redesign app phase 3

lib/services/downloads_helper.dart

@@ -11,6 +11,7 @@ import 'package:path/path.dart' as path_helper;
 
 import 'finamp_settings_helper.dart';
 import 'finamp_user_helper.dart';
+import 'download_support.dart';
 import 'jellyfin_api.dart';
 import 'jellyfin_api_helper.dart';
 import 'get_internal_song_dir.dart';
@@ -61,6 +62,10 @@ class DownloadsHelper {
     /// The view that this download is in. Used for sorting in offline mode.
     required String viewId,
   }) async {
+    if (!isDownloaderSupported) {
+      return Future.error("Downloads are only supported on Android and iOS");
+    }
+
     // Check if we have external storage permission. It's a bit of a hack, but
     // we only do this if downloadLocation.deletable is true because if it's
     // true, we're downloading to a user location. You wouldn't want the app
@@ -228,6 +233,10 @@ class DownloadsHelper {
   /// Gets the download status for the given item ids (Jellyfin item id, not flutter_downloader task id).
   Future<List<DownloadTask>?> getDownloadStatus(List<String> itemIds) async {
     try {
+      if (!isDownloaderSupported) {
+        return [];
+      }
+
       List<String> downloadIds = [];
 
       for (final itemId in itemIds) {
@@ -248,7 +257,8 @@ class DownloadsHelper {
     }
   }
 
-  Future<void> removeChildFromParent({required String parentId, required List<String> childIds}) async {
+  Future<void> removeChildFromParent(
+      {required String parentId, required List<String> childIds}) async {
     var album = _downloadedParentsBox.get(parentId);
     for (String childId in childIds) {
       album?.downloadedChildren.removeWhere((key, value) => key == childId);
@@ -266,17 +276,18 @@ class DownloadsHelper {
       _downloadsLogger.info(
           "Could not find $jellyfinItemId in downloadedItemsBox, assuming already deleted");
     } else {
-      DownloadedImage? downloadedImage = getDownloadedImage(downloadedSong.song);
+      DownloadedImage? downloadedImage =
+          getDownloadedImage(downloadedSong.song);
       downloadedImage?.requiredBy.remove(jellyfinItemId);
       if (downloadedSong.requiredBy.isEmpty) {
-        _downloadsLogger.info(
-            "Item $jellyfinItemId has no dependencies, deleting files");
+        _downloadsLogger
+            .info("Item $jellyfinItemId has no dependencies, deleting files");
 
         _downloadsLogger.info(
             "Deleting ${downloadedSong.downloadId} from flutter_downloader");
-        deleteDownloadFutures.add(FlutterDownloader.remove(
+        deleteDownloadFutures.add(_removeDownload(
           taskId: downloadedSong.downloadId,
-          shouldDeleteContent: true,
+          file: downloadedSong.file,
         ));
 
         await _downloadedItemsBox.delete(jellyfinItemId);
@@ -308,7 +319,8 @@ class DownloadsHelper {
 
   /// This function will delete all given jellyfinItemIds regardless if they are still used
   /// by other albums/playlists
-  Future<void> deleteDownloadChildren({required List<String> jellyfinItemIds, String? deletedFor}) async {
+  Future<void> deleteDownloadChildren(
+      {required List<String> jellyfinItemIds, String? deletedFor}) async {
     final List<Future> deleteDownloadFutures = [];
     final Map<String, Directory> directoriesToCheck = {};
 
@@ -321,11 +333,11 @@ class DownloadsHelper {
             "Could not find $jellyfinItemId in downloadedItemsBox, assuming already deleted");
       } else {
         DownloadedImage? downloadedImage =
-        getDownloadedImage(downloadedSong.song);
+            getDownloadedImage(downloadedSong.song);
 
         if (deletedFor != null) {
-          _downloadsLogger
-              .info("Removing $deletedFor dependency from $jellyfinItemId, current dependencies ${downloadedSong.requiredBy}");
+          _downloadsLogger.info(
+              "Removing $deletedFor dependency from $jellyfinItemId, current dependencies ${downloadedSong.requiredBy}");
           downloadedSong.requiredBy.removeWhere((item) => item == deletedFor);
         }
 
@@ -337,9 +349,9 @@ class DownloadsHelper {
 
           _downloadsLogger.info(
               "Deleting ${downloadedSong.downloadId} from flutter_downloader");
-          deleteDownloadFutures.add(FlutterDownloader.remove(
+          deleteDownloadFutures.add(_removeDownload(
             taskId: downloadedSong.downloadId,
-            shouldDeleteContent: true,
+            file: downloadedSong.file,
           ));
 
           await _downloadedItemsBox.delete(jellyfinItemId);
@@ -347,7 +359,7 @@ class DownloadsHelper {
 
           if (deletedFor != null) {
             DownloadedParent? downloadedAlbumTemp =
-            _downloadedParentsBox.get(deletedFor);
+                _downloadedParentsBox.get(deletedFor);
             if (downloadedAlbumTemp != null) {
               downloadedAlbumTemp.downloadedChildren.remove(jellyfinItemId);
               await _downloadedParentsBox.put(deletedFor, downloadedAlbumTemp);
@@ -417,7 +429,8 @@ class DownloadsHelper {
     String? deletedFor,
   }) async {
     try {
-      await deleteDownloadChildren(jellyfinItemIds: jellyfinItemIds, deletedFor: deletedFor);
+      await deleteDownloadChildren(
+          jellyfinItemIds: jellyfinItemIds, deletedFor: deletedFor);
       if (deletedFor != null) {
         await deleteDownloadParent(deletedFor: deletedFor);
       }
@@ -445,12 +458,27 @@ class DownloadsHelper {
     _downloadedImagesBox.delete(downloadedImage.id);
     _downloadedImageIdsBox.delete(downloadedImage.downloadId);
 
-    await FlutterDownloader.remove(
+    await _removeDownload(
       taskId: downloadedImage.downloadId,
-      shouldDeleteContent: true,
+      file: downloadedImage.file,
     );
   }
 
+  Future<void> _removeDownload(
+      {required String taskId, required File file}) async {
+    if (isDownloaderSupported) {
+      await FlutterDownloader.remove(
+        taskId: taskId,
+        shouldDeleteContent: true,
+      );
+      return;
+    }
+
+    if (await file.exists()) {
+      await file.delete();
+    }
+  }
+
   /// Calculates the total file size of the given directory.
   /// Returns the total file size in bytes.
   /// Returns 0 if the directory doesn't exist.
@@ -480,6 +508,10 @@ class DownloadsHelper {
 
   Future<List<DownloadTask>?> getIncompleteDownloads() async {
     try {
+      if (!isDownloaderSupported) {
+        return [];
+      }
+
       return await FlutterDownloader.loadTasksWithRawQuery(
           query: "SELECT * FROM task WHERE status <> 3");
     } catch (e) {
@@ -491,9 +523,13 @@ class DownloadsHelper {
   Future<List<DownloadTask>?> getDownloadsWithStatus(
       DownloadTaskStatus downloadTaskStatus) async {
     try {
+      if (!isDownloaderSupported) {
+        return [];
+      }
+
       return await FlutterDownloader.loadTasksWithRawQuery(
           query:
-              "SELECT * FROM task WHERE status = ${downloadTaskStatus.value}");
+              "SELECT * FROM task WHERE status = ${downloadTaskStatus.index}");
     } catch (e) {
       _downloadsLogger.severe(e);
       return Future.error(e);
@@ -851,6 +887,10 @@ class DownloadsHelper {
   /// creating new ones with the same settings. Returns number of songs
   /// redownloaded
   Future<int> redownloadFailed() async {
+    if (!isDownloaderSupported) {
+      return 0;
+    }
+
     final failedDownloadTasks =
         await getDownloadsWithStatus(DownloadTaskStatus.failed);
 
@@ -883,8 +923,8 @@ class DownloadsHelper {
       for (String parent in parents) {
         // We don't specify deletedFor here because it could cause the parent
         // to get deleted
-        deleteFutures
-            .add(deleteParentAndChildDownloads(jellyfinItemIds: [downloadedSong.song.id]));
+        deleteFutures.add(deleteParentAndChildDownloads(
+            jellyfinItemIds: [downloadedSong.song.id]));
 
         if (parentItems[downloadedSong.song.id] == null) {
           parentItems[downloadedSong.song.id] = [];
@@ -1055,7 +1095,6 @@ class DownloadsHelper {
           {List<String>? keys}) =>
       _downloadedItemsBox.listenable(keys: keys);
 
-
   /// Converts a dart list to a string with the correct SQL syntax
   String _dartListToSqlList(List dartList) {
     try {
@@ -1106,6 +1145,10 @@ class DownloadsHelper {
   }) async {
     assert(item.blurHash != null);
 
+    if (!isDownloaderSupported) {
+      return Future.error("Downloads are only supported on Android and iOS");
+    }
+
     if (_downloadedImagesBox.containsKey(item.blurHash)) return;
 
     final imageUrl = _jellyfinApiData.getImageUrl(