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import logging
from datetime import datetime, timedelta
import requests.exceptions
from flask import (
Blueprint,
flash,
make_response,
redirect,
render_template,
request,
url_for
)
from flask_babel import gettext
from flask_login import current_user, login_required
from flask_paginate import Pagination, get_page_args
from werkzeug.exceptions import BadRequest
from newspipe.bootstrap import application
from newspipe.controllers import (
ArticleController,
CategoryController,
FeedController,
UserController
)
from newspipe.lib import misc_utils, utils
from newspipe.lib.feed_utils import construct_feed_from
from newspipe.web.forms import AddFeedForm
from newspipe.web.lib.view_utils import etag_match
logger = logging.getLogger(__name__)
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(current_user.id)
return render_template(
"feeds.html",
feeds=FeedController(current_user.id).read().order_by("title"),
unread_article_count=art_contr.count_by_feed(readed=False),
article_count=art_contr.count_by_feed(),
)
def feed_view(feed_id=None, user_id=None):
feed = FeedController(user_id).get(id=feed_id)
category = None
if feed.category_id:
category = CategoryController(user_id).get(id=feed.category_id)
filters = {}
filters["feed_id"] = feed_id
articles = ArticleController(user_id).read_light(**filters)
# Server-side pagination
page, per_page, offset = get_page_args(per_page_parameter="per_page")
pagination = Pagination(
page=page,
total=articles.count(),
css_framework="bootstrap3",
search=False,
record_name="articles",
per_page=per_page,
)
today = datetime.now()
try:
last_article = articles[0].date
first_article = articles[-1].date
delta = last_article - first_article
average = round(float(articles.count()) / abs(delta.days), 2)
except Exception:
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,
category=category,
articles=articles.offset(offset).limit(per_page),
pagination=pagination,
first_post_date=first_article,
end_post_date=last_article,
average=average,
delta=delta,
elapsed=elapsed,
)
@feed_bp.route("/<int:feed_id>", methods=["GET"])
@login_required
@etag_match
def feed(feed_id=None):
"Presents detailed information about a feed."
return feed_view(feed_id, current_user.id)
@feed_bp.route("/public/<int:feed_id>", methods=["GET"])
@etag_match
def feed_pub(feed_id=None):
"""
Presents details of a pubic feed if the profile of the owner is also
public.
"""
feed = FeedController(None).get(id=feed_id)
if feed.private or not feed.user.is_public_profile:
return render_template("errors/404.html"), 404
return feed_view(feed_id, None)
@feed_bp.route("/delete/<feed_id>", methods=["GET"])
@login_required
def delete(feed_id=None):
feed_contr = FeedController(current_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(current_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", "POST"])
@login_required
def bookmarklet():
feed_contr = FeedController(current_user.id)
url = (request.args if request.method == "GET" else request.form).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"))
except Exception:
logger.exception("something bad happened when fetching %r", url)
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 application.config["CRAWLING_METHOD"] == "default":
misc_utils.fetch(current_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}
nb_days = request.args.get("nb_days", 0, type=int)
if nb_days != 0:
filters["date__lt"] = datetime.now() - timedelta(days=nb_days)
if feed_id:
filters["feed_id"] = feed_id
ArticleController(current_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")
categories = CategoryController(current_user.id).read()
head_titles = [action]
if feed_id is None:
form = AddFeedForm()
form.set_category_choices(categories)
return render_template(
"edit_feed.html", action=action, head_titles=head_titles, form=form
)
feed = FeedController(current_user.id).get(id=feed_id)
form = AddFeedForm(obj=feed)
form.set_category_choices(categories)
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,
categories=categories,
form=form,
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(current_user.id)
form.set_category_choices(CategoryController(current_user.id).read())
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": [],
"category_id": form.category_id.data,
"private": form.private.data,
}
if not feed_attr["category_id"] or feed_attr["category_id"] == "0":
del feed_attr["category_id"]
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 = feed_contr.create(**feed_attr)
flash(
gettext("Feed %(feed_title)r successfully created.", feed_title=new_feed.title),
"success",
)
if application.config["CRAWLING_METHOD"] == "default":
misc_utils.fetch(current_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))
@feeds_bp.route("/inactives", methods=["GET"])
@login_required
def inactives():
"""
List of inactive feeds.
"""
nb_days = int(request.args.get("nb_days", 365))
inactives = FeedController(current_user.id).get_inactives(nb_days)
return render_template("inactives.html", inactives=inactives, nb_days=nb_days)
@feed_bp.route("/duplicates/<int:feed_id>", methods=["GET"])
@login_required
def duplicates(feed_id):
"""
Return duplicates article for a feed.
"""
feed, duplicates = FeedController(current_user.id).get_duplicates(feed_id)
if len(duplicates) == 0:
flash(gettext('No duplicates in the feed "{}".').format(feed.title), "info")
return redirect(url_for("home"))
return render_template("duplicates.html", duplicates=duplicates, feed=feed)
@feeds_bp.route("/export", methods=["GET"])
@login_required
def export():
"""
Export feeds to OPML.
"""
include_disabled = request.args.get("includedisabled", "") == "on"
include_private = request.args.get("includeprivate", "") == "on"
include_exceeded_error_count = (
request.args.get("includeexceedederrorcount", "") == "on"
)
filter = {}
if not include_disabled:
filter["enabled"] = True
if not include_private:
filter["private"] = False
if not include_exceeded_error_count:
filter["error_count__lt"] = application.config["DEFAULT_MAX_ERROR"]
user = UserController(current_user.id).get(id=current_user.id)
feeds = FeedController(current_user.id).read(**filter)
categories = {cat.id: cat.dump() for cat in CategoryController(user.id).read()}
response = make_response(
render_template(
"opml.xml",
user=user,
feeds=feeds,
categories=categories,
now=datetime.now(),
)
)
response.headers["Content-Type"] = "application/xml"
response.headers["Content-Disposition"] = "attachment; filename=feeds.opml"
return response
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