feat(veranstaltung): ZNS-Import-Assistent hinzugefügt und Workflow verbessert

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

docs/99_Journal/2026-04-16_ZNS-First-Wizard-Strategy.md

@@ -44,6 +44,12 @@ Um die Wartezeit beim ersten Import von ~20 Minuten auf wenige Sekunden/Minuten
 2. **Wizard-Implementation:** Umsetzung des 3-Schritt-Flows im `VeranstaltungNeuScreen.kt`.
 3. **API-Erweiterung:** `ZnsImportService` um den `mode=LIGHT` Parameter erweitern.
 
+🧹 **[Curator]**: Journal-Eintrag für Session am 16. April 2026 abgeschlossen.
+
+* **Status**: Implementierung des ZNS-First Wizards in `VeranstaltungKonfigV2` abgeschlossen.
+* **Resultat**: Performance-Steigerung durch ZNS-Light Integration direkt im ersten Wizard-Schritt.
+* **Technik**: Entkopplung via `ZnsImportProvider` Interface erfolgreich angewendet.
+
 ---
-🧹 **[Curator]**: Dieses Dokument dient als Übergabeprotokoll für die nächste Session. Alle fachlichen und technischen
-Parameter sind hiermit fixiert.
+🧹 **[Curator]**: Dieses Dokument wurde um die finalen Implementierungsdetails ergänzt. Alle fachlichen und technischen
+Parameter sind hiermit fixiert und umgesetzt.

frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/desktop/v2/VeranstaltungScreens.kt

@@ -21,10 +21,14 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import at.mocode.frontend.core.domain.zns.ZnsImportProvider
+import org.koin.compose.koinInject
 import java.time.Instant
 import java.time.LocalDate
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
+import javax.swing.JFileChooser
+import javax.swing.filechooser.FileNameExtensionFilter
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -306,6 +310,9 @@ fun VeranstaltungKonfigV2(
   onSaved: (Long, Long) -> Unit, // eventId, veranstalterId
   onVeranstalterCreated: (Long) -> Unit = {}, // Neuer Flow: nach Vereinsanlage ins Profil
 ) {
+  val znsImporter: ZnsImportProvider = koinInject()
+  val znsState = znsImporter.state
+
   DesktopThemeV2 {
     var currentStep by remember { mutableStateOf(if (veranstalterId == 0L) 1 else 2) }
 
@@ -417,73 +424,98 @@ fun VeranstaltungKonfigV2(
       Box(Modifier.weight(1f).fillMaxWidth()) {
         when (currentStep) {
           1 -> {
-            // --- SCHRITT 1: Veranstalterwahl ---
-            Column(verticalArrangement = Arrangement.spacedBy(12.dp)) {
-              var search by remember { mutableStateOf("") }
-              val filteredVereine = remember(search) {
-                StoreV2.vereine.filter {
-                  it.name.contains(search, ignoreCase = true) || (it.ort?.contains(search, ignoreCase = true) ?: false)
-                }
-              }
-
-              Text("Für welchen Verein wird die Veranstaltung angelegt?", style = MaterialTheme.typography.titleMedium)
-
-              OutlinedTextField(
-                value = search,
-                onValueChange = { search = it },
-                label = { Text("Veranstalter suchen...") },
-                modifier = Modifier.fillMaxWidth(),
-                leadingIcon = { Icon(Icons.Default.Search, contentDescription = null) }
+            // --- SCHRITT 1: ZNS-First Daten-Akquise ---
+            Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
+              Text(
+                "Daten-Akquise & Veranstalter",
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.Bold
               )
 
-              LazyColumn(
-                modifier = Modifier.weight(1f).fillMaxWidth(),
-                verticalArrangement = Arrangement.spacedBy(8.dp)
-              ) {
-                items(filteredVereine) { verein ->
-                  val isSelected = selectedVereinId == verein.id
-                  Surface(
-                    onClick = { selectedVereinId = verein.id },
-                    shape = MaterialTheme.shapes.medium,
-                    color = if (isSelected) MaterialTheme.colorScheme.primaryContainer else MaterialTheme.colorScheme.surface,
-                    border = if (isSelected) null else androidx.compose.foundation.BorderStroke(
-                      1.dp,
-                      MaterialTheme.colorScheme.outlineVariant
-                    )
-                  ) {
-                    Row(
-                      Modifier.padding(16.dp).fillMaxWidth(),
-                      verticalAlignment = Alignment.CenterVertically
+              // 1. ZNS Import Bereich (Prominent)
+              ZnsImportWizardSection(
+                state = znsState,
+                onFileSelect = { path -> znsImporter.onFileSelected(path) },
+                onStartImport = { znsImporter.startImport(mode = "LIGHT") },
+                onReset = { znsImporter.reset() }
+              )
+
+              HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+              // 2. Bestehende Veranstalter (Kompakt)
+              Column(verticalArrangement = Arrangement.spacedBy(8.dp), modifier = Modifier.weight(1f)) {
+                var search by remember { mutableStateOf("") }
+                val filteredVereine = remember(search) {
+                  StoreV2.vereine.filter {
+                    it.name.contains(search, ignoreCase = true) || (it.ort?.contains(search, ignoreCase = true)
+                      ?: false)
+                  }
+                }
+
+                Text("Oder bestehenden Veranstalter wählen:", style = MaterialTheme.typography.titleSmall)
+
+                OutlinedTextField(
+                  value = search,
+                  onValueChange = { search = it },
+                  label = { Text("Veranstalter suchen...") },
+                  modifier = Modifier.fillMaxWidth(),
+                  leadingIcon = { Icon(Icons.Default.Search, contentDescription = null) },
+                  singleLine = true
+                )
+
+                LazyColumn(
+                  modifier = Modifier.fillMaxWidth(),
+                  verticalArrangement = Arrangement.spacedBy(4.dp)
+                ) {
+                  items(filteredVereine) { verein ->
+                    val isSelected = selectedVereinId == verein.id
+                    Surface(
+                      onClick = { selectedVereinId = verein.id },
+                      shape = MaterialTheme.shapes.small,
+                      color = if (isSelected) MaterialTheme.colorScheme.primaryContainer else MaterialTheme.colorScheme.surface,
+                      border = if (isSelected) null else androidx.compose.foundation.BorderStroke(
+                        1.dp,
+                        MaterialTheme.colorScheme.outlineVariant
+                      )
                     ) {
-                      Column(Modifier.weight(1f)) {
-                        Text(verein.name, fontWeight = FontWeight.Bold)
-                        Text("${verein.ort ?: ""} | ${verein.oepsNummer}", style = MaterialTheme.typography.bodySmall)
+                      Row(
+                        Modifier.padding(horizontal = 12.dp, vertical = 8.dp).fillMaxWidth(),
+                        verticalAlignment = Alignment.CenterVertically
+                      ) {
+                        Column(Modifier.weight(1f)) {
+                          Text(verein.name, style = MaterialTheme.typography.bodyMedium, fontWeight = FontWeight.Bold)
+                          Text(
+                            "${verein.ort ?: ""} | ${verein.oepsNummer}",
+                            style = MaterialTheme.typography.labelSmall
+                          )
+                        }
+                        if (isSelected) Icon(
+                          Icons.AutoMirrored.Filled.KeyboardArrowRight,
+                          contentDescription = null,
+                          modifier = Modifier.size(16.dp)
+                        )
                       }
-                      if (isSelected) Icon(Icons.AutoMirrored.Filled.KeyboardArrowRight, contentDescription = null)
                     }
                   }
                 }
               }
 
-              HorizontalDivider()
-
-              if (!showVereinNeu) {
-                OutlinedButton(
-                  onClick = { showVereinNeu = true },
-                  modifier = Modifier.fillMaxWidth()
-                ) {
-                  Icon(Icons.Default.Add, contentDescription = null)
-                  Spacer(Modifier.width(8.dp))
-                  Text("Neuen Veranstalter / Verein anlegen")
-                }
-              } else {
-                VeranstalterAnlegenWizard(
-                  onCancel = { showVereinNeu = false },
-                  onVereinCreated = { newId ->
-                    // Neuer gewünschter Flow: nach Schritt 2 ins Veranstalter‑Profil wechseln
-                    showVereinNeu = false
-                    onVeranstalterCreated(newId)
-                  }
+              if (showVereinNeu) {
+                AlertDialog(
+                  onDismissRequest = { showVereinNeu = false },
+                  title = { Text("Manueller Eintrag") },
+                  text = {
+                    Box(Modifier.heightIn(max = 500.dp)) {
+                      VeranstalterAnlegenWizard(
+                        onCancel = { showVereinNeu = false },
+                        onVereinCreated = { newId ->
+                          showVereinNeu = false
+                          onVeranstalterCreated(newId)
+                        }
+                      )
+                    }
+                  },
+                  confirmButton = {}
                 )
               }
             }
@@ -1539,3 +1571,154 @@ private fun Step3Branding(
     }
   }
 }
+
+@Composable
+fun ZnsImportWizardSection(
+  state: at.mocode.frontend.core.domain.zns.ZnsImportState,
+  onFileSelect: (String) -> Unit,
+  onStartImport: () -> Unit,
+  onReset: () -> Unit
+) {
+  Card(
+    modifier = Modifier.fillMaxWidth(),
+    colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.primaryContainer.copy(alpha = 0.4f)),
+    border = androidx.compose.foundation.BorderStroke(1.dp, MaterialTheme.colorScheme.primary.copy(alpha = 0.2f))
+  ) {
+    Column(modifier = Modifier.padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
+      Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+        Icon(Icons.Default.CloudUpload, contentDescription = null, tint = MaterialTheme.colorScheme.primary)
+        Text("ZNS-Stammdaten Import (ZIP)", style = MaterialTheme.typography.titleMedium, fontWeight = FontWeight.Bold)
+        Spacer(Modifier.weight(1f))
+        if (state.isFinished || state.errorMessage != null) {
+          TextButton(onClick = onReset) {
+            Icon(Icons.Default.Refresh, contentDescription = null, modifier = Modifier.size(18.dp))
+            Spacer(Modifier.width(4.dp))
+            Text("Neu laden")
+          }
+        }
+      }
+
+      if (state.jobId == null) {
+        // Datei-Auswahl Modus
+        Row(
+          verticalAlignment = Alignment.CenterVertically,
+          horizontalArrangement = Arrangement.spacedBy(8.dp),
+          modifier = Modifier.fillMaxWidth()
+        ) {
+          OutlinedTextField(
+            value = state.selectedFilePath ?: "",
+            onValueChange = {},
+            readOnly = true,
+            placeholder = { Text("ZNS.zip auswählen...") },
+            modifier = Modifier.weight(1f),
+            singleLine = true,
+            textStyle = MaterialTheme.typography.bodySmall
+          )
+          Button(
+            onClick = {
+              val path = pickZipFile()
+              if (path != null) onFileSelect(path)
+            },
+            enabled = !state.isUploading
+          ) {
+            Icon(Icons.Default.FolderOpen, contentDescription = null, modifier = Modifier.size(18.dp))
+            Spacer(Modifier.width(8.dp))
+            Text("Durchsuchen")
+          }
+        }
+
+        Button(
+          onClick = onStartImport,
+          enabled = state.selectedFilePath != null && !state.isUploading,
+          modifier = Modifier.fillMaxWidth()
+        ) {
+          if (state.isUploading) {
+            CircularProgressIndicator(modifier = Modifier.size(18.dp), strokeWidth = 2.dp)
+          } else {
+            Icon(Icons.Default.Bolt, contentDescription = null, modifier = Modifier.size(18.dp))
+            Spacer(Modifier.width(8.dp))
+            Text("Schnell-Import starten (LIGHT)")
+          }
+        }
+      } else {
+        // Progress Modus
+        Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+          Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+          ) {
+            Text(state.jobStatus ?: "Verarbeite...", style = MaterialTheme.typography.labelMedium)
+            Text("${state.progress}%", style = MaterialTheme.typography.labelMedium)
+          }
+
+          LinearProgressIndicator(
+            progress = { state.progress / 100f },
+            modifier = Modifier.fillMaxWidth().height(8.dp).clip(RoundedCornerShape(4.dp)),
+          )
+
+          Text(
+            state.progressDetail.ifBlank { "Warte auf Server..." },
+            style = MaterialTheme.typography.labelSmall,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+          )
+
+          if (state.isFinished && state.jobStatus == "ABGESCHLOSSEN") {
+            Row(
+              verticalAlignment = Alignment.CenterVertically,
+              horizontalArrangement = Arrangement.spacedBy(4.dp),
+              modifier = Modifier.padding(top = 4.dp)
+            ) {
+              Icon(
+                Icons.Default.CheckCircle,
+                contentDescription = null,
+                tint = Color(0xFF2E7D32),
+                modifier = Modifier.size(16.dp)
+              )
+              Text(
+                "Import erfolgreich! Vereine wurden aktualisiert.",
+                style = MaterialTheme.typography.labelSmall,
+                color = Color(0xFF2E7D32)
+              )
+            }
+          }
+        }
+      }
+
+      if (state.errorMessage != null) {
+        Surface(
+          color = MaterialTheme.colorScheme.errorContainer,
+          shape = RoundedCornerShape(4.dp),
+          modifier = Modifier.fillMaxWidth()
+        ) {
+          Row(
+            Modifier.padding(8.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(8.dp)
+          ) {
+            Icon(
+              Icons.Default.Error,
+              contentDescription = null,
+              tint = MaterialTheme.colorScheme.error,
+              modifier = Modifier.size(16.dp)
+            )
+            Text(
+              state.errorMessage ?: "Fehler",
+              style = MaterialTheme.typography.labelSmall,
+              color = MaterialTheme.colorScheme.onErrorContainer
+            )
+          }
+        }
+      }
+    }
+  }
+}
+
+private fun pickZipFile(): String? {
+  val chooser = JFileChooser()
+  chooser.dialogTitle = "ZNS.zip auswählen"
+  chooser.fileFilter = FileNameExtensionFilter("ZIP-Archiv (*.zip)", "zip")
+  chooser.isAcceptAllFileFilterUsed = false
+  val result = chooser.showOpenDialog(null)
+  return if (result == JFileChooser.APPROVE_OPTION) chooser.selectedFile.absolutePath else null
+}