# Copyright 2011 GRNET S.A. All rights reserved.
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from django import http
from django.conf import settings
from django.utils.translation import activate, to_locale
from django.utils.translation import check_for_language, get_language

def set_language(request):
    """
    Django's set_language function adapted to serve GET instead of POST
    """
    next = request.REQUEST.get('next', None)
    if not next:
        next = request.META.get('HTTP_REFERER', None)
    if not next:
        next = '/'
    response = http.HttpResponseRedirect(next)
    if request.method == 'GET':
        lang_code = request.GET.get('l', None)
        if lang_code and check_for_language(lang_code):
            if hasattr(request, 'session'):
                request.session['django_language'] = lang_code
            else:
                response.set_cookie(settings.LANGUAGE_COOKIE_NAME, lang_code)
    return response