from django.contrib.auth import authenticate

from django.contrib.auth import login

from django.contrib.auth.decorators import login_required

from django.contrib.auth.forms import AuthenticationForm

from django.contrib.auth.models import User

from django.core.exceptions import ObjectDoesNotExist

from django.core.urlresolvers import reverse

from django.shortcuts import render_to_response

from django.template import RequestContext

from project.scipycon.base.models import Event

from project.scipycon.registration.forms import RegistrationEditForm

from project.scipycon.registration.forms import RegistrationSubmitForm

from project.scipycon.registration.forms import AccommodationForm

from project.scipycon.registration.forms import PaymentForm

from project.scipycon.registration.forms import WifiForm

from project.scipycon.registration.models import Accommodation

from project.scipycon.registration.models import Payment

from project.scipycon.registration.models import Registration

from project.scipycon.registration.models import Wifi

from project.scipycon.registration.utils import send_confirmation

from project.scipycon.user.forms import RegistrantForm

from project.scipycon.user.models import UserProfile

from project.scipycon.user.utils import scipycon_createregistrant

from project.scipycon.utils import set_message_cookie

REG_TOTAL = 1000

@login_required

def registrations(request, scope, 

                  template_name='registration/registrations.html'):

    """Simple page to count registrations"""

    registrations = Registration.objects.all().count()

    user = request.user

    if user.is_authenticated():

        registration = Registration.objects.get(registrant=user)

    else:

        registration = None

    event = Event.objects.get(scope=scope)

    return render_to_response(template_name, RequestContext(request, {

        'params': {'scope': scope},

        'over_reg' : registrations >= REG_TOTAL and True or False,

        'registrations' : registrations,

        'registration': registration,

        'event': event}))

@login_required

def edit_registration(request, scope, id,

                      template_name='registration/edit-registration.html'):

    """Allows users that submitted a registration to edit it.

    """

    scope_entity = Event.objects.get(scope=scope)

    reg = Registration.objects.get(pk=int(id))

    wifi = Wifi.objects.get(user=reg.registrant)

    # TODO: This is an ugly hack to add accommodation and payment forms

    # details at later stage for SciPy.in 2010. This must be removed for

    # SciPy.in 2011

    acco, acco_created = Accommodation.objects.get_or_create(

        user=reg.registrant, scope=scope_entity)

    payment, payment_created = Payment.objects.get_or_create(

        user=reg.registrant, scope=scope_entity)

    if reg.registrant != request.user:

        redirect_to = reverse('scipycon_account', kwargs={'scope': scope})

        return set_message_cookie(

            redirect_to,

            msg = u'Redirected because the registration you selected' \

                      + ' is not your own.')

    if request.method == 'POST':

        registration_form = RegistrationEditForm(data=request.POST)

        wifi_form = WifiForm(data=request.POST)

        acco_form = AccommodationForm(data=request.POST)

        payment_form = PaymentForm(data=request.POST)

        if (registration_form.is_valid() and wifi_form.is_valid() and

            acco_form.is_valid() and payment_form.is_valid()):

            reg.organisation = registration_form.data.get('organisation')

            reg.occupation = registration_form.data.get('occupation')

            reg.city = registration_form.data.get('city')

            reg.phone_num = registration_form.data.get('phone_num')

            reg.postcode = registration_form.data.get('postcode')

            #reg.tshirt = registration_form.data.get('tshirt')

            reg.allow_contact = registration_form.data.get(

                'allow_contact') and True or False

            reg.conference = registration_form.data.get(

                'conference') and True or False

            reg.tutorial = registration_form.data.get(

                'tutorial') and True or False

            reg.sprint = registration_form.data.get(

                'sprint') and True or False

            reg.save()

            wifi = wifi_form.save(reg.registrant, reg.scope)

            acco = acco_form.save(reg.registrant, reg.scope)

            payment = payment_form.save(reg.registrant, reg.scope)

            # Saved.. redirect

            redirect_to = reverse('scipycon_account', kwargs={'scope': scope})

            return set_message_cookie(redirect_to,

                msg = u'Your changes have been saved.')

    else:

        registration_form = RegistrationEditForm(initial={

            'id' : id,

            'organisation' : reg.organisation,

            'occupation' : reg.occupation,

            'city' : reg.city,

            'phone_num': reg.phone_num,

            #'tshirt' : reg.tshirt,

            'conference': reg.conference,

            'tutorial': reg.tutorial,

            'postcode' : reg.postcode,

            'sprint' : reg.sprint,

            'allow_contact' : reg.allow_contact,

            })

        wifi_form = WifiForm(initial={

            'user': wifi.user,

            'scope': wifi.scope,

            'wifi': wifi.wifi,

            'registration_id': wifi.registration_id

            })

        acco_form = AccommodationForm(initial={

            'user': acco.user,

            'scope': acco.scope,

            'sex': acco.sex,

            'accommodation_required': acco.accommodation_required,

            'accommodation_days': acco.accommodation_days,

            })

        payment_form = PaymentForm(initial={

            'user': payment.user,

            'scope': payment.scope,

            'paid': payment.type or payment.details,

            'type': payment.type,

            'details': payment.details,

            })

    return render_to_response(

        template_name, RequestContext(request, {

        'params': {'scope': scope},

        'registration': {'id': id},

        'registration_form': registration_form,

        'wifi_form': wifi_form,

        'acco_form': acco_form,

        'payment_form': payment_form}))

def submit_registration(request, scope,

        template_name='registration/submit-registration.html'):

    """Allows user to edit registration

    """

    user = request.user

    reg_count = Registration.objects.all().count()

    scope_entity = Event.objects.get(scope=scope)

    if user.is_authenticated():

        try:

            profile = user.get_profile()

        except:

            profile, new = UserProfile.objects.get_or_create(

                user=user, scope=scope_entity)

            if new:

                profile.save()

        try:

            registration = Registration.objects.get(registrant=user)

            if registration:

                redirect_to = reverse('scipycon_account',

                                      kwargs={'scope': scope})

                return set_message_cookie(

                    redirect_to, msg = u'You have already been registered.')

        except ObjectDoesNotExist:

            pass

    message = None

    if request.method == 'POST':

        registration_form = RegistrationSubmitForm(data=request.POST)

        registrant_form = RegistrantForm(data=request.POST)

        wifi_form = WifiForm(data=request.POST)

        acco_form = AccommodationForm(data=request.POST)

        payment_form = PaymentForm(data=request.POST)

        if request.POST.get('action', None) == 'login':

            login_form = AuthenticationForm(data=request.POST)

            if login_form.is_valid():

                login(request, login_form.get_user())

                redirect_to = reverse('scipycon_submit_registration',

                                      kwargs={'scope': scope})

                return set_message_cookie(redirect_to,

                        msg = u'You have been logged in please continue' + \

                               'with registration.')

        newuser = None

        passwd = None

        if not user.is_authenticated():

            if registrant_form.is_valid():

                newuser = scipycon_createregistrant(

                    request, registrant_form.data, scope)

                # Log in user

                passwd = User.objects.make_random_password()

                newuser.set_password(passwd)

                newuser.save()

                user = authenticate(username=newuser.username, password=passwd)

                login(request, user)

                newuser = user

        else:

            newuser = user

        if (registration_form.is_valid() and newuser and wifi_form.is_valid()

            and acco_form.is_valid() and payment_form.is_valid()):

            allow_contact = registration_form.cleaned_data.get(

                'allow_contact') and True or False

            conference = registration_form.cleaned_data.get(

                'conference') and True or False

            tutorial = registration_form.cleaned_data.get('tutorial') and \

                True or False

            sprint = registration_form.cleaned_data.get('sprint') and \

                True or False

            registrant = User.objects.get(pk=newuser.id)

            reg = Registration(

                scope=scope_entity,

                registrant = registrant,

                organisation = registration_form.cleaned_data.get(

                    'organisation'),

                occupation = registration_form.cleaned_data.get('occupation'),

                city = registration_form.cleaned_data.get('city'),

                #tshirt = registration_form.data.get('tshirt'),

                postcode = registration_form.cleaned_data.get('postcode'),

                phone_num = registration_form.cleaned_data.get('phone_num'),

                allow_contact = allow_contact,

                conference = conference,

                tutorial = tutorial,

                sprint = sprint)

            reg.save() 

            # get id and use as slug and invoice number

            id = reg.id

            slug = 'SCIPYIN2010%04d' % id

            reg.slug = slug

            reg.save()

            wifi = wifi_form.save(registrant, scope_entity)

            acco = acco_form.save(registrant, scope_entity)

            payment = payment_form.save(registrant, scope_entity)

            send_confirmation(registrant, scope_entity, password=passwd)

            redirect_to = reverse('scipycon_registrations',

                                  kwargs={'scope': scope})

            return set_message_cookie(redirect_to,

                    msg = u'Thank you, your registration has been submitted '\

                           'and an email has been sent with payment details.')

    else:

        registration_form = RegistrationSubmitForm()

        registrant_form = RegistrantForm()

        wifi_form = WifiForm()

        acco_form = AccommodationForm()

        payment_form = PaymentForm()

    login_form = AuthenticationForm()

    return render_to_response(template_name, RequestContext(request, {

        'params': {'scope': scope},

        'registration_form': registration_form,

        'registrant_form' : registrant_form,

        'over_reg' : reg_count >= REG_TOTAL and True or False,

        'acco_form': acco_form,

        'payment_form': payment_form,

        'wifi_form' : wifi_form,

        'message' : message,

        'login_form' : login_form

    }))

@login_required

def regstats(request, scope,

             template_name='registration/regstats.html'):

    """View that gives the statistics of registrants.

    """

    if not request.user.is_staff:

        redirect_to = reverse('scipycon_login', kwargs={'scope': scope})

        return set_message_cookie(

            redirect_to, msg = u'You must be a staff on this website to '

            'access this page.')

    q = Registration.objects.all()

    conf_num = q.filter(conference=True).count()

    tut_num = q.filter(tutorial=True).count()

    sprint_num = q.filter(sprint=True).count()

    return render_to_response(template_name, RequestContext(request,

        {'params': {'scope': scope},

         'conf_num': conf_num, 

         'tut_num': tut_num,

         'sprint_num': sprint_num,

         }))

@login_required

def manage_payments(request, scope,

                    template_name='registration/manage_payments.html'):

    """View that gives a form to manage payments.

    """

    if not request.user.is_superuser:

        redirect_to = reverse('scipycon_login', kwargs={'scope': scope})

        return set_message_cookie(

            redirect_to, msg = u'You must be an admin on this website to '

            'access this page.')

    message = None

    scope_entity = Event.objects.get(scope=scope)

    if request.method == 'POST':

        post_data = request.POST

        list_user_ids = []

        for user_id_string in post_data:

            id_str_list = user_id_string.split('_')

            if (len(id_str_list) == 3 and id_str_list[0] == 'registrant' and

              id_str_list[1] == 'id'):

                id = int(id_str_list[2])

                reg_user = User.objects.get(pk=id)

                payment, created = reg_user.payment_set.get_or_create(

                  user=reg_user, scope=scope_entity)

                payment.confirmed = True

                payment.save()

                list_user_ids.append(id)

        # This is done to unset for the confirmation for users for whom

        # mistakenly confirmation was set.

        # (TODO) This is a very expensive operation, any better solution

        # will be appreciated.

        unpaid_users = User.objects.exclude(pk__in=list_user_ids)

        for user in unpaid_users:

            payment, created = user.payment_set.get_or_create(

              user=user, scope=scope_entity)

            payment.confirmed = False

            payment.save()

    registrants = Registration.objects.all()

    return render_to_response(template_name, RequestContext(request,

        {'params': {'scope': scope},

         'registrants': registrants,

         }))