```ruby
class WishyWishyApp < Sinatra::Base
  before %r{/api(.*)} do
    content_type :json
    pass if params[:captures].first == ''
    halt json_status 400, 'Please use SSL' if
      settings.force_ssl && !request.secure?
  end

  before %r{^/api/(\w+)} do
    pass if params[:captures].first =~ /^auth/

    token = request.env['HTTP_AUTHORIZATION']
    token = JWT.decode(token, settings.token_secret) rescue nil
    token = token[0] unless token.nil?

    halt json_status 401, 'Invalid token' if token.nil?
    halt json_status 401, 'Token has expired' if
      Time.now > Time.at(token['expires'])

    @id = token['fbid']
    @current_user = User.where(fbid: @id).first
  end

  before %r{/api/groups/([0-9a-f]+)/?(.*)} do
    @group = @current_user.groups.find(params[:captures][0]) rescue nil
    halt json_status 404, 'Unknown group' if @group.nil?
  end

  after %r{/api.*} do
    halt json_status 404, 'Route not found' if response.status == 404
  end

  get %r{/api/?$} do
    json :version => API_VERSION
  end
end
```

Fix bug with 404 errors
user
```ruby
class WishyWishyApp < Sinatra::Base
  before %r{/api(.*)} do
    content_type :json
    pass if params[:captures].first == ''
    halt json_status 400, 'Please use SSL' if
      settings.force_ssl && !request.secure?
  end

  before %r{^/api/(\w+)} do
    pass if params[:captures].first =~ /^auth/

    token = request.env['HTTP_AUTHORIZATION']
    token = JWT.decode(token, settings.token_secret) rescue nil
    token = token[0] unless token.nil?

    halt json_status 401, 'Invalid token' if token.nil?
    halt json_status 401, 'Token has expired' if
      Time.now > Time.at(token['expires'])

    @id = token['fbid']
    @current_user = User.where(fbid: @id).first
  end

  before %r{/api/groups/([0-9a-f]+)/?(.*)} do
    @group = @current_user.groups.find(params[:captures][0]) rescue nil
    halt json_status 404, 'Unknown group' if @group.nil?
  end

  not_found do
    if %r{^/api}
      error = JSON.parse(response.body[0]) rescue nil
      halt json_status 404, 'Route not found' unless error['message']
    end
  end

  get %r{/api/?$} do
    json :version => API_VERSION
  end
end
```
assistant