AND-9336, AND-9340: Fix Kaspa fee & utxo issues

tangem · Dec 11, 2024 · 23a2f4d · 23a2f4d
1 parent 5068da7
commit 23a2f4d
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Showing 3 changed files with 3 additions and 2 deletions.
diff --git a/blockchain/src/main/java/com/tangem/blockchain/blockchains/kaspa/KaspaTransactionBuilder.kt b/blockchain/src/main/java/com/tangem/blockchain/blockchains/kaspa/KaspaTransactionBuilder.kt
@@ -293,7 +293,7 @@ class KaspaTransactionBuilder(
     }
 
     fun calculateChange(amount: BigDecimal, fee: BigDecimal, unspentOutputs: List<KaspaUnspentOutput>): BigDecimal {
-        val fullAmount = unspentOutputs.map { it.amount }.reduce { acc, number -> acc + number }
+        val fullAmount = unspentOutputs.sumOf { it.amount }
         return fullAmount - (amount + fee)
     }
 

diff --git a/blockchain/src/main/java/com/tangem/blockchain/blockchains/kaspa/KaspaWalletManager.kt b/blockchain/src/main/java/com/tangem/blockchain/blockchains/kaspa/KaspaWalletManager.kt
@@ -131,7 +131,7 @@ internal class KaspaWalletManager(
         val unspentOutputCount = transactionBuilder.getUnspentsToSpendCount()
 
         return if (unspentOutputCount == 0) {
-            Result.Failure(Exception("No unspent outputs found").toBlockchainSdkError()) // shouldn't happen
+            Result.Failure(BlockchainSdkError.Kaspa.ZeroUtxoError)
         } else {
             val source = wallet.address
 

diff --git a/blockchain/src/main/java/com/tangem/blockchain/common/Exceptions.kt b/blockchain/src/main/java/com/tangem/blockchain/common/Exceptions.kt
@@ -99,6 +99,7 @@ sealed class BlockchainSdkError(
             "Due to Kaspa limitations only $maxOutputs UTXOs can fit in a single transaction. This means you can only" +
                 " send ${maxAmount.toPlainString()}. You need to reduce the amount",
         )
+        data object ZeroUtxoError : Kaspa(3)
     }
 
     sealed class Ton(