aboutsummaryrefslogtreecommitdiffhomepage
path: root/inc/poche/Poche.class.php
blob: a49413f23816837688ee5b279278a2a9c5bc3d2e (plain) (blame)
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
<?php
/**
 * wallabag, self hostable application allowing you to not miss any content anymore
 *
 * @category   wallabag
 * @author     Nicolas Lœuillet <nicolas@loeuillet.org>
 * @copyright  2013
 * @license    http://opensource.org/licenses/MIT see COPYING file
 */

class Poche
{
    /**
     * @var User
     */
    public $user;
    /**
     * @var Database
     */
    public $store;
    /**
     * @var Template
     */
    public $tpl;
    /**
     * @var Language
     */
    public $language;
    /**
     * @var Routing
     */
    public $routing;
    /**
     * @var Messages
     */
    public $messages;
    /**
     * @var Paginator
     */
    public $pagination;

    public function __construct()
    {
        $this->init();
    }

    private function init()
    {
        Tools::initPhp();

        $pocheUser = Session::getParam('poche_user');

        if ($pocheUser && $pocheUser != array()) {
            $this->user = $pocheUser;
        } else {
            // fake user, just for install & login screens
            $this->user = new User();
            $this->user->setConfig($this->getDefaultConfig());
        }

        $this->pagination   = new Paginator($this->user->getConfigValue('pager'), 'p');
        $this->language     = new Language($this);
        $this->tpl          = new Template($this);
        $this->store        = new Database();
        $this->messages     = new Messages();
        $this->routing      = new Routing($this);
    }

    public function run()
    {
        $this->routing->run();
    }

    /**
     * Creates a new user
     */
    public function createNewUser($username, $password)
    {
        if (!empty($username) && !empty($password)){
            $newUsername = filter_var($username, FILTER_SANITIZE_STRING);
            if (!$this->store->userExists($newUsername)){
                if ($this->store->install($newUsername, Tools::encodeString($password . $newUsername))) {
                    Tools::logm('The new user ' . $newUsername . ' has been installed');
                    $this->messages->add('s', sprintf(_('The new user %s has been installed. Do you want to <a href="?logout">logout ?</a>'), $newUsername));
                    Tools::redirect();
                }
                else {
                    Tools::logm('error during adding new user');
                    Tools::redirect();
                }
            }
            else {
                $this->messages->add('e', sprintf(_('Error : An user with the name %s already exists !'), $newUsername));
                Tools::logm('An user with the name ' . $newUsername . ' already exists !');
                Tools::redirect();
            }
        }
    }

    /**
     * Delete an existing user
     */
    public function deleteUser($password)
    {
        if ($this->store->listUsers() > 1) {
            if (Tools::encodeString($password . $this->user->getUsername()) == $this->store->getUserPassword($this->user->getId())) {
                $username = $this->user->getUsername();
                $this->store->deleteUserConfig($this->user->getId());
                Tools::logm('The configuration for user '. $username .' has been deleted !');
                $this->store->deleteTagsEntriesAndEntries($this->user->getId());
                Tools::logm('The entries for user '. $username .' has been deleted !');
                $this->store->deleteUser($this->user->getId());
                Tools::logm('User '. $username .' has been completely deleted !');
                Session::logout();
                Tools::logm('logout');
                Tools::redirect();
                $this->messages->add('s', sprintf(_('User %s has been successfully deleted !'), $username));
            }
            else {
                Tools::logm('Bad password !');
                $this->messages->add('e', _('Error : The password is wrong !'));
            }
        }
        else {
            Tools::logm('Only user !');
            $this->messages->add('e', _('Error : You are the only user, you cannot delete your account !'));
        }
    }

    public function getDefaultConfig()
    {
        return array(
            'pager' => PAGINATION,
            'language' => LANG,
            'theme' => DEFAULT_THEME
        );
    }

    /**
     * Call action (mark as fav, archive, delete, etc.)
     */
    public function action($action, Url $url, $id = 0, $import = FALSE, $autoclose = FALSE, $tags = null)
    {
        switch ($action)
        {
            case 'add':
                $content = Tools::getPageContent($url);
                $title = ($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled');
                $body = $content['rss']['channel']['item']['description'];

                // clean content from prevent xss attack
                $purifier = $this->_getPurifier();
                $title = $purifier->purify($title);
                $body = $purifier->purify($body);

                //search for possible duplicate
                $duplicate = NULL;
                $duplicate = $this->store->retrieveOneByURL($url->getUrl(), $this->user->getId());

                $last_id = $this->store->add($url->getUrl(), $title, $body, $this->user->getId());
                if ( $last_id ) {
                    Tools::logm('add link ' . $url->getUrl());
                    if (DOWNLOAD_PICTURES) {
                        $content = Picture::filterPicture($body, $url->getUrl(), $last_id);
                        Tools::logm('updating content article');
                        $this->store->updateContent($last_id, $content, $this->user->getId());
                    }

                    if ($duplicate != NULL) {
                        // duplicate exists, so, older entry needs to be deleted (as new entry should go to the top of list), BUT favorite mark and tags should be preserved
                        Tools::logm('link ' . $url->getUrl() . ' is a duplicate');
                        // 1) - preserve tags and favorite, then drop old entry
                        $this->store->reassignTags($duplicate['id'], $last_id);
                        if ($duplicate['is_fav']) {
                          $this->store->favoriteById($last_id, $this->user->getId());
                        }
                        if ($this->store->deleteById($duplicate['id'], $this->user->getId())) {
                          Tools::logm('previous link ' . $url->getUrl() .' entry deleted');
                        }
                    }

                    $this->messages->add('s', _('the link has been added successfully'));
                }
                else {
                    $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
                    Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
                }

                if ($autoclose == TRUE) {
                  Tools::redirect('?view=home');
                } else {
                  Tools::redirect('?view=home&closewin=true');
                }
                break;
            case 'delete':
                $msg = 'delete link #' . $id;
                if ($this->store->deleteById($id, $this->user->getId())) {
                    if (DOWNLOAD_PICTURES) {
                        Picture::removeDirectory(ABS_PATH . $id);
                    }
                    $this->messages->add('s', _('the link has been deleted successfully'));
                }
                else {
                    $this->messages->add('e', _('the link wasn\'t deleted'));
                    $msg = 'error : can\'t delete link #' . $id;
                }
                Tools::logm($msg);
                Tools::redirect('?');
                break;
            case 'toggle_fav' :
                $this->store->favoriteById($id, $this->user->getId());
                Tools::logm('mark as favorite link #' . $id);
                if ( Tools::isAjaxRequest() ) {
                  echo 1;
                  exit;
                }
                else {
                  Tools::redirect();
                }
                break;
            case 'toggle_archive' :
                $this->store->archiveById($id, $this->user->getId());
                Tools::logm('archive link #' . $id);
                if ( Tools::isAjaxRequest() ) {
                  echo 1;
                  exit;
                }
                else {
                  Tools::redirect();
                }
                break;
            case 'archive_all' :
                $this->store->archiveAll($this->user->getId());
                Tools::logm('archive all links');
                Tools::redirect();
                break;
            case 'add_tag' :
                if (isset($_GET['search'])) {
                    //when we want to apply a tag to a search
                    $tags = array($_GET['search']);
                    $allentry_ids = $this->store->search($tags[0], $this->user->getId());
                    $entry_ids = array();
                    foreach ($allentry_ids as $eachentry) {
                        $entry_ids[] = $eachentry[0];
                    }
                } else { //add a tag to a single article
                    $tags = explode(',', $_POST['value']);
                    $entry_ids = array($_POST['entry_id']);
                }
                foreach($entry_ids as $entry_id) {
                    $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
                    if (!$entry) {
                        $this->messages->add('e', _('Article not found!'));
                        Tools::logm('error : article not found');
                        Tools::redirect();
                    }
                    //get all already set tags to preven duplicates
                    $already_set_tags = array();
                    $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
                    foreach ($entry_tags as $tag) {
                      $already_set_tags[] = $tag['value'];
                    }
                    foreach($tags as $key => $tag_value) {
                        $value = trim($tag_value);
                        if ($value && !in_array($value, $already_set_tags)) {
                          $tag = $this->store->retrieveTagByValue($value);
                          if (is_null($tag)) {
                              # we create the tag
                              $tag = $this->store->createTag($value);
                              $sequence = '';
                              if (STORAGE == 'postgres') {
                                  $sequence = 'tags_id_seq';
                              }
                              $tag_id = $this->store->getLastId($sequence);
                          }
                          else {
                              $tag_id = $tag['id'];
                          }

                          # we assign the tag to the article
                          $this->store->setTagToEntry($tag_id, $entry_id);
                        }
                    }
                }
                $this->messages->add('s', _('The tag has been applied successfully'));
                Tools::logm('The tag has been applied successfully');
                Tools::redirect();
                break;
            case 'remove_tag' :
                $tag_id = $_GET['tag_id'];
                $entry = $this->store->retrieveOneById($id, $this->user->getId());
                if (!$entry) {
                    $this->messages->add('e', _('Article not found!'));
                    Tools::logm('error : article not found');
                    Tools::redirect();
                }
                $this->store->removeTagForEntry($id, $tag_id);
                Tools::logm('tag entry deleted');
                if ($this->store->cleanUnusedTag($tag_id)) {
                    Tools::logm('tag deleted');
                }
                $this->messages->add('s', _('The tag has been successfully deleted'));
                Tools::redirect();
                break;
            default:
                break;
        }
    }

    function displayView($view, $id = 0)
    {
        $tpl_vars = array();

        switch ($view)
        {
            case 'config':
                $dev_infos = $this->_getPocheVersion('dev');
                $dev = trim($dev_infos[0]);
                $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
                $prod_infos = $this->_getPocheVersion('prod');
                $prod = trim($prod_infos[0]);
                $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
                $compare_dev = version_compare(POCHE, $dev);
                $compare_prod = version_compare(POCHE, $prod);
                $themes = $this->tpl->getInstalledThemes();
                $languages = $this->language->getInstalledLanguages();
                $token = $this->user->getConfigValue('token');
                $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
                $only_user = ($this->store->listUsers() > 1) ? false : true;
                $tpl_vars = array(
                    'themes' => $themes,
                    'languages' => $languages,
                    'dev' => $dev,
                    'prod' => $prod,
                    'check_time_dev' => $check_time_dev,
                    'check_time_prod' => $check_time_prod,
                    'compare_dev' => $compare_dev,
                    'compare_prod' => $compare_prod,
                    'token' => $token,
                    'user_id' => $this->user->getId(),
                    'http_auth' => $http_auth,
                    'only_user' => $only_user
                );
                Tools::logm('config view');
                break;
            case 'edit-tags':
                # tags
                $entry = $this->store->retrieveOneById($id, $this->user->getId());
                if (!$entry) {
                    $this->messages->add('e', _('Article not found!'));
                    Tools::logm('error : article not found');
                    Tools::redirect();
                }
                $tags = $this->store->retrieveTagsByEntry($id);
                $tpl_vars = array(
                    'entry_id' => $id,
                    'tags' => $tags,
                    'entry' => $entry,
                );
                break;
            case 'tags':
                $token = $this->user->getConfigValue('token');
                //if term is set - search tags for this term
                $term = Tools::checkVar('term');
                $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
                if (Tools::isAjaxRequest()) {
                  $result = array();
                  foreach ($tags as $tag) {
                    $result[] = $tag['value'];
                  }
                  echo json_encode($result);
                  exit;
                }
                $tpl_vars = array(
                    'token' => $token,
                    'user_id' => $this->user->getId(),
                    'tags' => $tags,
                );
                break;
            case 'search':
                if (isset($_GET['search'])) {
                   $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
                   $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
                   $count = count($tpl_vars['entries']);
                   $this->pagination->set_total($count);
                   $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
                            $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
                   $tpl_vars['page_links'] = $page_links;
                   $tpl_vars['nb_results'] = $count;
                   $tpl_vars['search_term'] = $search;
                }
                break;
            case 'view':
                $entry = $this->store->retrieveOneById($id, $this->user->getId());
                if ($entry != NULL) {
                    Tools::logm('view link #' . $id);
                    $content = $entry['content'];
                    if (function_exists('tidy_parse_string')) {
                        $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
                        $tidy->cleanRepair();
                        $content = $tidy->value;
                    }

                    # flattr checking
                    $flattr = new FlattrItem();
                    $flattr->checkItem($entry['url'], $entry['id']);

                    # tags
                    $tags = $this->store->retrieveTagsByEntry($entry['id']);

                    $tpl_vars = array(
                        'entry' => $entry,
                        'content' => $content,
                        'flattr' => $flattr,
                        'tags' => $tags
                    );
                }
                else {
                    Tools::logm('error in view call : entry is null');
                }
                break;
            default: # home, favorites, archive and tag views
                $tpl_vars = array(
                    'entries' => '',
                    'page_links' => '',
                    'nb_results' => '',
                    'listmode' => (isset($_COOKIE['listmode']) ? true : false),
                );

                //if id is given - we retrieve entries by tag: id is tag id
                if ($id) {
                  $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
                  $tpl_vars['id'] = intval($id);
                }

                $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);

                if ($count > 0) {
                    $this->pagination->set_total($count);
                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
                        $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
                    $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
                    $tpl_vars['page_links'] = $page_links;
                    $tpl_vars['nb_results'] = $count;
                }
                Tools::logm('display ' . $view . ' view');
                break;
        }

        return $tpl_vars;
    }

    /**
     * update the password of the current user.
     * if MODE_DEMO is TRUE, the password can't be updated.
     * @todo add the return value
     * @todo set the new password in function header like this updatePassword($newPassword)
     * @return boolean
     */
    public function updatePassword($password, $confirmPassword)
    {
        if (MODE_DEMO) {
            $this->messages->add('i', _('in demo mode, you can\'t update your password'));
            Tools::logm('in demo mode, you can\'t do this');
            Tools::redirect('?view=config');
        }
        else {
            if (isset($password) && isset($confirmPassword)) {
                if ($password == $confirmPassword && !empty($password)) {
                    $this->messages->add('s', _('your password has been updated'));
                    $this->store->updatePassword($this->user->getId(), Tools::encodeString($password . $this->user->getUsername()));
                    Session::logout();
                    Tools::logm('password updated');
                    Tools::redirect();
                }
                else {
                    $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
                    Tools::redirect('?view=config');
                }
            }
        }
    }

    /**
     * Get credentials from differents sources
     * It redirects the user to the $referer link
     *
     * @return array
     */
    private function credentials()
    {
        if (isset($_SERVER['PHP_AUTH_USER'])) {
            return array($_SERVER['PHP_AUTH_USER'], 'php_auth', true);
        }
        if (!empty($_POST['login']) && !empty($_POST['password'])) {
            return array($_POST['login'], $_POST['password'], false);
        }
        if (isset($_SERVER['REMOTE_USER'])) {
            return array($_SERVER['REMOTE_USER'], 'http_auth', true);
        }

        return array(false, false, false);
    }

    /**
     * checks if login & password are correct and save the user in session.
     * it redirects the user to the $referer link
     * @param  string $referer the url to redirect after login
     * @todo add the return value
     * @return boolean
     */
    public function login($referer)
    {
        list($login,$password,$isauthenticated)=$this->credentials();
        if($login === false || $password === false) {
            $this->messages->add('e', _('login failed: you have to fill all fields'));
            Tools::logm('login failed');
            Tools::redirect();
        }
        if (!empty($login) && !empty($password)) {
            $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
            if ($user != array()) {
                # Save login into Session
                $longlastingsession = isset($_POST['longlastingsession']);
                $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
                Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
                $this->messages->add('s', _('welcome to your wallabag'));
                Tools::logm('login successful');
                Tools::redirect($referer);
            }
            $this->messages->add('e', _('login failed: bad login or password'));
            Tools::logm('login failed');
            Tools::redirect();
        }
    }

    /**
     * log out the poche user. It cleans the session.
     * @todo add the return value
     * @return boolean
     */
    public function logout()
    {
        $this->user = array();
        Session::logout();
        Tools::logm('logout');
        Tools::redirect();
    }

    /**
     * import datas into your wallabag
     * @return boolean
     */
    public function import()
    {
        if (isset($_FILES['file'])) {
            Tools::logm('Import stated: parsing file');

            // assume, that file is in json format

            $str_data = file_get_contents($_FILES['file']['tmp_name']);
            $data = json_decode($str_data, true);
            if ($data === null) {

                // not json - assume html

                $html = new simple_html_dom();
                $html->load_file($_FILES['file']['tmp_name']);
                $data = array();
                $read = 0;
                foreach(array('ol','ul') as $list) {
                    foreach($html->find($list) as $ul) {
                        foreach($ul->find('li') as $li) {
                            $tmpEntry = array();
                            $a = $li->find('a');
                            $tmpEntry['url'] = $a[0]->href;
                            $tmpEntry['tags'] = $a[0]->tags;
                            $tmpEntry['is_read'] = $read;
                            if ($tmpEntry['url']) {
                                $data[] = $tmpEntry;
                            }
                        }

                        // the second <ol/ul> is for read links

                        $read = ((sizeof($data) && $read) ? 0 : 1);
                    }
                }
            }

            // for readability structure

            foreach($data as $record) {
                if (is_array($record)) {
                    $data[] = $record;
                    foreach($record as $record2) {
                        if (is_array($record2)) {
                            $data[] = $record2;
                        }
                    }
                }
            }

            $urlsInserted = array(); //urls of articles inserted
            foreach($data as $record) {
                $url = trim(isset($record['article__url']) ? $record['article__url'] : (isset($record['url']) ? $record['url'] : ''));
                if ($url and !in_array($url, $urlsInserted)) {
                    $title = (isset($record['title']) ? $record['title'] : _('Untitled - Import - ') . '</a> <a href="./?import">' . _('click to finish import') . '</a><a>');
                    $body = (isset($record['content']) ? $record['content'] : '');
                    $isRead = (isset($record['is_read']) ? intval($record['is_read']) : (isset($record['archive']) ? intval($record['archive']) : 0));
                    $isFavorite = (isset($record['is_fav']) ? intval($record['is_fav']) : (isset($record['favorite']) ? intval($record['favorite']) : 0));

                    // insert new record

                    $id = $this->store->add($url, $title, $body, $this->user->getId() , $isFavorite, $isRead);
                    if ($id) {
                        $urlsInserted[] = $url; //add
                        if (isset($record['tags']) && trim($record['tags'])) {

                            // @TODO: set tags

                        }
                    }
                }
            }

            $i = sizeof($urlsInserted);
            if ($i > 0) {
                $this->messages->add('s', _('Articles inserted: ') . $i . _('. Please note, that some may be marked as "read".'));
            }

            Tools::logm('Import of articles finished: ' . $i . ' articles added (w/o content if not provided).');
        }

        // file parsing finished here
        // now download article contents if any
        // check if we need to download any content

        $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());

        if ($recordsDownloadRequired == 0) {

            // nothing to download

            $this->messages->add('s', _('Import finished.'));
            Tools::logm('Import finished completely');
            Tools::redirect();
        }
        else {

            // if just inserted - don't download anything, download will start in next reload

            if (!isset($_FILES['file'])) {

                // download next batch

                Tools::logm('Fetching next batch of articles...');
                $items = $this->store->retrieveUnfetchedEntries($this->user->getId() , IMPORT_LIMIT);
                $purifier = $this->_getPurifier();
                foreach($items as $item) {
                    $url = new Url(base64_encode($item['url']));
                    Tools::logm('Fetching article ' . $item['id']);
                    $content = Tools::getPageContent($url);
                    $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
                    $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));

                    // clean content to prevent xss attack

                    $title = $purifier->purify($title);
                    $body = $purifier->purify($body);
                    $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
                    Tools::logm('Article ' . $item['id'] . ' updated.');
                }
            }
        }

        return array(
            'includeImport' => true,
            'import' => array(
                'recordsDownloadRequired' => $recordsDownloadRequired,
                'recordsUnderDownload' => IMPORT_LIMIT,
                'delay' => IMPORT_DELAY * 1000
            )
        );
    }

    /**
     * export poche entries in json
     * @return json all poche entries
     */
    public function export()
    {
      $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
      header('Content-Disposition: attachment; filename='.$filename);

      $entries = $this->store->retrieveAll($this->user->getId());
      echo $this->tpl->render('export.twig', array(
          'export' => Tools::renderJson($entries),
      ));
      Tools::logm('export view');
    }

    /**
     * Checks online the latest version of poche and cache it
     * @param  string $which 'prod' or 'dev'
     * @return string        latest $which version
     */
    private function _getPocheVersion($which = 'prod') {
      $cache_file = CACHE . '/' . $which;
      $check_time = time();

      # checks if the cached version file exists
      if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
         $version = file_get_contents($cache_file);
         $check_time = filemtime($cache_file);
      } else {
         $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
         file_put_contents($cache_file, $version, LOCK_EX);
      }
      return array($version, $check_time);
    }

    /**
     * Update token for current user
     */
    public function updateToken()
    {
        $token = Tools::generateToken();
        $this->store->updateUserConfig($this->user->getId(), 'token', $token);
        $currentConfig = $_SESSION['poche_user']->config;
        $currentConfig['token'] = $token;
        $_SESSION['poche_user']->setConfig($currentConfig);
        Tools::redirect();
    }

    /**
     * Generate RSS feeds for current user
     *
     * @param $token
     * @param $user_id
     * @param $tag_id
     * @param string $type
     */
    public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
    {
        $allowed_types = array('home', 'fav', 'archive', 'tag');
        $config = $this->store->getConfigUser($user_id);

        if ($config == null) {
            die(sprintf(_('User with this id (%d) does not exist.'), $user_id));
        }

        if (!in_array($type, $allowed_types) || $token != $config['token']) {
            die(_('Uh, there is a problem while generating feeds.'));
        }

        $feed = new FeedWriter(RSS2);
        $feed->setTitle('wallabag — ' . $type . ' feed');
        $feed->setLink(Tools::getPocheUrl());
        $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
        $feed->setChannelElement('generator', 'wallabag');
        $feed->setDescription('wallabag ' . $type . ' elements');

        if ($type == 'tag') {
            $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
        }
        else {
            $entries = $this->store->getEntriesByView($type, $user_id);
        }

        if (count($entries) > 0) {
            foreach ($entries as $entry) {
                $newItem = $feed->createNewItem();
                $newItem->setTitle($entry['title']);
                $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
                $newItem->setLink($entry['url']);
                $newItem->setDate(time());
                $newItem->setDescription($entry['content']);
                $feed->addItem($newItem);
            }
        }

        $feed->genarateFeed();
        exit;
    }



    /**
     * Returns new purifier object with actual config
     */
    private function _getPurifier()
    {
        $config = HTMLPurifier_Config::createDefault();
        $config->set('Cache.SerializerPath', CACHE);
        $config->set('HTML.SafeIframe', true);

        //allow YouTube, Vimeo and dailymotion videos
        $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/|www\.dailymotion\.com/embed/video/)%');

        return new HTMLPurifier($config);
    }


}