From c56bb4e2a685436f658b554651a77a010c33e34e Mon Sep 17 00:00:00 2001
From: OneWay <info@oneway.asia>
Date: Sun, 4 Oct 2026 12:09:00 +0000
Subject: [PATCH] fix(download): verify payload freshness before restoring the
 update state

On restart the update-available state was restored purely from the
saved date. Also compare the installed payload file names against
dated sources, and re-check when they no longer match.
---
 .../research/ui/settings/SettingsViewModel.kt | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/example/research/ui/settings/SettingsViewModel.kt b/app/src/main/java/com/example/research/ui/settings/SettingsViewModel.kt
index f557125..893444f 100644
--- a/app/src/main/java/com/example/research/ui/settings/SettingsViewModel.kt
+++ b/app/src/main/java/com/example/research/ui/settings/SettingsViewModel.kt
@@ -519,6 +519,25 @@ class SettingsViewModel(
     ): List<DictionarySource> =
         DictionarySourceFileMatcher.installedSources(sources, dictionaries)
 
+    private suspend fun installedDictionariesAreCurrent(): Boolean {
+        val sources = preferencesManager.dictionarySources.first()
+        val dictionaries = localDictionaryRepository.dictionaries.first()
+        val datedEnabledSources = installedEnabledSources(sources, dictionaries)
+            .filter { DictionarySource.hasDatePlaceholder(it.urlTemplate) }
+        if (datedEnabledSources.isEmpty()) return true
+        val fileNames = localDictionaryRepository.listDictionaryPayloadFileNames(
+            preferencesManager.dictionaryPath
+        ) ?: return true
+        val today = DateUtils.getCurrentDateString()
+        return datedEnabledSources.all { source ->
+            val baseName = DictionarySource.extractFileName(source.urlTemplate, today)
+                .removeSuffix(".gz")
+                .removeSuffix(".dsl")
+                .removeSuffix(".dz")
+            fileNames.any { it.startsWith(baseName) }
+        }
+    }
+
     private fun cancelDownload() {
         // Cancel the ViewModel-side scan job so no further status recomputes
         localDictionaryRepository.cancelIndexing()
@@ -579,7 +598,10 @@ class SettingsViewModel(
                         "NeedsUpdate" -> DictionaryStatus.NeedsUpdate
                         else -> null
                     }
-                    if (restoredStatus != null && savedStatusDate == DateUtils.getCurrentDateString()) {
+                    if (restoredStatus != null &&
+                        savedStatusDate == DateUtils.getCurrentDateString() &&
+                        withContext(Dispatchers.IO) { installedDictionariesAreCurrent() }
+                    ) {
                         dictionaryStatus.value = restoredStatus
                     } else {
                         dictionaryStatus.value = DictionaryStatus.Checking