* feat: auto-download new items from subscribed OPDS catalogs
Add opt-in auto-download per OPDS catalog. When enabled, new publications
are downloaded on app startup and pull-to-refresh. Dedup via Atom <id>.
- Extend foliate-js parser to surface entry id/updated fields
- Add subscription state to OPDSCatalog type
- New headless opdsSyncService with navigation feed crawling
- Auto-download toggle in CatalogManager UI
- Wire sync into startup and pull-to-refresh hooks
- 16 new test cases
Built with an AI code agent.
Closes#3836
* chore: point foliate-js submodule to fork with OPDS id/updated fields
CI needs to fetch the foliate-js commit that adds id and updated field
extraction from OPDS feeds. Point submodule URL to our fork where the
commit is pushed.
* feat(opds): rearchitect auto-download with two-phase OPDS sync
Replaces the monolithic opdsSyncService from #3837 with a separated
discovery + acquisition pipeline. Subscription state lives in
per-catalog JSON files under Data/opds-subscriptions/, decoupled from
catalog config.
Discovery (services/opds/feedChecker.ts) resolves a catalog URL down
to its "by newest" feed via three detection tiers — rel="http://opds-
spec.org/sort/new" (Calibre / Calibre-Web), title heuristics
("Newest", "Recently Added", "Latest"), and href patterns
(?sort_order=release_date for Project Gutenberg, /new-releases for
Standard Ebooks). It then walks only that feed plus rel=next
pagination, never the full navigation tree. When no by-newest feed is
found, the catalog is skipped with a warning instead of silently
mirroring everything.
Acquisition link selection filters to safe rels
(acquisition / acquisition/open-access — drops buy / borrow /
subscribe / sample / indirect), prefers open-access when both rels
are present, then ranks by format tier:
0 Advanced EPUB / EPUB 3 (link title, .epub3 href, version=3.x)
1 plain EPUB
2 MOBI / AZW / AZW3
3 PDF / CBZ
4 anything else
Within a tier, ties resolve by feed order. When the upstream omits or
mis-declares (octet-stream) the link's media type, format is inferred
from href extension and link title. Entries that appear in both
feed.publications and a group are deduped within the same batch.
Orchestration (services/opds/autoDownload.ts) runs catalogs
sequentially — per-catalog concurrency already caps parallel downloads
at 3, so a parallel fan-out across catalogs would be N×3 simultaneous
requests on cellular. Pending and retry items are deduped by entryId,
and entries still inside their exponential-backoff window are skipped
instead of re-attempted (avoids appending duplicate failedEntries
records). Filenames come from the last path segment, capped at 200
chars, with a try/catch around decodeURIComponent for malformed
%-sequences.
Hook (hooks/useOPDSSubscriptions.ts): startup, 5-minute interval, and
'check-opds-subscriptions' event triggers. Toggling auto-download on
fires the event so the sync runs immediately. Newly imported books
are queued for cloud upload via transferManager when the user is
logged in and settings.autoUpload is on, mirroring the manual OPDS
download path. 'opds-sync-complete' is dispatched after every sync so
listening UI can refresh without polling. loadSubscriptionState
self-heals duplicate failedEntries from older state files.
The submodule URL is reverted to readest/foliate-js (the changes
needed for OPDS id/updated extraction are already in main), and
OPDSCatalog is trimmed to only the autoDownload field.
Verbose [OPDS]-prefixed debug logs cover the whole pipeline: feed
fetch → resolve → discovery → per-item download (with magic-byte
dump of the saved file) → import → cloud upload queueing.
34 new tests across opds-feed-checker, opds-auto-download,
opds-subscription-state, opds-types.
Closes#3836.
Supersedes #3837.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Johannes Mauerer <johannes@mauerer.info>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Huang Xin
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