# coding: utf-8

from django.shortcuts import render

from django.views.generic import DetailView
from django.views.generic.edit import UpdateView, CreateView
from django import forms
from django.urls import reverse
from django.contrib.auth.decorators import login_required
from braces.views import LoginRequiredMixin

from avisstage.models import Normalien, Stage, Lieu, AvisLieu, AvisStage
from widget import LatLonField

# Page d'accueil
def index(request):
    return render(request, 'avisstage/index.html')

# Espace personnel
@login_required
def perso(request):
    return render(request, 'avisstage/perso.html')

# Profil
class ProfilEdit(UpdateView, LoginRequiredMixin):
    model = Normalien
    fields = ['nom', 'promotion', 'mail']
    template_name = 'avisstage/formulaires/profil.html'

    def get_object(self):
        return self.request.user.profil
    
    def get_context_data(self, **kwargs):
        print kwargs
        return super(ProfilEdit, self).get_context_data(**kwargs)

    def get_success_url(self):
        return reverse('avisstage:perso')
    
class ProfilView(DetailView, LoginRequiredMixin):
    model = Normalien
    template_name = 'avisstage/detail/profil.html'
    
    def get_object(self):
        return Normalien.objects.get(user__username=self.kwargs.get('username'))

# Stages
class StageForm(forms.ModelForm):
    date_widget = forms.DateInput(attrs={"class":"datepicker"})
    date_debut = forms.DateField(input_formats=["%d/%m/%Y"], widget=date_widget)
    date_fin = forms.DateField(input_formats=["%d/%m/%Y"], widget=date_widget)

    class Meta:
        model = Stage
        fields = ['sujet', 'date_debut', 'date_fin', 'type_stage', 'thematiques', 'matieres', 'encadrants', 'lieux']

    def __init__(self, *args, **kwargs):
        if "request" in kwargs:
            self.request = kwargs.pop("request")
        super(StageForm, self).__init__(*args, **kwargs)
        if hasattr(self, 'instance'):
            self.prev_lieux = self.instance.avislieu_set.all()
        else:
            self.prev_lieux = None

    def save(self, commit=True):
        if self.instance.id is None:
            self.instance.auteur = self.request.user.profil

        stage = super(StageForm, self).save(commit=False)

        if commit:
            stage.save()

        # Lecture des lieux, conservation des critiques précédentes
        alieux = self.cleaned_data['lieux']
        new_lieux = []
        #print self.instance.lieux
        if not (self.prev_lieux is None) and len(self.prev_lieux) > 0:
            old_avislieux = {avis.lieu_id: avis for avis in self.prev_lieux}
            for (k, nlieu) in enumerate(alieux):
                if nlieu in old_avislieux:
                    # Ce lien existait déjà avant : rien à faire
                    del old_avislieux[nlieu]
                else:
                    # C'est un nouveau lien
                    new_lieux.append(nlieu)

            old_avislieux = old_avislieux.values()
            for k, avislieu in enumerate(old_avislieux):
                if k > len(new_lieux):
                    # Avis à supprimer
                    avislieu.delete()
                else:
                    # On récupère le(s) avis pour le(s) nouveau(x) lieu(x)
                    avislieu.lieu = new_lieux[k]
                    avislieu.save()
            new_lieux = new_lieux[len(old_avislieux):]
        else:
            new_lieux = alieux
        print(new_lieux)
        # On crée les nouveaux avislieu qui vont bien
        AvisLieu.objects.bulk_create([AvisLieu(lieu=lieu, stage=stage) for lieu in new_lieux])
        

        

class StageAjout(CreateView, LoginRequiredMixin):
    model = Stage
    form_class = StageForm
    template_name = 'avisstage/formulaires/stage.html'

    def get_form_kwargs(self):
        kwargs = super(StageAjout, self).get_form_kwargs()
        kwargs.update({'request': self.request})
        return kwargs

class StageEdit(UpdateView, LoginRequiredMixin):
    model = Stage
    form_class = StageForm
    template_name = 'avisstage/formulaires/stage.html'

    def get_queryset(self):
        # Autorise les modifications des seuls stages qu'on "possède"
        queryset = super(StageEdit, self).get_queryset()
        return queryset.filter(auteur=self.request.user.profil)
    
    def get_form_kwargs(self):
        kwargs = super(StageEdit, self).get_form_kwargs()
        kwargs.update({'request': self.request})
        return kwargs

    def get_success_url(self):
        return reverse('avisstage:stage', self.instance.id)
   
class StageView(DetailView, LoginRequiredMixin):
    model = Stage
    template_name = 'avisstage/detail/stage.html'


# Lieux des stages
class LieuForm(forms.ModelForm):
    coord = LatLonField()
    
    class Meta:
        model = Lieu
        fields = ['nom', 'type_lieu', 'ville', 'pays', 'coord']

class LieuAjout(CreateView, LoginRequiredMixin):
    model = Lieu
    form_class = LieuForm
    template_name = 'avisstage/formulaires/lieu.html'


def recherche(request):
    return render(request, 'avisstage/recherche.html')

def feedback(request):
    return render(request, 'avisstage/feedback.html')