import json

from django.http import HttpResponse, Http404, FileResponse, HttpResponseRedirect
from django.template import loader, RequestContext
from django.contrib.auth.decorators import login_required
from .models import *
from django.conf import settings
from GeneralApp.funcs import get_inter_http_respose
from django.utils.translation import gettext_lazy as _
from django.urls import reverse


def DocsView(request, version=None, art_url=None):
    art = None
    kwargs = {}

    if art_url:
        kwargs['url'] = art_url
        try:
            art = DocArt.objects.get(**kwargs)
            Dict = {'cur_article': art}
            t = loader.get_template('pages/p_documentation.html')
            return get_inter_http_respose(t, Dict, request)
        except DocArt.DoesNotExist:
            raise Http404

    if version:
        try:
            vers_obj = DocVersion.objects.get(url=version)
            if vers_obj:
                art = vers_obj.get_article()
                if art:
                    url = reverse(
                        'docs_art_page',
                        kwargs={'version': version, 'art_url': art.url}
                    )
                    return HttpResponseRedirect(url)
        except DocVersion.DoesNotExist:
            raise Http404

    art = DocArt.objects.exclude(
        versions=None
    ).filter(
        enable=True, parent=None
    ).order_by('versions__order', 'order').first()
    if art:
        url = reverse(
            'docs_art_page',
            kwargs={'version': art.versions.order_by('order').first().url, 'art_url': art.url}
        )
        return HttpResponseRedirect(url)


    if not art:
        raise Http404