add left item enchantment cost toggle

src/main/kotlin/io/delilaheve/util/ConfigOptions.kt

@@ -75,6 +75,8 @@ object ConfigOptions {
     const val DISABLE_MERGE_OVER_ROOT = "disable-merge-over"
 
     const val IMMUTABLE_ENCHANTMENT_LIST = "immutable_enchantments"
+    
+    const val INCLUDE_LEFT_ENCHANTMENT_FOR_COST = "include_left_enchantment_for_cost"
 
     // Monetary configs
     const val MONETARY_USAGE_ROOT = "monetary_cost"
@@ -110,6 +112,8 @@ object ConfigOptions {
 
     const val DEFAULT_ENCHANT_COUNT_LIMIT = -1
 
+    const val DEFAULT_INCLUDE_LEFT_ENCHANTMENT_FOR_COST = false
+
     // Color related config
     const val DEFAULT_ALLOW_COLOR_CODE = false
     const val DEFAULT_ALLOW_HEXADECIMAL_COLOR = false
@@ -434,6 +438,13 @@ object ConfigOptions {
                 ?: DEFAULT_ENCHANT_COUNT_LIMIT
         }
 
+    val includeLeftEnchantmentForCost: Boolean
+        get() {
+            return ConfigHolder.DEFAULT_CONFIG
+                .config
+                .getBoolean(INCLUDE_LEFT_ENCHANTMENT_FOR_COST, DEFAULT_INCLUDE_LEFT_ENCHANTMENT_FOR_COST)
+        }
+
     /**
      * Whether to show debug logging
      */

src/main/kotlin/xyz/alexcrea/cuanvil/anvil/AnvilMergeLogic.kt

@@ -198,7 +198,7 @@ object AnvilMergeLogic {
         if (hasChanged) {
             resultItem.setEnchantmentsUnsafe(newEnchants)
             // Calculate enchantment cost
-            AnvilXpUtil.getRightValues(second, resultItem, cost)
+            AnvilXpUtil.getRightValues(first, second, resultItem, cost)
         }
 
         // Calculate repair cost

src/main/kotlin/xyz/alexcrea/cuanvil/util/anvil/AnvilXpUtil.kt

@@ -240,17 +240,21 @@ object AnvilXpUtil {
     }
 
     /**
-     * Function to calculate right enchantment values
+     * Function to calculate enchantments values
      * it include enchantment placed on final item and conflicting enchantment
      */
-    fun getRightValues(right: ItemStack, result: ItemStack, cost: AnvilCost) {
+    fun getRightValues(left: ItemStack, right: ItemStack, result: ItemStack, cost: AnvilCost) {
         // Calculate right value and illegal enchant penalty
 
         val rightIsFormBook = right.isEnchantedBook()
+        val rightEnchs = right.findEnchantments()
         val resultEnchs = result.findEnchantments()
         val resultEnchsKeys = HashMap(resultEnchs)
 
-        for (enchantment in right.findEnchantments()) {
+        var rightValue = 0
+        var leftValue = 0
+
+        for (enchantment in rightEnchs) {
             // count enchant as illegal enchant if it conflicts with another enchant or not in result
             if ((enchantment.key !in resultEnchsKeys)) {
                 resultEnchsKeys[enchantment.key] = enchantment.value
@@ -272,13 +276,31 @@ object AnvilXpUtil {
 
             val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, rightIsFormBook)
             val value = resultLevel * enchantmentMultiplier
-            CustomAnvil.log("Value for ${enchantment.key.enchantmentName} level ${enchantment.value} is $value ($resultLevel * $enchantmentMultiplier)")
-            cost.enchantment += value
+            CustomAnvil.log("Value for sacrifice item ${enchantment.key.enchantmentName} level ${enchantment.value} is $value ($resultLevel * $enchantmentMultiplier)")
+            rightValue += value
 
         }
+        if(ConfigOptions.includeLeftEnchantmentForCost) {
+            val leftIsFormBook = left.isEnchantedBook()
+            val leftEnchs = left.findEnchantments()
+            for (enchantment in leftEnchs) {
+                // Do not process enchantment that are present on the sacrifice
+                if(rightEnchs.contains(enchantment.key)) continue
+
+                val resultLevel = resultEnchs.getOrDefault(enchantment.key, 0)
+
+                val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, leftIsFormBook)
+                val value = resultLevel * enchantmentMultiplier
+                CustomAnvil.log("Value for left item ${enchantment.key.enchantmentName} level ${enchantment.value} is $value ($resultLevel * $enchantmentMultiplier)")
+                leftValue += value
+            }
+        }
+
+        cost.enchantment = rightValue + leftValue
         CustomAnvil.log(
             "Calculated right values: " +
-                    "rightValue: ${cost.enchantment}, " +
+                    "rightValue: ${rightValue}, " +
+                    "leftValue: ${leftValue}, " +
                     "illegalPenalty: ${cost.illegalPenalty}"
         )
     }