Added lazy initialization of DownloadFile status for better SAF performance

Minor fixes

ultrasonic/src/main/java/org/moire/ultrasonic/util/StreamProxy.java

@@ -153,14 +153,28 @@ public class StreamProxy implements Runnable
             }
 
             Timber.i("Processing request for file %s", localPath);
-            if (!Storage.INSTANCE.isPathExists(localPath)) {
+			if (Storage.INSTANCE.isPathExists(localPath)) return true;
-                Timber.e("File %s does not exist", localPath);
+
-                return false;
+			// Usually the .partial file will be requested here, but sometimes it has already
+			// been renamed, so check if it is completed since
+			String saveFileName = FileUtil.INSTANCE.getSaveFile(localPath);
+			String completeFileName = FileUtil.INSTANCE.getCompleteFile(saveFileName);
+
+			if (Storage.INSTANCE.isPathExists(saveFileName)) {
+				localPath = saveFileName;
+				return true;
 			}
 
+			if (Storage.INSTANCE.isPathExists(completeFileName)) {
+				localPath = completeFileName;
 				return true;
 			}
 
+			Timber.e("File %s does not exist", localPath);
+			return false;
+
+		}
+
 		@Override
 		public void run()
 		{

ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/DownloadFile.kt

@@ -42,8 +42,8 @@ class DownloadFile(
     save: Boolean
 ) : KoinComponent, Identifiable {
     val partialFile: String
-    val completeFile: String
+    lateinit var completeFile: String
-    private val saveFile: String = FileUtil.getSongFile(song)
+    val saveFile: String = FileUtil.getSongFile(song)
     var shouldSave = save
     private var downloadTask: CancellableTask? = null
     var isFailed = false
@@ -68,29 +68,30 @@ class DownloadFile(
     private val activeServerProvider: ActiveServerProvider by inject()
 
     val progress: MutableLiveData<Int> = MutableLiveData(0)
-    val status: MutableLiveData<DownloadStatus>
+
+    val lazyStatus: Lazy<DownloadStatus> = lazy {
+        when {
+            Storage.isPathExists(saveFile) -> {
+                DownloadStatus.PINNED
+            }
+            Storage.isPathExists(completeFile) -> {
+                DownloadStatus.DONE
+            }
+            else -> {
+                DownloadStatus.IDLE
+            }
+        }
+    }
+
+    val status: MutableLiveData<DownloadStatus> by lazy {
+        MutableLiveData(lazyStatus.value)
+    }
 
     init {
-        val state: DownloadStatus
-
         partialFile = FileUtil.getParentPath(saveFile) + "/" +
             FileUtil.getPartialFile(FileUtil.getNameFromPath(saveFile))
         completeFile = FileUtil.getParentPath(saveFile) + "/" +
             FileUtil.getCompleteFile(FileUtil.getNameFromPath(saveFile))
-
-        when {
-            Storage.isPathExists(saveFile) -> {
-                state = DownloadStatus.PINNED
-            }
-            Storage.isPathExists(completeFile) -> {
-                state = DownloadStatus.DONE
-            }
-            else -> {
-                state = DownloadStatus.IDLE
-            }
-        }
-
-        status = MutableLiveData(state)
     }
 
     /**

ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/Downloader.kt

@@ -267,7 +267,8 @@ class Downloader(
             temp.addAll(downloadQueue)
             temp.addAll(
                 playlist.filter {
-                    when (it.status.value) {
+                    if (!it.lazyStatus.isInitialized()) false
+                    else when (it.status.value) {
                         DownloadStatus.DOWNLOADING -> true
                         else -> false
                     }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/CacheCleaner.kt

@@ -259,7 +259,8 @@ class CacheCleaner : CoroutineScope by CoroutineScope(Dispatchers.IO) {
 
             for (downloadFile in downloader.value.all) {
                 filesToNotDelete.add(downloadFile.partialFile)
-                filesToNotDelete.add(downloadFile.completeOrSaveFile)
+                filesToNotDelete.add(downloadFile.completeFile)
+                filesToNotDelete.add(downloadFile.saveFile)
             }
 
             filesToNotDelete.add(musicDirectory.path)

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/FileUtil.kt

@@ -401,6 +401,14 @@ object FileUtil {
         return path.substringBeforeLast('/')
     }
 
+    fun getSaveFile(name: String): String {
+        val baseName = getBaseName(name)
+        if (baseName.endsWith(".partial") || baseName.endsWith(".complete")) {
+            return "${getBaseName(baseName)}.${getExtension(name)}"
+        }
+        return name
+    }
+
     /**
      * Returns the file name of a .complete file of the given file.
      *

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/StorageFile.kt

@@ -28,6 +28,7 @@ class StorageFile(
 
     override val length: Long
         get() {
+            try {
                 val resolver = UApp.applicationContext().contentResolver
                 val column = arrayOf(DocumentsContract.Document.COLUMN_SIZE)
                 resolver.query(uri, column, null, null, null)?.use { cursor ->
@@ -35,11 +36,15 @@ class StorageFile(
                         return cursor.getLong(0)
                     }
                 }
+            } catch (_: IllegalArgumentException) {
+                Timber.d("Tried to get length of $uri but it probably doesn't exists")
+            }
             return 0
         }
 
     override val lastModified: Long
         get() {
+            try {
                 val resolver = UApp.applicationContext().contentResolver
                 val column = arrayOf(DocumentsContract.Document.COLUMN_LAST_MODIFIED)
                 resolver.query(uri, column, null, null, null)?.use { cursor ->
@@ -47,6 +52,9 @@ class StorageFile(
                         return cursor.getLong(0)
                     }
                 }
+            } catch (_: IllegalArgumentException) {
+                Timber.d("Tried to get length of $uri but it probably doesn't exists")
+            }
             return 0
         }
 
@@ -129,7 +137,6 @@ class StorageFile(
         val fileName = FileUtil.getNameFromPath(path)
         var file: StorageFile? = null
 
-        Timber.v("StorageFile getFromPath listing files on path: $path")
         parent.listFiles().forEach {
             if (it.name == fileName) file = it as StorageFile
             storageFilePathDictionary[it.path] = it as StorageFile