#[derive(Debug, Copy, Clone)]
pub struct GutenbergFileEntry {
pub file_link_id: i32,
pub file_type_id: i32,
}
pub struct Book {
pub publisher_id: i32,
pub title_id: i32,
pub rights_id: i32,
pub gutenberg_book_id: usize,
pub date_issued: String,
pub num_downloads: i32,
pub language_ids: Vec<usize>,
pub subject_ids: Vec<usize>,
pub author_ids: Vec<usize>,
pub bookshelf_ids: Vec<usize>,
pub files: Vec<GutenbergFileEntry>,
}