''' book list views'''
from django.contrib.auth.decorators import login_required
from django.db.models import Q
from django.http import HttpResponseNotFound
from django.shortcuts import get_object_or_404, redirect
from django.template.response import TemplateResponse
from django.utils.decorators import method_decorator
from django.views import View

from bookwyrm import forms, models
from bookwyrm.activitypub import ActivitypubResponse
from .helpers import is_api_request, object_visible_to_user, privacy_filter


# pylint: disable=no-self-use
class Lists(View):
    ''' book list page '''
    def get(self, request):
        ''' display a book list '''
        user = request.user if request.user.is_authenticated else None
        lists = models.List.objects.filter(
            ~Q(user=user),
        ).all()
        lists = privacy_filter(request.user, lists, ['public', 'followers'])
        data = {
            'title': 'Lists',
            'lists': lists,
            'list_form': forms.ListForm()
        }
        return TemplateResponse(request, 'lists/lists.html', data)

    @method_decorator(login_required, name='dispatch')
    # pylint: disable=unused-argument
    def post(self, request):
        ''' create a book_list '''
        form = forms.ListForm(request.POST)
        if not form.is_valid():
            print(form.errors)
            return redirect('lists')
        book_list = form.save()
        return redirect(book_list.local_path)


class List(View):
    ''' book list page '''
    def get(self, request, list_id):
        ''' display a book list '''
        book_list = get_object_or_404(models.List, id=list_id)
        if not object_visible_to_user(request.user, book_list):
            return HttpResponseNotFound()

        if is_api_request(request):
            return ActivitypubResponse(book_list.to_activity())

        suggestions = request.user.shelfbook_set.all().filter(
            ~Q(book__in=book_list.books)
        )

        data = {
            'title': '%s | Lists' % book_list.name,
            'list': book_list,
            'suggested_books': [s.book for s in suggestions[:5]],
        }
        return TemplateResponse(request, 'lists/list.html', data)


    @method_decorator(login_required, name='dispatch')
    # pylint: disable=unused-argument
    def post(self, request, list_id):
        ''' edit a book_list '''
        book_list = get_object_or_404(models.List, id=list_id)
        return redirect(book_list.local_path)