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February 27, 2026 04:26
- Make FileDataStorageManager.getFolderContent() public to allow MetadataWorker access - Add recursive parameter to BackgroundJobManager.downloadFolder() with default false - Add job dependency in BackgroundJobManagerImpl to ensure MetadataWorker runs before FolderDownloadWorker - Add recursive parameter to FileDownloadHelper.downloadFolder() - Pass recursive parameter in SynchronizeFolderOperation
- Add FORCE_REFRESH flag to bypass eTag caching and always fetch fresh content - Implement BFS-based recursive folder processing to fetch metadata for ALL nested subfolders - Before: Only processed one level of subfolders (e.g., Artists but not ABBA inside it) - After: Recursively processes all nested folders at every depth level - Also fetches files at each folder level to ensure FolderDownloadWorker has access to all files
- Add warning log when no files found for recursive download - Add detailed debug logging in getAllFilesRecursive() to track folder processing - Log content count at each folder level to help diagnose issues
- Add DOWNLOAD_FOLDER_RECURSIVE action in FileAction - Add action ID in ids.xml - Add UI strings for recursive download confirmation dialogs - Add showDownloadFolderRecursiveConfirmation() in FileActivity - Add downloadFolderRecursive() method in FileOperationsHelper - Add overloaded syncFile() method with recursive parameter
- FileDetailFragment: Add handler for action_sync_file_recursive to show recursive download dialog - OCFileListFragment: Add handler for recursive download action in file list - PreviewTextFileFragment: Add confirmation dialog for folder sync
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Summary
This PR fixes #269 , the inability to recursively sync folders (an issue that is 10 years old). Previously, when users tried to sync a folder with subfolders recursively, only the immediate children were synced. I spent three days of time I should have been focusing on my programming assignments on this, so please let me know if there is anything wrong with my code instead of just throwing it out. I am happy to collaborate, but I needed this feature so that I can properly sync and listen to my music.
Root Cause
The issue had three contributing factors:
Race Condition: MetadataWorker and FolderDownloadWorker were running without proper dependency, causing FolderDownloadWorker to query the database before metadata was populated.
eTag Caching: MetadataWorker was skipping folder content refresh when eTag hadn't changed, leaving the database empty.
Single-Level Processing: MetadataWorker only fetched one level of subfolders, not recursively traversing into nested folders like
Artists/ABBA, for example.Changes
🏁 Checklist