Move daily quota exceeded problem response logic to a dedicated utility in `lib/server/rate-limit/problem-response`. Refactor API routes to use the new builder and remove duplicated formatting code. Update all relevant imports for consistency. This improves maintainability and ensures uniform error responses across TTS endpoints.
Redesign TTS segment storage by decomposing the `tts_segments` table into two normalized tables: `tts_segment_entries` for unique segment identity and locator projection, and `tts_segment_variants` for per-settings audio variants. Update schema, queries, and API routes to use the new structure, including manifest pagination and segment resolution logic. Refactor segment locator handling to use stable projections and manifest cursors. Migrate tests and data cleanup utilities to support the new model.
BREAKING CHANGE: Database schema for TTS segments is now split into entry and variant tables; all code and consumers must use the new structure. Persisted data and APIs relying on the old `tts_segments` table are incompatible.
Implement strict validation for EPUB TTS segment locators, requiring stable spine coordinates (`spineHref`, `spineIndex`, `charOffset`) and rejecting legacy CFI-only locators. Introduce `segmentKey` as a normalized identity derived from segment text, used for robust merging and deduplication of synthesized and persisted segments. Update database schemas, API routes, and manifest logic to support the new locator format and segmentKey. Add helpers for locator resolution and segmentKey construction, with comprehensive unit tests for identity, normalization, and manifest grouping.
BREAKING CHANGE: Persisted EPUB TTS segment locators must now include stable spine coordinates; legacy CFI-only locators are no longer accepted. Consumers must handle the new `segmentKey` field for segment identity and merging.
Refactor TTS segment identification to support canonical segment keys, decoupling segment IDs from locator and index for more robust deduplication and handoff. Add `segmentKey` to segment types, manifest, and ensure route. Implement natural sorting for EPUB CFI locations and segment locators using new comparison utilities. Update sidebar and manifest helpers to use locator-aware sorting. Add foundational modules for EPUB word highlighting, TTS segment planning, and EPUB handoff logic. Expand types and tests to cover new canonical segment and locator behaviors.
BREAKING CHANGE: TTS segment IDs now support canonical segment keys; APIs and manifest consumers must handle `segmentKey` and updated locator comparison logic.
Introduce configurable segment preloading depth, sentence lookahead, and TTS segment max block length for both PDF and EPUB readers. Add new settings to user preferences, config context, and document settings UI. Refactor TTS segment splitting logic to support per-user max block length and propagate these options through PDF/EPUB adapters and TTS segment generation. Update API, manifest pagination, and segment deduplication for improved performance and correctness. Add tests for new NLP options and manifest logic.
BREAKING CHANGE: TTS segment splitting and manifest APIs now require max block length and preloading parameters; user config schema updated.
Update segment manifest API to group segments by both index and locator
attributes, ensuring distinct segment variants are not merged incorrectly.
Adjust SegmentsSidebar logic to select the most relevant segment per index
based on locator match and recency, improving sidebar accuracy when
multiple locator variants exist for a segment.
Introduce SegmentsSidebar component and supporting reader UI for segment-level
navigation and inspection. Add TTS segments manifest and clear API endpoints to
enable efficient retrieval and management of segment variants. Update TTS
segment schema to include settings_hash for improved lookup and indexing,
and adjust indexes to use settings_hash instead of settings_json. Update
contexts and types to support segment variant display and interaction.
This enhances document navigation and TTS segment management for end users.
Remove legacy TTS segment manifest and audio endpoints in favor of new presigned and fallback audio URL approach. Update segment manifest structure to include `audioPresignUrl` and `audioFallbackUrl` fields, deprecating the previous `audioUrl`. Refactor segment ensure logic and TTS context to utilize the new playback source model. Add server utilities for generating presigned S3 URLs and introduce new API routes for presign and fallback audio retrieval. Clean up obsolete client API functions and types to reflect the new manifest format.
Introduce TTS segment support with new database tables and migrations for both Postgres and SQLite. Implement segment ensure, audio, and manifest API endpoints, segment storage in S3, and segment authorization logic. Update TTS context and client API to use segment-based synthesis and retrieval. Add server-side helpers for segment ID, settings hash, locator normalization, and audio probing. Extend user data cleanup and teardown logic to remove TTS segment objects. Add unit tests for segment helpers.
BREAKING CHANGE: TTS synthesis now uses segment-based storage and APIs; database migrations required.
Move resolveVoices and resolveReplicateVoiceInputKey to a new server-side
voice-resolution module to improve separation of concerns and reduce shared
bundle size. Update all imports and related tests to use the new module.
Remove unused LRUMap and related caches from shared catalog. Update Replicate
cooldown logic to use per-scope LRU cache for improved concurrency handling.
Move getUpstreamStatus and getUpstreamRetryAfterSeconds to a shared utility
module for consistent upstream error handling across TTS endpoints. Strengthen
audiobook chapter API by introducing runtime validation for incoming settings
payloads, ensuring type safety and error reporting for malformed requests.
Replace in-memory Map caches with LRUMap for Replicate voice and schema
lookups, improving memory management and eviction logic.
Align default Replicate model to the versioned Kokoro model across UI, docs,
and server logic. Refactor TTS settings merging for audiobooks to ensure
consistent normalization. Improve Retry-After header handling for upstream
rate limits. Expand Replicate voice resolution to use model schemas when
available, with test coverage for custom and built-in models.
Update documentation to reflect new Replicate defaults, model selection,
and configuration guidance.
- Updated environment variables documentation to include Replicate as a TTS provider option.
- Added Replicate to the sidebar for TTS provider guides.
- Included Replicate as a dependency in package.json and pnpm-lock.yaml.
- Enhanced audiobook chapter generation to normalize native speed settings based on the TTS provider.
- Improved error handling in TTS API routes to provide retry information for rate-limited responses.
- Updated AudiobookExportModal to reflect native speed support for Replicate models.
- Modified SettingsModal to set default model for Replicate.
- Enhanced SpeedControl component to conditionally render native speed controls based on provider support.
- Updated TTSContext to utilize effective native speed for TTS requests.
- Implemented Replicate request handling in the TTS generation logic.
- Added new documentation for configuring Replicate as a TTS provider.
- Move TTS provider resolution and voice-fetch logic into shared catalog and make
remote fetches more resilient (timeouts, abort handling, baseUrl normalization,
treat explicit empty custom-openai responses as valid).
- Add continuation guard to TTS feature set and update API voices endpoint error
logging to better surface auth/session failures.
- Extract and stabilize ebook pipeline and epub adapter:
- Cache prepared EPUB chapters to avoid repeated parsing and handle missing/empty
chapter titles safely.
- Fail early when created chapter lacks a bookId.
- Improve config/preferences handling:
- Replace JSON stringify comparisons with a deepEqual utility to compare defaults.
- Tighten ConfigContext effect dependencies and consolidate synced preference
queuing logic to include additional keys.
- Harden end-to-end test helpers and unit tests:
- Make settings dialog dismissal deterministic (use Enter/Escape and explicit
visibility/enabled checks) and simplify upload retry behavior.
- Add unit test to ensure custom-openai empty voice lists are preserved.
Why: Reduce runtime and test flakiness, centralize TTS logic for easier maintenance,
and make EPUB processing and preference diffing more robust. Breaking changes: none.
- Introduce a shared tts-provider-catalog to centralize provider/model/voice defaults
and feature flags (supportsTtsInstructions, providerSupportsCustomModel, resolveProviderModels,
getDefaultVoices, etc.). Replace ad-hoc provider logic across server and client with catalog calls.
- Replace inline voice/model UI logic in SettingsModal, AudiobookExportModal, TTSContext,
generate server code, and voice hook to use catalog helpers (resolveTtsSettingsViewModel,
supportsTtsInstructions, getDefaultVoices).
- Extract audiobook generation responsibilities into a small client-side pipeline:
- Add createEpubAudiobookSourceAdapter and createPdfAudiobookSourceAdapter adapter modules
to prepare chapters from EPUB/PDF sources.
- Add runAudiobookGeneration and regenerateAudiobookChapter pipeline functions to handle
chapter preparation, progress tracking, request header construction, and retry/abort behavior.
- Wire adapters/pipeline into EPUBContext and PDFContext to simplify and centralize audiobook flow.
- Move config preference helpers out of ConfigContext into dedicated client modules:
- buildSyncedPreferencePatch (lib/client/config/preferences.ts)
- applyConfigUpdate and getVoicePreferenceKey (lib/client/config/updates.ts)
- Use these helpers in ConfigContext to keep update logic small and testable.
- Add TTS settings view model resolver (lib/client/settings/tts-settings.ts) and tests
for the tts-provider catalog and config helpers (tests/unit/tts-provider-catalog.spec.ts).
- Minor usages updated: AudiobookExportModal, SettingsModal, useVoiceManagement, TTSContext,
server tts generation, and various context files to consume the new modules.
Why: Reduce duplication, improve testability, and separate concerns for provider metadata,
UI view-model logic, and audiobook generation flow. Breaking changes: none.
- Removed unused imports and types from TTS route.
- Consolidated TTS buffer generation logic into a new module.
- Implemented caching for TTS audio buffers using LRU cache.
- Updated TTS request handling to support instructions for specific models.
- Refactored audiobook chapter creation to use new TTS generation logic.
- Simplified error handling and response management in TTS API.
- Enhanced client-side logic to manage TTS requests and retries.
- Updated types to reflect changes in TTS request payload structure.
Implement AbortController in ConfigContext, PDFContext, and preference sync to prevent race conditions during session changes or rapid navigation. Refactor document preview routes into shared utilities and add LRU caching for text previews to optimize memory. Update documentation for Better Auth schema ownership and migration workflows. Fix issues with Postgres system user seeding and better-sqlite3 configuration.
Add environment variables for fine-grained control over TTS rate limiting
and Better Auth behavior. Move documentation to external Docusaurus site
with automated deployment workflows.
- TTS rate limiting can now be enabled/disabled via TTS_ENABLE_RATE_LIMIT
- Customizable daily limits for anonymous/authenticated users and IP backstops
- Better Auth rate limiting can be disabled via DISABLE_AUTH_RATE_LIMIT
- Rename library import env vars to IMPORT_LIBRARY_DIRS/DIR
- Add docs-site with Docusaurus and GitHub Actions workflows
- Update README to reference external documentation
Replace privacy popup with PrivacyModal and reorganize auth UI components
Remove signed-out persistence and centralize session handling in useAuthSession
Move document viewers and Kokoro voice helpers into dedicated modules
- replace custom DB adapter with Drizzle setup (SQLite/Postgres schemas) and add `drizzle.config.ts` plus migrations in `drizzle/` and `drizzle_pg/`
- switch better-auth to drizzleAdapter, add auth helpers (`getAuthContext`, `requireAuthContext`, `requireAudiobookOwned`), and make `useAuth`/`useAuthSession` safe no-ops when auth is disabled
- persist documents/audiobooks in DB with ownership checks, unclaimed fallback, and ref-counted deletes; add FS scan helper for no-auth mode
- gate docx-to-pdf, library, voices, whisper, and migration endpoints behind auth when enabled
- add unclaimed data scan/claim flow with `/api/user/claim`, `ClaimDataModal`, and server-side scan/claim helpers
- refactor rate limiting and account deletion to use Drizzle tables (`user_tts_chars`, `user`)
- run migrations via `scripts/migrate-if-auth.mjs` (auto on `pnpm start` + `pnpm migrate`), remove Docker entrypoint and old better-auth migration file
- update README and lockfile for the new migration workflow and dependencies
- Add device ID and IP-based rate limiting to prevent abuse
- Refactor UI components for better header menus and settings
- Update privacy popup with detailed data usage info
- Improve PDF handling and caching to prevent react-pdf warnings
- Update README with new Docker instructions and environment variables
- Implement user sign-in, sign-up, and account management using better-auth
- Add rate limiting for TTS API with daily character limits for authenticated and anonymous users
- Integrate SQLite and PostgreSQL database support for user sessions and data persistence
- Update UI components to include authentication flows, user menu, and privacy popup
- Modify Dockerfile and package.json for new dependencies and entrypoint script
- Bump version to v1.3.0
Add 'force-dynamic' export to audiobook and documents API routes to ensure
dynamic rendering. Remove 'nodejs' runtime export from TTS route for consistency.
Abstracted direct fetch calls across components and contexts into new functions within `src/lib/client.ts`. This provides a consistent and centralized interface for interacting with backend APIs.
- Introduced `src/lib/client.ts` to encapsulate API request logic.
- Standardized audio buffer types (`TTSAudioBuffer`, `TTSAudioBytes`) in `src/types/tts.ts`.
- Moved client-specific request types (`TTSRequestPayload`, `TTSRequestHeaders`, `TTSRetryOptions`) to `src/types/client.ts`.
- Updated API routes and consumer components/contexts to leverage the new client library functions and type definitions.
- Removed `src/utils/audio.ts` as its utility functions are now part of `src/lib/client.ts`.
- Reorganized utility modules from `src/utils` to `src/lib` for clearer separation of concerns.
- Introduced new, dedicated type definitions in `src/types` for improved type safety in configuration and TTS API interactions.
- Replaced `src/types/appConfig.ts` with `src/types/config.ts`.
- Added `src/types/tts.ts` for TTS request payloads, error structures, and retry options.
- Updated module imports across several contexts (`Config`, `EPUB`, `HTML`, `PDF`, `TTS`) and components to reflect the new `lib` and `types` locations.
- Enhanced TTS API request and error handling in `src/app/api/tts/route.ts` and TTS-consuming contexts with explicit types.
- Simplified `ProgressCard`, `ProgressPopup`, and `AudiobookExportModal` components by removing the `isProcessing` prop, centralizing processing state management.
- Streamlined `HTMLContext` by removing `createFullAudioBook` and `isAudioCombining` properties, focusing its scope.
Replaces custom IndexedDB implementation with Dexie ORM, eliminating 850+ lines of
boilerplate code and introducing reactive live queries across all document types.
Transforms document management from imperative refresh patterns to automatic
reactive updates using dexie-react-hooks.
Simplifies TTS backend by removing concurrency semaphore while maintaining
request de-duplication through in-flight tracking. Streamlines document hooks
by removing manual state management and refresh methods.
Updates package dependencies and type definitions to support new database
architecture while maintaining full backward compatibility for existing
documents and settings.
BREAKING CHANGE: Document hooks no longer expose refresh() methods as updates
are now reactive through live queries.
introduce configurable smart sentence splitting with persisted state,
UI toggle, and EPUB/PDF contexts that send continuation metadata.
enhance TTS pipeline to merge cross-page sentences, manage carryover,
and trigger visual page changes during playback for smoother narration.
update README with kokoro quick-start guidance, remove the legacy
issues mapping doc, and add deterministic TTS mocks plus sample audio
for Playwright tests.
Introduce an in-memory LRU cache for TTS audio with configurable
size and TTL via TTS_CACHE_MAX_SIZE_BYTES and TTS_CACHE_TTL_MS.
Return X-Cache headers (HIT/MISS) and set route runtime to nodejs.
Cache key includes provider, model, voice, speed, format, text,
and optional instructions.
Normalize non-Kokoro multi-voice input to the first token while
preserving full voice string in the cache key. Default Deepinfra
model to hexgrad/Kokoro-82M when none is provided.
Fix Deepinfra Kokoro behavior by enforcing single-voice selection:
- ui: only enable multi-select when provider supports >1 voices
- voice utils: Deepinfra max voices set to 1
- tests: gate provider selection and multi-voice tests by CI and
increase timeout for stability
- Introduce voice utils (model detection, voice parsing/weights, limits)
- Enable Kokoro multi-voice strings across OpenAI/Deepinfra/custom providers
- Normalize non-Kokoro voices to single token for SDK calls
- Expose full Kokoro voice list for custom-openai Kokoro models
- Update TTS API to return audio as ArrayBuffer and improve logging
- Add multi-select UI for Kokoro voices with provider-based clamping
- Preserve Kokoro voice strings in TTSContext and coalesce restarts
- Merge multi-sentence quoted dialogue in NLP sentence splitter
- Update tests for single and multi-voice selection flows
Add comprehensive multi-provider TTS support enabling users to choose between OpenAI, Deepinfra, and custom OpenAI-compatible endpoints. Implement provider-specific voice management with automatic voice restoration per provider-model combination, and migrate package manager to pnpm for improved dependency handling.
Key changes:
- Add TTS provider selection (OpenAI, Deepinfra, custom-openai) in settings UI
- Implement provider-specific model and voice lists with dynamic fetching
- Add voice persistence per provider-model combination in savedVoices
- Support Deepinfra models: Kokoro-82M, Orpheus-3B, Sesame-1B with their voice libraries
- Migrate to pnpm with frozen lockfile for reproducible builds
- Update Docker configuration to use pnpm and Deepinfra API defaults
- Add migration logic for existing users to infer provider from stored baseUrl
- Update test helpers and Playwright configuration for Deepinfra API
- Add example docker-compose.yml with Kokoro-FastAPI integration
BREAKING CHANGE: Voice selection is now provider-model specific. Previously saved voices will be migrated to the new savedVoices structure, but users may need to reselect voices if switching providers.
