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#! /usr/bin/env python
# -*- coding: utf-8 -
import base64
import requests.exceptions
from hashlib import md5
from datetime import datetime
from sqlalchemy import desc
from werkzeug.exceptions import BadRequest
from flask import Blueprint, g, render_template, flash, \
redirect, request, url_for, Response
from flask.ext.babel import gettext
from flask.ext.login import login_required
import conf
from pyaggr3g470r import utils
from pyaggr3g470r.lib.view_utils import etag_match
from pyaggr3g470r.lib.feed_utils import construct_feed_from
from pyaggr3g470r.forms import AddFeedForm
from pyaggr3g470r.controllers import FeedController, ArticleController
feeds_bp = Blueprint('feeds', __name__, url_prefix='/feeds')
feed_bp = Blueprint('feed', __name__, url_prefix='/feed')
@feeds_bp.route('/', methods=['GET'])
@login_required
@etag_match
def feeds():
"Lists the subscribed feeds in a table."
art_contr = ArticleController(g.user.id)
return render_template('feeds.html',
feeds=FeedController(g.user.id).read(),
unread_article_count=art_contr.count_by_feed(readed=False),
article_count=art_contr.count_by_feed())
@feed_bp.route('/<int:feed_id>', methods=['GET'])
@login_required
@etag_match
def feed(feed_id=None):
"Presents detailed information about a feed."
feed = FeedController(g.user.id).get(id=feed_id)
word_size = 6
articles = ArticleController(g.user.id) \
.read(feed_id=feed_id) \
.order_by(desc("Article.date")).all()
top_words = utils.top_words(articles, n=50, size=int(word_size))
tag_cloud = utils.tag_cloud(top_words)
today = datetime.now()
try:
last_article = articles[0].date
first_article = articles[-1].date
delta = last_article - first_article
average = round(float(len(articles)) / abs(delta.days), 2)
except:
last_article = datetime.fromtimestamp(0)
first_article = datetime.fromtimestamp(0)
delta = last_article - first_article
average = 0
elapsed = today - last_article
return render_template('feed.html',
head_titles=[utils.clear_string(feed.title)],
feed=feed, tag_cloud=tag_cloud,
first_post_date=first_article,
end_post_date=last_article,
average=average, delta=delta, elapsed=elapsed)
@feed_bp.route('/delete/<feed_id>', methods=['GET'])
@login_required
def delete(feed_id=None):
feed_contr = FeedController(g.user.id)
feed = feed_contr.get(id=feed_id)
feed_contr.delete(feed_id)
flash(gettext("Feed %(feed_title)s successfully deleted.",
feed_title=feed.title), 'success')
return redirect(url_for('home'))
@feed_bp.route('/reset_errors/<int:feed_id>', methods=['GET', 'POST'])
@login_required
def reset_errors(feed_id):
feed_contr = FeedController(g.user.id)
feed = feed_contr.get(id=feed_id)
feed_contr.update({'id': feed_id}, {'error_count': 0, 'last_error': ''})
flash(gettext('Feed %(feed_title)r successfully updated.',
feed_title=feed.title), 'success')
return redirect(request.referrer or url_for('home'))
@feed_bp.route('/bookmarklet', methods=['GET'])
@login_required
def bookmarklet():
feed_contr = FeedController(g.user.id)
url = request.args.get('url', None)
if not url:
flash(gettext("Couldn't add feed: url missing."), "error")
raise BadRequest("url is missing")
feed_exists = list(feed_contr.read(__or__={'link': url, 'site_link': url}))
if feed_exists:
flash(gettext("Couldn't add feed: feed already exists."),
"warning")
return redirect(url_for('feed.form', feed_id=feed_exists[0].id))
try:
feed = construct_feed_from(url)
except requests.exceptions.ConnectionError:
flash(gettext("Impossible to connect to the address: {}.".format(url)),
"danger")
return redirect(url_for('home'))
if not feed.get('link'):
feed['enabled'] = False
flash(gettext("Couldn't find a feed url, you'll need to find a Atom or"
" RSS link manually and reactivate this feed"),
'warning')
feed = feed_contr.create(**feed)
flash(gettext('Feed was successfully created.'), 'success')
if feed.enabled and conf.CRAWLING_METHOD == "classic":
utils.fetch(g.user.id, feed.id)
flash(gettext("Downloading articles for the new feed..."), 'info')
return redirect(url_for('feed.form', feed_id=feed.id))
@feed_bp.route('/update/<action>/<int:feed_id>', methods=['GET', 'POST'])
@feeds_bp.route('/update/<action>', methods=['GET', 'POST'])
@login_required
def update(action, feed_id=None):
readed = action == 'read'
filters = {'readed__ne': readed}
if feed_id:
filters['feed_id'] = feed_id
ArticleController(g.user.id).update(filters, {'readed': readed})
flash(gettext('Feed successfully updated.'), 'success')
return redirect(request.referrer or url_for('home'))
@feed_bp.route('/create', methods=['GET'])
@feed_bp.route('/edit/<int:feed_id>', methods=['GET'])
@login_required
@etag_match
def form(feed_id=None):
action = gettext("Add a feed")
head_titles = [action]
if feed_id is None:
return render_template('edit_feed.html', action=action,
head_titles=head_titles, form=AddFeedForm())
feed = FeedController(g.user.id).get(id=feed_id)
action = gettext('Edit feed')
head_titles = [action]
if feed.title:
head_titles.append(feed.title)
return render_template('edit_feed.html', action=action,
head_titles=head_titles,
form=AddFeedForm(obj=feed), feed=feed)
@feed_bp.route('/create', methods=['POST'])
@feed_bp.route('/edit/<int:feed_id>', methods=['POST'])
@login_required
def process_form(feed_id=None):
form = AddFeedForm()
feed_contr = FeedController(g.user.id)
if not form.validate():
return render_template('edit_feed.html', form=form)
existing_feeds = list(feed_contr.read(link=form.link.data))
if existing_feeds and feed_id is None:
flash(gettext("Couldn't add feed: feed already exists."), "warning")
return redirect(url_for('feed.form', feed_id=existing_feeds[0].id))
# Edit an existing feed
feed_attr = {'title': form.title.data, 'enabled': form.enabled.data,
'link': form.link.data, 'site_link': form.site_link.data,
'filters': []}
for filter_attr in ('type', 'pattern', 'action on', 'action'):
for i, value in enumerate(
request.form.getlist(filter_attr.replace(' ', '_'))):
if i >= len(feed_attr['filters']):
feed_attr['filters'].append({})
feed_attr['filters'][i][filter_attr] = value
if feed_id is not None:
feed_contr.update({'id': feed_id}, feed_attr)
flash(gettext('Feed %(feed_title)r successfully updated.',
feed_title=feed_attr['title']), 'success')
return redirect(url_for('feed.form', feed_id=feed_id))
# Create a new feed
new_feed = FeedController(g.user.id).create(**feed_attr)
flash(gettext('Feed %(feed_title)r successfully created.',
feed_title=new_feed.title), 'success')
if conf.CRAWLING_METHOD == "classic":
utils.fetch(g.user.id, new_feed.id)
flash(gettext("Downloading articles for the new feed..."), 'info')
return redirect(url_for('feed.form', feed_id=new_feed.id))
@feed_bp.route('/icon/<int:feed_id>', methods=['GET'])
@login_required
def icon(feed_id):
icon = FeedController(None if g.user.is_admin() else g.user.id)\
.get(id=feed_id).icon
etag = md5(icon.encode('utf8')).hexdigest()
headers = {'Cache-Control': 'max-age=86400', 'etag': etag}
if request.headers.get('if-none-match') == etag:
return Response(status=304, headers=headers)
if '\n' in icon:
content_type, *_, icon = icon.split()
headers['content-type'] = content_type
else:
headers['content-type'] = 'application/image'
return Response(base64.b64decode(icon), headers=headers)
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