public function add($author)
{
if (is_string($author)) {
$author = Author::firstOrCreate(['name' => $author]);
}
debug('No books for this author');
$authorData = $this->authorSearchService->find($author->name, true);
if ($authorData->isEmpty()) {
throw new AuthorNotFoundException("Unable to find {$author}");
}
$authorData = $authorData->first();
$googleBookIds = $this->getGoogleBookIds($authorData);
$existingBooks = Book::whereIn('google_books_id', $googleBookIds)->get();
$this->createMissingBooks($author, $authorData, $existingBooks);
return $author;
}
