from django.conf import settings
from django.http import HttpResponseRedirect
from django.core.urlresolvers import resolve
from django.views.debug import technical_500_response
from django.views.defaults import server_error

from django.contrib.sites.models import Site

from sys import exc_info

class RedirectMiddleware(object):
    def process_request(self, request):
        if request.is_ajax():
            return None
        try:
            site = Site.objects.get_current()
        except:
            return None
        host = request.get_host()
        if host != site.domain:
            if host.endswith('.' + site.domain):
                subdomain = host[:host.index('.')]
                if subdomain not in settings.DENIED_SUBDOMAINS:
                    try:
                        callback, callback_args, callback_kwargs = resolve(request.path, settings.SUBDOMAINS_ROOT_URLCONF)
                    except Exception, e:
                        if settings.DEBUG:
                            return technical_500_response(request, *exc_info())
                        else:
                            return server_error(request)

                        print 'except', repr(e)
                    else:
                        callback_kwargs.update({'user': subdomain})
			try:
                            return callback(request, *callback_args, **callback_kwargs)
			except	Exception, e:
                            if settings.DEBUG:
                                return technical_500_response(request, *exc_info())
                            else:
                                return server_error(request)

            return HttpResponseRedirect('http://%s%s' % (site.domain, request.path))