'"Lennard de Rijk" <ljvderijk@gmail.com>'

from google.appengine.api import users

from soc.logic import mail_dispatcher

from soc.logic.models import user as user_logic

import os

  def _onCreate(self, entity):

    """Sends out a message notifying users about the new invite/request.

    """

    if entity.group_accepted:  

      # this is an invite

      self.sendInviteMessage(entity)

    elif entity.user_accepted:

      # this is a request

      # TODO(Lennard) Create a new request message

      pass

  def sendInviteMessage(self, entity):

    """Sends out an invite notification to the user the request is for.

    Args:

      entity : A request containing the information needed to create the message

    """

    # get the current user

    properties = {'account': users.get_current_user()}

    current_user_entity = user_logic.logic.getForFields(properties, unique=True)

    # get the user the request is for

    properties = {'link_id': entity.link_id }

    request_user_entity = user_logic.logic.getForFields(properties, unique=True)

    # create the invitation_url

    invitation_url = "%(host)s%(index)s" % {

                          'host' : os.environ['HTTP_HOST'], 

                          'index': self.inviteAcceptedRedirect(entity, None)

                          }

    # get the group entity

    group_entity = entity.scope

    messageProperties = {

                      'to_name': request_user_entity.name,

                      'sender_name': current_user_entity.name,

                      'role': entity.role,

                      'group': group_entity.name,

                      'invitation_url': invitation_url,

                      'to': request_user_entity.account.email(),

                      'sender': current_user_entity.account.email(),

                      'subject': "Invitation to become a %(role)s for %(group)s"

                         %{'role': entity.role, 'group': group_entity.name},

                      }

    # send out the message using the default invitation template    

    mail_dispatcher.sendMailFromTemplate('soc/mail/invitation.html', 

                                         messageProperties)

  def inviteAcceptedRedirect(self, entity, _):

    """Returns the redirect for accepting an invite

    """

    return '/%s/create/%s/%s' % (

        entity.role, entity.scope_path, entity.link_id)