aboutsummaryrefslogtreecommitdiff
path: root/source/pyAggr3g470r.py
blob: fe36e32fbf89c5e7a86fded1bc9b595168259775 (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
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
#! /usr/bin/env python
#-*- coding: utf-8 -*-

# pyAggr3g470r - A Web based news aggregator.
# Copyright (C) 2010-2012  Cédric Bonhomme - http://cedricbonhomme.org/
#
# For more information : http://bitbucket.org/cedricbonhomme/pyaggr3g470r/
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>

__author__ = "Cedric Bonhomme"
__version__ = "$Revision: 3.3 $"
__date__ = "$Date: 2010/01/29 $"
__revision__ = "$Date: 2012/04/16 $"
__copyright__ = "Copyright (c) Cedric Bonhomme"
__license__ = "GPLv3"

#
# This file contains the "Root" class which describes
# all pages of pyAggr3g470r. These pages are:
# - main page;
# - management;
# - history;
# - favorites;
# - notifications;
# - unread;
# - feed summary.
#

import os
import re
import cherrypy
import calendar

from collections import Counter
import datetime

import conf
import utils
import export
import mongodb
import feedgetter
from qrcode.pyqrnative.PyQRNative import QRCode, QRErrorCorrectLevel, CodeOverflowException
from qrcode import qr


def error_page_404(status, message, traceback, version):
    """
    Display an error if the page does not exist.
    """
    html = htmlheader()
    html += htmlnav
    html += "<br /><br />Error %s - This page does not exist." % status
    html += "\n<hr />\n" + htmlfooter
    return html

def handle_error():
    """
    Handle different type of errors.
    """
    html = htmlheader()
    html += htmlnav
    html += "<br /><br />Sorry, an error occured"
    html += "\n<hr />\n" + htmlfooter
    cherrypy.response.status = 500
    cherrypy.response.body = [html]

def htmlheader(nb_unread_articles=""):
    """
    Return the header of the HTML page with the number of unread articles
    in the 'title' HTML tag..
    """
    return '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">\n' + \
        '<head>' + \
        '\n\t<title>'+ nb_unread_articles +'pyAggr3g470r - News aggregator</title>\n' + \
        '\t<link rel="stylesheet" type="text/css" href="/css/style.css" />' + \
        '\n\t<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>\n' + \
        '\n\t<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>\n' + \
        '</head>\n'

htmlfooter = '<p>This software is under GPLv3 license. You are welcome to copy, modify or' + \
            ' redistribute the source code according to the' + \
            ' <a href="http://www.gnu.org/licenses/gpl-3.0.txt">GPLv3</a> license.</p></div>\n' + \
            '</body>\n</html>'

htmlnav = '<body>\n<h1><div class="right innerlogo"><a href="/"><img src="/img/tuxrss.png"' + \
        """ title="What's new today?"/></a>""" + \
        '</div><a name="top"><a href="/">pyAggr3g470r - News aggregator</a></a></h1>\n<a' + \
        ' href="http://bitbucket.org/cedricbonhomme/pyaggr3g470r/" rel="noreferrer" target="_blank">' + \
        'pyAggr3g470r (source code)</a>'


class Root:
    """
    Root class.
    All pages of pyAggr3g470r are described in this class.
    """
    def __init__(self):
        """
        """
        self.mongo = mongodb.Articles(conf.MONGODB_ADDRESS, conf.MONGODB_PORT)

    def index(self):
        """
        Main page containing the list of feeds and articles.
        """
        feeds = self.mongo.get_all_feeds()
        nb_unread_articles = self.mongo.nb_unread_articles()
        nb_favorites = self.mongo.nb_favorites()
        nb_mail_notifications = self.mongo.nb_mail_notifications()

        # if there are unread articles, display the number in the tab of the browser
        html = htmlheader((nb_unread_articles and \
                            ['(' + str(nb_unread_articles) +') '] or \
                            [""])[0])
        html += htmlnav
        html += self.create_right_menu()
        html += """<div class="left inner">\n"""

        if feeds:
            html += '<a href="/management/"><img src="/img/management.png" title="Management" /></a>\n'
            html += '<a href="/history/"><img src="/img/history.png" title="History" /></a>\n'
            html += '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\n'

            html += """<a href="/favorites/"><img src="/img/heart-32x32.png" title="Your favorites (%s)" /></a>\n""" % \
                (nb_favorites,)

            html += """<a href="/notifications/"><img src="/img/email-follow.png" title="Active e-mail notifications (%s)" /></a>\n""" % \
                (nb_mail_notifications,)

            html += '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
            if nb_unread_articles != 0:
                html += '<a href="/mark_as_read/"><img src="/img/mark-as-read.png" title="Mark articles as read" /></a>\n'
                html += """<a href="/unread/"><img src="/img/unread.png" title="Unread article(s): %s" /></a>\n""" % \
                    (nb_unread_articles,)
        html += '<a accesskey="F" href="/fetch/"><img src="/img/check-news.png" title="Check for news" /></a>\n'


        # The main page display all the feeds.
        for feed in feeds:
            html += """<h2><a name="%s"><a href="%s" rel="noreferrer"
                    target="_blank">%s</a></a>
                    <a href="%s" rel="noreferrer"
                    target="_blank"><img src="%s" width="28" height="28" /></a></h2>\n""" % \
                        (feed["feed_id"], feed["feed_link"], feed["feed_title"], \
                        feed["feed_link"], feed["feed_image"])

            # The main page display only 10 articles by feeds.
            for article in self.mongo.get_articles_from_collection(feed["feed_id"])[:10]:
                if article["article_readed"] == False:
                    # not readed articles are in bold
                    not_read_begin, not_read_end = "<b>", "</b>"
                else:
                    not_read_begin, not_read_end = "", ""

                # display a heart for faved articles
                if article["article_like"] == True:
                    like = """ <img src="/img/heart.png" title="I like this article!" />"""
                else:
                    like = ""

                # Descrition for the CSS ToolTips
                article_content = utils.clear_string(article["article_content"])
                if article_content:
                    description = " ".join(article_content.split(' ')[:55])
                else:
                    description = "No description."
                # Title of the article
                article_title = article["article_title"]
                if len(article_title) >= 110:
                    article_title = article_title[:110] + " ..."

                # a description line per article (date, title of the article and
                # CSS description tooltips on mouse over)
                html += article["article_date"].ctime() + " - " + \
                        """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s%s%s<span class="classic">%s</span></a>""" % \
                                (feed["feed_id"], article["article_id"], not_read_begin, \
                                article_title, not_read_end, description) + like + "<br />\n"
            html += "<br />\n"

            # some options for the current feed
            html += """<a href="/articles/%s">All articles</a>&nbsp;&nbsp;&nbsp;""" % (feed["feed_id"],)
            html += """<a href="/feed/%s">Feed summary</a>&nbsp;&nbsp;&nbsp;""" % (feed["feed_id"],)
            if self.mongo.nb_unread_articles(feed["feed_id"]) != 0:
                html += """&nbsp;&nbsp;<a href="/mark_as_read/Feed_FromMainPage:%s">Mark all as read</a>""" % (feed["feed_id"],)
                html += """&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/unread/%s" title="Unread article(s)">Unread article(s) (%s)</a>""" % (feed["feed_id"], self.mongo.nb_unread_articles(feed["feed_id"]))
            if feed["mail"] == "0":
                html += """<br />\n<a href="/mail_notification/1:%s" title="By e-mail">Stay tuned</a>""" % (feed["feed_id"],)
            else:
                html += """<br />\n<a href="/mail_notification/0:%s" title="By e-mail">Stop staying tuned</a>""" %  (feed["feed_id"],)
            html += """<h4><a href="/#top">Top</a></h4>"""
            html += "<hr />\n"
        html += htmlfooter
        return html

    index.exposed = True


    def create_right_menu(self):
        """
        Create the right menu.
        """
        html = """<div class="right inner">\n"""
        html += """<form method=get action="/search/"><input type="search" name="query" value="" placeholder="Search articles" maxlength=2048 autocomplete="on"></form>\n"""
        html += "<hr />\n"
        # insert the list of feeds in the menu
        html += self.create_list_of_feeds()
        html += "</div>\n"

        return html

    def create_list_of_feeds(self):
        """
        Create the list of feeds.
        """
        feeds = self.mongo.get_all_feeds()
        html = """<div class="nav_container">Your feeds (%s):<br />\n""" % len(feeds)
        for feed in feeds:
            if self.mongo.nb_unread_articles(feed["feed_id"]) != 0:
                # not readed articles are in bold
                not_read_begin, not_read_end = "<b>", "</b>"
            else:
                not_read_begin, not_read_end = "", ""
            html += """<div><a href="/#%s">%s</a> (<a href="/unread/%s" title="Unread article(s)">%s%s%s</a> / %s)</div>""" % \
                            (feed["feed_id"], feed["feed_title"], feed["feed_id"], not_read_begin, \
                            self.mongo.nb_unread_articles(feed["feed_id"]), not_read_end, self.mongo.nb_articles(feed["feed_id"]))
        return html + "</div>"


    def management(self):
        """
        Management page.
        Allows adding and deleting feeds. Export functions of the MongoDB data base
        and display some statistics.
        """
        feeds = self.mongo.get_all_feeds()
        nb_mail_notifications = self.mongo.nb_mail_notifications()
        nb_favorites = self.mongo.nb_favorites()
        nb_articles = self.mongo.nb_articles()
        nb_unread_articles = self.mongo.nb_unread_articles()
        
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">\n"""
        html += "<h1>Add Feeds</h1>\n"
        # Form: add a feed
        html += """<form method=get action="/add_feed/"><input type="url" name="url" placeholder="URL of a site" maxlength=2048 autocomplete="off">\n<input type="submit" value="OK"></form>\n"""

        if feeds:
            # Form: delete a feed
            html += "<h1>Delete Feeds</h1>\n"
            html += """<form method=get action="/remove_feed/"><select name="feed_id">\n"""
            for feed in feeds:
                html += """\t<option value="%s">%s</option>\n""" % (feed["feed_id"], feed["feed_title"])
            html += """</select><input type="submit" value="OK"></form>\n"""

            html += """<p>Active e-mail notifications: <a href="/notifications/">%s</a></p>\n""" % \
                        (nb_mail_notifications,)
            html += """<p>You like <a href="/favorites/">%s</a> article(s).</p>\n""" % \
                        (nb_favorites, )

        html += "<hr />\n"

        # Informations about the data base of articles
        html += """<p>%s article(s) are loaded from the database with
                <a href="/unread/">%s unread article(s)</a>.<br />\n""" % \
                    (nb_articles, nb_unread_articles)
        #html += """Database: %s.\n<br />Size: %s bytes.<br />\n""" % \
                    #(os.path.abspath(utils.sqlite_base), os.path.getsize(utils.sqlite_base))
        html += '<a href="/statistics/">Advanced statistics.</a></p>\n'

        html += """<form method=get action="/fetch/">\n<input type="submit" value="Fetch all feeds"></form>\n"""
        html += """<form method=get action="/drop_base">\n<input type="submit" value="Delete all articles"></form>\n"""

        # Export functions
        html += "<h1>Export articles</h1>\n\n"
        html += """<form method=get action="/export/"><select name="export_method">\n"""
        html += """\t<option value="export_html" selected='selected'>HTML (simple Webzine)</option>\n"""
        html += """\t<option value="export_epub">ePub</option>\n"""
        html += """\t<option value="export_pdf">PDF</option>\n"""
        html += """\t<option value="export_txt">Text</option>\n"""
        html += """</select>\n\t<input type="submit" value="Export">\n</form>\n"""
        html += "<hr />"
        html += htmlfooter
        return html

    management.exposed = True


    def statistics(self, word_size=6):
        """
        More advanced statistics.
        """
        articles = self.mongo.get_all_articles()
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">\n"""

        # Some statistics (most frequent word)
        if articles:
            top_words = utils.top_words(articles, n=50, size=int(word_size))
            html += "<h1>Statistics</h1>\n<br />\n"
            # Tags cloud
            html += 'Minimum size of a word:'
            html += '<form method=get action="/statistics/">'
            html += """<input type="number" name="word_size" value="%s" min="2" max="15" step="1" size="2">""" % (word_size)
            html += '<input type="submit" value="OK"></form>\n'
            html += '<br /><h3>Tag cloud</h3>\n'
            html += '<div style="width: 35%; overflow:hidden; text-align: justify">' + \
                        utils.tag_cloud(top_words) + '</div>'
            html += "<hr />\n"

        html += htmlfooter
        return html

    statistics.exposed = True


    def search(self, query=None):
        """
        Simply search for the string 'query'
        in the description of the article.
        """
        param, _, value = query.partition(':')
        wordre = re.compile(r'\b%s\b' % param, re.I)
        feed_id = None
        if param == "Feed":
            feed_id, _, query = value.partition(':')
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        html += """<h1>Articles containing the string <i>%s</i></h1><br />""" % (query,)

        if feed_id is not None:
            for article in self.mongo.get_articles_from_collection(feed_id):
                article_content = utils.clear_string(article.article_description)
                if not article_content:
                    utils.clear_string(article.article_title)
                if wordre.findall(article_content) != []:
                    if article.article_readed == "0":
                        # not readed articles are in bold
                        not_read_begin, not_read_end = "<b>", "</b>"
                    else:
                        not_read_begin, not_read_end = "", ""

                    html += article.article_date + " - " + not_read_begin + \
                            """<a href="/article/%s:%s" rel="noreferrer" target="_blank">%s</a>""" % \
                                    (feed_id, article.article_id, article.article_title) + \
                            not_read_end + """<br />\n"""
        else:
            feeds = self.mongo.get_all_feeds()
            for feed in feeds:
                new_feed_section = True
                for article in self.mongo.get_articles_from_collection(feed["feed_id"]):
                    article_content = utils.clear_string(article["article_content"])
                    if not article_content:
                        utils.clear_string(article["article_title"])
                    if wordre.findall(article_content) != []:
                        if new_feed_section is True:
                            new_feed_section = False
                            html += """<h2><a href="/articles/%s" rel="noreferrer" target="_blank">%s</a><a href="%s" rel="noreferrer" target="_blank"><img src="%s" width="28" height="28" /></a></h2>\n""" % \
                                (feed["feed_id"], feed["feed_title"], feed["feed_link"], feed["feed_image"])

                        if article["article_readed"] == False:
                            # not readed articles are in bold
                            not_read_begin, not_read_end = "<b>", "</b>"
                        else:
                            not_read_begin, not_read_end = "", ""

                        # display a heart for faved articles
                        if article["article_like"] == True:
                            like = """ <img src="/img/heart.png" title="I like this article!" />"""
                        else:
                            like = ""

                        # descrition for the CSS ToolTips
                        article_content = utils.clear_string(article["article_content"])
                        if article_content:
                            description = " ".join(article_content[:500].split(' ')[:-1])
                        else:
                            description = "No description."

                        # a description line per article (date, title of the article and
                        # CSS description tooltips on mouse over)
                        html += article["article_date"].ctime() + " - " + \
                                """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s%s%s<span class="classic">%s</span></a>""" % \
                                        (feed["feed_id"], article["article_id"], not_read_begin, \
                                        article["article_title"][:150], not_read_end, description) + like + "<br />\n"
        html += "<hr />"
        html += htmlfooter
        return html

    search.exposed = True


    def fetch(self):
        """
        Fetch all feeds.
        """
        feed_getter = feedgetter.FeedGetter()
        feed_getter.retrieve_feed()
        return self.index()

    fetch.exposed = True


    def article(self, param):
        """
        Display the article in parameter in a new Web page.
        """
        try:
            feed_id, article_id = param.split(':')
            feed = self.mongo.get_feed(feed_id)
            articles = self.mongo.get_articles_from_collection(feed_id)
            article = self.mongo.get_article(feed_id, article_id)
        except:
            return self.error_page("Bad URL. This article do not exists.")
        html = htmlheader()
        html += htmlnav
        html += """<div>"""

        if article["article_readed"] == False:
            # if the current article is not yet readed, update the database
            self.mark_as_read("Article:"+article["article_id"]+":"+feed["feed_id"])

        html += '\n<div style="width: 50%; overflow:hidden; text-align: justify; margin:0 auto">\n'
        # Title of the article
        html += """<h1><i>%s</i> from <a href="/feed/%s">%s</a></h1>\n<br />\n""" % \
                        (article["article_title"], feed_id, feed["feed_title"])
        if article["article_like"] == True:
            html += """<a href="/like/0:%s:%s"><img src="/img/heart.png" title="I like this article!" /></a>""" % \
                        (feed_id, article["article_id"])
        else:
            html += """<a href="/like/1:%s:%s"><img src="/img/heart_open.png" title="Click if you like this article." /></a>""" % \
                        (feed_id, article["article_id"])
        html += """&nbsp;&nbsp;<a href="/delete_article/%s:%s"><img src="/img/cross.png" title="Delete this article" /></a>""" % \
                        (feed_id, article["article_id"])
        html += "<br /><br />"

        # Description (full content) of the article
        description = article["article_content"]
        if description:
            p = re.compile(r'<code><')
            q = re.compile(r'></code>')

            description = p.sub('<code>&lt;', description)
            description = q.sub('&gt;</code>', description)

            html += description + "\n<br /><br /><br />"
        else:
            html += "No description available.\n<br /><br /><br />"

        # Generation of the QR Code for the current article
        try:
            os.makedirs("./var/qrcode/")
        except OSError:
            pass
        if not os.path.isfile("./var/qrcode/" + article_id + ".png"):
            # QR Code generation
            try:
                if len(utils.clear_string(description)) > 4296:
                    raise Exception()
                f = qr.QRUrl(url = utils.clear_string(description))
                f.make()
            except:
                f = qr.QRUrl(url = article["article_link"])
                f.make()
            f.save("./var/qrcode/"+article_id+".png")

        # Previous and following articles
        previous, following = None, None
        liste = self.mongo.get_articles_from_collection(feed_id)
        for current_article in self.mongo.get_articles_from_collection(feed_id):
            articles.next()
            if current_article["article_id"] == article_id:
                break
            following = current_article
        if following is None:
            following = liste[liste.count()-1]
        try:
            previous = articles.next()
        except StopIteration:
            previous = liste[0]

        html += """<div style="float:right;"><a href="/article/%s:%s" title="%s"><img src="/img/following-article.png" /></a></div>\n""" % \
            (feed_id, following["article_id"], following["article_title"])
        html += """<div style="float:left;"><a href="/article/%s:%s" title="%s"><img src="/img/previous-article.png" /></a></div>\n""" % \
            (feed_id, previous["article_id"], previous["article_title"])

        html += "\n</div>\n"

        # Footer menu
        html += "<hr />\n"
        html += """\n<a href="/plain_text/%s:%s">Plain text</a>\n""" % (feed_id, article["article_id"])
        html += """ - <a href="/epub/%s:%s">Export to EPUB</a>\n""" % (feed_id, article["article_id"])
        html += """<br />\n<a href="%s">Complete story</a>\n<br />\n""" % (article["article_link"],)

        # Share this article:
        html += "Share this article:<br />\n"
        # on Diaspora
        html += """<a href="javascript:(function(){f='https://%s/bookmarklet?url=%s&amp;title=%s&amp;notes=%s&amp;v=1&amp;';a=function(){if(!window.open(f+'noui=1&amp;jump=doclose','diasporav1','location=yes,links=no,scrollbars=no,toolbar=no,width=620,height=250'))location.href=f+'jump=yes'};if(/Firefox/.test(navigator.userAgent)){setTimeout(a,0)}else{a()}})()">\n\t
                <img src="/img/diaspora.png" title="Share on Diaspora" /></a>\n""" % \
                        (conf.DIASPORA_POD, article["article_link"], article["article_title"], "via pyAggr3g470r")

        # on Identi.ca
        html += """\n\n<a href="http://identi.ca/index.php?action=newnotice&status_textarea=%s: %s" title="Share on Identi.ca" target="_blank"><img src="/img/identica.png" /></a>""" % \
                        (article["article_title"], article["article_link"])

        # on Hacker News
        html += """\n\n<a href='javascript:window.location="http://news.ycombinator.com/submitlink?u="+encodeURIComponent("%s")+"&t="+encodeURIComponent("%s")'><img src="/img/hacker-news.png" title="Share on Hacker News" /></a>""" % \
                        (article["article_link"], article["article_title"])
                        
        # on Pinboard
        html += """\n\n\t<a href="https://api.pinboard.in/v1/posts/add?url=%s&description=%s"
                rel="noreferrer" target="_blank">\n
                <img src="/img/pinboard.png" title="Share on Pinboard" /></a>""" % \
                        (article["article_link"], article["article_title"])

        # on Digg
        html += """\n\n\t<a href="http://digg.com/submit?url=%s&title=%s"
                rel="noreferrer" target="_blank">\n
                <img src="/img/digg.png" title="Share on Digg" /></a>""" % \
                        (article["article_link"], article["article_title"])
        # on reddit
        html += """\n\n\t<a href="http://reddit.com/submit?url=%s&title=%s"
                rel="noreferrer" target="_blank">\n
                <img src="/img/reddit.png" title="Share on reddit" /></a>""" % \
                        (article["article_link"], article["article_title"])
        # on Scoopeo
        html += """\n\n\t<a href="http://scoopeo.com/scoop/new?newurl=%s&title=%s"
                rel="noreferrer" target="_blank">\n
                <img src="/img/scoopeo.png" title="Share on Scoopeo" /></a>""" % \
                        (article["article_link"], article["article_title"])
        # on Blogmarks
        html += """\n\n\t<a href="http://blogmarks.net/my/new.php?url=%s&title=%s"
                rel="noreferrer" target="_blank">\n
                <img src="/img/blogmarks.png" title="Share on Blogmarks" /></a>""" % \
                        (article["article_link"], article["article_title"])

        # Google +1 button
        html += """\n\n<g:plusone size="standard" count="true" href="%s"></g:plusone>""" % \
                        (article["article_link"],)


        # QRCode (for smartphone)
        html += """<br />\n<a href="/var/qrcode/%s.png"><img src="/var/qrcode/%s.png" title="Share with your smartphone" width="500" height="500" /></a>""" % (article_id, article_id)
        html += "<hr />\n" + htmlfooter
        return html

    article.exposed = True


    def feed(self, feed_id, word_size=6):
        """
        This page gives summary informations about a feed (number of articles,
        unread articles, average activity, tag cloud, e-mail notification and
        favourite articles for the current feed.
        """
        try:
            feed = self.mongo.get_feed(feed_id)
            articles = self.mongo.get_articles_from_collection(feed_id)
        except KeyError:
            return self.error_page("This feed do not exists.")
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        html += "<p>The feed <b>" + feed["feed_title"] + "</b> contains <b>" + str(self.mongo.nb_articles(feed_id)) + "</b> articles. "
        html += "Representing " + str((round(float(self.mongo.nb_articles(feed_id)) / 1000, 4)) * 100) + " % of the total " #hack
        html += "(" + str(1000) + ").</p>"
        if articles != []:
            html += "<p>" + (self.mongo.nb_unread_articles(feed_id) == 0 and ["All articles are read"] or [str(self.mongo.nb_unread_articles(feed_id)) + \
                    " unread article" + (self.mongo.nb_unread_articles(feed_id) == 1 and [""] or ["s"])[0]])[0] + ".</p>"
        if feed["mail"] == True:
                html += """<p>You are receiving articles from this feed to the address: <a href="mail:%s">%s</a>. """ % \
                        (conf.mail_to, conf.mail_to)
                html += """<a href="/mail_notification/0:%s">Stop</a> receiving articles from this feed.</p>""" % \
                        (feed_id, )

        if articles != []:
            last_article = utils.string_to_datetime(str(articles[0]["article_date"]))
            first_article = utils.string_to_datetime(str(articles[self.mongo.nb_articles(feed_id)-2]["article_date"]))
            delta = last_article - first_article
            delta_today = datetime.datetime.fromordinal(datetime.date.today().toordinal()) - last_article
            html += "<p>The last article was posted " + str(abs(delta_today.days))  + " day(s) ago.</p>"
            if delta.days > 0:
                html += """<p>Daily average: %s,""" % (str(round(float(self.mongo.nb_articles(feed_id))/abs(delta.days), 2)),)
                html += """ between the %s and the %s.</p>\n""" % \
	              (str(articles[self.mongo.nb_articles(feed_id)-2]["article_date"])[:10], str(articles[0]["article_date"])[:10])

        html += "<br /><h1>Recent articles</h1>"
        for article in articles[:10]:
            if article["article_readed"] == False:
                # not readed articles are in bold
                not_read_begin, not_read_end = "<b>", "</b>"
            else:
                not_read_begin, not_read_end = "", ""

            # display a heart for faved articles
            if article["article_like"] == True:
                like = """ <img src="/img/heart.png" title="I like this article!" />"""
            else:
                like = ""

            # Descrition for the CSS ToolTips
            article_content = utils.clear_string(article["article_content"])
            if article_content:
                description = " ".join(article_content[:500].split(' ')[:-1])
            else:
                description = "No description."
            # Title of the article
            article_title = article["article_title"]
            if len(article_title) >= 110:
                article_title = article_title[:110] + " ..."

            # a description line per article (date, title of the article and
            # CSS description tooltips on mouse over)
            html += article["article_date"].ctime() + " - " + \
                    """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s%s%s<span class="classic">%s</span></a>""" % \
                            (feed["feed_id"], article["article_id"], not_read_begin, \
                            article_title, not_read_end, description) + like + "<br />\n"
        html += "<br />\n"
        html += """<a href="/articles/%s">All articles</a>&nbsp;&nbsp;&nbsp;""" % (feed["feed_id"],)

        favs = [article for article in articles if article["article_like"] == True]
        if len(favs) != 0:
            html += "<br /></br /><h1>Your favorites articles for this feed</h1>"
            for article in favs:
                if article["like"] == True:
                    # descrition for the CSS ToolTips
                    article_content = utils.clear_string(article["article_content"])
                    if article_content:
                        description = " ".join(article_content[:500].split(' ')[:-1])
                    else:
                        description = "No description."

                    # a description line per article (date, title of the article and
                    # CSS description tooltips on mouse over)
                    html += article["article_date"].ctime() + " - " + \
                            """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s<span class="classic">%s</span></a><br />\n""" % \
                                    (feed["feed_id"], article["article_id"], article["article_title"][:150], description)


        # This section enables the user to edit informations about
        # the current feed:
        #  - feed logo;
        #  - feed name;
        #  - URL of the feed (not the site);
        html += "<br />\n<h1>Edit this feed</h1>\n"
        html += '\n\n<form method=post action="/change_feed_name/">' + \
                '<input type="text" name="new_feed_name" value="" ' + \
                'placeholder="Enter a new name (then press Enter)." maxlength=2048 autocomplete="on" size="50" />' + \
                """<input type="hidden" name="feed_url" value="%s" /></form>\n""" % \
                    (feed["feed_link"],)
        html += '\n\n<form method=post action="/change_feed_url/">' + \
                '<input type="url" name="new_feed_url" value="" ' + \
                'placeholder="Enter a new URL in order to retrieve articles (then press Enter)." maxlength=2048 autocomplete="on" size="50" />' + \
                """<input type="hidden" name="old_feed_url" value="%s" /></form>\n""" % \
                    (feed["feed_link"],)
        html += '\n\n<form method=post action="/change_feed_logo/">' + \
                '<input type="url" name="new_feed_logo" value="" ' + \
                'placeholder="Enter the URL of the logo (then press Enter)." maxlength=2048 autocomplete="on" size="50" />' + \
                """<input type="hidden" name="feed_url" value="%s" /></form>\n""" % \
                    (feed["feed_link"],)

        dic = {}
        top_words = utils.top_words(articles = self.mongo.get_articles_from_collection(feed_id), n=50, size=int(word_size))
        html += "</br /><h1>Tag cloud</h1>\n<br />\n"
        # Tags cloud
        html += 'Minimum size of a word:'
        html += """<form method=get action="/feed/%s">""" % (feed["feed_id"],)
        html += """<input type="number" name="word_size" value="%s" min="2" max="15" step="1" size="2">""" % (word_size,)
        html += '<input type="submit" value="OK"></form>\n'
        html += '<div style="width: 35%; overflow:hidden; text-align: justify">' + \
                    utils.tag_cloud(top_words) + '</div>'

        html += "<br />"
        html += "<hr />"
        html += htmlfooter
        return html

    feed.exposed = True


    def articles(self, feed_id):
        """
        This page displays all articles of a feed.
        """
        try:
            feed = self.mongo.get_feed(feed_id)
            articles = self.mongo.get_articles_from_collection(feed_id)
        except KeyError:
            return self.error_page("This feed do not exists.")
        html = htmlheader()
        html += htmlnav
        html += """<div class="right inner">\n"""
        html += """<a href="/mark_as_read/Feed:%s">Mark all articles from this feed as read</a>""" % (feed_id,)
        html += """<br />\n<form method=get action="/search/%s"><input type="search" name="query" value="" placeholder="Search this feed" maxlength=2048 autocomplete="on"></form>\n""" % ("Feed:"+feed_id,)
        html += "<hr />\n"
        html += self.create_list_of_feeds()
        html += """</div> <div class="left inner">"""
        html += """<h1>Articles of the feed <i>%s</i></h1><br />""" % (feed["feed_title"],)

        for article in articles:

            if article["article_readed"] == False:
                # not readed articles are in bold
                not_read_begin, not_read_end = "<b>", "</b>"
            else:
                not_read_begin, not_read_end = "", ""

            if article["article_like"] == True:
                like = """ <img src="/img/heart.png" title="I like this article!" />"""
            else:
                like = ""

            # descrition for the CSS ToolTips
            article_content = utils.clear_string(article["article_content"])
            if article_content:
                description = " ".join(article_content[:500].split(' ')[:-1])
            else:
                description = "No description."

            # a description line per article (date, title of the article and
            # CSS description tooltips on mouse over)
            html += article["article_date"].ctime() + " - " + \
                    """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s%s%s<span class="classic">%s</span></a>""" % \
                            (feed_id, article["article_id"], not_read_begin, \
                            article["article_title"][:150], not_read_end, description) + like + "<br />\n"

        html += """\n<h4><a href="/">All feeds</a></h4>"""
        html += "<hr />\n"
        html += htmlfooter
        return html

    articles.exposed = True


    def unread(self, feed_id=""):
        """
        This page displays all unread articles of a feed.
        """
        feeds = self.mongo.get_all_feeds()
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        if self.mongo.nb_unread_articles() != 0:

            # List unread articles of all the database
            if feed_id == "":
                html += "<h1>Unread article(s)</h1>"
                html += """\n<br />\n<a href="/mark_as_read/">Mark articles as read</a>\n<hr />\n"""
                for feed in feeds:
                    new_feed_section = True
                    nb_unread = 0

                    # For all unread article of the current feed.
                    for article in self.mongo.get_articles_from_collection(feed["feed_id"], condition=("article_readed", False)):
                        nb_unread += 1
                        if new_feed_section is True:
                            new_feed_section = False
                            html += """<h2><a name="%s"><a href="%s" rel="noreferrer" target="_blank">%s</a></a><a href="%s" rel="noreferrer" target="_blank"><img src="%s" width="28" height="28" /></a></h2>\n""" % \
                                (feed["feed_id"], feed["site_link"], feed["feed_title"], feed["feed_link"], feed["feed_image"])

                        # descrition for the CSS ToolTips
                        article_content = utils.clear_string(article["article_content"])
                        if article_content:
                            description = " ".join(article_content[:500].split(' ')[:-1])
                        else:
                            description = "No description."

                        # a description line per article (date, title of the article and
                        # CSS description tooltips on mouse over)
                        html += article["article_date"].ctime() + " - " + \
                                """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s<span class="classic">%s</span></a><br />\n""" % \
                                        (feed["feed_id"], article["article_id"], article["article_title"][:150], description)

                        if nb_unread == self.mongo.nb_unread_articles(feed["feed_id"]):
                            html += """<br />\n<a href="/mark_as_read/Feed:%s">Mark all articles from this feed as read</a>\n""" % \
                                        (feed["feed_id"],)
                html += """<hr />\n<a href="/mark_as_read/">Mark articles as read</a>\n"""

            # List unread articles of a feed
            else:
                try:
                    feed = self.mongo.get_feed(feed_id)
                except:
                    self.error_page("This feed do not exists.")
                html += """<h1>Unread article(s) of the feed <a href="/articles/%s">%s</a></h1>
                    <br />""" % (feed_id, feed["feed_title"])

                # For all unread article of the feed.
                for article in self.mongo.get_articles_from_collection(feed_id, condition=("article_readed", False)):
                    # descrition for the CSS ToolTips
                    article_content = utils.clear_string(article["article_content"])
                    if article_content:
                        description = " ".join(article_content[:500].split(' ')[:-1])
                    else:
                        description = "No description."

                    # a description line per article (date, title of the article and
                    # CSS description tooltips on mouse over)
                    html += article["article_date"].ctime() + " - " + \
                            """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s<span class="classic">%s</span></a><br />\n""" % \
                                    (feed_id, article["article_id"], article["article_title"][:150], description)

                html += """<hr />\n<a href="/mark_as_read/Feed:%s">Mark all as read</a>""" % (feed_id,)
        # No unread article
        else:
            html += '<h1>No unread article(s)</h1>\n<br />\n<a href="/fetch/">Why not check for news?</a>'
        html += """\n<h4><a href="/">All feeds</a></h4>"""
        html += "<hr />\n"
        html += htmlfooter
        return html

    unread.exposed = True


    def history(self, query="all", m=""):
        """
        This page enables to browse articles chronologically.
        """
        feeds = self.mongo.get_all_feeds()
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">\n"""

        # Get the date from the tag cloud
        # Format: /history/?query=year:2011-month:06 to get the
        # list of articles of June, 2011.
        if m != "":
            query = """year:%s-month:%s""" % tuple(m.split('-'))

        if query == "all":
            html += "<h1>Search with tags cloud</h1>\n"
            html += "<h4>Choose a year</h4></br >\n"
        if "year" in query:
            the_year = query.split('-')[0].split(':')[1]
            if "month" not in query:
                html += "<h1>Choose a month for " + the_year + "</h1></br >\n"
        if "month" in query:
            the_month = query.split('-')[1].split(':')[1]
            html += "<h1>Articles of "+ calendar.month_name[int(the_month)] + \
                    ", "+ the_year +".</h1><br />\n"

        timeline = Counter()
        for feed in feeds:
            new_feed_section = True
            for article in self.mongo.get_articles_from_collection(feed["feed_id"]):

                if query == "all":
                    timeline[str(article["article_date"]).split(' ')[0].split('-')[0]] += 1

                elif query[:4] == "year":

                    if str(article["article_date"]).split(' ')[0].split('-')[0] == the_year:
                        timeline[str(article["article_date"]).split(' ')[0].split('-')[1]] += 1

                        if "month" in query:
                            if str(article["article_date"]).split(' ')[0].split('-')[1] == the_month:
                                if article["article_readed"] == False:
                                    # not readed articles are in bold
                                    not_read_begin, not_read_end = "<b>", "</b>"
                                else:
                                    not_read_begin, not_read_end = "", ""

                                if article["article_like"] == True:
                                    like = """ <img src="/img/heart.png" title="I like this article!" />"""
                                else:
                                    like = ""
                                # Descrition for the CSS ToolTips
                                article_content = utils.clear_string(article["article_content"])
                                if article_content:
                                    description = " ".join(article_content[:500].split(' ')[:-1])
                                else:
                                    description = "No description."
                                # Title of the article
                                article_title = article["article_title"]
                                if len(article_title) >= 110:
                                    article_title = article_title[:110] + " ..."

                                if new_feed_section is True:
                                    new_feed_section = False
                                    html += """<h2><a name="%s"><a href="%s" rel="noreferrer"
                                    target="_blank">%s</a></a><a href="%s" rel="noreferrer"
                                    target="_blank"><img src="%s" width="28" height="28" /></a></h2>\n""" % \
                                        (feed["feed_id"], feed["feed_link"], feed["feed_title"], feed["feed_link"], feed["feed_image"])

                                html += article["article_date"].strftime("%a %d (%H:%M:%S) ") + \
                                        """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s%s%s<span class="classic">%s</span></a>""" % \
                                                (feed["feed_id"], article["article_id"], not_read_begin, \
                                                article_title, not_read_end, description) + like + "<br />\n"
        if query == "all":
            query_string = "year"
        elif "year" in query:
            query_string = "year:" + the_year + "-month"
        if "month" not in query:
            html += '<div style="width: 35%; overflow:hidden; text-align: justify">' + \
                        utils.tag_cloud([(elem, timeline[elem]) for elem in timeline.keys()], query_string) + '</div>'
        html += '<br /><br /><h1>Search with a month+year picker</h1>\n'
        html += '<form>\n\t<input name="m" type="month">\n\t<input type="submit" value="Go">\n</form>'
        html += '<hr />'
        html += htmlfooter
        return html

    history.exposed = True


    def plain_text(self, target):
        """
        Display an article in plain text (without HTML tags).
        """
        try:
            feed_id, article_id = target.split(':')
            feed = self.mongo.get_feed(feed_id)
            article = self.mongo.get_article(feed_id, article_id)
        except:
            return self.error_page("Bad URL. This article do not exists.")
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        html += """<h1><i>%s</i> from <a href="/articles/%s">%s</a></h1>\n<br />\n"""% \
                            (article["article_title"], feed_id, feed["feed_title"])
        description = utils.clear_string(article["article_content"])
        if description:
            html += description
        else:
            html += "No description available."
        html += "\n<hr />\n" + htmlfooter
        return html

    plain_text.exposed = True


    def error_page(self, message):
        """
        Display a message (bad feed id, bad article id, etc.)
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        html += """%s""" % message
        html += "\n<hr />\n" + htmlfooter
        return html

    error_page.exposed = True


    def mark_as_read(self, target=""):
        """
        Mark one (or more) article(s) as read by setting the value of the field
        'article_readed' of the MongoDB database to 'True'.
        """
        param, _, identifiant = target.partition(':')

        # Mark all articles as read.
        if param == "":
            self.mongo.mark_as_read(True, None, None)
        # Mark all articles from a feed as read.
        elif param == "Feed" or param == "Feed_FromMainPage":
            self.mongo.mark_as_read(True, identifiant, None)
        # Mark an article as read.
        elif param == "Article":
            self.mongo.mark_as_read(True, identifiant.split(':')[1], identifiant.split(':')[0])
        if param == "" or param == "Feed_FromMainPage":
            return self.index()
        elif param == "Feed":
            return self.articles(identifiant)

    mark_as_read.exposed = True


    def notifications(self):
        """
        List all active e-mail notifications.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        feeds = self.mongo.get_all_feeds(condition=("mail",True))
        if feeds != []:
            html += "<h1>You are receiving e-mails for the following feeds:</h1>\n"
            for feed in feeds:
                html += """\t<a href="/articles/%s">%s</a> - <a href="/mail_notification/0:%s">Stop</a><br />\n""" % \
                        (feed["feed_id"], feed["feed_title"], feed["feed_id"])
        else:
            html += "<p>No active notifications.<p>\n"
        html += """<p>Notifications are sent to: <a href="mail:%s">%s</a></p>""" % \
                        (conf.mail_to, conf.mail_to)
        html += "\n<hr />\n" + htmlfooter
        return html

    notifications.exposed = True


    def mail_notification(self, param):
        """
        Enable or disable to notifications of news for a feed.
        """
        try:
            action, feed_id = param.split(':')
        except:
            return self.error_page("Bad URL. This feed do not exists.")

        return self.index()

    mail_notification.exposed = True


    def like(self, param):
        """
        Mark or unmark an article as favorites.
        """
        try:
            like, feed_id, article_id = param.split(':')
            articles = self.mongo.get_article(feed_id, article_id)
        except:
            return self.error_page("Bad URL. This article do not exists.")
        self.mongo.like_article("1"==like, feed_id, article_id)
        return self.article(feed_id+":"+article_id)

    like.exposed = True


    def favorites(self):
        """
        List of favorites articles
        """
        feeds = self.mongo.get_all_feeds()
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        html += "<h1>Your favorites articles</h1>"
        for feed in feeds:
            new_feed_section = True
            for article in self.mongo.get_articles_from_collection(feed["feed_id"]):
                if article["article_like"] == True:
                    if new_feed_section is True:
                        new_feed_section = False
                        html += """<h2><a name="%s"><a href="%s" rel="noreferrer"target="_blank">%s</a></a><a href="%s" rel="noreferrer" target="_blank"><img src="%s" width="28" height="28" /></a></h2>\n""" % \
                            (feed["feed_id"], feed["feed_link"], feed["feed_title"], feed["feed_link"], feed["feed_image"])

                    # descrition for the CSS ToolTips
                    article_content = utils.clear_string(article["article_content"])
                    if article_content:
                        description = " ".join(article_content[:500].split(' ')[:-1])
                    else:
                        description = "No description."

                    # a description line per article (date, title of the article and
                    # CSS description tooltips on mouse over)
                    html += article["article_date"].ctime() + " - " + \
                            """<a class="tooltip" href="/article/%s:%s" rel="noreferrer" target="_blank">%s<span class="classic">%s</span></a><br />\n""" % \
                                    (feed["feed_id"], article["article_id"], article["article_title"][:150], description)
        html += "<hr />\n"
        html += htmlfooter
        return html

    favorites.exposed = True


    def add_feed(self, url):
        """
        Add a new feed with the URL of a page.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        # search the feed in the HTML page with BeautifulSoup
        feed_url = utils.search_feed(url)
        if feed_url is None:
            return self.error_page("Impossible to find a feed at this URL.")
        # if a feed exists
        else:
            result = utils.add_feed(feed_url)
        # if the feed is not in the file feed.lst
        if result is False:
            html +=  "<p>You are already following this feed!</p>"
        else:
            html += """<p>Feed added. You can now <a href="/fetch/">fetch your feeds</a>.</p>"""
        html += """\n<br />\n<a href="/management/">Back to the management page.</a><br />\n"""
        html += "<hr />\n"
        html += htmlfooter
        return html

    add_feed.exposed = True


    def remove_feed(self, feed_id):
        """
        Remove a feed from the file feed.lst and from the MongoDB database.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""

        feed = self.mongo.get_feed(feed_id)
        self.mongo.delete_feed(feed_id)
        utils.remove_feed(feed["feed_link"])

        html += """<p>All articles from the feed <i>%s</i> are now removed from the base.</p><br />""" % \
                (feed["feed_title"],)
        html += """<a href="/management/">Back to the management page.</a><br />\n"""
        html += "<hr />\n"
        html += htmlfooter
        return html

    remove_feed.exposed = True


    def change_feed_url(self, new_feed_url, old_feed_url):
        """
        Enables to change the URL of a feed already present in the database.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        utils.change_feed_url(old_feed_url, new_feed_url)
        html += "<p>The URL of the feed has been changed.</p>"
        html += "<hr />\n"
        html += htmlfooter
        return html

    change_feed_url.exposed = True

    def change_feed_name(self, feed_url, new_feed_name):
        """
        Enables to change the name of a feed.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        utils.change_feed_name(feed_url, new_feed_name)
        html += "<p>The name of the feed has been changed.</p>"
        html += "<hr />\n"
        html += htmlfooter
        return html

    change_feed_name.exposed = True

    def change_feed_logo(self, feed_url, new_feed_logo):
        """
        Enables to change the name of a feed.
        """
        html = htmlheader()
        html += htmlnav
        html += """<div class="left inner">"""
        utils.change_feed_logo(feed_url, new_feed_logo)
        html += "<p>The logo of the feed has been changed.</p>"
        html += "<hr />\n"
        html += htmlfooter
        return html

    change_feed_logo.exposed = True

    def delete_article(self, param):
        """
        Delete an article.
        """
        try:
            feed_id, article_id = param.split(':')
            self.mongo.delete_article(feed_id, article_id)
        except:
            return self.error_page("Bad URL. This article do not exists.")

        return self.index()

    delete_article.exposed = True


    def drop_base(self):
        """
        Delete all articles.
        """
        self.mongo.drop_database()
        return self.index()

    drop_base.exposed = True


    def export(self, export_method):
        """
        Export articles currently loaded from the MongoDB database with
        the appropriate function of the 'export' module.
        """
        try:
            getattr(export, export_method)(self.mongo.get_all_articles())
        except Exception, e:
            return self.error_page(e)
        return self.management()

    export.exposed = True


    def epub(self, param):
        """
        Export an article to EPUB.
        """
        try:
            from epub import ez_epub
        except Exception, e:
            return self.error_page(e)
        try:
            feed_id, article_id = param.split(':')
        except:
            return self.error_page("Bad URL.")
        try:
            feed_id, article_id = param.split(':')
            feed = self.mongo.get_feed(feed_id)
            articles = self.mongo.get_articles_from_collection(feed_id)
            article = self.mongo.get_article(feed_id, article_id)
        except:
            self.error_page("This article do not exists.")
        try:
            folder = conf.path + "/var/export/epub/"
            os.makedirs(folder)
        except OSError:
            # directories already exists (not a problem)
            pass
        section = ez_epub.Section()
        section.title = article["article_title"].decode('utf-8')
        section.paragraphs = [utils.clear_string(article["article_content"])]
        ez_epub.makeBook(article["article_title"], [feed["feed_title"]], [section], \
                os.path.normpath(folder) + "article.epub", lang='en-US', cover=None)
        return self.article(param)

    epub.exposed = True


if __name__ == '__main__':
    # Point of entry in execution mode
    print "Launching pyAggr3g470r..."

    root = Root()
    root.favicon_ico = cherrypy.tools.staticfile.handler(filename=os.path.join(conf.path + "/img/favicon.png"))
    cherrypy.config.update({ 'server.socket_port': 12556, 'server.socket_host': "0.0.0.0"})
    cherrypy.config.update({'error_page.404': error_page_404})
    _cp_config = {'request.error_response': handle_error}

    cherrypy.quickstart(root, "/" ,config=conf.path + "/cfg/cherrypy.cfg")
bgstack15