library/lib/books.ts

import sqlite3 from "sqlite3";

const DATABASE_PATH = "catalogue.db";

export async function getAllBooks() {
  const database = new sqlite3.Database(DATABASE_PATH, sqlite3.OPEN_READONLY);

  const books = new Promise<SimpleBook[]>((resolve, reject) => {
    database.all(
      "SELECT title, authors, isbn FROM books",
      (error: Error | null, rows: SimpleBook[]) => {
        if (error) {
          reject(error);
        }
        resolve(rows);
      }
    );
  });

  database.close();

  return books;
}

export interface SimpleBook {
  authors: string;
  isbn: string;
  title: string;
}