from django.contrib.auth import authenticate, login, logout

from django.contrib.auth.decorators import login_required

from django.contrib.auth.forms import PasswordChangeForm

from django.http import HttpResponse, HttpResponseRedirect

from django.shortcuts import render_to_response

from django.template import RequestContext, loader

from django.utils import simplejson

from django.utils.translation import ugettext as _

from django.views.i18n import set_language

@login_required   

def profile(request):

    msg = ''

    user_language = request.user.get_profile().language

    if request.method == "POST":

        language_form = LanguageChangeForm(request.user, request.POST)

        password_form = PasswordChangeForm(request.user)

        #assert False, "before : %s " % request.user.username 

        if profile_form.is_valid() and language_form.is_valid():

            profile_form.save()

            language_form.save()  

            set_language(request)

            msg = _("Your profile has been updated.")

            user_language = request.user.get_profile().language

        #assert False, "after: %s " % request.user.username        

    else:

        language_form = LanguageChangeForm()

        profile_form = ProfileForm(instance=request.user)

        password_form = PasswordChangeForm(request.user)

@login_required   

def password(request):

    msg = ''

    user_language = request.user.get_profile().language

    if request.method == "POST":        

        password_form = PasswordChangeForm(request.user, request.POST)

        profile_form = ProfileForm(instance=request.user)

        language_form = LanguageChangeForm()

        if password_form.is_valid():

            password_form.save()

            msg = _("Your password has been updated.")

    else:

        language_form = LanguageChangeForm()

        profile_form = ProfileForm()

        password_form = PasswordChangeForm(request.user)

def logout_view(request):

    logout(request)

    return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))

    #return HttpResponseRedirect(settings.LOGOUT_URL)

def login_ajax(request, loginstate_template_name='ldt/user/login_form.html'):

    if request.method == "POST":

        username = request.POST["username"]

        password = request.POST["password"]

        user = authenticate(username=username, password=password)

        error_message = _(u"Sorry, that's not a valid username or password.")

        if user is not None:

            if user.is_active:

                login(request, user)

                context = RequestContext(request, { 'username': user.username, })

                template = loader.get_template(loginstate_template_name)

                html = template.render(context)

                return HttpResponse(simplejson.dumps({'message': u'successful', 'username': user.username, 'html': html, 'reload': request.POST["reload"], }))               

            else:

                return HttpResponse(simplejson.dumps({'message': error_message, }))

        else:

            return HttpResponse(simplejson.dumps({'message': error_message, }))

    return render_to_response('ldt/user/login_ajax.html', context_instance=RequestContext(request))