from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.shortcuts import render, redirect
from django.template.loader import render_to_string
from django.views.decorators.cache import cache_page
from django.urls import reverse
from django.forms import modelformset_factory
from re2o.views import form

from re2o.base import (
    re2o_paginator,
)

from re2o.acl import(
    can_view,
    can_view_all,
    can_edit,
    can_create,
)

from preferences.models import GeneralOption

from .models import(
    Ticket,
)

from .preferences.models import(
    Preferences,
)

from .forms import (
    NewTicketForm,
    ChangeStatusTicketForm,
)

from .preferences.forms import (
    EditPreferencesForm,
)



def new_ticket(request):
    """ Vue de création d'un ticket """
    ticketform = NewTicketForm(request.POST or None)

    if request.method == 'POST':
        ticketform = NewTicketForm(request.POST)

        if ticketform.is_valid():
            email = ticketform.cleaned_data.get('email')
            ticket = ticketform.save(commit=False)
            #raise ValueError("email: {} type: {}".format(email,type(email))) 
            if request.user.is_authenticated:
                ticket.user = request.user
                ticket.save()
                messages.success(request,'Votre ticket a été ouvert. Nous vous répondrons le plus rapidement possible.')
                return redirect(reverse('users:profil',kwargs={'userid':str(request.user.id)}))
            if not request.user.is_authenticated and email != "":
                ticket.save()
                messages.success(request,'Votre ticket a été ouvert. Nous vous répondront le plus rapidement possible.')
                return redirect(reverse('index'))
            else:    
                messages.error(request,"Vous n'êtes pas authentifié, veuillez vous authentifier ou fournir une adresse mail pour que nous puissions vous recontacter")
                return form({'ticketform':ticketform,},'tickets/form_ticket.html',request)
            
    else:
        ticketform = NewTicketForm
    return form({'ticketform':ticketform,},'tickets/form_ticket.html',request)

@login_required
@can_view(Ticket)
def aff_ticket(request, ticket, ticketid):
    """Vue d'affichage d'un ticket"""
    changestatusform = ChangeStatusTicketForm(request.POST)
    if request.method == 'POST':
        ticket.solved = not ticket.solved
        ticket.save()
    return render(request,'tickets/aff_ticket.html',{'ticket':ticket,'changestatusform':changestatusform})

@login_required
@can_view_all(Ticket)
def aff_tickets(request):
    """ Vue d'affichage de tout les tickets """
    tickets_list = Ticket.objects.all().order_by('-date')
    nbr_tickets = tickets_list.count()
    nbr_tickets_unsolved = tickets_list.filter(solved=False).count()
    if nbr_tickets: 
        last_ticket_date = tickets_list.first().date
    else:
        last_ticket_date = "Jamais"
    
    pagination_number = (GeneralOption
                               .get_cached_value('pagination_number'))

    tickets = re2o_paginator(
		request,
		tickets_list,
		pagination_number,
    )

    context = {'tickets_list':tickets,
                'last_ticket_date':last_ticket_date,
                'nbr_tickets':nbr_tickets,
                'nbr_tickets_unsolved':nbr_tickets_unsolved}

    return render(request,'tickets/index.html',context=context)


def edit_preferences(request):
    """ Vue d'édition des préférences des tickets """

    preferences_instance, created = Preferences.objects.get_or_create(id=1)
    preferencesform = EditPreferencesForm(
        request.POST or None,
        instance = preferences_instance,)
    
    if preferencesform.is_valid():
        if preferencesform.changed_data:
            preferencesform.save()
            messages.success(request,'Préférences des Tickets mises à jour')
            return redirect(reverse('preferences:display-options',))
        else:
            messages.error(request,'Formulaire Invalide')
            return form({'preferencesform':preferencesform,},'tickets/form_preferences.html',request)
    return form({'preferencesform':preferencesform,},'tickets/form_preferences.html',request)
    
# views cannoniques des apps optionnels    
def profil(request,user):
    """ Vue cannonique d'affichage des tickets dans l'accordeon du profil"""
    tickets_list = Ticket.objects.filter(user=user).all().order_by('-date')
    nbr_tickets = tickets_list.count()
    nbr_tickets_unsolved = tickets_list.filter(solved=False).count()
    if nbr_tickets: 
        last_ticket_date = tickets_list.first().date
    else:
        last_ticket_date = "Jamais"

    pagination_number = (GeneralOption
                               .get_cached_value('pagination_large_number'))

    tickets = re2o_paginator(
		request,
		tickets_list,
		pagination_number,
    )

    context = {'tickets_list':tickets,
                'last_ticket_date':last_ticket_date,
                'nbr_tickets':nbr_tickets,
                'nbr_tickets_unsolved':nbr_tickets_unsolved}
    return render_to_string('tickets/profil.html', context=context, request=request, using=None)

def preferences(request):
    """ Vue cannonique d'affichage des tickets dans l'affichage du profil"""
    preferences = Preferences.objects.first()
    context = {'preferences':preferences}
    return render_to_string('tickets/preferences.html', context=context, request=request, using=None)

def contact(request):
    """Vue cannonique d'affichage d'une adresse dans la page contact.
    Utilisée ici pour proposer l'ouverture d'un ticket"""
    return render_to_string('tickets/contact.html')

def navbar_user(request):
    """Vue cannonique d'affichage des tickets dans la navbar"""
    return render_to_string('tickets/navbar.html')

def navbar_logout(request):
    """Vue cannonique d'affichage du lien de creation de ticket
    lorsque l'utilisateur est déconnecté dans la navbar"""
    return render_to_string('tickets/navbar_logout.html')