blog

import subprocess

from django.utils.translation import ugettext as _

from django.shortcuts import get_object_or_404, render # This allows to render the template with the view here. It's pretty cool and important.

from django.http import HttpResponseRedirect, HttpResponse

from django.core.urlresolvers import reverse

from django.template import loader # This allows to actually load the template.

from .models import *

from .forms import CommentForm

from django.core.exceptions import ObjectDoesNotExist

from django.utils import translation

GERMAN = "de"

SPANISH = "es"

FRENCH = "fr"

DUTCH = "nl"

ENGLISH = "en"

footer_links = [

        [_("Back to main page"), "/blog"],

        [_("Contact"), "mailto:maarten.vangeneugden@student.uhasselt.be"],

        ]

footer_description = _("Maarten's personal blog, with sprinkles and a dollop of healthy bugs.")

def org_to_html(file_path):

    """ Converts the given org formatted file to HTML.

    This function directly returns the resulting HTML code. This function uses

    the amazing Haskell library Pandoc to convert the file (and takes care

    of header id's and all that stuff).

    """

    # FIXME: Remove hardcoded link to media. Replace with media tag!

    # XXX: The reason I'm first converting all occurences of .jpg][ and .png][

    # to .jpgPANDOCBUG][ and .pngPANDOCBUG][, is because of a Pandoc bug that

    # removes the text links for images. It is afterwards converted back, no

    # worries.

    file = open("/srv/django/website/media/"+file_path, "r", encoding="utf-8")

    text = file.read()

    file.close()

    text = text.replace(".jpg][", ".jpgPANDOCBUG][")

    text = text.replace(".png][", ".pngPANDOCBUG][")

    file = open("/tmp/blog-file.org", "w", encoding="utf-8")

    file.write(text)

    file.close()

    html_text = subprocess.check_output(["pandoc", "--from=org", "--to=html","/tmp/blog-file.org"])

    html_text = html_text.replace(".jpgPANDOCBUG", ".jpg")

    html_text = html_text.replace(".pngPANDOCBUG", ".png")

    return html_text

def get_available_post_languages(post):

    """ Returns the language codes for which a blog post exists. This function

    always returns English (because that field mustn't be empty).

    So say a blog post has an English, Dutch and French version (which means

    english_file, french_file and dutch_file aren't empty), the function will return {"en",

    "fr", "nl"}. """

    available_languages = {ENGLISH}

    if post.german_file != "":

        available_languages.add(GERMAN)

    if post.spanish_file != "":

        available_languages.add(SPANISH)

    if post.french_file != "":

        available_languages.add(FRENCH)

    if post.dutch_file != "":

        available_languages.add(DUTCH)

    return available_languages

def index(request):

    template = "blog/index.html"

    posts = Post.objects.all()

    language = translation.get_language()

    post_links = []

    for post in posts:

        blog_file = post.text_file()

        blog_text = org_to_html(blog_file.name)

        # TODO: The link can possibly be reversed in the DTL using the title, which is actually

        # a cleaner way to do it. Investigate.

        link = reverse("blog-post-language", args=[language, post.slug()])

        post_links.append([post.title(), post.published, blog_text, link])

    context = {

            'posts': post_links,

            'materialDesign_color': "brown",

            'materialDesign_accentColor': "yellow",

            'navbar_backArrow': True,

            'footer_links': footer_links,

            'footer_description': footer_description,

            }

    if not request.session.get("feed-fab-introduction-seen", default=False):

        context['introduce_feed'] = True

        request.session['feed-fab-introduction-seen'] = True

    return render(request, template, context)

def post(request, post_slug, language=None):

    if request.method == "POST":  # Handling a reply if one is sent

        form = CommentForm(request.POST)

        if form.is_valid():

            new_comment = form.save(commit=False)

            for post in posts:

                if post.slug(language) == post_slug:

                    new_comment.post = post

                    new_comment.save()

    if language is not None:

        if translation.check_for_language(language):

            translation.activate(language)

            request.session[translation.LANGUAGE_SESSION_KEY] = language

            #return post(request, post_slug)

    else:

        language = translation.get_language()

    template = "blog/post.html"

    posts = Post.objects.all()

    #comments = Comment.objects.filter(post

    for post in posts:

        if post.slug(language) == post_slug:

            comments = Comment.objects.filter(post=post)

            form = CommentForm()

            post_file = post.text_file(language)

            post_text = org_to_html(post_file.name)

            context = {

                'comments': comments,

                'form' : form,

                'human_post_title': post.title(language),

                'materialDesign_color': "brown",

                'materialDesign_accentColor': "yellow",

                'title': post.title(language),

                'navbar_title': post.title(language),

                'navbar_backArrow': False,

                'post_slug': post_slug,

                'footer_links': footer_links,

                'footer_description': footer_description,

                }

            # Getting all available article links

            available = get_available_post_languages(post)

            if ENGLISH in available:

                context['english_link'] = reverse("blog-post-language", args=[ENGLISH, post.slug(ENGLISH)])

            if DUTCH in available:

                context['dutch_link'] = reverse("blog-post-language", args=[DUTCH, post.slug(DUTCH)])

            if FRENCH in available:

                context['french_link'] = reverse("blog-post-language", args=[FRENCH, post.slug(FRENCH)])

            if SPANISH in available:

                context['spanish_link'] = reverse("blog-post-language", args=[SPANISH, post.slug(SPANISH)])

            if GERMAN in available:

                context['german_link'] = reverse("blog-post-language", args=[GERMAN, post.slug(GERMAN)])

            return render(request, template, context)

def rss(request):

    template = "blog/feed.rss"

    context = {

        'items': FeedItem.objects.all(),

        }

    return render(request, template, context)