Switch mp3 transcoding to output a seekable temp file instead of piping to stdout.
This allows ffmpeg to backpatch the Xing/Info header with correct total-duration
metadata, which is required for HTML5 audio elements to handle VBR mp3 playback
accurately. Prevents playback issues caused by missing or incorrect duration,
such as premature or stalled `ended` events.
Update documentation to specify that OpenReader uses the Kokoro voice set
for Kokoro models and the standard OpenAI voices for other models when no
voice listing endpoint is available. Improves clarity on provider fallback
behavior.
Align non-kokoro custom-openai models to use the canonical OpenAI voice set
instead of a separate custom set. Updates logic and tests to reflect this
standardization for improved consistency across OpenAI-compatible providers.
Avoid bootstrapping anonymous sessions when users are on sign-in or sign-up
pages to prevent overwriting account-scoped preferences after login. Adjust
loading logic to account for this scenario.
Update documentation to specify that only the speech endpoint is required for
OpenAI-compatible TTS providers, with voice listing now optional and auto-discovered.
Document support for multiple audio formats (mp3, wav, ogg, flac) and note that
API keys are optional for local or unauthenticated servers. Add Supertonic to
the list of compatible implementations and improve troubleshooting guidance.
feat(tts): support OpenAI-compatible servers that emit wav instead of mp3
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
* **New Features**
* Normalize all incoming TTS audio to MP3 so stored/served audio is consistently MP3.
* Broader discovery of voices from OpenAI‑compatible endpoints by probing multiple voice routes and respecting provider defaults.
* **Reliability**
* Retry flow when providers reject explicit response format to improve compatibility.
* Improved audio format detection, safer transcoding with cancellation and cleanup, and logging when normalization occurs.
* **Tests**
* Added unit tests covering audio format detection across multiple codecs.
* **Documentation**
* Added a Supertonic TTS provider setup guide.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Update OpenAI SDK instantiation to provide a placeholder apiKey when none is
supplied, enabling support for local or unauthenticated OpenAI-compatible
TTS servers. Ensure Authorization header is cleared when not needed.
Include documentation for configuring the Supertonic TTS provider. Update
the main TTS providers list and sidebar to reference the new guide, ensuring
users can easily find setup instructions for Supertonic.
Update audio format sniffing to require a full 10-byte ID3 header for mp3 detection and add stricter validation of MPEG frame headers to avoid false positives. Refactor ffmpeg process spawning to register abort listeners before module import, ensuring abort signals are handled promptly and preventing orphaned processes. Expand tests to cover edge cases in mp3 header detection.
The wav->mp3 normalization path re-encoded pristine high-fidelity TTS (e.g.
Supertonic's 44.1 kHz wav) at 64k CBR, which lowpasses hard and introduces
high-frequency artifacts that cause listening fatigue. Switch the live/segment
transcode to libmp3lame VBR -q:a 2 (~170-210 kbps for speech), effectively
transparent. The audiobook export still re-encodes to 64k for file size.
extractVoiceNames collapsed an explicit `{ voices: [] }` response to null,
which broke the existing contract of treating an empty list as a valid
"no voices" answer. Distinguish a genuinely empty array (honored as []) from
an array whose items yielded no usable names (unrecognized shape -> null, so
the next endpoint or defaults apply).
Distribute replacement characters across original URL spans to preserve positional mapping in highlights. In sentence alignment, add fallback to avoid misaligned word highlights when the sentence cannot be located, ensuring robustness in TTS word highlighting.
Introduce `normalizeToMp3` utility to convert wav/ogg audio buffers from TTS providers
to mp3, ensuring consistent mp3-only handling in cache and pipelines. Add logic to
detect and adapt to OpenAI-compatible servers that do not support explicit
`response_format`, falling back to default output and normalizing as needed.
Refactor voice resolution to probe multiple common endpoints and robustly extract
voice/style names from various payload shapes, improving compatibility with custom
OpenAI-compatible servers.
- Add `audio-format.ts` for audio normalization utilities
- Add tests for audio format normalization
- Update TTS provider request logic to apply normalization and handle response format negotiation
- Enhance voice endpoint probing and extraction logic for custom servers
Refactor EPUB and HTML word highlighting to use a shared, position-preserving
text normalization pipeline for mapping TTS alignment offsets to DOM positions.
Replace the previous fuzzy token-matching logic with a direct char→DOM map
based on the canonical "audio" text form, ensuring highlights stay in sync
across languages and with Unicode-aware hyphenation handling.
- Add `highlight-char-map.ts` for shared normalization logic
- Update normalization to handle Unicode hyphenation consistently across
compute, client, and shared layers
- Remove unused fuzzy token mapping and cache logic from EPUB highlighting
- Update tests for new highlight mapping and normalization behavior
BREAKING CHANGE: Removes legacy fuzzy token-based word highlight mapping in favor of direct char offset mapping; highlight cache and tokenization APIs are removed.
Enhance EPUB TTS canonical windowing by guarding against stale async completions
during rapid page turns, preventing outdated segment/highlight state from
overwriting the active page. Update SegmentsSidebar to robustly handle errors
in canonicalization, ensuring sidebar state is cleared on failure and avoiding
residual mappings from previous pages. Refine canonical window documentation to
clarify non-overlapping segment partitioning per page. Add a language-aware
cache test to verify correct canonical plan isolation across languages.
Consolidate EPUB TTS segment planning around a single canonical windowing model.
Introduce `epub-canonical-window.ts` to provide stable, viewport-independent
segment windows for both playback and sidebar. Refactor segment planning,
prefetching, and playback handoff to use canonical ordinals and keys, ensuring
that segments straddling page breaks are uniquely identified and never replayed
across pages. Update TTSContext, SegmentsSidebar, and related hooks to support
windowed canonical segments and precise ordinal continuity. Extend types and
interfaces to carry canonical segment metadata and windowing context.
Add comprehensive unit tests for canonical window selection, segment
materialization, and cache behavior.
BREAKING CHANGE: EPUB TTS segment planning, playback, and sidebar now rely on
canonical windowing, affecting segment key generation and playback logic.
Replace all references to `openssl rand -hex 32` with `openssl rand -base64 32`
in environment variable examples and documentation. This change standardizes
the recommended method for generating strong random secrets, improving
compatibility and clarity for users configuring authentication and cron secrets.
* refactor(user): overhaul user data cleanup and export for cascading deletes and TTS segment support
Revise user data cleanup logic to ensure proper cascading deletion of user-related
database rows and S3 objects, including shared document and preview artifacts.
Introduce explicit checks for last ownership before removing shared resources.
Add TTS segment cache and audio cleanup to document and user deletion flows.
Expand user data export to include TTS segment entries and audio, job events,
document settings, and linked auth sessions. Update schema with ON DELETE CASCADE
for userTtsChars and userJobEvents. Add new migration scripts and comprehensive
unit tests for cleanup and export scenarios.
* test(user): expand cleanup and export coverage for shared docs and TTS segment files
Add tests for user data cleanup with shared document ownership and for TTS segment
variant export scenarios, including cases with duplicate audio keys and storage
disabled. Refactor cleanup logic to use document row types and transactional
ownership removal with last-owner checks. Update TTS segment cache clearing to
report deleted segment count by unique entry. Adjust export logic to always
include all TTS segment variants and conditionally export file buckets based on
storage availability. Update migration to use NOT VALID/VALIDATE for new
cascading constraints.
* refactor(documents): centralize owned document deletion and add mutation locking
Introduce `deleteOwnedDocument` utility to encapsulate all logic for removing a user's ownership of a document, including TTS segment cache cleanup, preview artifact removal, and S3 blob deletion for last-owner cases. Add `withDocumentMutationLock` to serialize concurrent mutations on the same document, using advisory locks in Postgres and a local queue fallback. Refactor all API routes and user data flows to use these utilities, ensuring transactional safety and preventing race conditions during document deletion or transfer. Update tests for new flows and add coverage for document cleanup sequencing and locking behavior.
* feat(data): enhance anonymous claim to support document settings and TTS segment copy
Expand the anonymous data claim process to include document settings transfer and TTS segment S3 prefix copying. Remove foreign key constraints from user_tts_chars to allow non-user buckets. Update claim modal and onboarding flow to display claimed document settings. Refactor TTS char count transfer to merge all dates and fix upsert logic. Add S3 copy utility for TTS segments and corresponding tests. Update migrations and schema to reflect relaxed constraints.
* refactor(data): improve error handling and rollback for document and TTS segment operations
Enhance robustness of document deletion and TTS segment transfer by improving
error logging, partial rollback, and degraded state reporting. Add best-effort
cleanup and recovery mechanisms to prevent orphaned data and ensure diagnostic
information is captured for unexpected failures. Update user data cleanup to
log and swallow restoration errors without masking primary failures. Refine
claim logic to handle unmapped TTS audio keys safely.
* refactor(data): unify document mutation locking and transaction handling
Replace mutation-lock with document-lock to centralize document mutation
serialization and database transaction management. Introduce runInDbTransaction
utility to abstract SQLite/Postgres transaction differences. Update document
deletion, user data cleanup, and rate limiter logic to delegate transaction
handling and locking to shared helpers. Remove dialect-specific branching and
inline transaction logic for improved maintainability and testability.
BREAKING CHANGE: withDocumentMutationLock is removed in favor of withDocumentLock and runInDbTransaction
* fix(documents): improve rollback error handling in deleteOwnedDocument
Enhance error handling during document deletion by ensuring that failures
in restoring document ownership do not obscure the original error. Log
degraded events when ownership restoration fails after a deletion error,
providing additional context for debugging and monitoring. This change
improves reliability and traceability of document deletion operations.
* feat(tasks): introduce scheduled task engine and admin UI for background jobs
Add a general-purpose scheduled task system with a persistent registry and status tracking, supporting background maintenance jobs such as orphaned blob reaping, expired upload cleanup, job event pruning, and TTS usage retention. Implement a new `scheduled_tasks` table, task engine, and handlers for each maintenance operation. Integrate an admin UI panel for monitoring, manual runs, and configuration of tasks. Update document and user data cleanup flows to delegate shared blob and preview deletion to the scheduled reaper. Add Vercel cron integration for serverless environments.
BREAKING CHANGE: Document and user storage cleanup now relies on background scheduled tasks for shared blob and preview deletion; immediate inline deletion is no longer performed.
* refactor(user): streamline document and TTS segment transfer logic
Simplify user document transfer by consolidating storage and metadata handling. Remove inline deletion of shared blobs; only metadata is moved, and TTS segment transfer is controlled via options. Add `skipStorage` option for test scenarios to bypass storage operations. Update tests to reflect new transfer behavior.
* chore(instrumentation): delegate node-specific setup to separate module
Move Node.js-specific instrumentation logic to a dedicated file. Update
registration to dynamically import the node module only when running in a
Node.js environment. This separation clarifies environment-specific behavior
and improves maintainability.
* ci(config): update scheduled task cron to run daily at midnight
Change cron schedule for /api/admin/tasks/tick from hourly to once daily at
midnight to reduce task frequency and align with updated operational
requirements.
* refactor(tasks): enforce positive interval and improve scheduled task updates
Add database-level check constraints to ensure scheduled task intervals are always
positive for both Postgres and SQLite. Update admin API and UI to support sub-minute
intervals and stricter validation. Refactor scheduled task update logic to upsert
rows, ensuring tasks can be updated even if not yet present in the database.
Improve temporary upload cleanup to delete in paginated batches. Enhance tests to
cover new constraints and update behaviors.
* chore(docker): remove ffmpeg-static from runtime dependencies in image build
Eliminate ffmpeg-static from the production node_modules during Docker image
assembly to streamline the deployment artifact and avoid bundling unused binaries.
* refactor(admin): redesign task panel UI with Card layout and running indicator
Replace the bordered div layout in AdminTasksPanel with the Card component for
improved visual hierarchy. Add a dynamic running indicator using a custom
RunningDot component to clearly show active tasks. Update control alignment and
button states for better usability. Remove Badge-based status display in favor
of a more streamlined appearance.
* feat(tasks): add document blob lease for safe orphan reaping and improve scheduled task robustness
Introduce a document blob lease mechanism to prevent race conditions between document registration and orphaned blob cleanup. The new `document_blob_leases` table ensures that only one process can claim a document blob for mutation or deletion at a time. Update the orphan reaper to acquire a lease before deleting blobs and to re-check for ownership after acquiring the lease, avoiding accidental deletion of in-flight uploads.
Enhance scheduled task infrastructure with per-task fencing tokens to prevent stale runners from overwriting newer results, enforce runtime limits with abort signals, and expose scheduler mode and minimum interval to the admin panel and API. Adjust task handlers to accept a context with abort support, and update documentation and environment variable references for the new cron secret and scheduling behavior.
BREAKING CHANGE: Scheduled tasks now require a `document_blob_leases` table and updated handler signatures. Vercel deployments must set `CRON_SECRET` for scheduled maintenance.
* refactor(admin): add loading skeleton to tasks panel for improved UX
Introduce a TasksSkeleton component to display animated placeholders while scheduled tasks are loading. Replace direct rendering of empty task rows with the skeleton when data is pending, enhancing perceived responsiveness and user experience in the admin tasks panel.
* test: clean up playwright anonymous users
* test: make blob lease expiry deterministic
* fix(documents): improve blob lease release error handling and test stale lease scenario
Handle errors during blob lease release by logging warnings instead of allowing them to mask original results. Update unit tests to verify that releasing a stale lease does not affect a replacement lease.
* refactor(documents): implement exponential backoff with jitter for blob lease retries
Replace fixed retry delay with capped exponential backoff and jitter to reduce
contention and thundering herd effect when acquiring document blob leases. This
improves lease acquisition fairness and efficiency under high load.
Adjust language input resolution in TTS generation to ensure Replicate Kokoro
model receives the appropriate language code mapping even when the language
property is absent or falsy. Update tests to cover this scenario and verify
correct input construction.
Eliminate documentation of TTS and compute PDF parsing rate limiting options from the environment variables reference, as these are managed exclusively via runtime configuration in the admin UI and do not correspond to environment variables. This clarifies the distinction between environment-based and runtime-managed settings.
Update provider seeding logic and documentation to allow creation of admin/shared providers without requiring an API key. Adjust environment variable handling so that a blank or missing API_KEY is valid when API_BASE is set, enabling support for upstream TTS providers that do not require authentication. Remove defaulting to 'none' for API keys in API routes and ensure headers are omitted when no key is present. Add and update tests to verify correct handling of keyless providers.
BREAKING CHANGE: Providers can now be seeded without an API key; API_KEY is no longer required if API_BASE is set. Existing deployments relying on a non-empty API_KEY for seeding should review their environment configuration.
Update preference normalization logic to explicitly reject arrays when
validating record types, ensuring only plain objects are accepted. Adjust
ConfigProvider effect conditions for clarity and correctness. Add unit tests
verifying that arrays are not accepted as valid preference records or saved
voices.
Implement logic to resolve and inject Replicate Kokoro model-specific language
codes based on language tag and voice, using new mapping utilities. Update
`buildReplicateInput` to set `language_code` for the built-in Kokoro model.
Expand language utilities with code mapping and expose `resolveReplicateKokoroLanguageCode`.
Enhance tests to cover language code resolution and input mapping for Replicate
Kokoro, and verify language input key discovery for built-in models.
Move provider normalization logic into a dedicated module to ensure consistent
handling of provider defaults and user preference inheritance across client and
server. Update layout components to mount ConfigProvider only at the shared
layout level, preventing unnecessary remounts and hydration issues during
navigation. Adjust app config defaults so user provider settings are empty by
default, always inheriting the admin-configured provider unless explicitly set.
Add tests for normalization and sync logic to ensure robust provider resolution.
Add multilingual reader and TTS support
- Detect, normalize, persist, and expose document language across EPUB, PDF, HTML, TTS segment, and audiobook workflows.
- Forward supported language inputs to TTS providers, warn on voice/document language mismatches, and prevent incompatible Kokoro voice selections.
- Centralize Unicode-aware token alignment so EPUB, HTML, and PDF highlighting handles multilingual text, including Japanese matching.
- Standardize shared select, checkbox, button, input, menu, and popover primitives across reader, settings, admin, authentication, and public UI surfaces.
- Update README, introduction docs, and landing-page copy to describe multilingual narration and highlighting.
Remove internal selectedVoices state and use a memoized value based on the voice
prop to determine the selected voices. Avoid side effects on selection display,
ensuring that voice selection persists even when available voices are refetched.
This addresses issues where transient backend states could cause unwanted resets
to the first voice option.
Update introduction documentation and README to consistently refer to
OpenReader as "open-source" and highlight its multilingual capabilities.
Refine language segmentation example in multilingual sample text and
expand test coverage for language settings. Adjust TTS segment manifest
to normalize language tags, improve document language update logic, and
fix provider/model compatibility checks for instructions and language
input. Enhance reliability of language support detection for TTS
generation and Replicate provider integration.
Add a fast linear scan to resolve exact token sequence highlights before
falling back to the fuzzy window search, significantly improving
performance for large documents. Update unit tests to verify that
exact matches are found efficiently without invoking expensive
comparisons.
Expand README and introduction to highlight multilingual features,
including language-aware narration and highlighting. Update landing
page to reflect multilingual capabilities in descriptions, keywords,
and UI labels.
Eliminate the Playwright test matrix to run all browser projects in a single job.
Consolidate report artifact naming and streamline workflow configuration for
faster and more maintainable CI execution.
Move pdf.js worker and standard font resolution logic into dedicated
utility functions for improved maintainability and clarity. Replace
inline workerSrc setup with a reusable configurePdfjsNodeRuntime helper.
Update Next.js config to use a shared asset trace list for pdf.js runtime
files, reducing duplication and simplifying future updates.
Add 'pdfjs-dist' to serverExternalPackages in Next.js config to prevent bundling,
ensuring runtime resolution of on-disk assets like standard_fonts. Update
tracing includes for API preview route to explicitly cover worker and font
resources loaded dynamically.
