app.rb

class App < Sinatra::Base
  extend Settings

  configure(:development) do |c|
    register Sinatra::Reloader
    c.also_reload('lib/**/*.rb')
  end

  configure do
    set :root, APP_ROOT
    set :haml, {format: :html5}

    enable(:sessions)
    set :session_secret, config.session_secret
    use Rack::Flash, sweep: true
  end

  helpers(ApplicationHelper)

  get '/' do
    haml :index
  end

  post '/user/login' do
    if user = User.authenticate(params[:email], params[:password])
      flash[:notice] = "Logged in successfully"
      session[:user_id] = user.id.to_s
      redirect '/'
    else
      flash[:notice] = "Incorrect credentials"
      redirect '/'
    end
  end

  get '/user/new' do
    haml :register
  end

  post '/user/new' do
    @user = User.create(params)
    if @user.valid?
      flash[:notice] = "Registered successfully!"
      session[:user_id] = @user.id.to_s
      redirect '/'
    else
      haml :register
    end
  end

  get '/user/logout' do
    session[:user_id] = nil
    redirect '/'
  end
end