import datetime

import re

import time

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

from django.contrib.auth.models import User

from django.http import HttpResponse

from django.http import HttpResponseRedirect

from django.shortcuts import render_to_response

from django.template import Context

from django.template import RequestContext

from django.template import loader

from django.utils.translation import gettext_lazy as _

from conference.forms import ParticipantForm

from conference.models import Participant

def makemsg(username,url):

  """

  Email body to be sent to user.

  """

  msg = _("\

Dear %(username)s,\n\n\

\

Thank you for registering with us. Please visit this url:\n\n\

%(url)s\n\n\

to complete the registration\n\n\

regards\n\

PyCon India 2009 Team\

") %{'username': username,'url': url}

  return msg

def home(request, template_name='home.html'):

  return render_to_response(template_name, RequestContext(request, {}))

def logout_view(request):

  #print request.user.username

  if request.user.is_authenticated():

    #print request.user.username

    logout(request)		

  return HttpResponseRedirect('../')

def register(request):

  """Register function.

  """

  if request.user.is_authenticated():

    msg = _("You are already registered")

    return HttpResponseRedirect("/2009/message/%s/" % msg)

  if request.POST:

    # On POST method.

    form = ParticipantForm(request.POST)

    if form.is_valid():

      # If form is clean and has no errors.

      fm = form.cleaned_data

      if len(fm['username']) > 30 or len(fm['username']) < 4:

        # Username should be > 4 characters and less that 30 characters.

        form.errors['username']=[_("User Name must be 4-30 characters long")]

      else:

        r = re.compile(r"[A-Za-z0-9_]")

        for alph in fm['username']:

          # Check if every character of the username is either an 

          # alphabet or numeral.

          if  not r.match(alph):

            form.errors['username']=[_("Invalid character %s in Username") %(alph)]

        if not form.errors:

          test = User.objects.filter(username__iexact=fm['username'])

          # Check if username already exists.

          if test:

            form.errors['username'] = [("Username registered, try something else")]          

          # Check if the email id has already been in use.

          teste = User.objects.filter(email__iexact=fm['email'])

          if teste:

            form.errors['email'] = [_("Email registered. Try something else")]

          else:

            # If username is found in the temporary registration database

            # then show pending error message.

            teste1 = User.objects.filter(email__iexact=fm['email'])

            if teste1:

              form.errors['email'] = [("Username pending registration. Try tomorrow")]

    if not form.errors:

      # If all goes well then push into database.

      new_reg = form.save()      

      #new_reg.save()      

      return HttpResponseRedirect("/regthank/%i/" % new_reg.id)

  else:

    # On the GET method.

    form = ParticipantForm()

  return render_to_response("register.html",

      { "form":form, }, context_instance=RequestContext(request))

def regthank(request,id):

    """Function displayed after registration is successful.

    """

    p = Participant.objects.get(pk=id)

    t = loader.get_template("regthank.html")

    c = RequestContext(request,

                {"p":p,

                 })

    return HttpResponse(t.render(c))