+ quotation provider

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

@@ -1,8 +1,33 @@
 package srequest
 
-type Money struct {
-	Amount   string `json:"amount"`
-	Currency string `json:"currency"`
+import (
+	"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 == "" {
+		return merrors.InvalidArgument("currency is required", "intent.currency")
+	}
+
+	if _, err := decimal.NewFromString(m.Amount); err != nil {
+		return merrors.InvalidArgument("invalid amount decimal", "intent.amount")
+	}
+
+	if len(m.Currency) != 3 {
+		return merrors.InvalidArgument("currency must be 3 letters", "intent.currency")
+	}
+	for _, c := range m.Currency {
+		if c < 'A' || c > 'Z' {
+			return merrors.InvalidArgument("currency must be uppercase A-Z", "intent.currency")
+		}
+	}
+
+	return nil
 }
 
 type CurrencyPair struct {
@@ -10,6 +35,35 @@ type CurrencyPair struct {
 	Quote string `json:"quote"`
 }
 
+func (p *CurrencyPair) Validate() error {
+	if p.Base == "" {
+		return merrors.InvalidArgument("base currency is required", "intent.fx.pair.base")
+	}
+	if p.Quote == "" {
+		return merrors.InvalidArgument("quote currency is required", "intent.fx.pair.quote")
+	}
+
+	if len(p.Base) != 3 {
+		return merrors.InvalidArgument("base currency must be 3 letters", "intent.fx.pair.base")
+	}
+	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
+}
+
 type FXIntent struct {
 	Pair              *CurrencyPair `json:"pair,omitempty"`
 	Side              FXSide        `json:"side,omitempty"`
@@ -18,3 +72,29 @@ type FXIntent struct {
 	PreferredProvider string        `json:"preferred_provider,omitempty"`
 	MaxAgeMs          int32         `json:"max_age_ms,omitempty"`
 }
+
+func (fx *FXIntent) Validate() error {
+	if fx.Pair != nil {
+		if err := fx.Pair.Validate(); err != nil {
+			return err
+		}
+	}
+
+	var zeroSide FXSide
+	if fx.Side == zeroSide {
+		return merrors.InvalidArgument("fx side is required", "intent.fx.side")
+	}
+
+	if fx.TTLms < 0 {
+		return merrors.InvalidArgument("fx ttl_ms cannot be negative", "intent.fx.ttl_ms")
+	}
+	if fx.TTLms == 0 && fx.Firm {
+		return merrors.InvalidArgument("firm quote requires positive ttl_ms", "intent.fx.ttl_ms")
+	}
+
+	if fx.MaxAgeMs < 0 {
+		return merrors.InvalidArgument("fx max_age_ms cannot be negative", "intent.fx.max_age_ms")
+	}
+
+	return nil
+}