Synnefo

# Copyright 2011-2012 GRNET S.A. All rights reserved.

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import logging

from functools import wraps

from time import time, mktime

from django.http import HttpResponse

from django.views.decorators.csrf import csrf_exempt

from django.utils import simplejson as json

from . import render_fault, __get_uuid_displayname_catalogs, __send_feedback

from .faults import (

    Fault, Unauthorized, InternalServerError, BadRequest, ItemNotFound)

from astakos.im.models import Service

logger = logging.getLogger(__name__)

def api_method(http_method=None, token_required=False):

    """Decorator function for views that implement an API method."""

    def decorator(func):

        @wraps(func)

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

            try:

                if http_method and request.method != http_method:

                    raise BadRequest('Method not allowed.')

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

                if token_required:

                    if not x_auth_token:

                        raise Unauthorized('Access denied')

                    try:

                        service = Service.objects.get(auth_token=x_auth_token)

                        # Check if the token has expired.

                        if service.auth_token_expires:

                            if (time() - mktime(service.auth_token_expires.timetuple())) > 0:

                                raise Unauthorized('Authentication expired')

                        request.service_instance = service

                    except Service.DoesNotExist, e:

                        raise Unauthorized('Invalid 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 wrapper

    return decorator

@csrf_exempt

@api_method(http_method='POST', token_required=True)

def get_uuid_displayname_catalogs(request):

    # Normal Response Codes: 200

    # Error Response Codes: internalServerError (500)

    #                       badRequest (400)

    #                       unauthorised (401)

    return __get_uuid_displayname_catalogs(request, user_call=False)

@csrf_exempt

@api_method(http_method='POST', token_required=True)

def send_feedback(request, email_template_name='im/feedback_mail.txt'):

    # Normal Response Codes: 200

    # Error Response Codes: internalServerError (500)

    #                       badRequest (400)

    #                       unauthorised (401)

    return __send_feedback(request, email_template_name)