* Add performance and stylus debugging logs
* Refactor and decouple UI models from `MainViewModel`
* Refactor library state management and projection logic
* Implement desktop shell using Compose Multiplatform
* Implement desktop shell using Compose Multiplatform
* Implement desktop shell using Compose Multiplatform
* Introduce ReaderEngine and enhance EPUB reader features in windows app
* Move core paginated reader logic to a Kotlin Multiplatform `shared` module and introduce experimental desktop support.
* Implement PDF rendering and text extraction for desktop using Pdfium
* Add `NonReaderScreens.kt` and UI dependencies
* Refactor and centralize library state management and models to improve cross-platform consistency
* Implement JSON persistence for desktop library and enhance library management features including shelf CRUD, tagging, and metadata editing
* Implement PDF annotation system and enhanced zoom controls for the desktop viewer
* Implement WebView-based EPUB rendering for desktop using CEF and embedded resources
* Optimize UI state projection, navigation state handling, and main screen pager performance
* Implement Bring Your Own Key (BYOK) support for AI features in OSS version
* Support Gemini-based Cloud TTS with BYOK support for OSS builds
* Refactor table cell image sizing in `PaginatedReader` and improve `MobiParser` native library loading and error handling.
* crash fixes
* Enhance navigation stability with lifecycle-aware safety checks and update `navigation-compose` to 2.9.6
* Implement dynamic bottom padding for the page info bar to account for device rounded corners
* Implement bidirectional jump history navigation and replace the jump-back pill with a dedicated `PdfJumpHistoryBar`
* Optimize PDF tiling performance and refine pan-and-fling gesture handling
* Implement customizable toolbars with drag-and-drop reordering and placement for PDF and EPUB readers
* Updated UI for customize toolbar
* Refine drag-and-drop reordering and section assignment for PDF and EPUB reader controls
* restructure PDF viewer UI component hierarchy to fix verifier crash
* Implement separate text dimming factors for light and dark themes
* Synchronize Pdfium access and improve resource lifecycle safety across Kotlin and native layers
* Enhance image alignment in paginated and EPUB readers through anchor detection and style-based positioning
* Centralize file type resolution logic and implement HTML sanitization during import
* Introduce vertical margin customization and configurable progress bar positioning
* texture support in epub reader
* Enhance TTS session management, progress tracking, and diagnostic logging
* Optimize library state projection and folder synchronization performance by refactoring collection lookups and refining metadata extraction logic.
* Refine TTS page mapping for PDF and overhaul TTS control UI
* Implement natural session completion logic in `TtsPlaybackManager` for cloud tts
* Replace Snackbar with `CustomTopBanner` for notifications in `PdfViewerScreen`
* Refine TTS playback continuity across PDF pages and improve state management for session transitions
* Implement global texture transparency and enhance textured theme support across PDF and EPUB readers.
* Update reader themes and improve texture rendering in page animations, EPUB UI, and immersive mode
* Add Support Project screen
* Optimize library performance via projection caching, batch database updates, and scoped folder synchronization.
* Enhance folder synchronization with fallback query mechanisms and refactor annotation sidecar importing logic
* Bump version to 1.0.47 (51)
* add a UI trigger for demo annotations
* Implement internal link navigation
* Simplify bottom padding logic in `EpubReaderScreen` for vertical scroll mode
* Add support for Calibre metadata
* Implement advanced library management with Room-backed collections, tags, and smart rules.
* Display book series information in book details and remove tags from home screen
* Implement zoom reset functionality in PDF viewer
* Add a "Pages" thumbnail view to the PDF navigation drawer
* Implement jump-back navigation in PDF viewer
* MainViewModel: disable FolderSyncWorker, add log export, and enhance PDF position logging
* Replace Gson with Kotlin Serialization in SmartCollectionEngine
* Implement ONNX-based speech bubble detection
* Implement speech bubble detection in PDF viewer
* Implement "Smart Comic Zoom" feature for PDF manga/comic reading
* Implement reader session persistence and restoration in `MainViewModel`
* Add tap-to-turn page feature to PDF viewer
* Improve book cache management and recovery
* Refactor top overlay padding logic in `PdfViewerScreen`
* Implement stylus eraser support in PDF reader
* Refactor ReaderTextFormatPanel to use ModalBottomSheet and add new formatting controls
* Introduce a customizable horizontal margin setting for the EPUB reader
* Refine folder sync and metadata handling for better conflict resolution and stability.
* Introduce user-adjustable image scaling for the EPUB reader
* Use maxWidthPx as default width fallback for blocks
* Improve cross-page text selection and header styling in the paginated reader
* Refactor speech bubble detection and UI to support segmentation masks and interactive scaling
* Improve speech bubble detection masking and rendering quality
* Update ONNX speech bubble detector to use `.ort` model and optimize inference
* Improve pagination accuracy
* Implement hierarchical folder navigation for the library.
* Refactor library item layout for improved space efficiency
* Add support for browsing and downloading Google Fonts
* Persist library landing state and add shelf search functionality
* Fix base tts sample.
* Move SpeechBubbleDetector to main source set and update ONNX dependency
* Implement a "locate" feature and improve synchronization for TTS (Text-to-Speech) playback across EPUB and PDF readers.
* Refine TTS synchronization and voice management in the EPUB reader
* Adjust OCR checks for OSS flavor and optimize external dictionary intent flags
* Add "Locate" button to PDF drawer's pages tab and move the page number to bottom right of thumbnail
* fix various crashes
* Refactor SpeechBubbleDetector into product flavors
* Implement speech bubble detection caching and background prefetching
* Implement on-demand download for Bubble Zoom ML model
* Add smooth animation for PDF speech bubble expansion
* fixes#252
* hide Google Fonts option, in FontsScreen, for offline variant
* Bump version to 1.0.46(46)
* Updated `.gitattributes` to correctly vendor all files within the `libmobi` and `woff2` directories.
* Improved TTS chapter transition handling
* Improved TTS stability and chapter advancement in the EPUB reader.
* Implemented PDF metadata extraction for titles and authors using PdfiumCore in `MainViewModel` and `MetadataExtractionWorker`.
* Implemented support for interactive footnotes in the EPUB vertical reader.
* Added support for footnotes in the paginated EPUB reader.
* Implemented a customizable app theming system.
* Added support for app-wide contrast and text brightness customization in the "App Theme" option.
* option to adjust pull-to-chapter-change drag in the EPUB vertical reader under visual options.
* Updated `PdfViewerScreen` to replace the standalone full-screen toggle with a more comprehensive "Visual Options" system UI management tool.
* Added support for AI and Cloud credits in the Pro flavor.
* Implemented credit-based authentication and authorization for AI features and Cloud TTS.
* Updated AI feature access and purchase handling to a credit-based system.
* Refactored and enhanced the Text-to-Speech (TTS) system with persistent caching and a redesigned UI.
* Improved TTS cache management by organizing audio files by book title and adding a detailed cache storage UI.
* Refactored the TTS service to use a WebSocket-based Gemini Live connection for cloud audio generation.
* Removed the TTS cache settings tab and simplified voice sample playback by removing local caching logic.
* Implemented a low-latency streaming mechanism for Cloud TTS using a custom `ConcurrentInputStream` and `ExoPlayer` data source.
* Improved cloud TTS stability and prefetching logic in `TtsService` and `TtsPlaybackManager`.
* Implemented AI summarization caching and cost tracking in the EPUB reader.
* Enhanced chapter summary caching and UI feedback.
* limit summaries for pro users to 10 per day
* Implemented local caching for Cloud TTS audio chunks.
* Removed the Free tier tab from `ProScreen` and simplified the subscription interface. Updated tab logic to focus on Pro and Credits, including a new cost breakdown section for AI and Cloud TTS features.
* Refactored HTML parsing to include all child nodes during content chunking and semantic block parsing.
* Improved image rendering consistency in epub pagination reader
* Improved HTML parsing in `HtmlParser.kt` to better handle complex nested structures
* Improved CSS styling support in the epub paginated reader for word spacing and text decorations.
* Implemented scroll throttling in `epub_reader.js` to improve performance during scroll events
* Improved CFI resolution and scrolling reliability in EPUB reader
* Optimized PaginatedReader performance by caching text decorations.
* Implemented batching for recent file database operations to handle large datasets and introduced `RecentFileSummary` to optimize data retrieval by excluding heavy JSON columns.
* Improved navigation stability by wrapping `navController.navigate` and `popBackStack` calls in a try-catch block to handle `IllegalStateException` during concurrent transitions. Additionally, refined the backstack check for the main route to prevent redundant pops.
* feat(tts): redesign TTS controls with overlay UI and cache management
* Expanded and improved the TTS (Text-to-Speech) capabilities, particularly for Cloud voices.
* Improved TTS playback control and cache management.
* Integrated the TTS cache manager into the settings sheet and improved the TTS configuration UI.
* Updated `DeviceVoicesTab` to respect the current TTS mode, disabling voice selection when not in `BASE` mode.
* Improved error handling and state management for Cloud TTS in `TtsService` and `TtsPlaybackManager`.
* Improved TTS voice selection UI and sample playback logic.
* Updated `TtsUtils` and `TtsService` to remove `chunkIndex` from TTS cache filenames. Refined the cache file naming convention to rely on text and speaker hashes, and updated the cache file filter logic to correctly identify speakers in both legacy and new filename formats.
* Optimized tile rendering and state propagation in PDF viewer
* Added "Expand All", "Collapse All", and "Locate" functionality to the Table of Contents in both EPUB and PDF readers.
* Added sign-in requirement for credit purchases and improved purchase migration logic.
* Updated `EpubReaderTts` to support authenticated TTS requests by passing an auth token provider. The `ttsController.start` method now includes an `authToken` retrieved via `getAuthToken` and explicitly sets the `playbackSource` to "READER".
* feat(ai): replace summarization popup with a comprehensive AI Hub Bottom Sheet
* Improved locator logic and block traversal in `BookPaginator`.
* Updated AI features and Cloud TTS logic.
* Added manual clear and auto-reset functionality for AI summaries and recaps
* Optimized file importing, EPUB parsing, and TTS playback concurrency.
* Restricted TTS mode to BASE in OSS flavor and fixed TTS mode persistence in PDF viewer
* Bump version to 1.0.43(44)
* Optimized PDF tile rendering performance and quality.
* Added support for adjusting TTS voice speed and pitch.
* Updated the TTS settings UI and playback logic to support real-time parameter adjustments.
* Added horizontal scrolling to the PDF viewer bottom toolbar and updated tool arrangement to use fixed spacing.
* Refined cross-page selection and text extraction in `PaginatedReader`
* Updated EPUB reader styling logic to refine typography and layout controls.
* Bump version to 1.0.42(43)
* Improved PDF embedded annotation hit detection logic
* Updated EPUB and PDF reader logic to improve position tracking and TTS stability.
Key changes:
- Refined CFI and locator handling in `EpubReaderScreen` with improved initialization.
- Updated `BookPaginator` to more accurately calculate text offsets in chunks and improve CFI matching logic.
- Modified `TtsPlaybackManager` to insert media items at the correct index, ensuring proper playback order.
- Simplified `EpubReaderTts` page scrolling by removing conditional checks for backward jumps.
- Disabled OCR fallback in `PdfViewerScreen` during text extraction for TTS.
* Updated extractTextWithCfiFromTop to use getBoundingClientRect for identifying the starting block
* enable cloud tts but only in pro(flavor) debug mode for testing
* Added a device voice settings sheet to allow users to select and preview system-level TTS voices.
* Refactored `DeviceVoiceSettingsSheet` to improve voice selection and filtering, and updated `BaseTtsSynthesizer` for better language handling.
* fix OOM crash by refactoring EpubImage to use lazy loading
- Removed raw image ByteArray from EpubImage data class to prevent OutOfMemoryErrors on large books.
- Updated EpubParser and MobiParser to only store image paths in the EpubBook object.
- Images are now loaded on-demand from disk via file URIs in WebView and Coil, reducing initial heap allocation.
* fix(tts): resolve OutOfMemoryError by removing large strings from state bundle
- Removed 'currentText' from the TtsState bundle inside MediaSession custom layout.
- Updated TtsController to retrieve the current text chunk via MediaItem metadata.
- This prevents heap exhaustion caused by high-frequency serialization of large text strings during word tracking and polling updates.
* feat: rework Folder Sync architecture to separate Managed vs Linked books
- Introduced "Managed" (imported to app storage) vs "Linked" (SAF URI) book logic.
- Disabled Google Drive/Metadata synchronization for Folder-Linked books to respect privacy and storage.
- Updated deletion logic: Folder books are now marked as deleted in the DB to blacklist them from future auto-scans, while Managed books are permanently purged from local and cloud storage.
- Enhanced folder sync discoverability by adding a direct "Sync Folder" navigation button in Home screen.
- Implemented reactive pager navigation in MainScreen and LibraryScreen via LaunchedEffect to allow programmatic tab switching from the ViewModel.
* Implemented a local folder synchronization system to track and update book metadata across devices.
Key changes:
- Added `FolderBookMetadata` and `LocalSyncUtils` for serializing and managing metadata files in a `.episteme` directory.
- Implemented bidirectional sync in `FolderSyncWorker` to reconcile local database state with folder-based metadata using timestamps and Syncthing conflict resolution.
- Updated `MainViewModel` to trigger folder metadata sync when closing a book and verify for remote updates upon opening.
- Enhanced folder management with manual scan support via `WorkManager` and automatic cleanup of database entries when a folder is disconnected.
- Added `RecentFileDao` methods to support bulk deletion and prefix-based file lookups.
* Removed API 34 restriction for chapter processing and updated local folder sync directory name
* Increased TTS timeouts, added edge-to-edge support in MainScreen, and improved TtsChunk mapping safety
* Improved folder synchronization and metadata management.
- Added metadata-only sync option and triggered it on app start.
- Implemented hidden metadata filenames (prefixed with `.`) to reduce file clutter.
- Added automatic creation of `.nomedia` files in the sync directory.
- Enhanced sync conflict resolution by picking the latest metadata and cleaning up obsolete or orphaned files.
- Added "Sync Metadata" button to the Library screen.
- Updated UI labels for local folder sync to clarify Google Drive integration.
- Refactored `FolderSyncWorker` to support targeted metadata-only synchronization.
* Implement folder sync migration and refactoring
- Added a migration dialog to inform users about the folder sync refactor, where books are now read directly from external storage.
- Updated `MainViewModel` to handle migration state and trigger a full scan upon completion or dismissal of the dialog.
- Modified `FolderSyncWorker` to support legacy book matching during migration, updating file URIs and cleaning up internal app storage for migrated books.
- Improved synchronization logic between local and remote metadata, including cleanup of orphaned metadata files.
- Refined `RecentFileItem` updates during sync to preserve progress and bookmarks based on last modified timestamps.
* Implemented pull-to-refresh for library sync and enhanced folder file deletion.
- Added `isRefreshing` state to `MainViewModel` and integrated `PullToRefreshBox` in `HomeScreen`.
- Implemented `refreshLibrary` to trigger cloud and folder metadata synchronization.
- Updated deletion logic to physically remove files and metadata from synced local folders.
- Added a warning to the delete confirmation dialog when removing folder-synced items.
- Improved folder sync reliability by performing lazy cleanup of missing files during interaction and sync.
- Fixed a bug where sync loading indicators would not retract on failure or cancellation.
* Improved bookmark navigation and scroll synchronization in EPUB reader
- Refined bookmark navigation logic for vertical scroll mode to handle chunk injection more reliably.
- Added `isNavigatingToBookmark` state to show a loading overlay during long jumps.
- Implemented `onScrollFinished` callback in `CfiJsBridge` to synchronize UI state with WebView scroll completion.
- Updated `ChapterWebView` to use `rememberUpdatedState` for JavaScript bridge callbacks to ensure data consistency.
- Improved `getCurrentCfi` and `scrollToCfi` in `epub_reader.js` with better visibility probing and retry logic for detached nodes.
* Implemented background metadata extraction for folder sync.
Key changes:
- Added `MetadataExtractionWorker` to handle heavy metadata and cover extraction for files in the background.
- Refactored `FolderSyncWorker` to perform fast file discovery using placeholders, enqueuing the metadata worker upon completion.
- Added `getFolderBooksWithoutCovers` query to `RecentFileDao`.
- Updated UI components (`EmptyState`, `MainViewModel`) to improve user feedback during sync and provide clear setup actions.
- Enhanced `EmptyState` composable to support secondary actions and custom button text.
* Updated Library Screen UI
docs: Revamp README and add APK naming convention
This commit introduces a complete overhaul of the `README.md` to improve project presentation. Key changes include:
* Adds a new header with the app icon and a Google Play badge.
* Updates the feature graphic and includes a note distinguishing the OSS version from the Play Store version.
* Refines the "Open Source Libraries" section to be more structured.
* Moves the main preview image into the `docs` directory.
Additionally, the `app/build.gradle.kts` file is updated to configure a standardized naming convention for output APK files, including flavor, version, and build type.
* refactor copyright headers and fix README icon alignment
This commit introduces two main changes across the codebase:
The `spotless/copyright.kt` template have been updated for consistency:
* The author name is simplified from "Episteme Authors" to "Episteme".
* The contact email prefix is shortened from "Electronic mail:" to "mail:".
Second, the `README.md` file is adjusted to correct the vertical alignment of the app icon with the project title.
