* 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)
* Add visual options and seamless transitions to the EPUB reader
* Add support for DOCX file format
* Refine padding and status bar inset handling in Epub pagination mode
* Add file size parameter for recent files and sorting
* Refactor book data cleanup logic into a centralized method
* Bump version to 1.0.40(41)
* Add "Keep Screen On" feature to PDF and Epub readers.
* Add `rawLibraryFiles` to `MainViewModel` and improve file path resolution in `SharedComposables`.
Specifically:
- Updated `MainViewModel` state and UI logic to track and provide unfiltered library files.
- Enhanced file path formatting in `SharedComposables` to better handle Document, Tree, and primary storage URIs.
- Added scrollable support for long text values in `DetailItem` composable.
- Passed `rawLibraryFiles` to `FolderSyncScreen` to ensure sync logic uses the base file list.
* Update info bar background and text colors in EpubReaderScreen to match the selected theme.
* Prevent accidental UI bar toggles immediately after scrolling in EPUB vertical mode.
* feat: implement EPUB highlights sync and legacy migration
- Implement Cloud and Local Folder sync for EPUB highlights.
- Add highlight JSON serialization/deserialization helpers in EpubReaderAnnotations.
- Implement automatic migration of highlights from SharedPreferences to the Database on book open.
- Add cleanup logic to remove legacy SharedPreferences data after successful DB migration.
- Update RecentFilesRepository to trigger local folder metadata sync when highlights are modified.
- Update FolderSyncWorker to pull highlights and custom names from linked folder metadata.
* Update intent filters
* Added support for filtering file types in synced folders
* Added support for custom file names and enhanced file information dialog
* added feedback option in the homescreen drawer
* Implemented a limit for number of recent files displayed on the home screen
* Implemented PDF reflow mode by introducing a mechanism to convert PDF content to Markdown/HTML for viewing in the EPUB reader.
Specific changes include:
- Added `PdfReflowGenerator` and `PdfToMarkdownGenerator` to handle PDF text extraction and conversion to reflowable formats.
- Updated `MainViewModel` with `toggleReflowMode` logic to switch between original PDF and reflowed views.
- Modified `RecentFileEntity` and `RecentFileDao` to persist user reflow preferences, including a Room database migration (v12 to v13).
- Updated `PdfViewerScreen` and `EpubReaderControls` to include UI options for toggling reflow mode.
- Integrated reflow preference check into the book opening workflow to automatically load the preferred view.
- Updated `AppNavigation` and `EpubReaderScreen` to support the new view switching state.
* Implemented background processing and incremental loading for PDF reflow mode.
- Added `reflowProgress` to `MainViewModel` to track and display PDF-to-Markdown conversion progress in the UI.
- Refactored `PdfToMarkdownGenerator` to generate a skeleton EPUB structure immediately while processing page content (text and images) asynchronously.
- Switched PDF text extraction to use `PDFBox` with optimized memory settings and JPEG compression for images.
- Implemented priority page processing in reflow mode, starting with the user's current page.
- Added "Clear Reflow Cache" debug option to the Home Screen.
- Enhanced `BookPaginator` to support lazy loading of chapter content from disk and improved cache hit detection.
* Refactored PDF Reflow Mode to generate standalone Markdown files instead of temporary EPUB books.
* perf(reflow): optimize PDF-to-Markdown conversion and fix viewing lag
- Re-architected PdfToMarkdownGenerator to use a single-pass stream (O(N) complexity), fixing performance bottlenecks and timeouts on large PDFs.
- Implemented "Virtual Chaptering" in SingleFileImporter for Markdown files to split content into page-level HTML files, eliminating UI lag during reading.
- Simplified ReflowWorker to delegate progress tracking and looping to the generator.
- Enhanced PdfViewerScreen with a prominent top-bar progress indicator and a completion snackbar with an "OPEN" action.
* Optimized EPUB parsing performance and fixed PDF viewer UI layout.
- Optimized `EpubParser` by implementing parallel chapter parsing using coroutines and a semaphore to limit concurrency.
- Reduced memory usage in `EpubParser` and `SingleFileImporter` by no longer storing full HTML content in memory for chapters.
- Updated `EpubXMLFileParser` to support an existing `Document` object to avoid redundant Jsoup parsing.
- Fixed an issue in `PdfViewerScreen` where the snackbar was appearing under the bottom app bar.
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.
