"""
The common views of the different organisations.
- Authentication
- Profile
- Clubs
"""

from django.shortcuts import render, redirect
from django.contrib.auth.decorators import login_required
from django.contrib.auth.mixins import AccessMixin
from django.contrib.auth.models import User
from django.contrib.auth.views import (
    login as django_login, logout as django_logout
)
from django.contrib.messages.views import SuccessMessageMixin
from django.views.generic import DetailView, TemplateView
from django.utils.decorators import method_decorator
from django.utils.translation import ugettext_lazy as _

from multi_form_view import MultiModelFormView

from .forms import ProfileForm, UserForm
from .models import Club


def login(request):
    if request.user.is_authenticated():
        return redirect("home")
    context = {}
    # Fetch the next page from the request data
    if request.method == "GET" and 'next' in request.GET:
        context['next'] = request.GET['next']
    return render(request, "gestion/login_switch.html", context)


def login_ext(request):
    if request.method == "POST" and "username" in request.POST:
        try:
            user = User.objects.get(username=request.POST["username"])
            if user.profile.login_clipper:
                return render(request, "gestion/error.html",
                              {"error_type": "use_clipper_login"})
            if not user.has_usable_password() or user.password in ("", "!"):
                return render(request, "gestion/error.html",
                              {"error_type": "no_password"})
        except User.DoesNotExist:
            pass
    context = {}
    # Fetch the next page from the request data
    if request.method == "GET" and 'next' in request.GET:
        context['next'] = request.GET['next']
    if request.method == "POST" and 'next' in request.POST:
        context['next'] = request.POST['next']
    return django_login(request, template_name='gestion/login.html',
                        extra_context=context)


@login_required
def logout(request):
    if request.user.profile.login_clipper:
        return redirect("gestion:cas_logout")
    else:
        return django_logout(request)


@method_decorator(login_required, name='dispatch')
class ProfileView(TemplateView):
    template_name = 'gestion/profile.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['memberships'] = self.get_memberships()
        return context

    def get_memberships(self):
        """Returns the clubs memberships of connected user.

        A membership is an instance of 'ClubUser' model.

        Returns:
            List of (club, membership).

        """
        qs = (
            self.request.user.clubuser_set
            .select_related('club')
            .order_by('-is_respo', 'club__name')
        )
        return [(m.club, m) for m in qs]


profile = ProfileView.as_view()


@method_decorator(login_required, name='dispatch')
class EditProfileView(SuccessMessageMixin, MultiModelFormView):
    template_name = 'gestion/profile_edit.html'
    form_classes = {
        'user': UserForm,
        'profile': ProfileForm,
    }
    success_url = '/profile/'
    success_message = _("Votre profil a été mis à jour avec succès !")

    def get_objects(self):
        user = self.request.user
        return {
            'user': user,
            'profile': user.profile,
        }


profile_edit = EditProfileView.as_view()


class ClubDetailView(AccessMixin, DetailView):
    model = Club

    def dispatch(self, request, *args, **kwargs):
        if (request.user.is_authenticated and
                self.get_object().is_respo(request.user)):
            return super().dispatch(request, *args, **kwargs)
        else:
            return self.handle_no_permission()

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['memberships'] = self.get_memberships()
        return context

    def get_memberships(self):
        """Returns the club' members with their membership.

        A membership is an instance of 'ClubUser' model.

        Returns:
            List of (user, membership).

        """
        qs = (
            self.object.clubuser_set
            .select_related('user')
            .order_by('-is_respo', 'user__first_name')
        )
        print(qs)
        return [(m.user, m) for m in qs]


club_detail = ClubDetailView.as_view()