Synnefo

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from django.http import HttpResponseBadRequest

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.contrib.auth import authenticate

from django.contrib import messages

from django.utils.translation import ugettext as _

from django.views.decorators.csrf import csrf_exempt

from django.views.decorators.http import require_http_methods

from django.core.urlresolvers import reverse

from astakos.im.util import prepare_response, get_query

from astakos.im.views import requires_anonymous

from astakos.im.models import AstakosUser, PendingThirdPartyUser

from astakos.im.forms import LoginForm

from astakos.im.settings import RATELIMIT_RETRIES_ALLOWED

from astakos.im.settings import ENABLE_LOCAL_ACCOUNT_MIGRATION

from ratelimit.decorators import ratelimit

retries = RATELIMIT_RETRIES_ALLOWED-1

rate = str(retries)+'/m'

@require_http_methods(["GET", "POST"])

@csrf_exempt

@requires_anonymous

@ratelimit(field='username', method='POST', rate=rate)

def login(request, on_failure='im/login.html'):

    """

    on_failure: the template name to render on login failure

    """

    was_limited = getattr(request, 'limited', False)

    form = LoginForm(data=request.POST, was_limited=was_limited, request=request)

    next = get_query(request).get('next', '')

    username = get_query(request).get('key')

    if not form.is_valid():

        return render_to_response(

            on_failure,

            {'login_form':form,

             'next':next,

             'key':username},

            context_instance=RequestContext(request)

        )

    # get the user from the cash

    user = form.user_cache

    message = None

    if not user:

        message = _('Cannot authenticate account')

    elif not user.is_active:

        if user.sent_activation:

            message = _('Your request is pending activation')

        else:

            message = _('You have not followed the activation link')

    if message:

        messages.add_message(request, messages.ERROR, message)

        return render_to_response(on_failure,

                                  {'form':form},

                                  context_instance=RequestContext(request))

    # hook for switching account to use third party authentication

    if ENABLE_LOCAL_ACCOUNT_MIGRATION and username:

        try:

            new = PendingThirdPartyUser.objects.get(

                username=username)

        except:

            messages.error(

                request,

                _('Account failed to switch to %(provider)s' % locals())

            )

            return render_to_response(

                on_failure,

                {'login_form':form,

                 'next':next},

                context_instance=RequestContext(request)

            )

        else:

            user.provider = new.provider

            user.third_party_identifier = new.third_party_identifier

            user.save()

            new.delete()

            messages.success(

                request,

                _('Account successfully switched to %(provider)s' % user.__dict__)

            )

    return prepare_response(request, user, next)