ISHOCON1をScalaで書いたお気持ち

app.rb

def authenticate(email, password)
  user = db.xquery('SELECT * FROM users WHERE email = ?', email).first
  fail Ishocon1::AuthenticationError unless user[:password] == password
  session[:user_id] = user[:id]
end

def current_user
  db.xquery('SELECT * FROM users WHERE id = ?', session[:user_id]).first
end

def update_last_login(user_id)
  db.xquery('UPDATE users SET last_login = ? WHERE id = ?', time_now_db, user_id)
end

post '/login' do
  authenticate(params['email'], params['password'])
  update_last_login(current_user[:id])
  redirect '/'
end