Class: Kwipper::Response

Inherits:
Object
  • Object
show all
Defined in:
lib/kwipper/response.rb

Constant Summary collapse

STATUSES = 
{
  ok:           [200, 'OK'],
  created:      [201, 'Created'],
  found:        [302, 'Found'],
  bad_request:  [400, 'Bad Request'],
  unauthorized: [401, 'Unauthorized'],
  not_found:    [404, 'Not Found'],
  server_error: [500, 'Server Error']
}
'kwipper_session'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(request) ⇒ Response

Returns a new instance of Response.



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# File 'lib/kwipper/response.rb', line 17

def initialize(request)
  @request = request
  @headers = {}.tap do |h|
    h['Set-Cookie'] = session_cookie unless has_session?
  end
  @body = ''
end

Instance Attribute Details

#body ⇒ Object

Returns the value of attribute body.



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# File 'lib/kwipper/response.rb', line 14

def body
  @body
end

#content_type ⇒ Object

Returns the value of attribute content_type.



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# File 'lib/kwipper/response.rb', line 14

def content_type
  @content_type
end

#headers ⇒ Object (readonly)

Returns the value of attribute headers.



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# File 'lib/kwipper/response.rb', line 15

def headers
  @headers
end

#redirect ⇒ Object

Returns the value of attribute redirect.



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# File 'lib/kwipper/response.rb', line 14

def redirect
  @redirect
end

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/kwipper/response.rb', line 15

def request
  @request
end

#status_code ⇒ Object

Returns the value of attribute status_code.



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# File 'lib/kwipper/response.rb', line 14

def status_code
  @status_code
end

#status_message ⇒ Object

Returns the value of attribute status_message.



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# File 'lib/kwipper/response.rb', line 14

def status_message
  @status_message
end

Instance Method Details

#current_session ⇒ Object 



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# File 'lib/kwipper/response.rb', line 79

def current_session
  if has_session?
    @current_session ||= Session.find request.cookies[SESSION_COOKIE_NAME]
  end
end

#current_user ⇒ Object 



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# File 'lib/kwipper/response.rb', line 73

def current_user
  if current_session
    @current_user ||= User.find current_session.user_id
  end
end

#has_session? ⇒ Boolean

Session helpers

Returns:

  • (Boolean) 


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# File 'lib/kwipper/response.rb', line 53

def has_session?
  request.cookies.key? SESSION_COOKIE_NAME
end

#headers_for_response ⇒ Object 



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# File 'lib/kwipper/response.rb', line 38

def headers_for_response
  headers.merge({
    'Content-Length' => body.size,
    'Content-Type' => content_type
  }).tap do |h|
    h['Location'] = redirect if redirect
  end.map { |k, v| "#{k}: #{v}" }.join "\r\n"
end

#info ⇒ Object 



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# File 'lib/kwipper/response.rb', line 34

def info
  "#{@status_code} #{@status_message}"
end

#remove_session_cookie ⇒ Object

For the server to remove a browser cookie we need to set a cookie of the same name with an expires value to now (or in the past) so that the browser will expire it and remove it. The value is also voided.



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# File 'lib/kwipper/response.rb', line 64

def remove_session_cookie
  cookie = session_cookie "deleted; expires=#{Time.now.httpdate}"
  headers['Set-Cookie'] = cookie
end

#session_cookie(value = "#{session_cookie_value}; HttpOnly") ⇒ Object 



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# File 'lib/kwipper/response.rb', line 57

def session_cookie(value = "#{session_cookie_value}; HttpOnly")
  "#{SESSION_COOKIE_NAME}=#{value}"
end

#session_cookie_value ⇒ Object 



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# File 'lib/kwipper/response.rb', line 69

def session_cookie_value
  @session_cookie_value ||= request.cookies.fetch SESSION_COOKIE_NAME, SecureRandom.urlsafe_base64
end

#set_status(status) ⇒ Object 



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# File 'lib/kwipper/response.rb', line 47

def set_status(status)
  @status_code, @status_message = STATUSES[status]
end

#to_http_response ⇒ Object 



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# File 'lib/kwipper/response.rb', line 25

def to_http_response
<<-HTTP
HTTP/1.1 #{status_code} #{status_message}
#{headers_for_response}

#{body}
HTTP
end