gadl/library.ts

import { Database } from "./database";

export type Book = {
  id: number;
  platform: "dmm-books" | "google-play-books";
  readerUrl: string;
};

export function createLibrary(db: Database) {
  return {
    async add(readerUrl: string) {
      const platform = "dmm-books";

      await db.run(
        `insert into books(reader_url, platform_id) values(?, (select id from platforms where name = ?))`,
        readerUrl,
        platform,
      );
    },
    async delete(id: number) {
      await db.run(`delete from books where id = ?`, id);
    },
    async get(id: number): Promise<Book | undefined> {
      const book: Book | undefined = await db.get(
        `select books.id, platforms.name as platform, books.reader_url as readerUrl from books left join platforms on books.platform_id = platforms.id where books.id = ?`,
        id,
      );

      return book;
    },
    async getBooks(): Promise<Array<Book>> {
      const books: Array<Book> = await db.all(
        `select books.id, platforms.name as platform, books.reader_url as readerUrl from books left join platforms on books.platform_id = platforms.id`,
      );

      return books;
    },
  };
}