Updated on 2026-08-14

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

@@ -29,4 +29,6 @@ interface TransactionManager {
 
     @Throws(IllegalStateException::class)
     fun getNativeTokenDecimals(networkId: String): Int
+
+    fun calculateFee(networkId: String, gasPrice: String, estimatedGas: Int): BigDecimal
 }

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

@@ -53,4 +53,10 @@ interface UserWalletManager {
     * Returns selected app currency
     */
     fun getUserAppCurrency(): ProxyFiatCurrency
+
+    /**
+     * @param networkId
+     * @return currency name
+     */
+    fun getCurrencyByNetworkId(networkId: String): String
 }