from django.contrib import messages
from django.urls import reverse, reverse_lazy
from django.core.mail import send_mail
from django.shortcuts import get_object_or_404, redirect, render
from django.contrib.admin.views.decorators import staff_member_required
from django.template.loader import render_to_string
from django.contrib.auth import views as auth_views

from settings.forms import SelectUserForm
from content.models import Category

from .models import School
from . import forms


@staff_member_required
def create_user(request):
    user_form = forms.CreateUser(request.POST or None)
    if user_form.is_valid():
        u = user_form.save()
        send_mail(
            "Bienvenue sur Il était une fois dans l'Est.",
            render_to_string("users/welcome_user.txt", {'id':u.username}),
            "noreply.festart@rezometz.org",
            [u.email],
            fail_silently=False
        )
        messages.success(request, "L'utilisateur {} {} a bien été créé un mail lui a été envoyé pour réinitialiser son mot de passe.".format(
            u.first_name, u.last_name))
        return redirect(reverse('settings:index'))
    return render(request, 'edit.html', {
        'form': user_form,
        'title': "Création d'un utilisateur",
        'validate': "Créer"
    })


@staff_member_required
def create_school(request):
    school_form = forms.CreateSchool(request.POST or None)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été créée.".format(s.name))
        return redirect(reverse('settings:index'))
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Création d'une école",
        'validate': "Créer"
    })


def school(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    return render(request, 'users/school.html', {'school': school})


def edit_phone(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    school_form = forms.EditPhone(request.POST or None, instance=school)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.name))
        return redirect(s.get_absolute_url())
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Édition du numéro de téléphone",
        'validate': "Modifier"
    })


def edit_logo(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    school_form = forms.EditLogo(request.POST or None, instance=school)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.name))
        return redirect(s.get_absolute_url())
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Édition du logo",
        'validate': "Modifier"
    })


def edit_mail(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    user_form = forms.EditMail(request.POST or None, instance=school.admin)
    if user_form.is_valid():
        s = user_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.school.name))
        return redirect(s.school.get_absolute_url())
    return render(request, 'edit.html', {
        'form': user_form,
        'title': "Édition du numéro du mail",
        'validate': "Modifier"
    })


def edit_jury_1(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    school_form = forms.EditJury1(request.POST or None, instance=school)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.name))
        return redirect(s.get_absolute_url())
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Édition du jury 1",
        'validate': "Modifier"
    })


def edit_jury_2(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    school_form = forms.EditJury2(request.POST or None, instance=school)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.name))
        return redirect(s.get_absolute_url())
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Édition du jury 2",
        'validate': "Modifier"
    })


def edit_name(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    school_form = forms.EditName(request.POST or None, instance=school)
    if school_form.is_valid():
        s = school_form.save()
        messages.success(
            request, "L'école {} a bien été modifiée.".format(s.name))
        return redirect(s.get_absolute_url())
    return render(request, 'edit.html', {
        'form': school_form,
        'title': "Édition du nom",
        'validate': "Modifier"
    })


@staff_member_required
def edit_admin(request, pk):
    school = get_object_or_404(School, pk=pk)
    user_form = SelectUserForm(request.POST or None)
    user_form.populate()
    if user_form.is_valid():
        user = user_form.get_user()
        school.admin = user
        school.save()
        user.save()
        messages.success(request, user.username +
                         ' a été nommé admin de ' + school.name)
        return redirect(reverse('settings:index'))
    return render(request, 'edit.html', {
        'form': user_form,
        'title': "Définir l'administrateur de {}".format(school.name),
        'validate': 'Ajouter'
    })


def validate(request, pk):
    school = get_object_or_404(School, pk=pk)
    can = request.user.is_staff or request.user == school.admin
    if not can:
        messages.error(request, 'Vous ne pouvez pas accéder à cette page')
        return redirect(reverse('home'))
    jury_1_ok = any([
        school.first_name_j1,
        school.last_name_j1,
        school.phone_j1,
        school.mail_j1
    ])
    jury_2_ok = any([
        school.first_name_j2,
        school.last_name_j2,
        school.phone_j2,
        school.mail_j2
    ])
    logo_ok = school.logo
    phone_ok = school.phone
    mail_ok = school.admin.email
    if not jury_1_ok:
        messages.warning(request, 'Pas de jury n°1 défini.')
    if not jury_2_ok:
        messages.warning(request, 'Pas de jury n°2 défini.')
    if not logo_ok:
        messages.warning(request, 'Pas de logo défini.')
    if not phone_ok:
        messages.error(request,  'Pas de téléphone défini.')
    if not mail_ok:
        messages.error(request, 'Pas de mail défini.')

    for category in Category.objects.all():
        if not category.content_set.filter(school_owner=school):
            messages.warning(
                request, 'Pas de contenu dans la catégorie {}.'.format(category.name))

    if phone_ok and mail_ok:
        school.validated = True
        school.save()
        messages.success(request, 'Inscription validée.')

    return redirect(school.get_absolute_url())


class PasswordChangeDoneView(auth_views.PasswordChangeDoneView):
    template_name = "home.html"

    def dispatch(self, *args, **kwargs):
        r = super().dispatch(*args, **kwargs)
        messages.success(self.request, "Le mot de passe a été changé.")
        return r


class PasswordResetView(auth_views.PasswordResetView):
    template_name = "edit.html"
    success_url = reverse_lazy('home')
    email_template_name = "users/password_reset_mail.html"

    def form_valid(self, form):
        messages.success(self.request, "Un mail pour le changement de mot de passe a été envoyé.")
        return super().form_valid(form)


class PasswordResetCompleteView(auth_views.PasswordResetCompleteView):
    template_name = "home.html"

    def dispatch(self, *args, **kwargs):
        r = super().dispatch(*args, **kwargs)
        messages.success(self.request, "Votre mot de passe a été réinitialisé.")
        return r