/// <summary>
/// Merges books with existing ones in the database, and returns remaining books that were not merged.
/// </summary>
async Task <DbBook[]> MergeAsync(DbBook[] books, CancellationToken cancellationToken = default)
{
var list = new List <DbBook>(books.Length);
foreach (var book in books)
{
if ((book.PrimaryName != null || book.EnglishName != null) &&
(book.TagsArtist?.Length > 0 || book.TagsCircle?.Length > 0))
{
var result = await _client.SearchEntriesAsync(new SimilarQuery(book), cancellationToken);
var entry = result.Items?.FirstOrDefault();
do
{
if (entry?.Value == null)
{
goto add;
}
entry.Value.MergeFrom(book);
}while (!await entry.TryUpdateAsync(cancellationToken));
_count.Labels("dynamic").Inc();
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation($"Merged book {FormatBook(book)} into similar book {FormatBook(entry.Value)}.");
}
continue;
}
add:
list.Add(book);
_count.Labels("skipped").Inc();
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation($"Merge skipping for book {FormatBook(book)}.");
}
}
return(list.ToArray());
}
async Task <IDbEntry <DbUser> > GetByIdAsync(ulong id, CancellationToken cancellationToken = default)
{
var result = await _client.SearchEntriesAsync(new UserQuery(id), cancellationToken);
return(result.Items.Length == 0 ? null : result.Items[0]);
}