make it possible to rename a wallet

sorry for being lazy for some days

app/src/main/java/eu/m724/coincounter/WalletActivity.kt

@@ -111,10 +111,17 @@ fun App(
     val wallet = walletState
 
     var actionsVisible by rememberSaveable { mutableStateOf(false) }
+    var renameVisible by rememberSaveable { mutableStateOf(false) }
 
     if (actionsVisible) {
         ActionsDialog(
-            onDismiss = { actionsVisible = false },
+            onRename = {
+                actionsVisible = false
+                renameVisible = true
+            },
+            onDismiss = {
+                actionsVisible = false
+            },
             onDelete = {
                 viewModel.delete()
                 finish()
@@ -122,6 +129,18 @@ fun App(
         )
     }
 
+    if (renameVisible) {
+        RenameDialog(
+            name = wallet!!.label,
+            onDismiss = { renameVisible = false },
+            onRename = {
+                viewModel.rename(it)
+                wallet.label = it
+                renameVisible = false
+            }
+        )
+    }
+
     if (wallet != null) {
         Column(
             modifier = Modifier.fillMaxWidth(),
@@ -288,8 +307,68 @@ fun TransactionDialog(
     }
 }
 
+@Composable
+fun RenameDialog(
+    name: String,
+    onDismiss: () -> Unit,
+    onRename: (String) -> Unit
+) {
+    var value by rememberSaveable { mutableStateOf(name) }
+    val focusRequester = remember { FocusRequester() }
+
+    LaunchedEffect(Unit) {
+        focusRequester.requestFocus()
+    }
+
+    Dialog(
+        onDismissRequest = {
+            onDismiss()
+        }
+    ) {
+        Card {
+            Column(
+                modifier = Modifier.padding(16.dp)
+            ) {
+                Row {
+                    TextField(
+                        value = value,
+                        onValueChange = { value = it },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .weight(1f)
+                            .focusRequester(focusRequester),
+                        supportingText = { Text("New name") },
+                        singleLine = true
+                    )
+                }
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End
+                ) {
+                    TextButton(
+                        onClick = {
+                            value = name
+                            onDismiss()
+                        }
+                    ) {
+                        Text(text = "Cancel")
+                    }
+                    TextButton(
+                        onClick = {
+                            onRename(value)
+                        }
+                    ) {
+                        Text("Rename")
+                    }
+                }
+            }
+        }
+    }
+}
+
 @Composable
 fun ActionsDialog(
+    onRename: () -> Unit,
     onDismiss: () -> Unit,
     onDelete: () -> Unit
 ) {
@@ -305,6 +384,9 @@ fun ActionsDialog(
             Column(
                 modifier = Modifier.padding(16.dp)
             ) {
+                TextButton(onClick = onRename) {
+                    Text("Rename wallet")
+                }
                 TextButton(onClick = onDelete) {
                     Text("Delete wallet")
                 }

app/src/main/java/eu/m724/coincounter/WalletViewModel.kt

@@ -8,6 +8,7 @@ import eu.m724.coincounter.data.entity.Wallet
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 import kotlin.properties.Delegates
@@ -33,6 +34,17 @@ class WalletViewModel @Inject constructor(
         }
     }
 
+    fun rename(label: String) {
+        wallet = wallet.map {
+            it.copy(label = label)
+        }
+
+        viewModelScope.launch(Dispatchers.IO) {
+            val wallet = wallet.first()
+            repository.updateWallet(wallet)
+        }
+    }
+
     fun transact(value: Int, label: String?) {
         val transaction = Transaction(
             walletId = walletId,