feat: Preload bundle avatars on startup to eliminate first-open delay

Author: MarcaDian

app/src/main/java/app/morphe/manager/ManagerApplication.kt

@@ -11,8 +11,12 @@ import app.morphe.manager.di.*
 import app.morphe.manager.domain.manager.PreferencesManager
 import app.morphe.manager.domain.repository.PatchBundleRepository
 import app.morphe.manager.domain.repository.PatchBundleRepository.Companion.DEFAULT_SOURCE_UID
+import app.morphe.manager.domain.bundles.PatchBundleSource.Extensions.bundleAvatarUrl
+import app.morphe.manager.domain.bundles.PatchBundleSource.Extensions.githubAvatarUrl
+import app.morphe.manager.domain.bundles.PatchBundleSource.Extensions.gitlabAvatarUrl
 import app.morphe.manager.util.UpdateNotificationManager
 import app.morphe.manager.util.applyAppLanguage
+import app.morphe.manager.util.loadRemoteAvatar
 import app.morphe.manager.util.readLanguageFromPrefs
 import app.morphe.manager.util.saveLanguageToPrefs
 import app.morphe.manager.util.syncFcmTopics
@@ -25,6 +29,7 @@ import coil.ImageLoader
 import com.topjohnwu.superuser.Shell
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.launch
 import me.zhanghai.android.appiconloader.coil.AppIconFetcher
 import me.zhanghai.android.appiconloader.coil.AppIconKeyer
@@ -124,6 +129,23 @@ class ManagerApplication : Application() {
             }
         }
 
+        // Preload bundle avatar images into AvatarCache while the user hasn't opened the sheet yet.
+        // Suspends until sources are ready, then fetches all URLs in parallel on IO threads.
+        scope.launch(Dispatchers.IO) {
+            patchBundleRepository.sources.first { it.isNotEmpty() }.forEach { bundle ->
+                launch {
+                    val primary = bundle.bundleAvatarUrl ?: bundle.githubAvatarUrl ?: bundle.gitlabAvatarUrl
+                    val fallback = when {
+                        bundle.bundleAvatarUrl != null -> bundle.githubAvatarUrl ?: bundle.gitlabAvatarUrl
+                        bundle.githubAvatarUrl != null -> bundle.gitlabAvatarUrl
+                        else -> null
+                    }
+                    primary?.let { loadRemoteAvatar(it) }
+                    fallback?.let { loadRemoteAvatar(it) }
+                }
+            }
+        }
+
         // Clean temp dir on fresh start
         registerActivityLifecycleCallbacks(object : ActivityLifecycleCallbacks {
             private var firstActivityCreated = false

app/src/main/java/app/morphe/manager/util/AvatarUtils.kt

@@ -15,12 +15,13 @@ import androidx.compose.ui.layout.ContentScale
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.net.URL
+import java.util.concurrent.ConcurrentHashMap
 
 /**
  * In-memory avatar cache scoped to the process lifetime.
  */
 object AvatarCache {
-    private val cache = mutableMapOf<String, Bitmap>()
+    private val cache = ConcurrentHashMap<String, Bitmap>()
 
     operator fun get(url: String): Bitmap? = cache[url]
     operator fun set(url: String, bitmap: Bitmap) { cache[url] = bitmap }