Fix local favorite count not updating

app/src/main/java/com/hippo/ehviewer/EhDB.kt

@@ -33,6 +33,7 @@ import com.hippo.ehviewer.dao.LocalFavoriteInfo
 import com.hippo.ehviewer.dao.QuickSearch
 import com.hippo.ehviewer.download.DownloadManager
 import com.hippo.ehviewer.util.sendTo
+import kotlinx.coroutines.flow.Flow
 import splitties.arch.room.roomDb
 
 object EhDB {
@@ -214,6 +215,9 @@ object EhDB {
     val localFavLazyList: PagingSource<Int, LocalFavoriteInfo>
         get() = db.localFavoritesDao().listLazy()
 
+    val localFavCount: Flow<Int>
+        get() = db.localFavoritesDao().count()
+
     fun searchLocalFav(keyword: String) = db.localFavoritesDao().listLazy("%$keyword%")
 
     suspend fun putHistoryInfo(galleryInfo: GalleryInfo) {

app/src/main/java/com/hippo/ehviewer/dao/LocalFavoritesDao.kt

@@ -4,9 +4,13 @@ import androidx.paging.PagingSource
 import androidx.room.Dao
 import androidx.room.Insert
 import androidx.room.Query
+import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface LocalFavoritesDao {
+    @Query("SELECT COUNT(*) FROM LOCAL_FAVORITES")
+    fun count(): Flow<Int>
+
     @Query("SELECT * FROM LOCAL_FAVORITES ORDER BY TIME DESC")
     suspend fun list(): List<LocalFavoriteInfo>
 

app/src/main/java/com/hippo/ehviewer/ui/scene/FavoritesScene.kt

@@ -29,7 +29,9 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.currentRecomposeScope
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.ComposeView
 import androidx.compose.ui.res.stringResource
@@ -143,6 +145,7 @@ class VMStorage : ViewModel() {
         }
     }.flow.cachedIn(viewModelScope)
     fun dataflow() = if (urlBuilder.favCat == -2) localFavDataFlow else cloudDataFlow
+    val localFavCount = EhDB.localFavCount
 }
 
 class FavoritesScene : SearchBarScene() {
@@ -413,6 +416,7 @@ class FavoritesScene : SearchBarScene() {
         savedInstanceState: Bundle?,
     ) = ComposeView(inflater.context).apply {
         setMD3Content {
+            val localFavCount by vm.localFavCount.collectAsState(0)
             ElevatedCard {
                 TopAppBar(title = { Text(text = stringResource(id = R.string.collections)) })
                 val scope = currentRecomposeScope
@@ -422,7 +426,7 @@ class FavoritesScene : SearchBarScene() {
                     }
                 }
                 val faves = arrayOf(
-                    stringResource(id = R.string.local_favorites) to Settings.favLocalCount,
+                    stringResource(id = R.string.local_favorites) to localFavCount,
                     stringResource(id = R.string.cloud_favorites) to Settings.favCloudCount,
                     *Settings.favCat.zip(Settings.favCount.toTypedArray()).toTypedArray(),
                 )