from django.shortcuts import get_object_or_404, render
from django.urls import reverse

from boards import settings
from boards.abstracts.constants import PARAM_PAGE
from boards.abstracts.paginator import get_paginator
from boards.models import TagAlias
from boards.settings import SECTION_VIEW
from boards.views.base import BaseBoardView
from boards.views.mixins import PaginatedMixin

IMAGES_PER_PAGE = settings.get_int(SECTION_VIEW, 'ImagesPerPageGallery')

TEMPLATE = 'boards/tag_gallery.html'


class TagGalleryView(BaseBoardView, PaginatedMixin):

    def get(self, request, tag_name):
        page = int(request.GET.get(PARAM_PAGE, 1))

        params = dict()
        tag_alias = get_object_or_404(TagAlias, name=tag_name)
        tag = tag_alias.parent
        params['tag'] = tag
        paginator = get_paginator(tag.get_images(), IMAGES_PER_PAGE,
                                  current_page=page)
        params['paginator'] = paginator
        params['images'] = paginator.page(page).object_list
        paginator.set_url(reverse('tag_gallery', kwargs={'tag_name': tag_name}),
                          request.GET.dict())
        params.update(self.get_page_context(paginator, page))

        return render(request, TEMPLATE, params)