Fixed Amount for Apple platforms

BankingClientModel/src/appleMain/kotlin/net/codinux/banking/client/model/Amount.apple.kt

@@ -2,28 +2,42 @@ package net.codinux.banking.client.model
 
 import platform.Foundation.NSDecimalNumber
 import net.codinux.banking.client.model.config.NoArgConstructor
+import platform.Foundation.NSDecimalNumberHandler
+import platform.Foundation.NSRoundingMode
 
 @NoArgConstructor
-actual class Amount actual constructor(amount: String) : NSDecimalNumber(string = amount) {
+actual class Amount actual constructor(amount: String) {
 
     actual companion object {
         actual val Zero = Amount("0.00")
+
+        private val handler = NSDecimalNumberHandler.decimalNumberHandlerWithRoundingMode(roundingMode = NSRoundingMode.NSRoundBankers, scale = DecimalPrecision.toShort(), false, false, false, false)
     }
 
 
+    internal val amount = NSDecimalNumber(string = amount)
+
+
     actual operator fun plus(other: Amount): Amount =
-        Amount(this.decimalNumberByAdding(other).stringValue)
+        Amount(amount.decimalNumberByAdding(other.amount).stringValue)
 
     actual operator fun minus(other: Amount): Amount =
-        Amount(this.decimalNumberBySubtracting(other).stringValue)
+        Amount(amount.decimalNumberBySubtracting(other.amount).stringValue)
 
     actual operator fun times(other: Amount): Amount =
-        Amount(this.decimalNumberByMultiplyingBy(other).stringValue)
+        Amount(amount.decimalNumberByMultiplyingBy(other.amount).stringValue)
 
     actual operator fun div(other: Amount): Amount =
-        Amount(this.decimalNumberByDividingBy(other).stringValue)
+        Amount(amount.decimalNumberByDividingBy(other.amount, handler).stringValue)
 
 
-    actual override fun toString(): String = this.stringValue
+    override fun equals(other: Any?): Boolean {
+        return other is Amount && this.amount == other.amount
+    }
+
+    override fun hashCode() =
+        amount.hashCode()
+
+    actual override fun toString(): String = amount.stringValue
 
 }