public async Task <RetrievedBookInfoDto> FindBookByIsbnAsync(string isbn, int organizationId)
{
var bookAlreadyExists = _booksDbSet
.Any(book =>
book.OrganizationId == organizationId &&
book.Code == isbn);
_bookServiceValidator.CheckIfBookAlreadyExists(bookAlreadyExists);
var result = await _bookInfoService.FindBookByIsbnAsync(isbn);
_bookServiceValidator.CheckIfBookWasFoundByIsbnFromExternalProvider(result);
var retrievedBookDto = MapBookInfoToDto(result);
return(retrievedBookDto);
}
