from django.shortcuts import render, redirect
from calendrier.forms import ModifEventForm, EventForm, ParticipantsForm, \
        SendMail, ChangeDoodleName
from calendrier.models import Event, Participants
from django.contrib.sites.shortcuts import get_current_site
from django.utils.safestring import mark_safe
from django.views.generic import UpdateView, DeleteView
from django.core.urlresolvers import reverse_lazy
from partitions.decorators import chef_required
from django.contrib.auth.decorators import login_required
from gestion.models import ErnestoUser
from django.utils.decorators import method_decorator
from django.core.mail import send_mail

from calendrier.calend import EventCalendar
from calendar import monthrange
from datetime import date, datetime

from propositions.utils import generer


def named_month(pMonthNumber):
    return date(1900, pMonthNumber, 1).strftime('%B')


def home(request):
    lToday = datetime.now()
    return calendar(request, lToday.year, lToday.month)


def calendar(request, pYear, pMonth):
    lYear = int(pYear)
    lMonth = int(pMonth)
    lCalendarFromMonth = datetime(lYear, lMonth, 1)
    lCalendarToMonth = datetime(lYear, lMonth, monthrange(lYear, lMonth)[1])
    lEvents = Event.objects.filter(date__gte=lCalendarFromMonth,
                                   date__lte=lCalendarToMonth,
                                   calendrier=True)
    if request.user.is_authenticated():
        lEvents = Event.objects.filter(date__gte=lCalendarFromMonth,
                                       date__lte=lCalendarToMonth)
    lCalendar = EventCalendar(lEvents).formatmonth(lYear, lMonth)
    lPreviousYear = lYear
    lPreviousMonth = lMonth - 1
    if lPreviousMonth == 0:
        lPreviousMonth = 12
        lPreviousYear - 1
    lNextYear = lYear
    lNextMonth = lMonth + 1
    if lNextMonth == 13:
        lNextMonth = 1
        lNextYear = lYear + 1
    lYearAfterThis = lYear + 1
    lYearBeforeThis = lYear - 1
    return render(request, 'calendrier/home.html', {
        'Calendar': mark_safe(lCalendar),
        'Month': lMonth,
        'MonthName': named_month(lMonth),
        'Year': lYear,
        'PreviousMonth': lPreviousMonth,
        'PreviousMonthName': named_month(lPreviousMonth),
        'PreviousYear': lPreviousYear,
        'NextMonth': lNextMonth,
        'NextMonthName': named_month(lNextMonth),
        'NextYear': lNextYear,
        'YearBeforeThis': lYearBeforeThis,
        'YearAfterThis': lYearAfterThis,
    })


def view_event(request, pYear, pMonth, id):
    ev = Event.objects.get(id=id)
    if not request.user.is_authenticated() and not ev.calendrier:
        return redirect('calendrier.views.home')
    nom = ev.nom.capitalize
    fin = False
    desc = False
    part = ev.participants_set.all()
    nboui = len(part.filter(reponse="oui"))
    nbpe = len(part.filter(reponse="pe"))
    nbnon = len(part.filter(reponse="non"))
    if ev.fin:
        fin = True
    if ev.description:
        desc = True
    return render(request, 'calendrier/view_event.html', locals())


def view_eventbis(request, id):
    ev = Event.objects.get(id=id)
    if not request.user.is_authenticated() and not ev.calendrier:
        return redirect('calendrier.views.home')
    part = ev.participants_set.all()
    nom = ev.nom.capitalize
    fin = False
    desc = False
    nboui = len(part.filter(reponse="oui"))
    nbpe = len(part.filter(reponse="pe"))
    nbnon = len(part.filter(reponse="non"))
    if ev.fin:
        fin = True
    if ev.description:
        desc = True
    return render(request, 'calendrier/view_event.html', locals())


@chef_required
def resend(request, id):
    if request.method == "POST":
        form = SendMail(request.POST)
        if form.is_valid():
            ev = Event.objects.get(id=id)
            users = ErnestoUser.objects.filter(is_ernesto=True)
            message = form.cleaned_data["message"]
            try:
                for user in users:
                    if user.mails:
                        Subject = "[Pouet-Pouet] %s, le %s" % (
                                ev.nom, ev.date.strftime('%d/%m/%Y'))
                        sender = 'fanfare@ens.fr'
                        receivers = [user.user.email]
                        if message != '':
                            text = "%s\n\n" % message
                        else:
                            text = "Bonjour, un évémenent a été créé.\n"
                        domain = get_current_site(request).domain
                        text += (
                            'Pour voir l\'événement, allez sur %s%s\n'
                            'Pour répondre oui allez sur %s%s\n'
                            'Pour répondre non, allez sur %s%s\n'
                            'Pour répondre peut-être, allez sur %s%s\n') \
                            % (domain,
                               reverse_lazy('view-event', args=[ev.id]),
                               domain,
                               reverse_lazy('calendrier.views.repouidir',
                                            args=[user.slug, ev.slug]),
                               domain,
                               reverse_lazy('calendrier.views.repnondir',
                                            args=[user.slug, ev.slug]),
                               domain,
                               reverse_lazy('calendrier.views.reppedir',
                                            args=[user.slug, ev.slug]))
                    send_mail(Subject, text, sender, receivers)
                return redirect("calendrier.views.view_eventbis", id)
            except:
                erreur = "Une erreur est survenue, le mail n'a pas pu être " \
                         + "envoyé."
    else:
        form = SendMail()
    return render(request, "calendrier/resend.html", locals())


@login_required
def changename(request):
    if request.method == 'POST':
        requbis = request.POST.copy()
        form = ChangeDoodleName(requbis, instance=request.user)
        if form.is_valid():
            form.save()
            success = True
    else:
        form = ChangeDoodleName(instance=request.user)
    return render(request, 'calendrier/changename.html', locals())


@chef_required
def create_event(request):
    if request.method == "POST":
        form = EventForm(request.POST)
        if form.is_valid():
            temp = True
            while temp:
                code = generer()
                try:
                    Event.objects.get(slug=code)
                except:
                    temp = False
            sendmail = form.cleaned_data["sendmail"]
            nom = form.cleaned_data["nom"]
            date = form.cleaned_data["date"]
            date = date.strftime('%d/%m/%Y')
            debut = form.cleaned_data["debut"]
            message = form.cleaned_data["message"]
            obj = form.save(commit=False)
            obj.slug = code
            obj.save()
            id = obj.id
            envoi = True
            if sendmail:
                users = ErnestoUser.objects.filter(is_ernesto=True)
                for user in users:
                    if user.mails:
                        try:
                            Subject = "[Pouet-Pouet] %s, le %s" % (nom, date)
                            sender = 'fanfare@ens.fr'
                            receivers = [user.user.email]
                            if message != '':
                                text = "%s\n\n" % message
                            else:
                                text = "Bonjour, un évémenent a été créé.\n"
                            domain = get_current_site(request).domain
                            text += (
                                "Pour voir l'événement, allez sur %s%s"
                                '\nPour répondre oui allez sur %s%s\n'
                                'Pour répondre non, allez sur %s%s\n'
                                'Pour répondre peut-être, allez sur %s%s\n') \
                                % (domain,
                                   reverse_lazy('view-event', args=[obj.id]),
                                   domain,
                                   reverse_lazy('calendrier.views.repouidir',
                                                args=[user.slug, obj.slug]),
                                   domain,
                                   reverse_lazy('calendrier.views.repnondir',
                                                args=[user.slug, obj.slug]),
                                   domain,
                                   reverse_lazy('calendrier.views.reppedir',
                                                args=[user.slug, obj.slug]))
                            send_mail(Subject, text, sender, receivers)
                        except:
                            erreur = "Une erreur est survenue, le mail n'a " \
                                     + "pas pu être envoyé."
    else:
        form = EventForm()

    return render(request, "calendrier/create.html", locals())


@login_required
def reponse(request, id):
    part = request.user.profile
    ev = Event.objects.get(id=id)
    if request.method == "POST":
        form = ParticipantsForm(request.POST)
        if form.is_valid():
            try:
                p = Participants.objects.get(event=ev, participant=part)
                p.delete()
            except Participants.DoesNotExist:
                pass
            obj = form.save(commit=False)
            obj.event = ev
            obj.participant = part
            obj.save()
            envoi = True
    else:
        form = ParticipantsForm()
    return render(request, "calendrier/reponse.html", locals())


def repouidir(request, codeus, codeev):
    part = ErnestoUser.objects.get(slug=codeus)
    ev = Event.objects.get(slug=codeev)
    try:
        p = Participants.objects.get(event=ev, participant=part)
        p.delete()
    except Participants.DoesNotExist:
        pass
    obj = Participants()
    obj.participant = part
    obj.event = ev
    obj.reponse = "oui"
    obj.save()
    # envoi = True  # Variable not used ???
    return redirect('calendrier.views.home')


def reppedir(request, codeus, codeev):
    part = ErnestoUser.objects.get(slug=codeus)
    ev = Event.objects.get(slug=codeev)
    try:
        p = Participants.objects.get(event=ev, participant=part)
        p.delete()
    except Participants.DoesNotExist:
        pass
    obj = Participants()
    obj.participant = part
    obj.event = ev
    obj.reponse = "pe"
    obj.save()
    # envoi = True  # Variable not used ???
    return redirect('calendrier.views.home')


def repnondir(request, codeus, codeev):
    part = ErnestoUser.objects.get(slug=codeus)
    ev = Event.objects.get(slug=codeev)
    try:
        p = Participants.objects.get(event=ev, participant=part)
        p.delete()
    except Participants.DoesNotExist:
        pass
    obj = Participants()
    obj.participant = part
    obj.event = ev
    obj.reponse = "non"
    obj.save()
    # envoi = True  # Variable not used ???
    return redirect('calendrier.views.home')


class EventUpdate(UpdateView):
    model = Event
    template_name = "calendrier/update.html"
    form_class = ModifEventForm
    success_url = reverse_lazy(home)

    @method_decorator(chef_required)
    def dispatch(self, *args, **kwargs):
        return super(EventUpdate, self).dispatch(*args, **kwargs)


class EventDelete(DeleteView):
    model = Event
    template_name = "calendrier/delete.html"
    success_url = reverse_lazy(home)

    @method_decorator(chef_required)
    def dispatch(self, *args, **kwargs):
        return super(EventDelete, self).dispatch(*args, **kwargs)

# Create your views here.