Synnefo » astakos

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import logging

import urllib

from traceback import format_exc

from django.http import HttpResponse

from django.utils import simplejson as json

from django.conf import settings

from django.core.urlresolvers import reverse

from astakos.im.models import AstakosUser, Service

from astakos.im.api.faults import Fault, ItemNotFound, InternalServerError, Unauthorized, BadRequest

from astakos.im.settings import INVITATIONS_ENABLED, COOKIE_NAME, EMAILCHANGE_ENABLED

logger = logging.getLogger(__name__)

format = ('%a, %d %b %Y %H:%M:%S GMT')

class apiMethod(object):

    def __init__(self, http_method=None, token_required=False, perms=None):

        self.http_method = http_method

        self.token_required = token_required

        self.perms = perms if perms else ()

    def __call__(self, func):

        def wrapped_f(request, *args, **kwargs):

            try:

                if self.http_method and request.method != self.http_method:

                    raise BadRequest('Method not allowed.')

                x_auth_token = request.META.get('HTTP_X_AUTH_TOKEN')

                if self.token_required:

                    if not x_auth_token:

                        raise Unauthorized('Access denied')

                    kwargs['user'] = self._get_token_owner(x_auth_token)

                response = func(request, *args, **kwargs)

                return response

            except Fault, fault:

                return render_fault(request, fault)

            except BaseException, e:

                logger.exception('Unexpected error: %s' % e)

                fault = InternalServerError('Unexpected error')

                return render_fault(request, fault)

        return wrapped_f

    def _get_token_owner(self, x_auth_token):

        return

def render_fault(request, fault):

    if isinstance(fault, InternalServerError) and settings.DEBUG:

        fault.details = format_exc(fault)

    request.serialization = 'text'

    data = fault.message + '\n'

    if fault.details:

        data += '\n' + fault.details

    response = HttpResponse(data, status=fault.code)

    response['Content-Length'] = len(response.content)

    return response

def _get_user_by_username(user_id):

    try:

        user = AstakosUser.objects.get(username = user_id)

    except AstakosUser.DoesNotExist, e:

        raise ItemNotFound('Invalid userid')

    else:

        response = HttpResponse()

        response.status=200

        user_info = {'id':user.id,

                     'username':user.username,

                     'email':[user.email],

                     'name':user.realname,

                     'auth_token_created':user.auth_token_created.strftime(format),

                     'auth_token_expires':user.auth_token_expires.strftime(format),

                     'has_credits':user.has_credits,

                     'enabled':user.is_active,

                     'groups':[g.name for g in user.groups.all()]}

        response.content = json.dumps(user_info)

        response['Content-Type'] = 'application/json; charset=UTF-8'

        response['Content-Length'] = len(response.content)

        return response

def _get_user_by_email(email):

    if not email:

        raise BadRequest('Email missing')

    try:

        user = AstakosUser.objects.get(email = email)

    except AstakosUser.DoesNotExist, e:

        raise ItemNotFound('Invalid email')

    if not user.is_active:

        raise ItemNotFound('Inactive user')

    else:

        response = HttpResponse()

        response.status=200

        user_info = {'id':user.id,

                     'username':user.username,

                     'email':[user.email],

                     'enabled':user.is_active,

                     'name':user.realname,

                     'auth_token_created':user.auth_token_created.strftime(format),

                     'auth_token_expires':user.auth_token_expires.strftime(format),

                     'has_credits':user.has_credits,

                     'groups':[g.name for g in user.groups.all()],

                     'user_permissions':[p.codename for p in user.user_permissions.all()]}

        response.content = json.dumps(user_info)

        response['Content-Type'] = 'application/json; charset=UTF-8'

        response['Content-Length'] = len(response.content)

        return response

@apiMethod(http_method='GET')

def get_services(request):

    callback = request.GET.get('callback', None)

    services = Service.objects.all()

    data = tuple({'name':s.name, 'url':s.url, 'icon':s.icon} for s in services)

    data = json.dumps(data)

    mimetype = 'application/json'

    if callback:

        mimetype = 'application/javascript'

        data = '%s(%s)' % (callback, data)

    return HttpResponse(content=data, mimetype=mimetype)

@apiMethod()

def get_menu(request, with_extra_links=False, with_signout=True):

    index_url = reverse('index')

    absolute = lambda (url): request.build_absolute_uri(url)

    l = [{ 'url': absolute(index_url), 'name': "Sign in"}]

    cookie = urllib.unquote(request.COOKIES.get(COOKIE_NAME, ''))

    email = cookie.partition('|')[0]

    try:

        user = AstakosUser.objects.get(email=email, is_active=True)

    except AstakosUser.DoesNotExist:

        pass

    else:

        l = []

        l.append({ 'url': absolute(reverse('astakos.im.views.index')),

                  'name': user.email})

        l.append({ 'url': absolute(reverse('astakos.im.views.edit_profile')),

                  'name': "My account" })

        if with_extra_links:

            if user.has_usable_password():

                l.append({ 'url': absolute(reverse('password_change')),

                          'name': "Change password" })

            if EMAILCHANGE_ENABLED:

                l.append({'url':absolute(reverse('email_change')),

                          'name': "Change email"})

            if INVITATIONS_ENABLED:

                l.append({ 'url': absolute(reverse('astakos.im.views.invite')),

                          'name': "Invitations" })

            l.append({ 'url': absolute(reverse('astakos.im.views.feedback')),

                      'name': "Feedback" })

        if with_signout:

            l.append({ 'url': absolute(reverse('astakos.im.views.logout')),

                      'name': "Sign out"})

    callback = request.GET.get('callback', None)

    data = json.dumps(tuple(l))

    mimetype = 'application/json'

    if callback:

        mimetype = 'application/javascript'

        data = '%s(%s)' % (callback, data)

    return HttpResponse(content=data, mimetype=mimetype)