aboutsummaryrefslogtreecommitdiff
path: root/src/web/views/views.py
blob: 84d1eacb75a7fa1e6ea758bf7779dd469d321309 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
#! /usr/bin/env python
# -*- coding: utf-8 -*-

# jarr - A Web based news aggregator.
# Copyright (C) 2010-2015  Cédric Bonhomme - https://www.JARR-aggregator.org
#
# For more information : https://github.com/JARR-aggregator/JARR
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

__author__ = "Cedric Bonhomme"
__version__ = "$Revision: 5.3 $"
__date__ = "$Date: 2010/01/29 $"
__revision__ = "$Date: 2014/08/27 $"
__copyright__ = "Copyright (c) Cedric Bonhomme"
__license__ = "AGPLv3"

import os
import logging
import datetime
from collections import OrderedDict

from bootstrap import application as app, db
from flask import render_template, request, flash, session, \
                  url_for, redirect, g, current_app, make_response
from flask.ext.login import LoginManager, login_user, logout_user, \
                            login_required, current_user, AnonymousUserMixin
from flask.ext.principal import Principal, Identity, AnonymousIdentity, \
                                identity_changed, identity_loaded, Permission,\
                                RoleNeed, UserNeed
from flask.ext.babel import gettext
from sqlalchemy.exc import IntegrityError
from werkzeug import generate_password_hash

import conf
from web.lib.utils import redirect_url
from web import utils, notifications, export
from web.lib.view_utils import etag_match
from web.models import User, Feed, Article, Role
from web.forms import SignupForm, SigninForm

from web.controllers import UserController, FeedController, \
                            ArticleController, CategoryController


Principal(app)
# Create a permission with a single Need, in this case a RoleNeed.
admin_permission = Permission(RoleNeed('admin'))

login_manager = LoginManager()
login_manager.init_app(app)
login_manager.login_message = gettext('Authentication required.')
login_manager.login_message_category = "info"
login_manager.login_view = 'login'

logger = logging.getLogger(__name__)


#
# Management of the user's session.
#
@identity_loaded.connect_via(app)
def on_identity_loaded(sender, identity):
    # Set the identity user object
    identity.user = current_user

    # Add the UserNeed to the identity
    if hasattr(current_user, 'id'):
        identity.provides.add(UserNeed(current_user.id))

    # Assuming the User model has a list of roles, update the
    # identity with the roles that the user provides
    if hasattr(current_user, 'roles'):
        for role in current_user.roles:
            identity.provides.add(RoleNeed(role.name))


@app.before_request
def before_request():
    g.user = current_user
    if g.user.is_authenticated:
        g.user.last_seen = datetime.datetime.utcnow()
        db.session.add(g.user)
        db.session.commit()


@login_manager.user_loader
def load_user(id):
    # Return an instance of the User model
    return UserController().get(id=id)


#
# Custom error pages.
#
@app.errorhandler(401)
def authentication_required(e):
    flash(gettext('Authentication required.'), 'info')
    return redirect(url_for('login'))


@app.errorhandler(403)
def authentication_failed(e):
    flash(gettext('Forbidden.'), 'danger')
    return redirect(url_for('login'))


@app.errorhandler(404)
def page_not_found(e):
    return render_template('errors/404.html'), 404


@app.errorhandler(500)
def internal_server_error(e):
    return render_template('errors/500.html'), 500


@g.babel.localeselector
def get_locale():
    """
    Called before each request to give us a chance to choose
    the language to use when producing its response.
    """
    return request.accept_languages.best_match(conf.LANGUAGES.keys())


@g.babel.timezoneselector
def get_timezone():
    try:
        return conf.TIME_ZONE[get_locale()]
    except:
        return conf.TIME_ZONE["en"]


#
# Views.
#
@app.route('/login', methods=['GET', 'POST'])
def login():
    """
    Log in view.
    """
    if g.user is not None and g.user.is_authenticated:
        return redirect(url_for('home'))
    g.user = AnonymousUserMixin()
    form = SigninForm()
    if form.validate_on_submit():
        user = UserController().get(email=form.email.data)
        login_user(user)
        g.user = user
        session['email'] = form.email.data
        identity_changed.send(current_app._get_current_object(),
                              identity=Identity(user.id))
        return form.redirect('home')
    return render_template('login.html', form=form)


@app.route('/logout')
@login_required
def logout():
    """
    Log out view. Removes the user information from the session.
    """
    session.pop('email', None)

    # Remove the user information from the session
    logout_user()

    # Remove session keys set by Flask-Principal
    for key in ('identity.name', 'identity.auth_type'):
        session.pop(key, None)

    # Tell Flask-Principal the user is anonymous
    identity_changed.send(current_app._get_current_object(),
                          identity=AnonymousIdentity())

    flash(gettext("Logged out successfully."), 'success')
    return redirect(url_for('login'))


@app.route('/signup', methods=['GET', 'POST'])
def signup():
    """
    Signup page.
    """
    if int(os.environ.get("SELF_REGISTRATION", 0)) != 1:
        flash(gettext("Self-registration is disabled."), 'warning')
        return redirect(url_for('home'))
    if g.user is not None and g.user.is_authenticated:
        return redirect(url_for('home'))

    form = SignupForm()

    if form.validate_on_submit():
        role_user = Role.query.filter(Role.name == "user").first()
        user = User(nickname=form.nickname.data,
                    email=form.email.data,
                    pwdhash=generate_password_hash(form.password.data))
        user.roles = [role_user]
        db.session.add(user)
        try:
            db.session.commit()
        except IntegrityError:
            flash(gettext('Email already used.'), 'warning')
            return render_template('signup.html', form=form)

        # Send the confirmation email
        try:
            notifications.new_account_notification(user)
        except Exception as error:
            flash(gettext('Problem while sending activation email: %(error)s',
                          error=error), 'danger')
            return redirect(url_for('home'))

        flash(gettext('Your account has been created. '
                      'Check your mail to confirm it.'), 'success')
        return redirect(url_for('home'))

    return render_template('signup.html', form=form)


from flask import jsonify


@app.route('/home2')
@login_required
def new_home():
    return render_template('home2.html')


@app.route('/menu')
@login_required
def get_menu():
    categories = {c.id: c.dump() for c in CategoryController(g.user.id).read()}
    categories[0] = {'name': 'No category', 'id': 0}
    unread = ArticleController(g.user.id).count_by_feed(readed=False)
    for cat_id in categories:
        categories[cat_id]['unread'] = 0
        categories[cat_id]['feeds'] = []
    feeds = {feed.id: feed.dump() for feed in FeedController(g.user.id).read()}
    for feed_id, feed in feeds.items():
        feed['category_id'] = feed['category_id'] or 0
        feed['unread'] = unread.get(feed['id'], 0)
        if feed.get('icon_url'):
            feed['icon_url'] = url_for('icon.icon', url=feed['icon_url'])
        categories[feed['category_id']]['unread'] += feed['unread']
        categories[feed['category_id']]['feeds'].append(feed_id)
    return jsonify(**{'feeds': feeds, 'categories': categories,
                      'all_unread_count': sum(unread.values())})


def _get_filters(in_dict):
    filters = {}
    query = in_dict.get('query')
    if query:
        search_title = in_dict.get('search_title') == 'true'
        search_content = in_dict.get('search_content') == 'true'
        if search_title:
            filters['title__ilike'] = "%%%s%%" % query
        if search_content:
            filters['content__ilike'] = "%%%s%%" % query
        if len(filters) == 0:
            filters['title__ilike'] = "%%%s%%" % query
        if len(filters) > 1:
            filters = {"__or__": filters}
    if in_dict.get('filter') == 'unread':
        filters['readed'] = False
    elif in_dict.get('filter') == 'liked':
        filters['like'] = True
    filter_type = in_dict.get('filter_type')
    if filter_type in {'feed_id', 'category_id'} and in_dict.get('filter_id'):
        filters[filter_type] = int(in_dict['filter_id']) or None
    return filters


def _articles_to_json(articles, fd_hash=None):
    return jsonify(**{'articles': [{'title': art.title, 'liked': art.like,
            'read': art.readed, 'article_id': art.id,
            'feed_id': art.feed_id, 'category_id': art.category_id or 0,
            'feed_title': fd_hash[art.feed_id]['title'] if fd_hash else None,
            'icon_url': fd_hash[art.feed_id]['icon_url'] if fd_hash else None,
            'date': art.date} for art in articles.limit(1000)]})


@app.route('/middle_panel')
@login_required
def get_middle_panel():
    filters = _get_filters(request.args)
    art_contr = ArticleController(g.user.id)
    fd_hash = {feed.id: {'title': feed.title,
                         'icon_url': url_for('icon.icon', url=feed.icon_url)
                                     if feed.icon_url else None}
               for feed in FeedController(g.user.id).read()}
    articles = art_contr.read(**filters).order_by(Article.date.desc())
    return _articles_to_json(articles, fd_hash)


@app.route('/mark_all_as_read', methods=['PUT'])
@login_required
def mark_all_as_read():
    filters, acontr = _get_filters(request.json), ArticleController(g.user.id)
    articles = _articles_to_json(acontr.read(**filters))
    acontr.update(filters, {'readed': True})
    return articles


@etag_match
def render_home(filters=None, head_titles=None,
                page_to_render='home', **kwargs):
    if filters is None:
        filters = {}
    if head_titles is None:
        head_titles = []
    feed_contr = FeedController(g.user.id)
    arti_contr = ArticleController(g.user.id)
    feeds = {feed.id: feed.title for feed in feed_contr.read()}

    in_error = {feed.id: feed.error_count for feed in
                feed_contr.read(error_count__gt=2)}

    filter_ = request.args.get('filter_',
                               'unread' if page_to_render == 'home' else 'all')
    sort_ = request.args.get('sort_', 'date')
    feed_id = int(request.args.get('feed_id', 0))
    limit = request.args.get('limit', 1000)

    if filter_ != 'all':
        filters['readed'] = filter_ == 'read'
    if feed_id:
        filters['feed_id'] = feed_id
        head_titles.append(feed_contr.get(id=feed_id).title)

    sort_param = {"feed": Feed.title.desc(),
                  "date": Article.date.desc(),
                  "article": Article.title.desc(),
                  "-feed": Feed.title.asc(),
                  "-date": Article.date.asc(),
                  "-article": Article.title.asc()
                  }.get(sort_, Article.date.desc())

    articles = arti_contr.read(**filters).join(Article.source). \
                                            order_by(sort_param)
    if limit != 'all':
        limit = int(limit)
        articles = articles.limit(limit)

    def gen_url(filter_=filter_, sort_=sort_, limit=limit, feed_id=feed_id,
                **kwargs):
        o_kwargs = OrderedDict()
        for key in sorted(kwargs):
            o_kwargs[key] = kwargs[key]
        if page_to_render == 'search':
            o_kwargs['query'] = request.args.get('query', '')
            o_kwargs['search_title'] = request.args.get('search_title', 'off')
            o_kwargs['search_content'] = request.args.get(
                    'search_content', 'off')
            # if nor title and content are selected, selecting title
            if o_kwargs['search_title'] == o_kwargs['search_content'] == 'off':
                o_kwargs['search_title'] = 'on'
        o_kwargs['filter_'] = filter_
        o_kwargs['sort_'] = sort_
        o_kwargs['limit'] = limit
        o_kwargs['feed_id'] = feed_id
        return url_for(page_to_render, **o_kwargs)

    articles = list(articles)
    if (page_to_render == 'home' and feed_id or page_to_render == 'search') \
            and filter_ != 'all' and not articles:
        return redirect(gen_url(filter_='all'))

    return render_template('home.html', gen_url=gen_url,
                           feed_id=feed_id, page_to_render=page_to_render,
                           filter_=filter_, limit=limit, feeds=feeds,
                           unread=arti_contr.count_by_feed(readed=False),
                           articles=articles, in_error=in_error,
                           head_titles=head_titles, sort_=sort_, **kwargs)


@app.route('/')
@login_required
def home():
    "Home page for connected users. Displays by default unread articles."
    return render_home()


@app.route('/favorites')
@login_required
def favorites():
    return render_home({'like': True}, [gettext('Favorites')], 'favorites')


@app.route('/search', methods=['GET'])
@login_required
def search():
    "Search articles corresponding to the query."
    if 'query' not in request.args:
        flash(gettext("No text to search were provided."), "warning")
        return render_home()
    query = request.args['query']
    filters = {}
    search_title = request.args.get('search_title', 'off')
    search_content = request.args.get('search_content', 'off')
    if search_title == 'on':
        filters['title__ilike'] = "%%%s%%" % query
    if search_content == 'on':
        filters['content__ilike'] = "%%%s%%" % query
    if len(filters) == 0:
        search_title = 'on'
        filters['title__ilike'] = "%%%s%%" % query
    if len(filters) > 1:
        filters = {"__or__": filters}
    return render_home(filters, ["%s %s" % (gettext('Search:'), query)],
                       'search', search_query=query, search_title=search_title,
                       search_content=search_content)


@app.route('/fetch', methods=['GET'])
@app.route('/fetch/<int:feed_id>', methods=['GET'])
@login_required
def fetch(feed_id=None):
    """
    Triggers the download of news.
    News are downloaded in a separated process, mandatory for Heroku.
    """
    if conf.CRAWLING_METHOD == "classic" \
            and (not conf.ON_HEROKU or g.user.is_admin()):
        utils.fetch(g.user.id, feed_id)
        flash(gettext("Downloading articles..."), "info")
    else:
        flash(gettext("The manual retrieving of news is only available " +
                      "for administrator, on the Heroku platform."), "info")
    return redirect(redirect_url())


@app.route('/about', methods=['GET'])
@etag_match
def about():
    """
    'About' page.
    """
    return render_template('about.html')


@app.route('/export', methods=['GET'])
@login_required
def export_articles():
    """
    Export all articles to HTML or JSON.
    """
    user = UserController(g.user.id).get(id=g.user.id)
    if request.args.get('format') == "HTML":
        # Export to HTML
        try:
            archive_file, archive_file_name = export.export_html(user)
        except:
            flash(gettext("Error when exporting articles."), 'danger')
            return redirect(redirect_url())
        response = make_response(archive_file)
        response.headers['Content-Type'] = 'application/x-compressed'
        response.headers['Content-Disposition'] = 'attachment; filename=%s' \
                % archive_file_name
    elif request.args.get('format') == "JSON":
        # Export to JSON
        try:
            json_result = export.export_json(user)
        except:
            flash(gettext("Error when exporting articles."), 'danger')
            return redirect(redirect_url())
        response = make_response(json_result)
        response.mimetype = 'application/json'
        response.headers["Content-Disposition"] \
                = 'attachment; filename=account.json'
    else:
        flash(gettext('Export format not supported.'), 'warning')
        return redirect(redirect_url())
    return response


@app.route('/export_opml', methods=['GET'])
@login_required
def export_opml():
    """
    Export all feeds to OPML.
    """
    user = UserController(g.user.id).get(id=g.user.id)
    response = make_response(render_template('opml.xml', user=user,
                                             now=datetime.datetime.now()))
    response.headers['Content-Type'] = 'application/xml'
    response.headers['Content-Disposition'] = 'attachment; filename=feeds.opml'
    return response
bgstack15