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from django.http import HttpResponse, HttpResponseRedirect, HttpResponseBadRequest
from django.conf import settings
from django.template.loader import render_to_string
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 astakos.im.target.util import prepare_response
from astakos.im.models import AstakosUser
from astakos.im.forms import LoginForm
from urllib import unquote

from hashlib import new as newhasher

def login(request, on_failure='login.html'):
    """
    on_failure: the template name to render on login failure
    """
    form = LoginForm(data=request.POST)
    if not form.is_valid():
        return render_to_response(on_failure,
                                  {'form':form},
                                  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:
        message = _('Inactive account')
    if message:
        messages.add_message(request, message.ERROR, message)
        return render_to_response(on_failure,
                                  {'form':form},
                                  context_instance=RequestContext(request))
    
    next = request.POST.get('next')
    return prepare_response(request, user, next)
    
def activate(request):
    token = request.GET.get('auth')
    next = request.GET.get('next')
    try:
        user = AstakosUser.objects.get(auth_token=token)
    except AstakosUser.DoesNotExist:
        return HttpResponseBadRequest('No such user')
    
    user.is_active = True
    user.save()
    user = authenticate(email=user.email, auth_token=user.auth_token)
    return prepare_response(request, user, next, renew=True)