Reported in issue #1973: a scheduled liberate run re-requested a content license
for the same 59 titles every 15 minutes, 1397 refused requests in six hours,
because nothing about a failed PDF was remembered and the PDF step asked Audible
afresh every time.
The two download paths have been converging for a while - a PDF is now named and
placed by the audiobook path's own logic, and verified like one - and every part
of this bug lives where that stopped short.
Both steps ask Audible for the same license. The request asks for pdf_url
alongside the content reference, and LicenseInfo dropped it, so DownloadPdf
turned round and requested an identical license to read the field the first
response had already returned. Carry PdfUrl on LicenseInfo and give both steps
one ILicensedDownload contract: a license may be supplied to a step, and the one
a step ended up using is published for the next step for the same title. The CLI
and the GUI queue hand it on, so a title costs one license request per run
however many steps want something from it. A carried license is retried once
with a fresh one if it does not work, since Audible's links are signed and a long
decrypt can run between the two steps.
Where the audiobook step obtained no license there is nothing to hand on and the
supplement step does not run, which deletes a bug rather than guarding it:
Completed fires from a finally, so a refused audio download was followed at once
by a PDF request that reproduced the refusal.
Error now means the same for a PDF as for a book. The audiobook step has always
skipped LiberatedStatus.Error through AudioExists, and NeedsPdfDownload agrees,
but DownloadPdf selected on PdfExists and so retried an errored PDF forever. A
license that is granted and carries no pdf_url - the 'No PDF URL available' in
the report - is Audible saying the title has no PDF, and is written off that same
way instead of failing identically on every run. It stays resettable by
everything that resets a book: --force, a named title, Set PDF Not Downloaded.
Refusals now reach ProcessSingleAsync, which has always recorded them for
whichever step throws one; DownloadPdf swallowed everything and recorded nothing.
It keeps swallowing what the classifier does not recognise, which is what stopped
a missing PDF from taking the app down with it.
A bulk CLI run leaves alone the titles the last scan did not find, by the same
Downloadable rule every multi-title path in the app already uses, and the PDF
back-fill pass waits on a refused title just as the first pass does. --force and
a named title still attempt everything.
Co-authored-by: rmcrackan <rmcrackan@gmail.com>
Records every successful audiobook download in the library database (a new
DownloadHistory table) and, when the user opts in, stops downloading once the
rolling 24 hour window is full.
The history lives in the database rather than a file under LibationFiles
because in Docker only the database is on a volume; a file there is discarded
on every container restart.
The limit is checked immediately before each book downloads, never at queueing
time, so a full queue stays full and the user can raise or disable the limit
mid-run. When nothing in the queue can proceed the queue pauses and re-checks
every 15 seconds, recomputing settings, history and clock from scratch, so a
queue left running for days drip-feeds itself as downloads age out. The CLI
never waits: it skips covered titles and reports a count.
Co-authored-by: rmcrackan <rmcrackan@gmail.com>
- Persist settings: enabled, server URL, API token, library/folder IDs
- Add AudiobookshelfApiService for login, library listing, and multipart upload
- Add UploadToAudiobookshelf post-download processable
- Add settings tab to WinForms and Avalonia with library/folder dropdowns
- Match Avalonia layout to WinForms with aligned columns
All processables are now created with an instance of Configuration, and they use that instance's settings.
Added Configuration.CreateEphemeralCopy() to clone Configuration without persistence.
- Remove instance queue. This is a database, after all, and is designed to be accessed and written to concurrently
- Reduce the number of calls to DbContexts.Create()
- Ensure that no LibationContext remains open across an await boundary. Multithread context access is the most likely culprit for past issues.
- Make all Update UserDefinedItem methods asynchronous.
