feat: add percentage loyalti setting mode

internal/constants/loyalty.go

@@ -7,12 +7,16 @@ package constants
 // Per outlet (F1): what an order earns, and whether EnakPoint can pay.
 const (
 	LoyaltyPointEnabledKey        = "loyalty.point.enabled"
+	LoyaltyPointEarnModeKey       = "loyalty.point.earn_mode"
+	LoyaltyPointEarnPercentKey    = "loyalty.point.earn_percent"
 	LoyaltyPointEarnPerAmountKey  = "loyalty.point.earn_per_amount"
 	LoyaltyPointEarnValueKey      = "loyalty.point.earn_value"
 	LoyaltyPointMinOrderAmountKey = "loyalty.point.min_order_amount"
 	LoyaltyPointMaxPerOrderKey    = "loyalty.point.max_per_order"
 
 	LoyaltyCoinEnabledKey        = "loyalty.coin.enabled"
+	LoyaltyCoinEarnModeKey       = "loyalty.coin.earn_mode"
+	LoyaltyCoinEarnPercentKey    = "loyalty.coin.earn_percent"
 	LoyaltyCoinEarnPerAmountKey  = "loyalty.coin.earn_per_amount"
 	LoyaltyCoinEarnValueKey      = "loyalty.coin.earn_value"
 	LoyaltyCoinMinOrderAmountKey = "loyalty.coin.min_order_amount"
@@ -47,6 +51,14 @@ const (
 	LoyaltyExpiryGraceMonthsSuffix  = "expiry_grace_months"
 )
 
+// Modes of loyalty.{point,coin}.earn_mode.
+const (
+	// earn_value for every earn_per_amount rupiah of the basis.
+	LoyaltyEarnModePerAmount = "PER_AMOUNT"
+	// earn_percent percent of the basis.
+	LoyaltyEarnModePercentage = "PERCENTAGE"
+)
+
 // Units of loyalty.{point,coin}.expiry_unit.
 const (
 	LoyaltyExpiryUnitDay   = "DAY"
@@ -66,6 +78,8 @@ const (
 	LoyaltyPointEarnPerAmountDefault = int64(100)
 	LoyaltyCoinEarnPerAmountDefault  = int64(25000)
 	LoyaltyEarnValueDefault          = int64(1)
+	LoyaltyEarnModeDefault           = LoyaltyEarnModePerAmount
+	LoyaltyEarnPercentDefault        = float64(1)
 
 	LoyaltyMinPaymentPointsDefault  = int64(1)
 	LoyaltyMaxPaymentPercentDefault = int64(100)