[optimize] Optimize HomeScreen

app/src/main/java/com/acitelight/aether/service/RecentManager.kt

@@ -1,6 +1,7 @@
 package com.acitelight.aether.service
 
 import android.content.Context
+import androidx.compose.runtime.mutableStateListOf
 import com.acitelight.aether.model.Video
 import com.acitelight.aether.model.VideoQueryIndex
 import kotlinx.coroutines.Dispatchers
@@ -50,11 +51,15 @@ object RecentManager
         try{
             val r = Json.decodeFromString<List<VideoQueryIndex>>(content)
 
-            val vn = r.map{
-                MediaManager.queryVideo(it.klass, it.id)
-            }.filter { it != null }
+            recent.clear()
+
+            for(it in r)
+            {
+                val v = MediaManager.queryVideo(it.klass, it.id)
+                if(v != null)
+                    recent.add(recent.size, v)
+            }
 
-            _recent.value = vn.map { it!! }
             return r
         }catch (e: Exception)
         {
@@ -74,6 +79,7 @@ object RecentManager
             {
                 val temp = o[0]
                 val index = o.indexOf(video)
+                recent.removeAt(index)
                 o[0] = o[index]
                 o[index] = temp
             }
@@ -85,15 +91,10 @@ object RecentManager
             if(o.size >= 21)
                 o.removeAt(o.size - 1)
 
-            val vn = o.map{
-                MediaManager.queryVideo(it.klass, it.id)
-            }.filter { it != null }
-            _recent.value = vn.map { it!! }
-
+            recent.add(0, MediaManager.queryVideo(video.klass, video.id)!!)
             writeFile(context, "recent.json", Json.encodeToString(o))
         }
     }
 
-    private val _recent = MutableStateFlow<List<Video>>(emptyList())
-    val recent: StateFlow<List<Video>> = _recent
+    val recent = mutableStateListOf<Video>()
 }

app/src/main/java/com/acitelight/aether/view/HomeScreen.kt

@@ -34,7 +34,6 @@ fun HomeScreen(homeScreenViewModel: HomeScreenViewModel = viewModel(), navContro
 {
     if(Global.loggedIn)
         homeScreenViewModel.Init()
-    val recent by RecentManager.recent.collectAsState()
 
     LazyColumn(modifier = Modifier.fillMaxWidth())
     {
@@ -49,14 +48,14 @@ fun HomeScreen(homeScreenViewModel: HomeScreenViewModel = viewModel(), navContro
 
                 HorizontalDivider(Modifier.padding(8.dp), 2.dp, DividerDefaults.color)
 
-                for(i in recent)
+                for(i in RecentManager.recent)
                 {
                     MiniVideoCard(
                         modifier = Modifier
                             .padding(horizontal = 12.dp),
                         i,
                         {
-                            Global.sameClassVideos = recent
+                            Global.sameClassVideos = RecentManager.recent
                             val route = "video_player_route/${ "${i.klass}/${i.id}".toHex() }"
                             navController.navigate(route)
                         })