all the refactor

pkg/promotions/eval.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"git.k6n.net/mats/go-cart-actor/pkg/cart"
+	"git.k6n.net/mats/platform/money"
 )
 
 var errInvalidTimeFormat = errors.New("invalid time format")
@@ -28,14 +29,14 @@ type PromotionItem struct {
 	SKU         string
 	Quantity    uint16
 	Category    string
-	PriceIncVat int64
+	PriceIncVat money.Cents
 }
 
 // PromotionEvalContext carries all dynamic data required to evaluate promotion
 // conditions. It can be constructed from a cart.CartGrain plus optional
 // customer/order metadata.
 type PromotionEvalContext struct {
-	CartTotalIncVat       int64
+	CartTotalIncVat       money.Cents
 	TotalItemQuantity     uint32
 	Items                 []PromotionItem
 	CustomerSegment       string
@@ -358,7 +359,7 @@ func evaluateGroup(g ConditionGroup, ctx *PromotionEvalContext) bool {
 func evaluateBaseCondition(b BaseCondition, ctx *PromotionEvalContext) bool {
 	switch b.Type {
 	case CondCartTotal:
-		return evalNumberCompare(float64(ctx.CartTotalIncVat), b)
+		return evalNumberCompare(float64(ctx.CartTotalIncVat.Int64()), b)
 	case CondItemQuantity:
 		return evalNumberCompare(float64(ctx.TotalItemQuantity), b)
 	case CondCustomerSegment: