from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.contrib.sites.shortcuts import get_current_site
from django.http import HttpResponseRedirect
from django.urls import reverse, reverse_lazy
from django.views.generic.base import TemplateView
from django.views.generic.edit import FormView

from . import app_settings, helpers
from ..account import app_settings as account_settings
from ..account.adapter import get_adapter as get_account_adapter
from ..account.views import (
    AjaxCapableProcessFormViewMixin,
    CloseableSignupMixin,
    RedirectAuthenticatedUserMixin,
)
from ..utils import get_form_class
from .adapter import get_adapter
from .forms import DisconnectForm, SignupForm
from .models import SocialAccount, SocialLogin


class SignupView(RedirectAuthenticatedUserMixin, CloseableSignupMixin,
                 AjaxCapableProcessFormViewMixin, FormView):
    form_class = SignupForm
    template_name = (
        'socialaccount/signup.' + account_settings.TEMPLATE_EXTENSION)

    def get_form_class(self):
        return get_form_class(app_settings.FORMS,
                              'signup',
                              self.form_class)

    def dispatch(self, request, *args, **kwargs):
        self.sociallogin = None
        data = request.session.get('socialaccount_sociallogin')
        if data:
            self.sociallogin = SocialLogin.deserialize(data)
        if not self.sociallogin:
            return HttpResponseRedirect(reverse('account_login'))
        return super(SignupView, self).dispatch(request, *args, **kwargs)

    def is_open(self):
        return get_adapter(self.request).is_open_for_signup(
            self.request,
            self.sociallogin)

    def get_form_kwargs(self):
        ret = super(SignupView, self).get_form_kwargs()
        ret['sociallogin'] = self.sociallogin
        return ret

    def form_valid(self, form):
        self.request.session.pop('socialaccount_sociallogin', None)
        form.save(self.request)
        return helpers.complete_social_signup(self.request,
                                              self.sociallogin)

    def get_context_data(self, **kwargs):
        ret = super(SignupView, self).get_context_data(**kwargs)
        ret.update(dict(site=get_current_site(self.request),
                        account=self.sociallogin.account))
        return ret

    def get_authenticated_redirect_url(self):
        return reverse(connections)


signup = SignupView.as_view()


class LoginCancelledView(TemplateView):
    template_name = (
        "socialaccount/login_cancelled." + account_settings.TEMPLATE_EXTENSION)


login_cancelled = LoginCancelledView.as_view()


class LoginErrorView(TemplateView):
    template_name = (
        "socialaccount/authentication_error." +
        account_settings.TEMPLATE_EXTENSION)


login_error = LoginErrorView.as_view()


class ConnectionsView(AjaxCapableProcessFormViewMixin, FormView):
    template_name = (
        "socialaccount/connections." +
        account_settings.TEMPLATE_EXTENSION)
    form_class = DisconnectForm
    success_url = reverse_lazy("socialaccount_connections")

    def get_form_class(self):
        return get_form_class(app_settings.FORMS,
                              'disconnect',
                              self.form_class)

    def get_form_kwargs(self):
        kwargs = super(ConnectionsView, self).get_form_kwargs()
        kwargs["request"] = self.request
        return kwargs

    def form_valid(self, form):
        get_account_adapter().add_message(self.request,
                                          messages.INFO,
                                          'socialaccount/messages/'
                                          'account_disconnected.txt')
        form.save()
        return super(ConnectionsView, self).form_valid(form)

    def get_ajax_data(self):
        account_data = []
        for account in SocialAccount.objects.filter(user=self.request.user):
            provider_account = account.get_provider_account()
            account_data.append({
                'id': account.pk,
                'provider': account.provider,
                'name': provider_account.to_str()
            })
        return {
            'socialaccounts': account_data
        }


connections = login_required(ConnectionsView.as_view())