Auto commit Sat Apr 4 08:01:01 AM CDT 2026

app/src/main/java/com/mindmachine/mvp/MainActivity.kt

@@ -104,6 +104,7 @@ import com.mindmachine.mvp.session.flashIntervalMsToSeconds
 import com.mindmachine.mvp.session.flashIntervalSecondsToMs
 import com.mindmachine.mvp.session.formatDuration
 import com.mindmachine.mvp.session.sessionProgressFraction
+import com.mindmachine.mvp.session.shouldRequireStopConfirmation
 import com.mindmachine.mvp.session.shouldShowActiveControlsByDefault
 import com.mindmachine.mvp.session.shouldUseImmersiveFullscreen
 import kotlinx.coroutines.delay
@@ -113,6 +114,11 @@ import java.util.Locale
 private const val SESSION_ENTRY_HOME = "home"
 private const val SESSION_ENTRY_SETUP = "setup"
 
+private enum class StopConfirmationAction {
+    BACK,
+    STOP_BUTTON,
+}
+
 private val MindMachineColors = darkColorScheme(
     primary = Color(0xFF8AB4FF),
     onPrimary = Color(0xFF001B3D),
@@ -483,8 +489,14 @@ fun ActiveSessionScreen(vm: MainViewModel, onFinish: () -> Unit, onBackToEntry:
     val ui by vm.ui.collectAsStateWithLifecycle()
     if (ui.runtimeState == RuntimeState.COMPLETED) onFinish()
 
+    var stopConfirmationAction by remember { mutableStateOf<StopConfirmationAction?>(null) }
+
     BackHandler {
-        onBackToEntry()
+        if (shouldRequireStopConfirmation(ui.runtimeState)) {
+            stopConfirmationAction = StopConfirmationAction.BACK
+        } else {
+            onBackToEntry()
+        }
     }
 
     val isVisualMode = true
@@ -633,7 +645,17 @@ fun ActiveSessionScreen(vm: MainViewModel, onFinish: () -> Unit, onBackToEntry:
                 } else {
                     Button(onClick = { vm.resume() }, modifier = Modifier.fillMaxWidth()) { Text("Resume") }
                 }
-                OutlinedButton(onClick = { vm.stop(); onFinish() }, modifier = Modifier.fillMaxWidth()) { Text("Stop") }
+                OutlinedButton(
+                    onClick = {
+                        if (shouldRequireStopConfirmation(ui.runtimeState)) {
+                            stopConfirmationAction = StopConfirmationAction.STOP_BUTTON
+                        } else {
+                            vm.stop()
+                            onFinish()
+                        }
+                    },
+                    modifier = Modifier.fillMaxWidth()
+                ) { Text("Stop") }
                 if (ui.interruptionReason != null) {
                     Text(ui.interruptionReason!!, color = Color.White)
                     if (ui.runtimeState == RuntimeState.INTERRUPTED) {
@@ -645,6 +667,36 @@ fun ActiveSessionScreen(vm: MainViewModel, onFinish: () -> Unit, onBackToEntry:
             }
         }
     }
+
+    if (stopConfirmationAction != null) {
+        AlertDialog(
+            onDismissRequest = { stopConfirmationAction = null },
+            title = { Text("End session?") },
+            text = { Text("Your current session will stop and return to the previous screen.") },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        when (stopConfirmationAction) {
+                            StopConfirmationAction.BACK -> onBackToEntry()
+                            StopConfirmationAction.STOP_BUTTON -> {
+                                vm.stop()
+                                onFinish()
+                            }
+                            null -> Unit
+                        }
+                        stopConfirmationAction = null
+                    }
+                ) {
+                    Text("End session", color = Color(0xFFFF5252))
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { stopConfirmationAction = null }) {
+                    Text("Keep running")
+                }
+            }
+        )
+    }
 }
 
 @Composable

app/src/main/java/com/mindmachine/mvp/session/ActiveSessionUi.kt

@@ -11,3 +11,10 @@ fun sessionProgressFraction(durationSec: Int, remainingSec: Int): Float {
     val elapsed = (total - remainingSec).coerceIn(0, total)
     return elapsed.toFloat() / total.toFloat()
 }
+
+fun shouldRequireStopConfirmation(runtimeState: RuntimeState): Boolean {
+    return runtimeState == RuntimeState.COUNTDOWN ||
+        runtimeState == RuntimeState.RUNNING ||
+        runtimeState == RuntimeState.PAUSED ||
+        runtimeState == RuntimeState.INTERRUPTED
+}