feat(device-initialization, core): Unterstützung für Hilfe-Tooltips, Netzwerk-Interface-Auswahl & Discovery-Radar ergänzt

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

frontend/core/design-system/src/commonMain/kotlin/at/mocode/frontend/core/designsystem/components/MsEnumDropdown.kt

@@ -1,10 +1,11 @@
 package at.mocode.frontend.core.designsystem.components
 
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material.icons.Icons
-import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.filled.HelpOutline
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.key.*
 import androidx.compose.ui.unit.dp
@@ -31,6 +32,7 @@ fun <T : Enum<T>> MsEnumDropdown(
   onOptionSelected: (T) -> Unit,
   modifier: Modifier = Modifier,
   optionLabel: (T) -> String = { it.name },
+  helpDescription: String? = null,
   enabled: Boolean = true,
   isError: Boolean = false,
   errorMessage: String? = null
@@ -46,7 +48,44 @@ fun <T : Enum<T>> MsEnumDropdown(
         value = selectedOption?.let { optionLabel(it) } ?: "",
         onValueChange = {},
         readOnly = true,
-        label = { Text(label, style = MaterialTheme.typography.bodySmall) },
+        label = {
+          Row(
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(4.dp)
+          ) {
+            Text(label, style = MaterialTheme.typography.bodySmall)
+            if (helpDescription != null) {
+              var showHelp by remember { mutableStateOf(false) }
+              Box {
+                IconButton(
+                  onClick = { showHelp = !showHelp },
+                  modifier = Modifier.size(16.dp)
+                ) {
+                  Icon(
+                    imageVector = Icons.Default.HelpOutline,
+                    contentDescription = "Hilfe",
+                    tint = MaterialTheme.colorScheme.primary.copy(alpha = 0.6f),
+                    modifier = Modifier.size(14.dp)
+                  )
+                }
+                if (showHelp) {
+                  @OptIn(ExperimentalMaterial3Api::class)
+                  TooltipBox(
+                    positionProvider = TooltipDefaults.rememberPlainTooltipPositionProvider(),
+                    tooltip = {
+                      PlainTooltip {
+                        Text(helpDescription)
+                      }
+                    },
+                    state = rememberTooltipState(isPersistent = true)
+                  ) {
+                    // Tooltip wird durch Klick auf das Icon getriggert
+                  }
+                }
+              }
+            }
+          }
+        },
         trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
         colors = ExposedDropdownMenuDefaults.outlinedTextFieldColors(),
         modifier = Modifier

frontend/core/design-system/src/commonMain/kotlin/at/mocode/frontend/core/designsystem/components/MsFilePicker.kt

@@ -13,6 +13,7 @@ expect fun MsFilePicker(
   onFileSelected: (String) -> Unit,
   fileExtensions: List<String> = emptyList(),
   directoryOnly: Boolean = false,
+  helpDescription: String? = null,
   enabled: Boolean = true,
   modifier: Modifier = Modifier
 )

frontend/core/design-system/src/commonMain/kotlin/at/mocode/frontend/core/designsystem/components/MsStringDropdown.kt

@@ -1,10 +1,11 @@
 package at.mocode.frontend.core.designsystem.components
 
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material.icons.Icons
-import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.filled.HelpOutline
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.key.*
 import androidx.compose.ui.unit.dp
@@ -21,6 +22,7 @@ fun MsStringDropdown(
   onOptionSelected: (String) -> Unit,
   modifier: Modifier = Modifier,
   placeholder: String = "",
+  helpDescription: String? = null,
   enabled: Boolean = true,
   isError: Boolean = false,
   errorMessage: String? = null
@@ -36,7 +38,44 @@ fun MsStringDropdown(
         value = selectedOption,
         onValueChange = {},
         readOnly = true,
-        label = { Text(label, style = MaterialTheme.typography.bodySmall) },
+        label = {
+          Row(
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(4.dp)
+          ) {
+            Text(label, style = MaterialTheme.typography.bodySmall)
+            if (helpDescription != null) {
+              var showHelp by remember { mutableStateOf(false) }
+              Box {
+                IconButton(
+                  onClick = { showHelp = !showHelp },
+                  modifier = Modifier.size(16.dp)
+                ) {
+                  Icon(
+                    imageVector = Icons.Default.HelpOutline,
+                    contentDescription = "Hilfe",
+                    tint = MaterialTheme.colorScheme.primary.copy(alpha = 0.6f),
+                    modifier = Modifier.size(14.dp)
+                  )
+                }
+                if (showHelp) {
+                  @OptIn(ExperimentalMaterial3Api::class)
+                  TooltipBox(
+                    positionProvider = TooltipDefaults.rememberPlainTooltipPositionProvider(),
+                    tooltip = {
+                      PlainTooltip {
+                        Text(helpDescription)
+                      }
+                    },
+                    state = rememberTooltipState(isPersistent = true)
+                  ) {
+                    // Tooltip wird durch Klick auf das Icon getriggert
+                  }
+                }
+              }
+            }
+          }
+        },
         placeholder = { Text(placeholder, style = MaterialTheme.typography.bodySmall) },
         trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
         colors = ExposedDropdownMenuDefaults.outlinedTextFieldColors(),

frontend/core/design-system/src/commonMain/kotlin/at/mocode/frontend/core/designsystem/components/MsTextField.kt

@@ -3,6 +3,8 @@ package at.mocode.frontend.core.designsystem.components
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.HelpOutline
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
@@ -27,6 +29,7 @@ fun MsTextField(
   isError: Boolean = false,
   errorMessage: String? = null,
   helperText: String? = null,
+  helpDescription: String? = null,
   enabled: Boolean = true,
   readOnly: Boolean = false,
   singleLine: Boolean = true,
@@ -41,12 +44,47 @@ fun MsTextField(
 
   Column(modifier = modifier) {
     if (label != null) {
+      Row(
+        modifier = Modifier.padding(bottom = 4.dp, start = 4.dp),
+        verticalAlignment = androidx.compose.ui.Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(4.dp)
+      ) {
         Text(
           text = label,
           style = MaterialTheme.typography.labelMedium,
-        color = if (isError) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.onSurfaceVariant,
+          color = if (isError) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.onSurfaceVariant
-        modifier = Modifier.padding(bottom = 4.dp, start = 4.dp)
         )
+        if (helpDescription != null) {
+          var showHelp by remember { mutableStateOf(false) }
+          Box {
+            IconButton(
+              onClick = { showHelp = !showHelp },
+              modifier = Modifier.size(16.dp)
+            ) {
+              Icon(
+                imageVector = Icons.Default.HelpOutline,
+                contentDescription = "Hilfe",
+                tint = MaterialTheme.colorScheme.primary.copy(alpha = 0.6f),
+                modifier = Modifier.size(14.dp)
+              )
+            }
+            if (showHelp) {
+              @OptIn(ExperimentalMaterial3Api::class)
+              TooltipBox(
+                positionProvider = TooltipDefaults.rememberPlainTooltipPositionProvider(),
+                tooltip = {
+                  PlainTooltip {
+                    Text(helpDescription)
+                  }
+                },
+                state = rememberTooltipState(isPersistent = true)
+              ) {
+                // Tooltip wird durch Klick auf das Icon getriggert
+              }
+            }
+          }
+        }
+      }
     }
 
     OutlinedTextField(

frontend/core/design-system/src/jvmMain/kotlin/at/mocode/frontend/core/designsystem/components/MsFilePicker.jvm.kt

@@ -20,6 +20,7 @@ actual fun MsFilePicker(
   onFileSelected: (String) -> Unit,
   fileExtensions: List<String>,
   directoryOnly: Boolean,
+  helpDescription: String?,
   enabled: Boolean,
   modifier: Modifier
 ) {
@@ -32,6 +33,7 @@ actual fun MsFilePicker(
       onValueChange = { },
       readOnly = true,
       label = label,
+      helpDescription = helpDescription,
       placeholder = if (directoryOnly) "Verzeichnis wählen..." else "Datei wählen...",
       modifier = Modifier.weight(1f),
       enabled = enabled,

frontend/core/design-system/src/wasmJsMain/kotlin/at/mocode/frontend/core/designsystem/components/MsFilePicker.wasmJs.kt

@@ -10,6 +10,7 @@ actual fun MsFilePicker(
   onFileSelected: (String) -> Unit,
   fileExtensions: List<String>,
   directoryOnly: Boolean,
+  helpDescription: String?,
   enabled: Boolean,
   modifier: Modifier
 ) {

frontend/features/device-initialization/src/commonMain/kotlin/at/mocode/frontend/features/device/initialization/domain/model/DeviceInitializationSettings.kt

@@ -27,6 +27,7 @@ data class ExpectedClient(
 @Serializable
 data class DeviceInitializationSettings(
   val deviceName: String = "",
+  val networkInterface: String = "",
   val sharedKey: String = "",
   val backupPath: String = "",
   val networkRole: NetworkRole = NetworkRole.CLIENT,

frontend/features/device-initialization/src/commonMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationScreen.kt

@@ -2,6 +2,8 @@
 
 package at.mocode.frontend.features.device.initialization.presentation
 
+import androidx.compose.animation.core.*
+import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
@@ -10,6 +12,7 @@ import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.automirrored.filled.ArrowForward
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.NetworkCheck
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
@@ -19,12 +22,65 @@ import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.FocusRequester.Companion.FocusRequesterFactory.component1
 import androidx.compose.ui.focus.FocusRequester.Companion.FocusRequesterFactory.component2
 import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.drawscope.Stroke
 import androidx.compose.ui.input.key.*
 import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import at.mocode.frontend.features.device.initialization.domain.DeviceInitializationValidator
 
+@Composable
+private fun DiscoveryRadar() {
+  val infiniteTransition = rememberInfiniteTransition()
+  val radius by infiniteTransition.animateFloat(
+    initialValue = 0f,
+    targetValue = 40f,
+    animationSpec = infiniteRepeatable(
+      animation = tween(2000, easing = LinearEasing),
+      repeatMode = RepeatMode.Restart
+    )
+  )
+  val alpha by infiniteTransition.animateFloat(
+    initialValue = 1f,
+    targetValue = 0f,
+    animationSpec = infiniteRepeatable(
+      animation = tween(2000, easing = LinearEasing),
+      repeatMode = RepeatMode.Restart
+    )
+  )
+
+  val color = MaterialTheme.colorScheme.primary
+
+  Box(
+    modifier = Modifier.size(80.dp),
+    contentAlignment = androidx.compose.ui.Alignment.Center
+  ) {
+    Canvas(modifier = Modifier.fillMaxSize()) {
+      drawCircle(
+        color = color,
+        radius = radius.dp.toPx(),
+        center = Offset(size.width / 2, size.height / 2),
+        style = Stroke(width = 2.dp.toPx()),
+        alpha = alpha
+      )
+      drawCircle(
+        color = color,
+        radius = (radius * 0.5f).dp.toPx(),
+        center = Offset(size.width / 2, size.height / 2),
+        style = Stroke(width = 1.dp.toPx()),
+        alpha = alpha * 0.5f
+      )
+    }
+    Icon(
+      imageVector = Icons.Default.NetworkCheck,
+      contentDescription = null,
+      tint = color,
+      modifier = Modifier.size(24.dp)
+    )
+  }
+}
+
 @Composable
 fun DeviceInitializationScreen(
   viewModel: DeviceInitializationViewModel
@@ -67,6 +123,20 @@ fun DeviceInitializationScreen(
               style = MaterialTheme.typography.bodySmall
             )
 
+            Row(
+              modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp),
+              verticalAlignment = androidx.compose.ui.Alignment.CenterVertically,
+              horizontalArrangement = Arrangement.Center
+            ) {
+              DiscoveryRadar()
+              Spacer(modifier = Modifier.width(16.dp))
+              Text(
+                "Suche nach Geräten im Netzwerk...",
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+              )
+            }
+
             NetworkRoleSelector(
               selectedRole = uiState.settings.networkRole,
               onRoleSelected = {

frontend/features/device-initialization/src/jvmMain/kotlin/at/mocode/frontend/features/device/initialization/data/local/DeviceInitializationSettingsManager.jvm.kt

@@ -8,7 +8,17 @@ import kotlinx.serialization.json.Json
 import java.io.File
 
 actual object DeviceInitializationSettingsManager {
-  private val settingsFile = File("settings.json")
+  private val settingsFile: File by lazy {
+    val os = System.getProperty("os.name").lowercase()
+    val appName = "Meldestelle"
+    val baseDir = when {
+      os.contains("win") -> File(System.getenv("APPDATA"), appName)
+      os.contains("mac") -> File(System.getProperty("user.home"), "Library/Application Support/$appName")
+      else -> File(System.getProperty("user.home"), ".config/$appName")
+    }
+    if (!baseDir.exists()) baseDir.mkdirs()
+    File(baseDir, "settings.json")
+  }
   private val json = Json { prettyPrint = true; ignoreUnknownKeys = true }
 
   actual fun saveSettings(settings: DeviceInitializationSettings) {

frontend/features/device-initialization/src/jvmMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationConfig.jvm.kt

@@ -34,6 +34,7 @@ import at.mocode.frontend.core.designsystem.components.MsStringDropdown
 import at.mocode.frontend.core.designsystem.components.MsTextField
 import at.mocode.frontend.features.device.initialization.domain.DeviceInitializationValidator
 import at.mocode.frontend.features.device.initialization.domain.model.NetworkRole
+import java.net.NetworkInterface
 import javax.print.PrintServiceLookup
 
 @Composable
@@ -57,6 +58,7 @@ actual fun DeviceInitializationConfig(
         value = settings.deviceName,
         onValueChange = { viewModel.updateSettings { s -> s.copy(deviceName = it) } },
         label = "Gerätename",
+        helpDescription = "Ein eindeutiger Name für diesen PC (z.B. 'Richter-Springplatz'). Dies hilft dem Master, die Datenquellen zuzuordnen.",
         placeholder = "z.B. Meldestelle-PC-1",
         isError = settings.deviceName.isNotEmpty() && !DeviceInitializationValidator.isNameValid(settings.deviceName),
         errorMessage = "Mindestens ${DeviceInitializationValidator.MIN_NAME_LENGTH} Zeichen erforderlich.",
@@ -66,11 +68,28 @@ actual fun DeviceInitializationConfig(
         enabled = !uiState.isLocked
       )
 
+      val interfaces = remember {
+        NetworkInterface.getNetworkInterfaces().toList()
+          .filter { it.isUp && !it.isLoopback && it.inetAddresses.hasMoreElements() }
+          .map { "${it.displayName} (${it.inetAddresses.nextElement().hostAddress})" }
+      }
+
+      MsStringDropdown(
+        label = "Netzwerk-Interface",
+        helpDescription = "Wähle das Netzwerk-Interface aus, über das die App kommunizieren soll (z.B. LAN für das Turnier-Netzwerk).",
+        options = interfaces,
+        selectedOption = settings.networkInterface,
+        onOptionSelected = { viewModel.updateSettings { s -> s.copy(networkInterface = it) } },
+        placeholder = "Interface wählen...",
+        enabled = !uiState.isLocked
+      )
+
       var passwordVisible by remember { mutableStateOf(false) }
       MsTextField(
         value = settings.sharedKey,
         onValueChange = { viewModel.updateSettings { s -> s.copy(sharedKey = it) } },
         label = "Sicherheitsschlüssel (Sync-Key)",
+        helpDescription = "Das 'Turnier-Passwort'. Nur Geräte mit exakt diesem Schlüssel können Daten austauschen. Wichtig für die Verschlüsselung (DSGVO)!",
         placeholder = "Mindestens 8 Zeichen",
         isError = settings.sharedKey.isNotEmpty() && !DeviceInitializationValidator.isKeyValid(settings.sharedKey),
         errorMessage = "Mindestens ${DeviceInitializationValidator.MIN_KEY_LENGTH} Zeichen erforderlich.",
@@ -87,6 +106,7 @@ actual fun DeviceInitializationConfig(
 
       MsFilePicker(
         label = "Backup-Verzeichnis (Pfad)",
+        helpDescription = "Wähle hier deinen USB-Stick oder einen lokalen Ordner aus. Die App speichert hier laufend Sicherheitskopien für den Notfall (Plan-USB).",
         selectedPath = settings.backupPath,
         onFileSelected = { selectedPath ->
           viewModel.updateSettings { s -> s.copy(backupPath = selectedPath) }
@@ -102,6 +122,7 @@ actual fun DeviceInitializationConfig(
 
       MsStringDropdown(
         label = "Standard-Drucker",
+        helpDescription = "Der Drucker, der standardmäßig für Protokolle und Listen verwendet wird. Kann später jederzeit geändert werden.",
         options = printers,
         selectedOption = settings.defaultPrinter,
         onOptionSelected = { viewModel.updateSettings { s -> s.copy(defaultPrinter = it) } },