(legacy) Replace home screen with migration prompt (#658)

Legacy channels have now all been closed, and the legacy app
can only be used to import closed legacy channels for users
who uninstalled the app.

The settings menu has also been cleaned up.

phoenix-android/src/main/kotlin/fr/acinq/phoenix/android/settings/SettingsView.kt

@@ -16,6 +16,7 @@
 
 package fr.acinq.phoenix.android.settings
 
+import android.widget.Toast
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
@@ -26,8 +27,10 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
@@ -60,7 +63,7 @@ fun SettingsView(
     val nc = navController
     val context = LocalContext.current
     val scope = rememberCoroutineScope()
-    var debugClickCount by remember { mutableStateOf(0) }
+    var debugClickCount by remember { mutableIntStateOf(0) }
     val notices = noticesViewModel.notices
     val notifications = business.notificationsManager.notifications.collectAsState()
 
@@ -78,6 +81,23 @@ fun SettingsView(
             )
         }
 
+        if (debugClickCount > 10) {
+            LaunchedEffect(key1 = Unit) {
+                Toast.makeText(context, "Debug mode enabled", Toast.LENGTH_SHORT).show()
+            }
+            // -- debug
+            CardHeader(text = "DEBUG")
+            Card {
+                MenuButton(
+                    text = "Switch to legacy app (DEBUG)",
+                    icon = R.drawable.ic_settings,
+                    onClick = {
+                        scope.launch { LegacyPrefsDatastore.saveStartLegacyApp(context, LegacyAppStatus.Required.Expected) }
+                    },
+                )
+            }
+        }
+
         // -- general
         CardHeader(text = stringResource(id = R.string.settings_general_title))
         Card {
@@ -125,23 +145,6 @@ fun SettingsView(
             )
         }
 
-        if (debugClickCount > 10) {
-            // -- debug
-            CardHeader(text = "DEBUG")
-            Card {
-                Button(
-                    text = "Switch to legacy app (DEBUG)",
-                    icon = R.drawable.ic_user,
-                    onClick = {
-                        scope.launch {
-                            LegacyPrefsDatastore.saveStartLegacyApp(context, LegacyAppStatus.Required.Expected)
-                        }
-                    },
-                    modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Start
-                )
-            }
-        }
-
         Spacer(Modifier.height(32.dp))
     }
 }