CREATE TABLE IF NOT EXISTS orders (
    id SERIAL PRIMARY KEY,
  user_id INT NOT NULL,
  restaurant_id INT NOT NULL,
  total_price DECIMAL(10, 2) NOT NULL,
  status VARCHAR(50) NOT NULL DEFAULT 'pending', 
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS order_items (
  id SERIAL PRIMARY KEY,
  order_id INT NOT NULL,
  menu_item_id INT NOT NULL,
  quantity INT NOT NULL,
  price DECIMAL(10, 2) NOT NULL, 
  FOREIGN KEY (order_id) REFERENCES orders(id)
);