Updated on 2026-08-14

libs/crypto/src/main/java/com/tangem/lib/crypto/TransactionManager.kt

@@ -0,0 +1,17 @@
+package com.tangem.lib.crypto
+
+import com.tangem.lib.crypto.models.Currency
+import com.tangem.lib.crypto.models.transactions.SendTxResult
+import java.math.BigDecimal
+
+interface TransactionManager {
+
+    suspend fun sendTransaction(
+        networkId: String,
+        amountToSend: BigDecimal,
+        currencyToSend: Currency,
+        feeAmount: BigDecimal,
+        destinationAddress: String,
+        dataToSign: String,
+    ): SendTxResult
+}

libs/crypto/src/main/java/com/tangem/lib/crypto/models/Currency.kt

@@ -4,9 +4,25 @@ package com.tangem.lib.crypto.models
  * Currency data class that can be native blockchain Token
  * or custom Token (used in this lib to replace and divide logic Currency from app module)
  */
-abstract class Currency(
+sealed class Currency(
     open val id: String,
     open val name: String,
     open val symbol: String,
     open val networkId: String,
-)
+)
+
+data class NativeToken(
+    override val id: String,
+    override val name: String,
+    override val symbol: String,
+    override val networkId: String,
+) : Currency(id, name, symbol, networkId)
+
+class NonNativeToken(
+    override val id: String,
+    override val name: String,
+    override val symbol: String,
+    override val networkId: String,
+    val contractAddress: String,
+    val decimalCount: Int,
+) : Currency(id, name, symbol, networkId)

libs/crypto/src/main/java/com/tangem/lib/crypto/models/NativeToken.kt

@@ -1,8 +0,0 @@
-package com.tangem.lib.crypto.models
-
-data class NativeToken(
-    override val id: String,
-    override val name: String,
-    override val symbol: String,
-    override val networkId: String,
-) : Currency(id, name, symbol, networkId)

libs/crypto/src/main/java/com/tangem/lib/crypto/models/NonNativeToken.kt

@@ -1,10 +0,0 @@
-package com.tangem.lib.crypto.models
-
-class NonNativeToken(
-    override val id: String,
-    override val name: String,
-    override val symbol: String,
-    override val networkId: String,
-    val contractAddress: String,
-    val decimalCount: Int,
-) : Currency(id, name, symbol, networkId)

libs/crypto/src/main/java/com/tangem/lib/crypto/models/transactions/SendTxResult.kt

@@ -0,0 +1,10 @@
+package com.tangem.lib.crypto.models.transactions
+
+sealed interface SendTxResult {
+
+    object Success : SendTxResult
+    object UserCancelledError : SendTxResult
+    data class TangemSdkError(val code: Int, val cause: Throwable?) : SendTxResult
+    data class BlockchainSdkError(val code: Int, val cause: Throwable?) : SendTxResult
+    data class UnknownError(val ex: Exception? = null) : SendTxResult
+}