def recent_feed():
    feed = AtomFeed('Recent Articles', feed_url=request.url, url=request.url_root)
    threads = Thread.query.order_by(Thread.last_updated.desc()).filter(Thread.user==None).all()
    for thread in threads:
        url = url_for('thread', display_hash=thread.display_hash, title=thread.slug())
        feed.add(thread.title, '', content_type='html', author=thread.display_name, url=url, updated=thread.last_updated, published=thread.date_created)
    return feed.get_response()

 def test_atom_add_one(self):
     a = AtomFeed(title='test_title', id=1)
     f = FeedEntry(
         title='test_title', id=1, updated=datetime.datetime.now())
     assert len(a.entries) == 0
     a.add(f)
     assert len(a.entries) == 1

def feed(site):
    if site == 'hackernews':
        title = 'Hacker News Digest'
        news_list = models.HackerNews.query.order_by('submit_time desc').all()
    else:
        title = 'Startup News Digest'
        news_list = models.StartupNews.query.order_by('submit_time desc').all()

    feed = AtomFeed(title,
                    updated=models.LastUpdated.get(site),
                    feed_url=request.url,
                    url=urljoin(request.url_root, url_for(site)),
                    author={
                        'name': 'polyrabbit',
                        'uri': 'https://github.com/polyrabbit/'}
                    )
    for news in news_list:
        feed.add(news.title,
                 content=news.summary and 
                 ('<img src="%s" style="width: 220px; float: left" />' % news.image.url if news.img_id else '') 
                     + news.summary,
                 author={
                     'name': news.author,
                     'uri': news.author_link
                 } if news.author_link else (),
                 url=news.url,
                 updated=news.submit_time,)
    return feed.get_response()

def atomfeed():
    t = request.args.get('t')
    if not t:
        t = 'url'

    r = get_last(t)
    if not (r.status_code == 200 and len(r.response) > 0):
        return {}

    j = json.loads(r.response[0])

    if len(j) < 1:
        return {}

    feed = AtomFeed('Les liens (pas forcement) SFW de GCU-Squad!',
                    feed_url=request.url, url=request.url_root,
                    subtitle='Adresses vues sur le canal #[email protected]')
    for item in j:
        post = item['_source']
        for url in post['urls']:
            datefmt = '%Y-%m-%dT%H:%M:%S.%f'
            pubdate = datetime.datetime.strptime(post['fulldate'], datefmt)
            update = pubdate
            if post['tags']:
                line = '{0} #{1}#'.format(post['line'], ','.join(post['tags']))
            else:
                line = post['line']
            feed.add(title=line, title_type='text', url=url,
                     author=post['nick'], published=pubdate, updated=update)
    return feed.get_response()

def feed():
    blogging_engine = _get_blogging_engine(current_app)
    storage = blogging_engine.storage
    config = blogging_engine.config
    count = config.get("BLOGGING_FEED_LIMIT")
    posts = storage.get_posts(count=count, offset=None, recent=True,
                              user_id=None, tag=None, include_draft=False)

    feed = AtomFeed(
        '%s - All Articles' % config.get("BLOGGING_SITENAME",
                                         "Flask-Blogging"),
        feed_url=request.url, url=request.url_root, generator=None)

    if len(posts):
        feed_posts_fetched.send(blogging_engine.app, engine=blogging_engine,
                                posts=posts)
        for post in posts:
            blogging_engine.process_post(post, render=True)
            feed.add(post["title"], str(post["rendered_text"]),
                     content_type='html',
                     author=post["user_name"],
                     url=config.get("BLOGGING_SITEURL", "")+post["url"],
                     updated=post["last_modified_date"],
                     published=post["post_date"])
        feed_posts_processed.send(blogging_engine.app, engine=blogging_engine,
                                  feed=feed)
    response = feed.get_response()
    response.headers["Content-Type"] = "application/xml"
    return response

def test_feedparser_authors():
    for test in tests:
        if test.skip:
            continue

        feed = AtomFeed(title="Test Feed", feed_url="http://testfeed.com")

        entry = FeedEntry(
            title="Test Entry",
            url="http://testfeed.com/testentry",
            updated=datetime.utcnow(),
            content="Test Entry",
            author=test.namestring,
        )

        feed.entries.append(entry)

        rss = feed.to_string()

        parsed = feedparser.parse(rss)

        assert parsed.entries is not None
        assert len(parsed.entries) == 1

        assert len(parsed.entries[0].authors) == len(test.expected)

def last_24_hr():
  posts = get_recent_posts(filter_recent=True)
  feed = AtomFeed('Recent Articles',
                  feed_url=request.url, url=request.url_root)
  for post in posts:
    add_post_to_feed(feed, post)
  return feed.get_response()

def feed_folder(folder):
    if folder.split('/')[0] != 'admin':
        folder = Folder.query.filter(guid=folder).one()
        if folder:
            posts = Post.query.filter(folder_id=folder.id, status='published', type='post').order_by('created').limit(20, 0, array=True)

            feed = AtomFeed(
                g.options['name']+' • ' + folder.name,
                subtitle=folder.seo_content,
                feed_url=request.url_root+'feed/',
                url=request.url_root,
                generator=None
            )

            for post in posts:
                feed.add(
                    post.title, 
                    post.content,
                    content_type='html',
                    author=post.user.nicename,
                    url=request.url_root+post.guid,
                    updated=post.modified,
                    published=post.created
                )


            response = feed.get_response()
            response.headers["Content-Type"] = 'application/xml'

            return response
        else:
            return is_404()
    else:
        return is_admin_404()

def feed():

    feed = AtomFeed(
        g.options['name'],
        subtitle=g.options['slogan'],
        feed_url=request.url_root+'feed/',
        url=request.url_root,
        generator=None
    )

    posts = Post.query.filter(status='published', type='post').order_by('created').limit(20, 0, array=True)
    for post in posts:
        feed.add(
            post.title, 
            post.content,
            content_type='html',
            author=post.user.nicename,
            url=request.url_root+post.guid,
            updated=post.modified,
            published=post.created
        )


    response = feed.get_response()
    response.headers["Content-Type"] = 'application/xml'

    return response

def _feeds(query=None, title='Recent Articles'):
    posts = db.find("posts.files", query or {}).\
        sort([("uploadDate", -1)]).limit(PAGE_SIZE)

    feed = AtomFeed(title, feed_url=request.url, url=request.url_root)

    from monblog.common.encodings import force_bytes

    for post in posts:
        author = conf.BLOG_SETTINGS.get("AUTHOR", "")
        url = urljoin(request.url_root,
                      url_for("get_post", post_id=str(post["_id"])))
        text = force_bytes(
            db.fs.get(objectid.ObjectId(post["_id"])).read(),
            "ascii",
            errors="ignore")
        feed.add(
            post["metadata"].get("title"),
            markdown(text),
            id=url,
            content_type='html',
            url=url,
            updated=post["uploadDate"],
            published=post["uploadDate"],
            author=post["metadata"].get("author", author))

    return feed.get_response()

def atom_feed(request):
    """
    generates the atom feed with the newest images
    """
    user = User.query.filter_by(
        username = request.matchdict['user']).first()
    if not user or not user.has_privilege(u'active'):
        return render_404(request)

    cursor = MediaEntry.query.filter_by(
        uploader = user.id,
        state = u'processed').\
        order_by(MediaEntry.created.desc()).\
        limit(ATOM_DEFAULT_NR_OF_UPDATED_ITEMS)

    """
    ATOM feed id is a tag URI (see http://en.wikipedia.org/wiki/Tag_URI)
    """
    atomlinks = [{
           'href': request.urlgen(
               'mediagoblin.user_pages.user_home',
               qualified=True, user=request.matchdict['user']),
           'rel': 'alternate',
           'type': 'text/html'
           }]

    if mg_globals.app_config["push_urls"]:
        for push_url in mg_globals.app_config["push_urls"]:
            atomlinks.append({
                'rel': 'hub',
                'href': push_url})

    feed = AtomFeed(
               "MediaGoblin: Feed for user '%s'" % request.matchdict['user'],
               feed_url=request.url,
               id='tag:{host},{year}:gallery.user-{user}'.format(
                   host=request.host,
                   year=datetime.datetime.today().strftime('%Y'),
                   user=request.matchdict['user']),
               links=atomlinks)

    for entry in cursor:
        feed.add(entry.get('title'),
            entry.description_html,
            id=entry.url_for_self(request.urlgen, qualified=True),
            content_type='html',
            author={
                'name': entry.get_uploader.username,
                'uri': request.urlgen(
                    'mediagoblin.user_pages.user_home',
                    qualified=True, user=entry.get_uploader.username)},
            updated=entry.get('created'),
            links=[{
                'href': entry.url_for_self(
                    request.urlgen,
                    qualified=True),
                'rel': 'alternate',
                'type': 'text/html'}])

    return feed.get_response()

    def get(self):
        feed = AtomFeed(
            'Recently Added Watches - Wanna Buy A Watch',
            feed_url=request.url,
            url=request.url_root
        )

        # Prepare query
        watches = session.query(Watch)

        # TODO: .limit(15) and date_added
        watches = watches.order_by(Watch.title).all()

        for watch in watches:
            feed.add(
                watch.title,
                unicode(watch.long_description),
                content_type='html',
                author='wbaw',
                url=BASE_URL + '/' + watch.page_url + '?src=wbawsearch',

                # TODO: Add updated and published
                updated=datetime.now(),
                published=datetime.now()
            )

        return feed.get_response()

    def generate_feed(artifact):
        feed = AtomFeed(
            title=title or 'Feed',
            subtitle=unicode(subtitle or ''),
            subtitle_type=hasattr(subtitle, '__html__') and 'html' or 'text',
            feed_url=feed_url,
            url=embed_url,
            id=get_id(ctx.env.project.id + 'lektor')
        )

        for item in items:
            feed.add(
                get_item_title(item, item_title_field),
                get_item_body(item, item_body_field),
                xml_base=url_to(item, external=True),
                url=url_to(item, external=True),
                content_type='html',
                id=get_id(u'%slektor/%s' % (
                    ctx.env.project.id,
                    item['_path'].encode('utf-8'),
                )),
                author=get_item_author(item, item_author_field),
                updated=get_item_updated(item, item_date_field))

        with artifact.open('wb') as f:
            f.write(feed.to_string().encode('utf-8') + '\n')

def do_atom(path=None):
    feed = AtomFeed('Changes' + (' - %s' % path if path != '/' else ''), feed_url=request.url, url=request.url_root)

    history = []

    if path != '/':
        for entry in get_history(path):
            entry.insert(1, path)
            history.append(entry)

            if len(history) == ATOM_LIMIT:
                break
    else:
        for path in get_documents_list():
            for entry in get_history(path):
                entry.insert(1, path)
                history.append(entry)

        history = sorted(history, key=lambda x: x[0], reverse=True)[:ATOM_LIMIT]

    for date, path, rev, author, desc in history:
        feed.add(path, desc if desc != '-' else 'No summary available',
            url=url_for('index', path=path, do='compare', to=rev),
            author=author,
            updated=date)

    return feed.get_response()

def atom(ctx):
    feed = AtomFeed(ctx.odb.name, feed_url=ctx.url_for("atom"), url=ctx.url_for("root"), subtitle=ctx.odb.description)

    pattern = ctx.app.recent_doc_pattern

    for added_date, root_path in utils.recent_files(ctx, count=10, pattern=pattern):
        blob_obj = ctx.odb.head.tree[root_path]
        assert isinstance(blob_obj, BlobObject)

        current_blob_obj = ctx.odb.head.tree[blob_obj.abs_name]

        doc = render_blob(ctx, current_blob_obj)
        url = "http://" + ctx.request.host + ctx.url_for("view_obj", rev="HEAD", path=blob_obj.root_path)
        feed.add(
            doc.title,
            doc.body,
            title_type="html",
            content_type="html",
            author=doc.author_name,
            url=url,
            updated=doc.last_modified,
            published=added_date,
        )

    return feed.get_response()

def recent_feed():
    # Create an atom feed with the latest items
    # the number of items is given by the setting ENDPOINT_RESULTS_PER_PAGE
    # Based on: http://flask.pocoo.org/snippets/10/
    feed = AtomFeed('Recent Items',
                    feed_url=request.url, url=request.url_root,
                    author={'name': 'David Castillo',
                            'email': '[email protected]',
                            'uri': 'http://github.com/davcs86'},
                    generator=('self generated', '', '0.1'))
    # query the items
    items = db_session.query(Item).order_by(Item.created_date.desc()) \
                      .limit(app.config['ENDPOINT_RESULTS_PER_PAGE']).all()
    # add them to the feed
    for item in items:
        feed.add(item.name, unicode(item.description),
                 content_type='html',
                 author=item.author.nickname,
                 url=make_external(url_for('item_detail', item_id=item.id)),
                 categories=[{'name': g.name} for g in item.categories],
                 updated=item.updated_date,
                 links=[{'href': g.locate(), 'rel': 'enclosure',
                         'type': g.mimetype} for g in item.picture.all()],
                 published=item.created_date)
    return feed.get_response()

def itemsATOM():

    ''' Returns an Atom feed of all items '''

    feed = AtomFeed(title="Imperial Catalog",
                    subtitle="A catalog of Galactice Empire items",
                    feed_url="http://localhost:8000/feed",
                    url="http://localhost:8000",
                    author="Sean Fallmann")

    categories = getAllCategories()
    for c in categories:
        for i in c.items:
            feed.add(
                category=c.name,
                title=i.name,
                id=i.id,
                content=i.description,
                content_type="html",
                author=i.user.name,
                url="http://localhost:8000/%s/%s" % (c.name, i.name),
                updated=datetime.datetime.utcnow(),
                )

    return feed

def announcement_feed():
    def bjdate(d):
        from datetime import timedelta
        return (d + timedelta(hours=8)).strftime('%Y年%m月%d日')

    type_ = request.args.get('type', '')
    typecn = type_to_cn(type_)
    exchange = request.args.get('exchange', '')
    cond = {}
    feedtitle = '邮币卡公告聚合'
    if type_:
        cond['type_'] = type_
        feedtitle += ' - {}'.format(typecn)
    if exchange:
        cond['exchange'] = exchange
        feedtitle += ' - {}'.format(exchange)

    feed = AtomFeed(feedtitle,
                    feed_url=request.url,
                    url=request.url_root)

    announcements = list(
        Announcement.query(cond,
            sort=[('updated_at', -1)], limit=20))

    for a in announcements:
        feed.add('{} {}'.format(bjdate(a.published_at), a.title.strip()),
                 '更多内容请点击标题连接',
                 content_type='text',
                 author=a.exchange,
                 url=a.url,
                 updated=a.updated_at,
                 published=a.published_at)
    return feed.get_response()

def make_rss(data):
    """ Make RSS data from provided data
    """
    # Creat RSS feed object
    feed = AtomFeed('Recent Articles',
                    feed_url=request.url, url=request.url_root)

    # Make feed list from data
    i = 1
    current_time = datetime.now()
    for item in data:
        if item['link'] == '' or item['link'] is None:
            continue
        if item['title'] == '':
            item['title'] = 'Unknow Title'
        try:
            feed.add(item['title'],
                     unicode(item['description']),
                     content_type='html',
                     url=item['link'],
                     updated=current_time
                     )
        except Exception, e:
            print (i, e, item['title'], unicode(
                item['description']), item['link'], current_time)
        i += 1

def _topic_feed(request, title, query, order_by):
    # non moderators cannot see deleted posts, so we filter them out first
    # for moderators we mark the posts up as deleted so that
    # they can be kept apart from non-deleted ones.
    if not request.user or not request.user.is_moderator:
        query = query.filter_by(is_deleted=False)
    query = query.order_by(_topic_order[order_by])
    query = query.options(eagerload('author'), eagerload('question'))
    query = query.limit(max(0, min(50, request.args.get('num', 10, type=int))))

    feed = AtomFeed(u'%s — %s' % (title, settings.WEBSITE_TITLE),
                    subtitle=settings.WEBSITE_TAGLINE,
                    feed_url=request.url,
                    url=request.url_root)

    for topic in query.all():
        title = topic.title
        if topic.is_deleted:
            title += u' ' + _(u'(deleted)')
        feed.add(title, topic.question.rendered_text, content_type='html',
                 author=topic.author.display_name,
                 url=url_for(topic, _external=True),
                 id=topic.guid, updated=topic.last_change, published=topic.date)

    return feed.get_response()