const Database = require('better-sqlite3');
const path = require('path');

const dbPath = path.join(__dirname, 'database.sqlite');
const db = new Database(dbPath);

// Initialize tables
db.exec(`
  CREATE TABLE IF NOT EXISTS documents (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    title TEXT NOT NULL,
    original_path TEXT NOT NULL,
    processed_path TEXT NOT NULL,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
  );

  CREATE TABLE IF NOT EXISTS users (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    username TEXT UNIQUE NOT NULL,
    password TEXT NOT NULL
  );
`);

// Create default admin user if not exists
// The password here is a hash for "123456"
const checkUser = db.prepare('SELECT * FROM users WHERE username = ?').get('admin');
if (!checkUser) {
  const bcrypt = require('bcryptjs');
  const salt = bcrypt.genSaltSync(10);
  const hash = bcrypt.hashSync('123456', salt);
  db.prepare('INSERT INTO users (username, password) VALUES (?, ?)').run('admin', hash);
}

module.exports = db;