"""
Views for the accounts application.

"""
import logging

from django.shortcuts import render, redirect
from django.conf import settings

from accounts.models import PendingUser
from accounts.forms import RegisterForm, ForgotUsernameForm
from accounts import create_new_user
from antispam.decorators import log_auth_failures


logger = logging.getLogger('auth')

#######################################################################

@log_auth_failures('Register')
def register(request):
    if request.user.is_authenticated():
        return redirect(settings.LOGIN_REDIRECT_URL)

    if request.method == 'POST':
        form = RegisterForm(request.POST, ip=request.META.get('REMOTE_ADDR', '?'))
        if form.is_valid():
            form.save()
            return redirect('accounts.views.register_thanks')
    else:
        form = RegisterForm()

    return render(request, 'accounts/register.html', {'form': form})

#######################################################################

def register_thanks(request):
    if request.user.is_authenticated():
        return redirect(settings.LOGIN_REDIRECT_URL)

    return render(request, 'accounts/register_thanks.html')

#######################################################################

def register_confirm(request, username, key):
    if request.user.is_authenticated():
        return redirect(settings.LOGIN_REDIRECT_URL)

    # purge expired users

    PendingUser.objects.purge_expired()

    ip = request.META.get('REMOTE_ADDR', '?')
    try:
        pending_user = PendingUser.objects.get(username = username)
    except PendingUser.DoesNotExist:
        logger.error('Accounts register_confirm [%s]: user does not exist: %s', ip, username)
        return render(request,
                  'accounts/register_failure.html',
                  {'username': username})

    if pending_user.key != key:
        logger.error('Accounts register_confirm [%s]: key error: %s', ip, username)
        return render(request,
                'accounts/register_failure.html',
                {'username': username})

    create_new_user(pending_user, ip)

    return render(request,
            'accounts/register_success.html',
            {'username': username})

#######################################################################

def username_query(request):
    """This view handles forgotten username queries."""
    if request.user.is_authenticated():
        return redirect(settings.LOGIN_REDIRECT_URL)

    if request.method == 'POST':
        form = ForgotUsernameForm(data=request.POST)
        if form.is_valid():
            form.save()
            return redirect('accounts-username_sent')
    else:
        form = ForgotUsernameForm()

    return render(request, 'accounts/username_query.html', {'form': form})