feat: Hide transfer to spending if there are no LN channels

Author: ovitrif

app/src/main/java/to/bitkit/ui/screens/wallets/HomeScreen.kt

@@ -144,6 +144,7 @@ fun HomeScreen(
                 ) {
                     val hasSeenSavingsIntro by appViewModel.hasSeenSavingsIntro.collectAsState()
                     SpendingWalletScreen(
+                        uiState = uiState,
                         onAllActivityButtonClick = { rootNavController.navigateToAllActivity() },
                         onActivityItemClick = { rootNavController.navigateToActivityItem(it) },
                         onTransferToSavingsClick = {

app/src/main/java/to/bitkit/ui/screens/wallets/SpendingWalletScreen.kt

@@ -37,9 +37,11 @@ import to.bitkit.ui.screens.wallets.activity.ActivityListWithHeaders
 import to.bitkit.ui.theme.AppThemeSurface
 import to.bitkit.ui.theme.Colors
 import to.bitkit.ui.utils.withAccent
+import to.bitkit.viewmodels.MainUiState
 
 @Composable
 fun SpendingWalletScreen(
+    uiState: MainUiState,
     onAllActivityButtonClick: () -> Unit,
     onActivityItemClick: (String) -> Unit,
     onTransferToSavingsClick: () -> Unit,
@@ -50,8 +52,11 @@ fun SpendingWalletScreen(
         // TODO use && hasLnActivity + LN spendingSats
         mutableStateOf(balances.totalLightningSats == 0uL)
     }
-    val canTransfer by remember(balances.totalLightningSats) {
-        mutableStateOf(balances.totalLightningSats > 0uL)
+    val canTransfer by remember(balances.totalLightningSats, uiState.channels.size) {
+        val hasLnBalance = balances.totalLightningSats > 0uL
+        val hasChannels = uiState.channels.isNotEmpty()
+
+        mutableStateOf(hasLnBalance && hasChannels)
     }
 
     Box(
@@ -124,6 +129,7 @@ fun SpendingWalletScreen(
 private fun SpendingWalletScreenPreview() {
     AppThemeSurface {
         SpendingWalletScreen(
+            uiState = MainUiState(),
             onAllActivityButtonClick = {},
             onActivityItemClick = {},
             onTransferToSavingsClick = {},