feat: handle input change

Author: jvsena42

app/src/main/java/to/bitkit/ui/screens/transfer/SpendingAmountScreen.kt

@@ -13,9 +13,6 @@ import androidx.compose.material3.HorizontalDivider
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.testTag
@@ -77,16 +74,14 @@ fun SpendingAmountScreen(
         }
     }
 
-    var input: String by remember { mutableStateOf(uiState.input) }
-
     AmountInputHandler(
-        input = input,
+        input = uiState.input,
         overrideSats = uiState.overrideSats,
         primaryDisplay = currencies.primaryDisplay,
         displayUnit = currencies.displayUnit,
-        onInputChanged = { newInput -> input = newInput },
+        onInputChanged = viewModel::onInputChanged,
         onAmountCalculated = { sats ->
-            viewModel.onAmountChanged(sats.toLongOrDefault(0))
+            viewModel.handleCalculatedAmount(sats.toLongOrDefault(0))
         },
     )
 
@@ -98,7 +93,7 @@ fun SpendingAmountScreen(
         onClickQuarter = viewModel::onClickQuarter,
         onClickMaxAmount = viewModel::onClickMaxAmount,
         onConfirmAmount = viewModel::onConfirmAmount,
-        onInputChanged = { newInput -> input = newInput },
+        onInputChanged = viewModel::onInputChanged,
     )
 }
 

app/src/main/java/to/bitkit/viewmodels/TransferViewModel.kt

@@ -152,7 +152,11 @@ class TransferViewModel @Inject constructor(
         }
     }
 
-    fun onAmountChanged(sats: Long) {
+    fun onInputChanged(newInput: String) {
+        _spendingUiState.update { it.copy(input = newInput) }
+    }
+
+    fun handleCalculatedAmount(sats: Long) {
         if (sats > _spendingUiState.value.maxAllowedToSend) {
             setTransferEffect(
                 TransferEffect.ToastError(