Show replace modifier as negative disocunt (APPS-2496) (#265)

Author: Fabtron

CHANGELOG.md

@@ -7,6 +7,10 @@ All notable changes to this project will be documented in this file.
 ### Removed
 ### Fixed
 
+## [0.82.3]
+### Fixed
+* ui: Show replace Modifiers as negative discount
+
 ## [0.82.2]
 ### Added
 * core: Add function to search for products by a prefix 

ui/src/main/java/io/snabble/sdk/ui/cart/shoppingcart/ShoppingCartViewModel.kt

@@ -198,27 +198,33 @@ class ShoppingCartViewModel : ViewModel() {
                     val name = priceModifier.name.orEmpty()
                     val weightUnit = item.item.lineItem?.weightUnit
                     val referenceUnit = item.item.lineItem?.referenceUnit
-                    val modifiedPrice = if (weightUnit != null && referenceUnit != null) {
-                        priceModifier
-                            .convertPriceModifier(
-                                amount = item.quantity,
-                                weightedUnit = weightUnit,
-                                referencedUnit = referenceUnit
-                            )
-                            .let { priceFormatter?.format(it).orEmpty() }
-                    } else {
-                        (priceModifier.price * item.quantity).let {
-                            priceFormatter?.format(it).orEmpty()
+                    val modifiedPrice =
+                        if (priceModifier.action == "replace") {
+                            priceFormatter?.format(
+                                (item.item.lineItem?.price ?: 0) - priceModifier.price
+                            ).orEmpty()
+                        } else if (weightUnit != null && referenceUnit != null) {
+                            priceModifier
+                                .convertPriceModifier(
+                                    amount = item.quantity,
+                                    weightedUnit = weightUnit,
+                                    referencedUnit = referenceUnit
+                                )
+                                .let { priceFormatter?.format(it).orEmpty() }
+                        } else {
+                            (priceModifier.price * item.quantity).let {
+                                priceFormatter?.format(it).orEmpty()
+                            }
                         }
-                    }
                     // Set this to zero because the backend already subtracted the discount from the total price:
                     val discountValue = 0
                     modifiedPrice.let {
                         discounts.add(
                             DiscountItem(
                                 name = name,
                                 discount = modifiedPrice,
-                                discountValue = discountValue
+                                discountValue = discountValue,
+                                useNegativeValue = priceModifier.action == "replace"
                             )
                         )
                     }

ui/src/main/java/io/snabble/sdk/ui/cart/shoppingcart/product/model/DiscountItem.kt

@@ -3,5 +3,6 @@ package io.snabble.sdk.ui.cart.shoppingcart.product.model
 internal data class DiscountItem(
     val name: String,
     val discount: String,
-    val discountValue: Int
+    val discountValue: Int,
+    val useNegativeValue: Boolean = false
 )

ui/src/main/java/io/snabble/sdk/ui/cart/shoppingcart/product/widget/Product.kt

@@ -90,7 +90,7 @@ private fun DiscountItemWidget(it: DiscountItem) {
         verticalAlignment = Alignment.CenterVertically
     ) {
         Text(
-            it.discount,
+            if (it.useNegativeValue) "-${it.discount}" else it.discount,
             style = MaterialTheme.typography.bodySmall,
             color = MaterialTheme.colorScheme.onSurface
         )