private List <CandidateEdition> GetDbCandidates(LocalEdition localEdition, bool includeExisting)
{
// most general version, nothing has been specified.
// get all plausible authors, then all plausible books, then get releases for each of these.
var candidateReleases = new List <CandidateEdition>();
// check if it looks like VA.
if (TrackGroupingService.IsVariousAuthors(localEdition.LocalBooks))
{
var va = _authorService.FindById(DistanceCalculator.VariousAuthorIds[0]);
if (va != null)
{
candidateReleases.AddRange(GetDbCandidatesByAuthor(localEdition, va, includeExisting));
}
}
var authorTags = localEdition.LocalBooks.MostCommon(x => x.FileTrackInfo.Authors) ?? new List <string>();
if (authorTags.Any())
{
foreach (var authorTag in authorTags)
{
var possibleAuthors = _authorService.GetCandidates(authorTag);
foreach (var author in possibleAuthors)
{
candidateReleases.AddRange(GetDbCandidatesByAuthor(localEdition, author, includeExisting));
}
}
}
return(candidateReleases);
}
public IEnumerable <CandidateEdition> GetRemoteCandidates(LocalEdition localEdition, IdentificationOverrides idOverrides)
{
// TODO handle edition override
// Gets candidate book releases from the metadata server.
// Will eventually need adding locally if we find a match
List <Book> remoteBooks;
var seenCandidates = new HashSet <string>();
var isbns = localEdition.LocalBooks.Select(x => x.FileTrackInfo.Isbn).Distinct().ToList();
var asins = localEdition.LocalBooks.Select(x => x.FileTrackInfo.Asin).Distinct().ToList();
var goodreads = localEdition.LocalBooks.Select(x => x.FileTrackInfo.GoodreadsId).Distinct().ToList();
// grab possibilities for all the IDs present
if (isbns.Count == 1 && isbns[0].IsNotNullOrWhiteSpace())
{
_logger.Trace($"Searching by isbn {isbns[0]}");
try
{
remoteBooks = _bookSearchService.SearchByIsbn(isbns[0]);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping ISBN search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
}
if (asins.Count == 1 &&
asins[0].IsNotNullOrWhiteSpace() &&
asins[0].Length == 10)
{
_logger.Trace($"Searching by asin {asins[0]}");
try
{
remoteBooks = _bookSearchService.SearchByAsin(asins[0]);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping ASIN search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
}
if (goodreads.Count == 1 &&
goodreads[0].IsNotNullOrWhiteSpace())
{
if (int.TryParse(goodreads[0], out var id))
{
_logger.Trace($"Searching by goodreads id {id}");
try
{
remoteBooks = _bookSearchService.SearchByGoodreadsId(id);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping Goodreads ID search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
}
}
// If we got an id result, or any overrides are set, stop
if (seenCandidates.Any() ||
idOverrides?.Edition != null ||
idOverrides?.Book != null ||
idOverrides?.Author != null)
{
yield break;
}
// fall back to author / book name search
var authorTags = new List <string>();
if (TrackGroupingService.IsVariousAuthors(localEdition.LocalBooks))
{
authorTags.Add("Various Authors");
}
else
{
authorTags.AddRange(localEdition.LocalBooks.MostCommon(x => x.FileTrackInfo.Authors));
}
var bookTag = localEdition.LocalBooks.MostCommon(x => x.FileTrackInfo.BookTitle) ?? "";
// If no valid author or book tags, stop
if (!authorTags.Any() || bookTag.IsNullOrWhiteSpace())
{
yield break;
}
// Search by author+book
foreach (var authorTag in authorTags)
{
try
{
remoteBooks = _bookSearchService.SearchForNewBook(bookTag, authorTag);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping author/title search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
}
// If we got an author/book search result, stop
if (seenCandidates.Any())
{
yield break;
}
// Search by just book title
try
{
remoteBooks = _bookSearchService.SearchForNewBook(bookTag, null);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping book title search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
// Search by just author
foreach (var a in authorTags)
{
try
{
remoteBooks = _bookSearchService.SearchForNewBook(a, null);
}
catch (GoodreadsException e)
{
_logger.Info(e, "Skipping author search due to Goodreads Error");
remoteBooks = new List <Book>();
}
foreach (var candidate in ToCandidates(remoteBooks, seenCandidates, idOverrides))
{
yield return(candidate);
}
}
}
public List <CandidateEdition> GetRemoteCandidates(LocalEdition localEdition)
{
// Gets candidate book releases from the metadata server.
// Will eventually need adding locally if we find a match
var watch = System.Diagnostics.Stopwatch.StartNew();
List <Book> remoteBooks = null;
var candidates = new List <CandidateEdition>();
var goodreads = localEdition.LocalBooks.Select(x => x.FileTrackInfo.GoodreadsId).Distinct().ToList();
var isbns = localEdition.LocalBooks.Select(x => x.FileTrackInfo.Isbn).Distinct().ToList();
var asins = localEdition.LocalBooks.Select(x => x.FileTrackInfo.Asin).Distinct().ToList();
try
{
if (goodreads.Count == 1 && goodreads[0].IsNotNullOrWhiteSpace())
{
if (int.TryParse(goodreads[0], out var id))
{
_logger.Trace($"Searching by goodreads id {id}");
remoteBooks = _bookSearchService.SearchByGoodreadsId(id);
}
}
if ((remoteBooks == null || !remoteBooks.Any()) &&
isbns.Count == 1 &&
isbns[0].IsNotNullOrWhiteSpace())
{
_logger.Trace($"Searching by isbn {isbns[0]}");
remoteBooks = _bookSearchService.SearchByIsbn(isbns[0]);
}
// Calibre puts junk asins into books it creates so check for sensible length
if ((remoteBooks == null || !remoteBooks.Any()) &&
asins.Count == 1 &&
asins[0].IsNotNullOrWhiteSpace() &&
asins[0].Length == 10)
{
_logger.Trace($"Searching by asin {asins[0]}");
remoteBooks = _bookSearchService.SearchByAsin(asins[0]);
}
// if no asin/isbn or no result, fall back to text search
if (remoteBooks == null || !remoteBooks.Any())
{
// fall back to author / book name search
string authorTag;
if (TrackGroupingService.IsVariousAuthors(localEdition.LocalBooks))
{
authorTag = "Various Authors";
}
else
{
authorTag = localEdition.LocalBooks.MostCommon(x => x.FileTrackInfo.AuthorTitle) ?? "";
}
var bookTag = localEdition.LocalBooks.MostCommon(x => x.FileTrackInfo.BookTitle) ?? "";
if (authorTag.IsNullOrWhiteSpace() || bookTag.IsNullOrWhiteSpace())
{
return(candidates);
}
remoteBooks = _bookSearchService.SearchForNewBook(bookTag, authorTag);
if (!remoteBooks.Any())
{
var bookSearch = _bookSearchService.SearchForNewBook(bookTag, null);
var authorSearch = _bookSearchService.SearchForNewBook(authorTag, null);
remoteBooks = bookSearch.Concat(authorSearch).DistinctBy(x => x.ForeignBookId).ToList();
}
}
}
catch (SkyHookException e)
{
_logger.Info(e, "Skipping book due to SkyHook error");
remoteBooks = new List <Book>();
}
foreach (var book in remoteBooks)
{
// We have to make sure various bits and pieces are populated that are normally handled
// by a database lazy load
foreach (var edition in book.Editions.Value)
{
edition.Book = book;
candidates.Add(new CandidateEdition
{
Edition = edition,
ExistingFiles = new List <BookFile>()
});
}
}
watch.Stop();
_logger.Debug($"Getting {candidates.Count} remote candidates from tags for {localEdition.LocalBooks.Count} tracks took {watch.ElapsedMilliseconds}ms");
return(candidates);
}