		logFields := []zap.Field{
+			zap.String("status", statusLabel),
+			zap.Duration("duration", time.Since(start)),
+			zap.Bool("fx_used", fxUsed),
+			zap.String("trigger", trigger.String()),
+			zap.Bool("valid", resp != nil && resp.GetValid()),
+		}
+		if resultReason != "" {
+			logFields = append(logFields, zap.String("reason", resultReason))
+		}
+		if err != nil {
+			logger.Warn("ValidateFeeToken finished", append(logFields, zap.Error(err))...)
+			return
+		}
+		logger.Info("ValidateFeeToken finished", logFields...)
 	}()
 
+	logger.Debug("ValidateFeeToken request received")
+
 	if req == nil || strings.TrimSpace(req.GetFeeQuoteToken()) == "" {
+		resultReason = "missing_token"
 		err = status.Error(codes.InvalidArgument, "fee_quote_token is required")
 		return nil, err
 	}
@@ -202,21 +301,29 @@ func (s *Service) ValidateFeeToken(ctx context.Context, req *feesv1.ValidateFeeT
 
 	payload, decodeErr := decodeTokenPayload(req.GetFeeQuoteToken())
 	if decodeErr != nil {
-		s.logger.Warn("failed to decode fee quote token", zap.Error(decodeErr))
+		resultReason = "invalid_token"
+		logger.Warn("failed to decode fee quote token", zap.Error(decodeErr))
 		resp = &feesv1.ValidateFeeTokenResponse{Meta: &feesv1.ResponseMeta{}, Valid: false, Reason: "invalid_token"}
 		return resp, nil
 	}
 
+	logger = logger.With(logFieldsFromTokenPayload(&payload)...)
+
+	if payload.Intent != nil {
 		trigger = payload.Intent.GetTrigger()
+	}
 
 	if now.UnixMilli() > payload.ExpiresAtUnixMs {
+		resultReason = "expired"
+		logger.Info("fee quote token expired")
 		resp = &feesv1.ValidateFeeTokenResponse{Meta: &feesv1.ResponseMeta{}, Valid: false, Reason: "expired"}
 		return resp, nil
 	}
 
 	orgRef, parseErr := primitive.ObjectIDFromHex(payload.OrganizationRef)
 	if parseErr != nil {
-		s.logger.Warn("token contained invalid organization reference", zap.Error(parseErr))
+		resultReason = "invalid_token"
+		logger.Warn("token contained invalid organization reference", zap.Error(parseErr))
 		resp = &feesv1.ValidateFeeTokenResponse{Meta: &feesv1.ResponseMeta{}, Valid: false, Reason: "invalid_token"}
 		return resp, nil
 	}
@@ -280,6 +387,16 @@ func (s *Service) computeQuoteWithTime(ctx context.Context, orgRef primitive.Obj
 		bookedAt = intent.GetBookedAt().AsTime()
 	}
 
+	logFields := []zap.Field{
+		zap.Time("booked_at_used", bookedAt),
+	}
+	if !orgRef.IsZero() {
+		logFields = append(logFields, zap.String("organization_ref", orgRef.Hex()))
+	}
+	logFields = append(logFields, logFieldsFromIntent(intent)...)
+	logFields = append(logFields, logFieldsFromTrace(trace)...)
+	logger := s.logger.With(logFields...)
+
 	var orgPtr *primitive.ObjectID
 	if !orgRef.IsZero() {
 		orgPtr = &orgRef
@@ -297,7 +414,7 @@ func (s *Service) computeQuoteWithTime(ctx context.Context, orgRef primitive.Obj
 		case errors.Is(err, storage.ErrFeePlanNotFound):
 			return nil, nil, nil, status.Error(codes.NotFound, "fee plan not found")
 		default:
-			s.logger.Warn("failed to resolve fee rule", zap.Error(err))
+			logger.Warn("failed to resolve fee rule", zap.Error(err))
 			return nil, nil, nil, status.Error(codes.Internal, "failed to resolve fee rule")
 		}
 	}
@@ -313,7 +430,7 @@ func (s *Service) computeQuoteWithTime(ctx context.Context, orgRef primitive.Obj
 		if errors.Is(calcErr, merrors.ErrInvalidArg) {
 			return nil, nil, nil, status.Error(codes.InvalidArgument, calcErr.Error())
 		}
-		s.logger.Warn("failed to compute fee quote", zap.Error(calcErr))
+		logger.Warn("failed to compute fee quote", zap.Error(calcErr))
 		return nil, nil, nil, status.Error(codes.Internal, "failed to compute fee quote")
 	}
 

api/billing/fees/internal/service/fees/service_test.go

@@ -49,7 +49,7 @@ func TestQuoteFees_ComputesDerivedLines(t *testing.T) {
 		},
 	}
 	plan.SetID(primitive.NewObjectID())
-	plan.SetOrganizationRef(orgRef)
+	plan.OrganizationRef = &orgRef
 
 	service := NewService(
 		zap.NewNop(),
@@ -163,7 +163,7 @@ func TestQuoteFees_FiltersByAttributesAndDates(t *testing.T) {
 		},
 	}
 	plan.SetID(primitive.NewObjectID())
-	plan.SetOrganizationRef(orgRef)
+	plan.OrganizationRef = &orgRef
 
 	service := NewService(
 		zap.NewNop(),
@@ -224,7 +224,7 @@ func TestQuoteFees_RoundingDown(t *testing.T) {
 		},
 	}
 	plan.SetID(primitive.NewObjectID())
-	plan.SetOrganizationRef(orgRef)
+	plan.OrganizationRef = &orgRef
 
 	service := NewService(
 		zap.NewNop(),
@@ -277,7 +277,7 @@ func TestQuoteFees_UsesInjectedCalculator(t *testing.T) {
 		},
 	}
 	plan.SetID(primitive.NewObjectID())
-	plan.SetOrganizationRef(orgRef)
+	plan.OrganizationRef = &orgRef
 
 	result := &types.CalculationResult{
 		Lines: []*feesv1.DerivedPostingLine{
@@ -353,7 +353,7 @@ func TestQuoteFees_PopulatesFxUsed(t *testing.T) {
 		},
 	}
 	plan.SetID(primitive.NewObjectID())
-	plan.SetOrganizationRef(orgRef)
+	plan.OrganizationRef = &orgRef
 
 	fakeOracle := &oracleclient.Fake{
 		LatestRateFn: func(ctx context.Context, req oracleclient.LatestRateParams) (*oracleclient.RateSnapshot, error) {
@@ -452,7 +452,7 @@ func (s *stubPlansStore) FindActiveOrgPlan(_ context.Context, orgRef primitive.O
 	if s.plan == nil {
 		return nil, storage.ErrFeePlanNotFound
 	}
-	if s.plan.GetOrganizationRef() != orgRef {
+	if (s.plan.OrganizationRef != nil) && (*s.plan.OrganizationRef != orgRef) {
 		return nil, storage.ErrFeePlanNotFound
 	}
 	if !s.plan.Active {

api/billing/fees/storage/model/plan.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/tech/sendico/pkg/db/storable"
 	"github.com/tech/sendico/pkg/model"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 )
 
 const (
@@ -26,8 +27,8 @@ const (
 // FeePlan describes a collection of fee rules for an organisation.
 type FeePlan struct {
 	storable.Base     `bson:",inline" json:",inline"`
-	model.OrganizationBoundBase `bson:",inline" json:",inline"`
 	model.Describable `bson:",inline" json:",inline"`
+	OrganizationRef   *primitive.ObjectID `bson:"organizationRef,omitempty" json:"organizationRef,omitempty"`
 	Active            bool                `bson:"active"             json:"active"`
 	EffectiveFrom     time.Time           `bson:"effectiveFrom"      json:"effectiveFrom"`
 	EffectiveTo       *time.Time          `bson:"effectiveTo,omitempty" json:"effectiveTo,omitempty"`

api/payments/orchestrator/config.yml

@@ -61,3 +61,6 @@ card_gateways:
   monetix:
     funding_address: "wallet_funding_monetix"
     fee_address: "wallet_fee_monetix"
+
+fee_ledger_accounts:
+  monetix: "ledger:fees:monetix"

api/payments/orchestrator/internal/server/internal/serverimp.go

@@ -46,6 +46,7 @@ type config struct {
 	Gateway         clientConfig                      `yaml:"gateway"`
 	Oracle          clientConfig                      `yaml:"oracle"`
 	CardGateways    map[string]cardGatewayRouteConfig `yaml:"card_gateways"`
+	FeeAccounts     map[string]string                 `yaml:"fee_ledger_accounts"`
 }
 
 type clientConfig struct {
@@ -159,6 +160,9 @@ func (i *Imp) Start() error {
 		if routes := buildCardGatewayRoutes(cfg.CardGateways); len(routes) > 0 {
 			opts = append(opts, orchestrator.WithCardGatewayRoutes(routes))
 		}
+		if feeAccounts := buildFeeLedgerAccounts(cfg.FeeAccounts); len(feeAccounts) > 0 {
+			opts = append(opts, orchestrator.WithFeeLedgerAccounts(feeAccounts))
+		}
 		return orchestrator.NewService(logger, repo, opts...), nil
 	}
 
@@ -323,3 +327,19 @@ func buildCardGatewayRoutes(src map[string]cardGatewayRouteConfig) map[string]or
 	}
 	return result
 }
+
+func buildFeeLedgerAccounts(src map[string]string) map[string]string {
+	if len(src) == 0 {
+		return nil
+	}
+	result := make(map[string]string, len(src))
+	for key, account := range src {
+		k := strings.ToLower(strings.TrimSpace(key))
+		v := strings.TrimSpace(account)
+		if k == "" || v == "" {
+			continue
+		}
+		result[k] = v
+	}
+	return result
+}

api/payments/orchestrator/internal/service/orchestrator/helpers.go

@@ -383,6 +383,22 @@ func feeBreakdownFromQuote(quote *orchestratorv1.PaymentQuote) []*chainv1.Servic
 	return breakdown
 }
 
+func assignLedgerAccounts(lines []*feesv1.DerivedPostingLine, account string) []*feesv1.DerivedPostingLine {
+	if account == "" || len(lines) == 0 {
+		return lines
+	}
+	for _, line := range lines {
+		if line == nil {
+			continue
+		}
+		if strings.TrimSpace(line.GetLedgerAccountRef()) != "" {
+			continue
+		}
+		line.LedgerAccountRef = account
+	}
+	return lines
+}
+
 func moneyEquals(a, b *moneyv1.Money) bool {
 	if a == nil || b == nil {
 		return false

api/payments/orchestrator/internal/service/orchestrator/options.go

@@ -113,6 +113,24 @@ func WithCardGatewayRoutes(routes map[string]CardGatewayRoute) Option {
 	}
 }
 
+// WithFeeLedgerAccounts maps gateway identifiers to ledger accounts used for fees.
+func WithFeeLedgerAccounts(routes map[string]string) Option {
+	return func(s *Service) {
+		if len(routes) == 0 {
+			return
+		}
+		s.deps.feeLedgerAccounts = make(map[string]string, len(routes))
+		for k, v := range routes {
+			key := strings.ToLower(strings.TrimSpace(k))
+			val := strings.TrimSpace(v)
+			if key == "" || val == "" {
+				continue
+			}
+			s.deps.feeLedgerAccounts[key] = val
+		}
+	}
+}
+
 // WithClock overrides the default clock.
 func WithClock(clock clockpkg.Clock) Option {
 	return func(s *Service) {

api/payments/orchestrator/internal/service/orchestrator/quote_engine.go

@@ -52,7 +52,9 @@ func (s *Service) buildPaymentQuote(ctx context.Context, orgRef string, req *orc
 	} else if amount != nil {
 		feeCurrency = amount.GetCurrency()
 	}
-	feeTotal := extractFeeTotal(feeQuote.GetLines(), feeCurrency)
+	feeLines := cloneFeeLines(feeQuote.GetLines())
+	s.assignFeeLedgerAccounts(intent, feeLines)
+	feeTotal := extractFeeTotal(feeLines, feeCurrency)
 
 	var networkFee *chainv1.EstimateTransferFeeResponse
 	if shouldEstimateNetworkFee(intent) {
@@ -69,7 +71,7 @@ func (s *Service) buildPaymentQuote(ctx context.Context, orgRef string, req *orc
 		DebitAmount:              debitAmount,
 		ExpectedSettlementAmount: settlementAmount,
 		ExpectedFeeTotal:         feeTotal,
-		FeeLines:                 cloneFeeLines(feeQuote.GetLines()),
+		FeeLines:                 feeLines,
 		FeeRules:                 cloneFeeRules(feeQuote.GetApplied()),
 		FxQuote:                  fxQuote,
 		NetworkFee:               networkFee,
@@ -207,3 +209,53 @@ func (s *Service) requestFXQuote(ctx context.Context, orgRef string, req *orches
 	}
 	return quoteToProto(quote), nil
 }
+
+func (s *Service) feeLedgerAccountForIntent(intent *orchestratorv1.PaymentIntent) string {
+	if intent == nil || len(s.deps.feeLedgerAccounts) == 0 {
+		return ""
+	}
+
+	key := s.gatewayKeyFromIntent(intent)
+	if key == "" {
+		return ""
+	}
+	return strings.TrimSpace(s.deps.feeLedgerAccounts[key])
+}
+
+func (s *Service) assignFeeLedgerAccounts(intent *orchestratorv1.PaymentIntent, lines []*feesv1.DerivedPostingLine) {
+	account := s.feeLedgerAccountForIntent(intent)
+	key := s.gatewayKeyFromIntent(intent)
+
+	missing := 0
+	for _, line := range lines {
+		if line == nil {
+			continue
+		}
+		if strings.TrimSpace(line.GetLedgerAccountRef()) == "" {
+			missing++
+		}
+	}
+	if missing == 0 {
+		return
+	}
+
+	if account == "" {
+		s.logger.Debug("no fee ledger account mapping found", zap.String("gateway", key), zap.Int("missing_lines", missing))
+		return
+	}
+	assignLedgerAccounts(lines, account)
+	s.logger.Debug("applied fee ledger account mapping", zap.String("gateway", key), zap.String("ledger_account", account), zap.Int("lines", missing))
+}
+
+func (s *Service) gatewayKeyFromIntent(intent *orchestratorv1.PaymentIntent) string {
+	if intent == nil {
+		return ""
+	}
+	key := strings.TrimSpace(intent.GetAttributes()["gateway"])
+	if key == "" {
+		if dest := intent.GetDestination(); dest != nil && dest.GetCard() != nil {
+			key = defaultCardGateway
+		}
+	}
+	return strings.ToLower(key)
+}

api/payments/orchestrator/internal/service/orchestrator/service.go

@@ -47,6 +47,7 @@ type serviceDependencies struct {
 	oracle            oracleDependency
 	mntx              mntxDependency
 	cardRoutes        map[string]CardGatewayRoute
+	feeLedgerAccounts map[string]string
 }
 
 type handlerSet struct {

api/server/config.yml

@@ -90,8 +90,8 @@ api:
     call_timeout_seconds: 5
     insecure: true
   payment_orchestrator:
-    address: sendico_payment_orchestrator:50062
-    address_env: PAYMENT_ORCHESTRATOR_ADDRESS
+    address: sendico_payments_orchestrator:50062
+    address_env: PAYMENTS_ADDRESS
     dial_timeout_seconds: 5
     call_timeout_seconds: 5
     insecure: true

api/server/interface/api/srequest/payment_intent.go

@@ -15,6 +15,12 @@ type PaymentIntent struct {
 	Attributes     map[string]string `json:"attributes,omitempty"`
 }
 
+type AssetResolverStub struct{}
+
+func (a *AssetResolverStub) IsSupported(_ string) bool {
+	return true
+}
+
 func (p *PaymentIntent) Validate() error {
 	// Kind must be set (non-zero)
 	var zeroKind PaymentKind
@@ -33,7 +39,8 @@ func (p *PaymentIntent) Validate() error {
 	if p.Amount == nil {
 		return merrors.InvalidArgument("amount is required", "intent.amount")
 	}
-	if err := ValidateMoney(p.Amount); err != nil {
+	//TODO: collect supported currencies and validate against them
+	if err := ValidateMoney(p.Amount, &AssetResolverStub{}); err != nil {
 		return err
 	}
 

api/server/interface/api/srequest/payment_value_objects.go

@@ -1,30 +1,77 @@
 package srequest
 
 import (
+	"regexp"
+	"strings"
+
 	"github.com/shopspring/decimal"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/model"
 )
 
-func ValidateMoney(m *model.Money) error {
-	if m.Amount == "" {
-		return merrors.InvalidArgument("amount is required", "intent.amount")
-	}
-	if m.Currency == "" {
+// AssetResolver defines environment-specific supported assets.
+// Implementations should check:
+// - fiat assets (ISO-4217)
+// - crypto assets supported by gateways / FX providers
+type AssetResolver interface {
+	IsSupported(ticker string) bool
+}
+
+// Precompile regex for efficiency.
+var currencySyntax = regexp.MustCompile(`^[A-Z0-9]{2,10}$`)
+
+// ValidateCurrency validates currency syntax and checks dictionary via assetResolver.
+func ValidateCurrency(cur string, assetResolver AssetResolver) error {
+	// Basic presence
+	if strings.TrimSpace(cur) == "" {
 		return merrors.InvalidArgument("currency is required", "intent.currency")
 	}
 
-	if _, err := decimal.NewFromString(m.Amount); err != nil {
-		return merrors.InvalidArgument("invalid amount decimal", "intent.amount")
+	// Normalize
+	cur = strings.ToUpper(strings.TrimSpace(cur))
+
+	// Syntax check
+	if !currencySyntax.MatchString(cur) {
+		return merrors.InvalidArgument(
+			"invalid currency format (must be A–Z0–9, length 2–10)",
+			"intent.currency",
+		)
 	}
 
-	if len(m.Currency) != 3 {
-		return merrors.InvalidArgument("currency must be 3 letters", "intent.currency")
+	// Dictionary validation
+	if assetResolver == nil {
+		return merrors.InvalidArgument("asset resolver is not configured", "intent.currency")
 	}
-	for _, c := range m.Currency {
-		if c < 'A' || c > 'Z' {
-			return merrors.InvalidArgument("currency must be uppercase A-Z", "intent.currency")
+
+	if !assetResolver.IsSupported(cur) {
+		return merrors.InvalidArgument("unsupported currency/asset", "intent.currency")
 	}
+
+	return nil
+}
+
+func ValidateMoney(m *model.Money, assetResolver AssetResolver) error {
+	if m == nil {
+		return merrors.InvalidArgument("money is required", "intent.amount")
+	}
+
+	// 1) Basic presence
+	if strings.TrimSpace(m.Amount) == "" {
+		return merrors.InvalidArgument("amount is required", "intent.amount")
+	}
+
+	// 2) Validate decimal amount
+	amount, err := decimal.NewFromString(m.Amount)
+	if err != nil {
+		return merrors.InvalidArgument("invalid decimal amount", "intent.amount")
+	}
+	if amount.IsNegative() {
+		return merrors.InvalidArgument("amount must be >= 0", "intent.amount")
+	}
+
+	// 3) Validate currency via helper
+	if err := ValidateCurrency(m.Currency, assetResolver); err != nil {
+		return err
 	}
 
 	return nil
@@ -36,31 +83,15 @@ type CurrencyPair struct {
 }
 
 func (p *CurrencyPair) Validate() error {
-	if p.Base == "" {
-		return merrors.InvalidArgument("base currency is required", "intent.fx.pair.base")
+	if p == nil {
+		return merrors.InvalidArgument("currency pair is required", "currncy_pair")
 	}
-	if p.Quote == "" {
-		return merrors.InvalidArgument("quote currency is required", "intent.fx.pair.quote")
+	if err := ValidateCurrency(p.Base, nil); err != nil {
+		return merrors.InvalidArgument("invalid base currency in pair: "+err.Error(), "currency_pair.base")
 	}
-
-	if len(p.Base) != 3 {
-		return merrors.InvalidArgument("base currency must be 3 letters", "intent.fx.pair.base")
+	if err := ValidateCurrency(p.Quote, nil); err != nil {
+		return merrors.InvalidArgument("invalid quote currency in pair: "+err.Error(), "currency_pair.quote")
 	}
-	if len(p.Quote) != 3 {
-		return merrors.InvalidArgument("quote currency must be 3 letters", "intent.fx.pair.quote")
-	}
-
-	for _, c := range p.Base {
-		if c < 'A' || c > 'Z' {
-			return merrors.InvalidArgument("base currency must be uppercase A-Z", "intent.fx.pair.base")
-		}
-	}
-	for _, c := range p.Quote {
-		if c < 'A' || c > 'Z' {
-			return merrors.InvalidArgument("quote currency must be uppercase A-Z", "intent.fx.pair.quote")
-		}
-	}
-
 	return nil
 }
 

ci/prod/compose/bff.yml

@@ -31,6 +31,7 @@ services:
       NATS_PASSWORD: ${NATS_PASSWORD}
       CHAIN_GATEWAY_ADDRESS: ${CHAIN_GATEWAY_SERVICE_NAME}:${CHAIN_GATEWAY_GRPC_PORT}
       LEDGER_ADDRESS: ${LEDGER_SERVICE_NAME}:${LEDGER_GRPC_PORT}
+      PAYMENTS_ADDRESS: ${PAYMENTS_SERVICE_NAME}:${PAYMENTS_GRPC_PORT}
       MONGO_HOST: ${MONGO_HOST}
       MONGO_PORT: ${MONGO_PORT}
       MONGO_DATABASE: ${MONGO_DATABASE}

frontend/pshared/lib/models/resources.dart

@@ -82,6 +82,9 @@ enum ResourceType {
   @JsonValue('payment_methods')
   paymentMethods,
 
+  @JsonValue('payment_orchestrator')
+  paymentOrchestrator,
+
   /// Represents permissions service
   @JsonValue('permissions')
   permissions,