from django.shortcuts import render
from calendrier.forms import EventForm, ParticipantsForm
from calendrier.models import Event, Participants
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

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

from calendrier.calend import EventCalendar
from calendar import monthrange
from datetime import *

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)
    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)
    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 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)
            id= obj.id
            obj.slug = code
            obj.save()
            envoi = True
            if sendmail:
                try:
                    smtpObj = smtplib.SMTP('clipper.ens.fr', 25)
                    sender = 'fanfare@ens.fr'
                    receivers = 'aymeric.fromherz@ens.fr'
                    msg = MIMEMultipart("alternative")
                    msg["Subject"] = nom + ", le " + date
                    msg["From"] = sender
                    msg["To"] = receivers
                    text = "Bonjour, un évémenent a été créé."
                    if message != '':
                        text = message
                    text+= '\nPour répondre, allez sur www.ernestophone.ens.fr/calendar/' + id + '/reponse'
                    text = MIMEText(text, 'plain')
                    msg.attach(text)
                    smtpObj.sendmail(sender, receivers, msg.as_string())
                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
    return render(request,"calendrier/home.html", locals())


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

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

class EventUpdate(UpdateView):
    model = Event
    template_name = "calendrier/update.html"
    form_class = EventForm
    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.