From fdc016c78653585e1f9230ef92f74ab2574d34fc Mon Sep 17 00:00:00 2001
From: Jens Reinemann <reinemann@euris.de>
Date: Sun, 17 May 2026 20:27:49 +0200
Subject: [PATCH] =?UTF-8?q?fix:=20Differenzierte=20Sync-Aktivit=C3=A4tsmel?=
 =?UTF-8?q?dungen?=
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- Neues SyncActivityMessage.CheckingForChanges 'Prüfe auf Änderungen…'
  wird beim initialen Catch-up nach Connect angezeigt (statt dem
  irreführenden 'Empfange Inventar-Update…')
- Neues SyncActivityMessage.NoChanges 'Keine Änderungen'
  wird angezeigt wenn der initiale Sync keine Daten zurückliefert
- Echter Server-Push (InventoryUpdated/FullSyncRequired) zeigt weiterhin
  'Empfange Inventar-Update…' → jede echte Kommunikation bleibt sichtbar
---
 .../app/ui/settings/SettingsViewModel.kt       | 18 ++++++++++++++----
 .../app/ui/settings/SyncActivityMessage.kt     |  8 ++++++++
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/de/bollwerk/app/ui/settings/SettingsViewModel.kt b/app/src/main/java/de/bollwerk/app/ui/settings/SettingsViewModel.kt
index 523c543..fc31ac9 100644
--- a/app/src/main/java/de/bollwerk/app/ui/settings/SettingsViewModel.kt
+++ b/app/src/main/java/de/bollwerk/app/ui/settings/SettingsViewModel.kt
@@ -92,7 +92,7 @@ internal class SettingsViewModel @Inject constructor(
                         showActivity(SyncActivityMessage.Error(event.message))
                     }
                     is WebSocketEvent.Connected -> {
-                        pullSync(fullSync = false, silent = true)
+                        pullSync(fullSync = false, isInitialConnect = true)
                     }
                     else -> {}
                 }
@@ -432,10 +432,13 @@ internal class SettingsViewModel @Inject constructor(
         }
     }
 
-    fun pullSync(fullSync: Boolean = false, silent: Boolean = false) {
+    fun pullSync(fullSync: Boolean = false, isInitialConnect: Boolean = false) {
         viewModelScope.launch {
             _uiState.update { it.copy(isSyncing = true) }
-            if (!silent) showActivity(SyncActivityMessage.ReceivingUpdate)
+            showActivity(
+                if (isInitialConnect) SyncActivityMessage.CheckingForChanges
+                else SyncActivityMessage.ReceivingUpdate
+            )
             try {
                 val since = if (fullSync) null else settingsRepository.getStringOrNull(StringKey.SyncLastTimestamp)?.toLongOrNull()
                 val result = syncService.downloadInventory(since)
@@ -452,7 +455,14 @@ internal class SettingsViewModel @Inject constructor(
                                         lastSyncTime = formatTimestamp(now)
                                     )
                                 }
-                                showActivity(SyncActivityMessage.InventorySynced)
+                                val hasChanges = inventoryDto.items.isNotEmpty()
+                                    || inventoryDto.deletedItemIds.isNotEmpty()
+                                    || inventoryDto.categories.isNotEmpty()
+                                    || inventoryDto.locations.isNotEmpty()
+                                showActivity(
+                                    if (isInitialConnect && !hasChanges) SyncActivityMessage.NoChanges
+                                    else SyncActivityMessage.InventorySynced
+                                )
                             },
                             onFailure = { e ->
                                 _uiState.update { it.copy(isSyncing = false) }
diff --git a/app/src/main/java/de/bollwerk/app/ui/settings/SyncActivityMessage.kt b/app/src/main/java/de/bollwerk/app/ui/settings/SyncActivityMessage.kt
index f0be3a9..ac11fb2 100644
--- a/app/src/main/java/de/bollwerk/app/ui/settings/SyncActivityMessage.kt
+++ b/app/src/main/java/de/bollwerk/app/ui/settings/SyncActivityMessage.kt
@@ -8,6 +8,14 @@ internal sealed interface SyncActivityMessage {
         override val text = "Empfange Inventar-Update…"
     }
 
+    data object CheckingForChanges : SyncActivityMessage {
+        override val text = "Prüfe auf Änderungen…"
+    }
+
+    data object NoChanges : SyncActivityMessage {
+        override val text = "Keine Änderungen"
+    }
+
     data object SendingChange : SyncActivityMessage {
         override val text = "Sende Änderung…"
     }