include/newsletter.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2013 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 // {{{ class MailNotFound
  23
  24 class MailNotFound extends Exception {
  25 }
  26
  27 // }}}
  28
  29 // {{{ class NewsLetter
  30
  31 class NewsLetter
  32 {
  33     public $id;  // ID of the NL (in table newsletters)
  34     public $group;  // Short name of the group corresponding to the NL
  35     public $group_id;  // ID of that group
  36     public $name;  // Name of the NL (e.g "Lettre de Polytechnique.org", ...)
  37     public $cats;  // List of all categories for this NL
  38     public $criteria;  // PlFlagSet of allowed filters for recipient selection
  39
  40     protected $custom_css = false;
  41
  42     // Base name to use instead of the group short name for NLs without a custom CSS
  43     const FORMAT_DEFAULT_GROUP = 'default';
  44
  45     // Diminutif of X.net groups with a specific NL view
  46     const GROUP_XORG = 'Polytechnique.org';
  47     const GROUP_COMMUNITY = 'Annonces';
  48     const GROUP_AX = 'AX';
  49     const GROUP_EP = 'Ecole';
  50     const GROUP_FX = 'FX';
  51
  52     // Searches on mutiple fields
  53     const SEARCH_ALL = 'all';
  54     const SEARCH_TITLE = 'title';
  55
  56
  57     // {{{ Constructor, NewsLetter retrieval (forGroup, getAll)
  58
  59     public function __construct($id)
  60     {
  61         // Load NL data
  62         $res = XDB::query('SELECT  nls.group_id, g.diminutif AS group_name,
  63                                    nls.name AS nl_name, nls.custom_css, nls.criteria
  64                              FROM  newsletters AS nls
  65                         LEFT JOIN  groups AS g ON (nls.group_id = g.id)
  66                             WHERE  nls.id = {?}',
  67                             $id);
  68         if (!$res->numRows()) {
  69             throw new MailNotFound();
  70         }
  71
  72         $data = $res->fetchOneAssoc();
  73         $this->id = $id;
  74         $this->group_id = $data['group_id'];
  75         $this->group = $data['group_name'];
  76         $this->name = $data['nl_name'];
  77         $this->custom_css = $data['custom_css'];
  78         $this->criteria = new PlFlagSet($data['criteria']);
  79
  80         // Load the categories
  81         $res = XDB::iterRow(
  82             'SELECT  cid, title
  83                FROM  newsletter_cat
  84               WHERE  nlid = {?}
  85            ORDER BY  pos', $id);
  86         while (list($cid, $title) = $res->next()) {
  87             $this->cats[$cid] = $title;
  88         }
  89     }
  90
  91     /** Retrieve the NL associated with a given group.
  92      * @p $group Short name of the group
  93      * @return A NewsLetter object, or null if the group doesn't have a NL.
  94      */
  95     public static function forGroup($group)
  96     {
  97         $res = XDB::query('SELECT  nls.id
  98                              FROM  newsletters AS nls
  99                         LEFT JOIN  groups AS g ON (nls.group_id = g.id)
 100                             WHERE  g.diminutif = {?}', $group);
 101         if (!$res->numRows()) {
 102             return null;
 103         }
 104         return new NewsLetter($res->fetchOneCell());
 105     }
 106
 107     /** Retrieve all newsletters
 108      * @return An array of $id => NewsLetter objects
 109      */
 110     public static function getAll($sort = 'id', $order = 'ASC')
 111     {
 112         $res = XDB::fetchAllAssoc('SELECT  n.id, g.nom AS group_name, n.name, n.custom_css, n.criteria, g.diminutif AS group_link
 113                                      FROM  newsletters AS n
 114                                INNER JOIN  groups      AS g ON (n.group_id = g.id)
 115                                  ORDER BY  ' . $sort . ' ' . $order);
 116         return $res;
 117     }
 118
 119     // }}}
 120     // {{{ Issue retrieval
 121
 122     /** Retrieve all issues which should be sent
 123      * @return An array of NLIssue objects to send (i.e state = 'new' and send_before <= today)
 124      */
 125     public static function getIssuesToSend()
 126     {
 127         $res = XDB::query('SELECT  id
 128                              FROM  newsletter_issues
 129                             WHERE  state = \'pending\' AND send_before <= NOW()');
 130         $issues = array();
 131         foreach ($res->fetchColumn() as $id) {
 132             $issues[$id] = new NLIssue($id);
 133         }
 134         return $issues;
 135     }
 136
 137     /** Retrieve a given issue of this NewsLetter
 138      * @p $name Name or ID of the issue to retrieve.
 139      * @return A NLIssue object.
 140      *
 141      * $name may be either a short_name, an ID or the special value 'last' which
 142      * selects the latest sent NL.
 143      * If $name is null, this will retrieve the current pending NL.
 144      */
 145     public function getIssue($name = null, $only_sent = true)
 146     {
 147         if ($name) {
 148             if ($name == 'last') {
 149                 if ($only_sent) {
 150                     $where = 'state = \'sent\' AND ';
 151                 } else {
 152                     $where = '';
 153                 }
 154                 $res = XDB::query('SELECT  MAX(id)
 155                                      FROM  newsletter_issues
 156                                     WHERE  ' . $where . ' nlid = {?}',
 157                                    $this->id);
 158             } else {
 159                 $res = XDB::query('SELECT  id
 160                                      FROM  newsletter_issues
 161                                     WHERE  nlid = {?} AND (id = {?} OR short_name = {?})',
 162                                   $this->id, $name, $name);
 163             }
 164             if (!$res->numRows()) {
 165                 throw new MailNotFound();
 166             }
 167             $id = $res->fetchOneCell();
 168         } else {
 169             $query = XDB::format('SELECT  id
 170                                     FROM  newsletter_issues
 171                                    WHERE  nlid = {?} AND state = \'new\'
 172                                 ORDER BY  id DESC', $this->id);
 173             $res = XDB::query($query);
 174             if ($res->numRows()) {
 175                 $id = $res->fetchOneCell();
 176             } else {
 177                 // Create a new, empty issue, and return it
 178                 $id = $this->createPending();
 179             }
 180         }
 181
 182         return new NLIssue($id, $this);
 183     }
 184
 185     /** Create a new, empty, pending newsletter issue
 186      * @p $nlid The id of the NL for which a new pending issue should be created.
 187      * @return Id of the newly created issue.
 188      */
 189     public function createPending()
 190     {
 191         XDB::execute('INSERT INTO  newsletter_issues
 192                               SET  nlid = {?}, state=\'new\', date=NOW(),
 193                                    title=\'to be continued\',
 194                                    mail_title=\'to be continued\'',
 195                                    $this->id);
 196         return XDB::insertId();
 197     }
 198
 199     /** Return all sent issues of this newsletter.
 200      * @return An array of (id => NLIssue)
 201      */
 202     public function listSentIssues($check_user = false, $user = null)
 203     {
 204         if ($check_user && $user == null) {
 205             $user = S::user();
 206         }
 207
 208         $res = XDB::query('SELECT  id
 209                              FROM  newsletter_issues
 210                             WHERE  nlid = {?} AND state = \'sent\'
 211                          ORDER BY  date DESC', $this->id);
 212         $issues = array();
 213         foreach ($res->fetchColumn() as $id) {
 214             $issue = new NLIssue($id, $this, false);
 215             if (!$check_user || $issue->checkUser($user)) {
 216                 $issues[$id] = $issue;
 217             }
 218         }
 219         return $issues;
 220     }
 221
 222     /** Return all issues of this newsletter, including invalid and sent.
 223      * @return An array of (id => NLIssue)
 224      */
 225     public function listAllIssues()
 226     {
 227         $res = XDB::query('SELECT  id
 228                              FROM  newsletter_issues
 229                             WHERE  nlid = {?}
 230                          ORDER BY  FIELD(state, \'pending\', \'new\') DESC, date DESC', $this->id);
 231         $issues = array();
 232         foreach ($res->fetchColumn() as $id) {
 233             $issues[$id] = new NLIssue($id, $this, false);
 234         }
 235         return $issues;
 236     }
 237
 238     /** Return the latest pending issue of the newsletter.
 239      * @p $create Whether to create an empty issue if no pending issue exist.
 240      * @return Either null, or a NL object.
 241      */
 242     public function getPendingIssue($create = false)
 243     {
 244         $res = XDB::query('SELECT  MAX(id)
 245                              FROM  newsletter_issues
 246                             WHERE  nlid = {?} AND state = \'new\'',
 247                             $this->id);
 248         $id = $res->fetchOneCell();
 249         if ($id != null) {
 250             return new NLIssue($id, $this);
 251         } else if ($create) {
 252             $id = $this->createPending();
 253             return new NLIssue($id, $this);
 254         } else {
 255             return null;
 256         }
 257     }
 258
 259     /** Returns a list of either issues or articles corresponding to the search.
 260      * @p $search The searched pattern.
 261      * @p $field The fields where to search, if none given, search in all possible fields.
 262      * @return The list of object found.
 263      */
 264     public function issueSearch($search, $field, $user)
 265     {
 266         $search = XDB::formatWildcards(XDB::WILDCARD_CONTAINS, $search);
 267         if ($field == self::SEARCH_ALL) {
 268             $where = '(title ' . $search . ' OR mail_title ' . $search . ' OR head ' . $search . ' OR signature ' . $search . ')';
 269         } elseif ($field == self::SEARCH_TITLE) {
 270             $where = '(title ' . $search . ' OR mail_title ' . $search . ')';
 271         } else {
 272             $where = $field . $search;
 273         }
 274         $list = XDB::fetchColumn('SELECT  DISTINCT(id)
 275                                     FROM  newsletter_issues
 276                                    WHERE  nlid = {?} AND state = \'sent\' AND ' . $where . '
 277                                 ORDER BY  date DESC',
 278                                  $this->id);
 279
 280         $issues = array();
 281         foreach ($list as $id) {
 282             $issue = new NLIssue($id, $this, false);
 283             if ($issue->checkUser($user)) {
 284                 $issues[] = $issue;
 285             }
 286         }
 287         return $issues;
 288     }
 289
 290     public function articleSearch($search, $field, $user)
 291     {
 292         $search = XDB::formatWildcards(XDB::WILDCARD_CONTAINS, $search);
 293         if ($field == self::SEARCH_ALL) {
 294             $where = '(a.title ' . $search . ' OR a.body ' . $search . ' OR a.append ' . $search . ')';
 295         } else {
 296             $where = 'a.' . $field . $search;
 297         }
 298         $list = XDB::fetchAllAssoc('SELECT  i.short_name, a.aid, i.id, a.title
 299                                       FROM  newsletter_art    AS a
 300                                 INNER JOIN  newsletter_issues AS i ON (a.id = i.id)
 301                                      WHERE  i.nlid = {?} AND i.state = \'sent\' AND ' . $where . '
 302                                   GROUP BY  a.id, a.aid
 303                                   ORDER BY  i.date DESC, a.aid',
 304                                    $this->id);
 305
 306         $articles = array();
 307         foreach ($list as $item) {
 308             $issue = new NLIssue($item['id'], $this, false);
 309             if ($issue->checkUser($user)) {
 310                 $articles[] = $item;
 311             }
 312         }
 313         return $articles;
 314     }
 315
 316     // }}}
 317     // {{{ Subscription related function
 318
 319     /** Unsubscribe a user from this newsletter
 320      * @p $uid UID to unsubscribe from the newsletter; if null, use current user.
 321      * @p $hash True if the uid is actually a hash.
 322      * @return True if the user was successfully unsubscribed.
 323      */
 324     public function unsubscribe($issue_id = null, $uid = null, $hash = false)
 325     {
 326         if (is_null($uid) && $hash) {
 327             // Unable to unsubscribe from an empty hash
 328             return false;
 329         }
 330         $user = is_null($uid) ? S::user()->id() : $uid;
 331         $field = $hash ? 'hash' : 'uid';
 332         $res = XDB::query('SELECT  uid
 333                              FROM  newsletter_ins
 334                             WHERE  nlid = {?} AND ' . $field . ' = {?}',
 335                             $this->id, $user);
 336         if (!$res->numRows()) {
 337             // No subscribed user with that UID/hash
 338             return false;
 339         }
 340         $user = $res->fetchOneCell();
 341
 342         XDB::execute('DELETE FROM  newsletter_ins
 343                             WHERE  nlid = {?} AND uid = {?}',
 344                             $this->id, $user);
 345         if (!is_null($issue_id)) {
 346             XDB::execute('UPDATE  newsletter_issues
 347                              SET  unsubscribe = unsubscribe + 1
 348                            WHERE  id = {?}',
 349                          $id);
 350         }
 351         return true;
 352     }
 353
 354     /** Subscribe a user to a newsletter
 355      * @p $user User to subscribe to the newsletter; if null, use current user.
 356      */
 357     public function subscribe($user = null)
 358     {
 359         if (is_null($user)) {
 360             $user = S::user();
 361         }
 362         if (self::maySubscribe($user)) {
 363             XDB::execute('INSERT IGNORE INTO  newsletter_ins (nlid, uid, last, hash)
 364                                       VALUES  ({?}, {?}, NULL, hash)',
 365                          $this->id, $user->id());
 366         }
 367     }
 368
 369     /** Subscribe a batch of users to a newsletter.
 370      * This skips 'maySubscribe' test.
 371      *
 372      * @p $user_ids Array of user IDs to subscribe to the newsletter.
 373      */
 374     public function bulkSubscribe($user_ids)
 375     {
 376         // TODO: use a 'bulkMaySubscribe'.
 377         XDB::execute('INSERT IGNORE INTO  newsletter_ins (nlid, uid, last, hash)
 378                                   SELECT  {?}, a.uid, NULL, NULL
 379                                     FROM  accounts AS a
 380                                    WHERE  a.uid IN {?}',
 381                      $this->id, $user_ids);
 382     }
 383
 384     /** Retrieve subscription state of a user
 385      * @p $user Target user; if null, use current user.
 386      * @return Boolean: true if the user has subscribed to the NL.
 387      */
 388     public function subscriptionState($user = null)
 389     {
 390         if (is_null($user)) {
 391             $user = S::user();
 392         }
 393         $res = XDB::query('SELECT  1
 394                              FROM  newsletter_ins
 395                             WHERE  nlid = {?} AND uid = {?}',
 396                           $this->id, $user->id());
 397         return ($res->numRows() == 1);
 398     }
 399
 400     /** Get the count of subscribers to the NL.
 401      * @return Number of subscribers.
 402      */
 403     public function subscriberCount($lost = null, $sex = null, $grade = null, $first_promo = null, $last_promo = null)
 404     {
 405         $cond = new PFC_And(new UFC_NLSubscribed($this->id));
 406         if (!is_null($sex)) {
 407             $cond->addChild(new UFC_Sex($sex));
 408         }
 409         if (!is_null($grade)) {
 410             $cond->addChild(new UFC_Promo('>=', $grade, $first_promo));
 411             $cond->addChild(new UFC_Promo('<=', $grade, $last_promo));
 412         }
 413         if (!($lost === null)) {
 414             if ($lost === true) {
 415                 $cond->addChild(new PFC_Not(new UFC_HasEmailRedirect()));
 416             } else {
 417                 $cond->addChild(new UFC_HasEmailRedirect());
 418             }
 419         }
 420         $uf = new UserFilter($cond);
 421         return $uf->getTotalCount();
 422     }
 423
 424     /** Get the count of subscribers with non valid redirection.
 425      */
 426     public function lostSubscriberCount($sex = null)
 427     {
 428         return $this->subscriberCount(true, $sex);
 429     }
 430
 431     /** Get the number of subscribers to the NL whose last received mailing was $last.
 432      * @p $last ID of the issue for which subscribers should be counted.
 433      * @return Number of subscribers
 434      */
 435     public function subscriberCountForLast($last)
 436     {
 437         return XDB::fetchOneCell('SELECT  COUNT(uid)
 438                                     FROM  newsletter_ins
 439                                    WHERE  nlid = {?} AND last = {?}', $this->id, $last);
 440     }
 441
 442     /** Retrieve the list of newsletters a user has subscribed to
 443      * @p $user User whose subscriptions should be retrieved (if null, use session user).
 444      * @return Array of newsletter IDs
 445      */
 446     public static function getUserSubscriptions($user = null)
 447     {
 448         if (is_null($user)) {
 449             $user = S::user();
 450         }
 451         $res = XDB::query('SELECT  nlid
 452                              FROM  newsletter_ins
 453                             WHERE  uid = {?}',
 454                           $user->id());
 455         return $res->fetchColumn();
 456     }
 457
 458     /** Retrieve the UserFilterBuilder for subscribers to this NL.
 459      * This is the place where NL-specific filters may be allowed or prevented.
 460      * @p $envprefix Prefix to use for env fields (cf. UserFilterBuilder)
 461      * @return A UserFilterBuilder object using the given env prefix
 462      */
 463     public function getSubscribersUFB($envprefix = '')
 464     {
 465         require_once 'ufbuilder.inc.php';
 466         return new UFB_NewsLetter($this->criteria, $envprefix);
 467     }
 468
 469     // }}}
 470     // {{{ Permissions related functions
 471
 472     /** For later use: check whether a given user may subscribe to this newsletter.
 473      * @p $user User whose access should be checked
 474      * @return Boolean: whether the user may subscribe to the NL.
 475      */
 476     public function maySubscribe($user = null)
 477     {
 478         return true;
 479     }
 480
 481     /** Whether a given user may edit this newsletter
 482      * @p $uid UID of the user whose perms should be checked (if null, use current user)
 483      * @return Boolean: whether the user may edit the NL
 484      */
 485     public function mayEdit($user = null)
 486     {
 487         if (is_null($user)) {
 488             $user = S::user();
 489         }
 490         if ($user->checkPerms('admin')) {
 491             return true;
 492         }
 493         $res = XDB::query('SELECT  perms
 494                              FROM  group_members
 495                             WHERE  asso_id = {?} AND uid = {?}',
 496                             $this->group_id, $user->id());
 497         return ($res->numRows() && $res->fetchOneCell() == 'admin');
 498     }
 499
 500     /** Whether a given user may submit articles to this newsletter using X.org validation system
 501      * @p $user User whose access should be checked (if null, use current user)
 502      * @return Boolean: whether the user may submit articles
 503      */
 504     public function maySubmit($user = null)
 505     {
 506         // Submission of new articles is only enabled for the X.org NL (and forbidden when viewing issues on X.net)
 507         return ($this->group == self::GROUP_XORG && !isset($GLOBALS['IS_XNET_SITE']));
 508     }
 509
 510     // }}}
 511     // {{{ Display-related functions: cssFile, tplFile, prefix, admin_prefix, admin_links_enabled, automatic_mailings_enabled
 512
 513     /** Get the name of the css file used to display this newsletter.
 514      */
 515     public function cssFile()
 516     {
 517         if ($this->custom_css) {
 518             $base = $this->group;
 519         } else {
 520             $base = self::FORMAT_DEFAULT_GROUP;
 521         }
 522         return 'nl.' . $base . '.css';
 523     }
 524
 525     /** Get the name of the template file used to display this newsletter.
 526      */
 527     public function tplFile()
 528     {
 529         if ($this->custom_css) {
 530             $base = $this->group;
 531         } else {
 532             $base = self::FORMAT_DEFAULT_GROUP;
 533         }
 534         return 'newsletter/nl.' . $base . '.mail.tpl';
 535     }
 536
 537     /** Get the prefix leading to the page for this NL
 538      * Only X.org / AX / X groups may be seen on X.org.
 539      */
 540     public function prefix($enforce_xnet=true, $with_group=true)
 541     {
 542         if (!empty($GLOBALS['IS_XNET_SITE'])) {
 543             if ($with_group) {
 544                 return $this->group . '/nl';
 545             } else {
 546                 return 'nl';
 547             }
 548         }
 549         switch ($this->group) {
 550         case self::GROUP_XORG:
 551             return 'nl';
 552         case self::GROUP_COMMUNITY:
 553             return 'comletter';
 554         case self::GROUP_AX:
 555             return 'ax';
 556         case self::GROUP_EP:
 557             return 'epletter';
 558         case self::GROUP_FX:
 559             return 'fxletter';
 560         default:
 561             // Don't display groups NLs on X.org
 562             assert(!$enforce_xnet);
 563         }
 564     }
 565
 566     /** Get the prefix to use for all 'admin' pages of this NL.
 567      */
 568     public function adminPrefix($enforce_xnet=true, $with_group=true)
 569     {
 570         if (!empty($GLOBALS['IS_XNET_SITE'])) {
 571             if ($with_group) {
 572                 return $this->group . '/admin/nl';
 573             } else {
 574                 return 'admin/nl';
 575             }
 576         }
 577         switch ($this->group) {
 578         case self::GROUP_XORG:
 579             return 'admin/newsletter';
 580         case self::GROUP_COMMUNITY:
 581             return 'comletter/admin';
 582         case self::GROUP_AX:
 583             return 'ax/admin';
 584         case self::GROUP_EP:
 585             return 'epletter/admin';
 586         case self::GROUP_FX:
 587             return 'fxletter/admin';
 588         default:
 589             // Don't display groups NLs on X.org
 590             assert(!$enforce_xnet);
 591         }
 592     }
 593
 594     /** Get the prefix to use for all 'stat' pages of this NL.
 595      */
 596     public function statPrefix($enforce_xnet = true, $with_group = true)
 597     {
 598         if (!empty($GLOBALS['IS_XNET_SITE'])) {
 599             if ($with_group) {
 600                 return $this->group . '/stat/nl';
 601             } else {
 602                 return 'stat/nl';
 603             }
 604         }
 605         switch ($this->group) {
 606         case self::GROUP_XORG:
 607             return 'stat/newsletter';
 608         case self::GROUP_COMMUNITY:
 609             return 'comletter/stat';
 610         case self::GROUP_AX:
 611             return 'ax/stat';
 612         case self::GROUP_EP:
 613             return 'epletter/stat';
 614         case self::GROUP_FX:
 615             return 'fxletter/stat';
 616         default:
 617             // Don't display groups NLs on X.org
 618             assert(!$enforce_xnet);
 619         }
 620     }
 621
 622     /** Get links for nl pages.
 623      */
 624     public function adminLinks()
 625     {
 626         return array(
 627             'index' => array('link' => $this->prefix(), 'title' => 'Archives'),
 628             'admin' => array('link' => $this->adminPrefix(), 'title' => 'Administrer'),
 629             'stats' => array('link' => $this->statPrefix(), 'title' => 'Statistiques')
 630         );
 631     }
 632
 633     /** Hack used to remove "admin" links on X.org page on X.net
 634      * The 'admin' links are enabled for all pages, except for X.org when accessing NL through X.net
 635      */
 636     public function adminLinksEnabled()
 637     {
 638         return ($this->group != self::GROUP_XORG || !isset($GLOBALS['IS_XNET_SITE']));
 639     }
 640
 641     /** Automatic mailings are disabled for X.org NL.
 642      */
 643     public function automaticMailingEnabled()
 644     {
 645         return $this->group != self::GROUP_XORG;
 646     }
 647
 648     public function hasCustomCss()
 649     {
 650         return $this->custom_css;
 651     }
 652
 653     public function canSyncWithGroup()
 654     {
 655         switch ($this->group) {
 656           case self::GROUP_XORG:
 657           case self::GROUP_COMMUNITY:
 658           case self::GROUP_AX:
 659           case self::GROUP_EP:
 660           case self::GROUP_FX:
 661             return false;
 662           default:
 663             return true;
 664         }
 665     }
 666
 667     // }}}
 668 }
 669
 670 // }}}
 671
 672 // {{{ class NLIssue
 673
 674 // A NLIssue is an issue of a given NewsLetter
 675 class NLIssue
 676 {
 677     protected $nlid;  // Id of the newsletter
 678
 679     const STATE_NEW = 'new';  // New, currently being edited
 680     const STATE_PENDING = 'pending';  // Ready for mailing
 681     const STATE_SENT = 'sent';  // Sent
 682
 683     public $nl;  // Related NL
 684
 685     public $id;  // Id of this issue of the newsletter
 686     public $shortname;  // Shortname for this issue
 687     public $title;  // Title of this issue
 688     public $title_mail;  // Title of the email
 689     public $state;  // State of the issue (one of the STATE_ values)
 690     public $sufb;  // Environment to use to generate the UFC through an UserFilterBuilder
 691
 692     public $date;  // Date at which this issue was sent
 693     public $send_before;  // Date at which issue should be sent
 694     public $head;  // Foreword of the issue (or body for letters with no articles)
 695     public $signature;  // Signature of the letter
 696     public $reply_to;  // Adress to reply to the message (can be empty)
 697     public $arts = array();  // Articles of the issue
 698
 699     const BATCH_SIZE = 60;  // Number of emails to send every minute.
 700
 701     // {{{ Constructor, id-related functions
 702
 703     /** Build a NewsLetter.
 704      * @p $id: ID of the issue (unique among all newsletters)
 705      * @p $nl: Optional argument containing an already built NewsLetter object.
 706      */
 707     function __construct($id, $nl = null, $fetch_articles = true)
 708     {
 709         return $this->fetch($id, $nl, $fetch_articles);
 710     }
 711
 712     protected function refresh()
 713     {
 714         return $this->fetch($this->id, $this->nl, false);
 715     }
 716
 717     protected function fetch($id, $nl = null, $fetch_articles = true)
 718     {
 719         // Load this issue
 720         $res = XDB::query('SELECT  nlid, short_name, date, send_before, state, sufb_json,
 721                                    title, mail_title, head, signature, reply_to
 722                              FROM  newsletter_issues
 723                             WHERE  id = {?}',
 724                           $id);
 725         if (!$res->numRows()) {
 726             throw new MailNotFound();
 727         }
 728         $issue = $res->fetchOneAssoc();
 729         if ($nl && $nl->id == $issue['nlid']) {
 730             $this->nl = $nl;
 731         } else {
 732             $this->nl = new NewsLetter($issue['nlid']);
 733         }
 734         $this->id = $id;
 735         $this->nlid        = $issue['nlid'];
 736         $this->shortname   = $issue['short_name'];
 737         $this->date        = $issue['date'];
 738         $this->send_before = $issue['send_before'];
 739         $this->state       = $issue['state'];
 740         $this->title       = $issue['title'];
 741         $this->title_mail  = $issue['mail_title'];
 742         $this->head        = $issue['head'];
 743         $this->signature   = $issue['signature'];
 744         $this->reply_to    = $issue['reply_to'];
 745         $this->sufb        = $this->importJSonStoredUFB($issue['sufb_json']);
 746
 747         if ($fetch_articles) {
 748             $this->fetchArticles();
 749         }
 750     }
 751
 752     protected function fetchArticles($force = false)
 753     {
 754         if (count($this->arts) && !$force) {
 755             return;
 756         }
 757
 758         // Load the articles
 759         $res = XDB::iterRow(
 760             'SELECT  a.title, a.body, a.append, a.aid, a.cid, a.pos
 761                FROM  newsletter_art AS a
 762          INNER JOIN  newsletter_issues AS ni USING(id)
 763          LEFT  JOIN  newsletter_cat AS c ON (a.cid = c.cid)
 764               WHERE  a.id = {?}
 765            ORDER BY  c.pos, a.pos',
 766            $this->id);
 767         while (list($title, $body, $append, $aid, $cid, $pos) = $res->next()) {
 768             $this->arts[$cid][$aid] = new NLArticle($title, $body, $append, $aid, $cid, $pos);
 769         }
 770     }
 771
 772     protected function importJSonStoredUFB($json = null)
 773     {
 774         require_once 'ufbuilder.inc.php';
 775         $ufb = $this->nl->getSubscribersUFB();
 776         if (is_null($json)) {
 777             return new StoredUserFilterBuilder($ufb, new PFC_True());
 778         }
 779         $export = json_decode($json, true);
 780         if (is_null($export)) {
 781             PlErrorReport::report("Invalid json while reading NL {$this->nlid}, issue {$this->id}: failed to import '''{$json}'''.");
 782             return new StoredUserFilterBuilder($ufb, new PFC_True());
 783         }
 784         $sufb = new StoredUserFilterBuilder($ufb);
 785         $sufb->fillFromExport($export);
 786         return $sufb;
 787     }
 788
 789     protected function exportStoredUFBAsJSon()
 790     {
 791         return json_encode($this->sufb->export());
 792     }
 793
 794     public function id()
 795     {
 796         return is_null($this->shortname) ? $this->id : $this->shortname;
 797     }
 798
 799     protected function selectId($where)
 800     {
 801         $res = XDB::query("SELECT  IFNULL(ni.short_name, ni.id)
 802                              FROM  newsletter_issues AS ni
 803                             WHERE  ni.state != 'new' AND ni.nlid = {?} AND ${where}
 804                             LIMIT  1", $this->nl->id);
 805         if ($res->numRows() != 1) {
 806             return null;
 807         }
 808         return $res->fetchOneCell();
 809     }
 810
 811     /** Delete this issue
 812      * @return True if the issue could be deleted, false otherwise.
 813      * Related articles will be deleted through cascading FKs.
 814      * If this issue was the last issue for at least one subscriber, the deletion will be aborted.
 815      */
 816     public function delete()
 817     {
 818         if ($this->state == self::STATE_NEW) {
 819             $res = XDB::query('SELECT  COUNT(*)
 820                                  FROM  newsletter_ins
 821                                 WHERE  last = {?}', $this->id);
 822             if ($res->fetchOneCell() > 0) {
 823                 return false;
 824             }
 825
 826             return XDB::execute('DELETE FROM  newsletter_issues
 827                                        WHERE  id = {?}', $this->id);
 828         } else {
 829             return false;
 830         }
 831     }
 832
 833     /** Schedule a mailing of this NL
 834      * If the 'send_before' field was NULL, it is set to the current time.
 835      * @return Boolean Whether the date could be set (false if trying to schedule an already sent NL)
 836      */
 837     public function scheduleMailing()
 838     {
 839         if ($this->state == self::STATE_NEW) {
 840             $success = XDB::execute('UPDATE  newsletter_issues
 841                                         SET  state = \'pending\', send_before = IFNULL(send_before, NOW())
 842                                       WHERE  id = {?}',
 843                                       $this->id);
 844             if ($success) {
 845                 global $globals;
 846                 $mailer = new PlMailer('newsletter/notify_scheduled.mail.tpl');
 847                 $mailer->assign('issue', $this);
 848                 $mailer->assign('base', $globals->baseurl);
 849                 $mailer->send();
 850                 $this->refresh();
 851             }
 852             return $success;
 853         } else {
 854             return false;
 855         }
 856     }
 857
 858     /** Cancel the scheduled mailing of this NL
 859      * @return Boolean: whether the mailing could be cancelled.
 860      */
 861     public function cancelMailing()
 862     {
 863         if ($this->state == self::STATE_PENDING) {
 864             $success = XDB::execute('UPDATE  newsletter_issues
 865                                         SET  state = \'new\'
 866                                       WHERE  id = {?}', $this->id);
 867             if ($success) {
 868                 $this->refresh();
 869             }
 870             return $success;
 871         } else {
 872             return false;
 873         }
 874     }
 875
 876     /** Helper function for smarty templates: is this issue editable ?
 877      */
 878     public function isEditable()
 879     {
 880         return $this->state == self::STATE_NEW;
 881     }
 882
 883     /** Helper function for smarty templates: is the mailing of this issue scheduled ?
 884      */
 885     public function isPending()
 886     {
 887         return $this->state == self::STATE_PENDING;
 888     }
 889
 890     /** Helper function for smarty templates: has this issue been sent ?
 891      */
 892     public function isSent()
 893     {
 894         return $this->state == self::STATE_SENT;
 895     }
 896
 897     // }}}
 898     // {{{ Navigation
 899
 900     private $id_prev = null;
 901     private $id_next = null;
 902     private $id_last = null;
 903
 904     /** Retrieve ID of the previous issue
 905      * That value, once fetched, is cached in the private $id_prev variable.
 906      * @return ID of the previous issue.
 907      */
 908     public function prev()
 909     {
 910         if (is_null($this->id_prev)) {
 911             $this->id_prev = $this->selectId(XDB::format("ni.id < {?} ORDER BY ni.id DESC", $this->id));
 912         }
 913         return $this->id_prev;
 914     }
 915
 916     /** Retrieve ID of the following issue
 917      * That value, once fetched, is cached in the private $id_next variable.
 918      * @return ID of the following issue.
 919      */
 920     public function next()
 921     {
 922         if (is_null($this->id_next)) {
 923             $this->id_next = $this->selectId(XDB::format("ni.id > {?} ORDER BY ni.id", $this->id));
 924         }
 925         return $this->id_next;
 926     }
 927
 928     /** Retrieve ID of the last issue
 929      * That value, once fetched, is cached in the private $id_last variable.
 930      * @return ID of the last issue.
 931      */
 932     public function last()
 933     {
 934         if (is_null($this->id_last)) {
 935             try {
 936                 $this->id_last = $this->nl->getIssue('last')->id;
 937             } catch (MailNotFound $e) {
 938                 $this->id_last = null;
 939             }
 940         }
 941         return $this->id_last;
 942     }
 943
 944     // }}}
 945     // {{{ Edition, articles
 946
 947     const ERROR_INVALID_REPLY_TO = 'invalid_reply_to';
 948     const ERROR_INVALID_SHORTNAME = 'invalid_shortname';
 949     const ERROR_INVALID_UFC = 'invalid_ufc';
 950     const ERROR_TOO_LONG_UFC = 'too_long_ufc';
 951     const ERROR_SQL_SAVE = 'sql_error';
 952
 953     /** Save the global properties of this NL issue (title&co).
 954      */
 955     public function save()
 956     {
 957         $errors = array();
 958
 959         // Fill the list of fields to update
 960         $fields = array(
 961             'title' => $this->title,
 962             'mail_title' => $this->title_mail,
 963             'head' => $this->head,
 964             'signature' => $this->signature,
 965         );
 966
 967         if (!empty($this->reply_to) && !isvalid_email($this->reply_to)) {
 968             $errors[] = self::ERROR_INVALID_REPLY_TO ;
 969         } else {
 970             $fields['reply_to'] = $this->reply_to;
 971         }
 972
 973         if ($this->isEditable()) {
 974             $fields['date'] = $this->date;
 975             if (!preg_match('/^[-a-z0-9]+$/i', $this->shortname) || is_numeric($this->shortname)) {
 976                 $errors[] = self::ERROR_INVALID_SHORTNAME;
 977             } else {
 978                 $fields['short_name'] = $this->shortname;
 979             }
 980             if ($this->sufb->isValid() || $this->sufb->isEmpty()) {
 981                 $fields['sufb_json'] = json_encode($this->sufb->export()->dict());
 982                 // If sufb_json is too long to be store, we do not store a truncated json and notify the user.
 983                 // The limit is LONGTEXT's one, ie 2^32 = 4294967296.
 984                 if (strlen($fields['sufb_json']) > 4294967295) {
 985                     $errors[] = self::ERROR_TOO_LONG_UFC;
 986                 }
 987             } else {
 988                 $errors[] = self::ERROR_INVALID_UFC;
 989             }
 990
 991             if ($this->nl->automaticMailingEnabled()) {
 992                 $fields['send_before'] = ($this->send_before ? $this->send_before : null);
 993             }
 994         }
 995
 996         if (count($errors)) {
 997             return $errors;
 998         }
 999         $field_sets = array();
1000         foreach ($fields as $key => $value) {
1001             $field_sets[] = XDB::format($key . ' = {?}', $value);
1002         }
1003         XDB::execute('UPDATE  newsletter_issues
1004                          SET  ' . implode(', ', $field_sets) . '
1005                        WHERE  id={?}',
1006                        $this->id);
1007         if (XDB::affectedRows()) {
1008             $this->refresh();
1009         } else {
1010             $errors[] = self::ERROR_SQL_SAVE;
1011         }
1012         return $errors;
1013     }
1014
1015     /** Get an article by number
1016      * @p $aid Article ID (among articles of the issue)
1017      * @return A NLArticle object, or null if there is no article by that number
1018      */
1019     public function getArt($aid)
1020     {
1021         $this->fetchArticles();
1022
1023         foreach ($this->arts as $category => $artlist) {
1024             if (isset($artlist[$aid])) {
1025                 return $artlist[$aid];
1026             }
1027         }
1028         return null;
1029     }
1030
1031     /** Save an article
1032      * @p $a A reference to a NLArticle object (will be modified once saved)
1033      */
1034     public function saveArticle($a)
1035     {
1036         $this->fetchArticles();
1037
1038         // Prevent cid to be 0 (use NULL instead)
1039         $a->cid = ($a->cid == 0) ? null : $a->cid;
1040         if ($a->aid >= 0) {
1041             // Article already exists in DB
1042             XDB::execute('UPDATE  newsletter_art
1043                              SET  cid = {?}, pos = {?}, title = {?}, body = {?}, append = {?}
1044                            WHERE  id = {?} AND aid = {?}',
1045                          $a->cid, $a->pos, $a->title, $a->body, $a->append, $this->id, $a->aid);
1046         } else {
1047             // New article
1048             XDB::startTransaction();
1049             list($aid, $pos) = XDB::fetchOneRow('SELECT  MAX(aid) AS aid, MAX(pos) AS pos
1050                                                    FROM  newsletter_art AS a
1051                                                   WHERE  a.id = {?}',
1052                                                 $this->id);
1053             $a->aid = ++$aid;
1054             $a->pos = ($a->pos ? $a->pos : ++$pos);
1055             XDB::execute('INSERT INTO  newsletter_art (id, aid, cid, pos, title, body, append)
1056                                VALUES  ({?}, {?}, {?}, {?}, {?}, {?}, {?})',
1057                          $this->id, $a->aid, $a->cid, $a->pos,
1058                          $a->title, $a->body, $a->append);
1059             XDB::commit();
1060         }
1061         // Update local ID of article
1062         $this->arts[$a->aid] = $a;
1063     }
1064
1065     /** Delete an article by its ID
1066      * @p $aid ID of the article to delete
1067      */
1068     public function delArticle($aid)
1069     {
1070         $this->fetchArticles();
1071
1072         XDB::execute('DELETE FROM newsletter_art WHERE id={?} AND aid={?}', $this->id, $aid);
1073         foreach ($this->arts as $key=>$art) {
1074             unset($this->arts[$key][$aid]);
1075         }
1076     }
1077
1078     // }}}
1079     // {{{ Display
1080
1081     /** Retrieve the title of this issue
1082      * @p $mail Whether we want the normal title or the email subject
1083      * @return Title of the issue
1084      */
1085     public function title($mail = false)
1086     {
1087         return $mail ? $this->title_mail : $this->title;
1088     }
1089
1090     /** Retrieve the head of this issue
1091      * @p $user User for <dear> customization (may be null: no customization)
1092      * @p $type Either 'text' or 'html'
1093      * @return Formatted head of the issue.
1094      */
1095     public function head($user = null, $type = 'text')
1096     {
1097         if (is_null($user)) {
1098             return $this->head;
1099         } else {
1100             $head = $this->head;
1101             $head = str_replace(array('<cher>', '<prenom>', '<nom>'),
1102                                 array(($user->isFemale() ? 'Chère' : 'Cher'), $user->displayName(), ''),
1103                                 $head);
1104             return format_text($head, $type, 2, 64);
1105         }
1106     }
1107
1108     /** Retrieve the formatted signature of this issue.
1109      */
1110     public function signature($type = 'text')
1111     {
1112         return format_text($this->signature, $type, 2, 64);
1113     }
1114
1115     /** Get the title of a given category
1116      * @p $cid ID of the category to retrieve
1117      * @return Name of the category
1118      */
1119     public function category($cid)
1120     {
1121         return $this->nl->cats[$cid];
1122     }
1123
1124     /** Add required data to the given $page for proper CSS display
1125      * @p $page Smarty object
1126      * @return Either 'true' (if CSS was added to a page) or the raw CSS to add (when $page is null)
1127      */
1128     public function css($page = null)
1129     {
1130         if (!is_null($page)) {
1131             $page->addCssLink($this->nl->cssFile());
1132             return true;
1133         } else {
1134             $css = file_get_contents(dirname(__FILE__) . '/../htdocs/css/' . $this->nl->cssFile());
1135             return preg_replace('@/\*.*?\*/@us', '', $css);
1136         }
1137     }
1138
1139     /** Set up a smarty page for a 'text' mode render of the issue
1140      * @p $page Smarty object (using the $this->nl->tplFile() template)
1141      * @p $user User to use when rendering the template
1142      */
1143     public function toText($page, $user)
1144     {
1145         $this->fetchArticles();
1146
1147         $this->css($page);
1148         $page->assign('prefix', null);
1149         $page->assign('is_mail', false);
1150         $page->assign('mail_part', 'text');
1151         $page->assign('user', $user);
1152         $page->assign('hash', null);
1153         $this->assignData($page);
1154     }
1155
1156     /** Set up a smarty page for a 'html' mode render of the issue
1157      * @p $page Smarty object (using the $this->nl->tplFile() template)
1158      * @p $user User to use when rendering the template
1159      */
1160     public function toHtml($page, $user)
1161     {
1162         $this->fetchArticles();
1163
1164         $this->css($page);
1165         $page->assign('prefix', $this->nl->prefix() . '/show/' . $this->id());
1166         $page->assign('is_mail', false);
1167         $page->assign('mail_part', 'html');
1168         $page->assign('user', $user);
1169         $page->assign('hash', null);
1170         $this->assignData($page);
1171     }
1172
1173     /** Set all 'common' data for the page (those which are required for both web and email rendering)
1174      * @p $smarty Smarty object (e.g page) which should be filled
1175      */
1176     protected function assignData($smarty)
1177     {
1178         $this->fetchArticles();
1179
1180         $smarty->assign_by_ref('issue', $this);
1181         $smarty->assign_by_ref('nl', $this->nl);
1182     }
1183
1184     // }}}
1185     // {{{ Mailing
1186
1187     /** Check whether this issue is empty
1188      * An issue is empty if the email has no title (or the default one), or no articles and an empty head.
1189      */
1190     public function isEmpty()
1191     {
1192         return $this->title_mail == '' || $this->title_mail == 'to be continued' || (count($this->arts) == 0 && strlen($this->head) == 0);
1193     }
1194
1195     /** Retrieve the 'Send before' date, in a clean format.
1196      */
1197     public function getSendBeforeDate()
1198     {
1199         return strftime('%Y-%m-%d', strtotime($this->send_before));
1200     }
1201
1202     /** Retrieve the 'Send before' time (i.e hour), in a clean format.
1203      */
1204     public function getSendBeforeTime()
1205     {
1206         return strtotime($this->send_before);
1207     }
1208
1209     /** Create a hash based on some additional data
1210      * $line Line-specific data (to prevent two hashes generated at the same time to be the same)
1211      */
1212     protected static function createHash($line)
1213     {
1214         $hash = implode(time(), $line) . rand();
1215         $hash = md5($hash);
1216         return $hash;
1217     }
1218
1219     /** Send this issue to the given user, reusing an existing hash if provided.
1220      * @p $user User to whom the issue should be mailed
1221      * @p $hash Optional hash to use in the 'unsubscribe' link; if null, another one will be generated.
1222      */
1223     public function sendTo($user, $hash = null)
1224     {
1225         $this->fetchArticles();
1226
1227         if (is_null($hash)) {
1228             $hash = XDB::fetchOneCell("SELECT  hash
1229                                          FROM  newsletter_ins
1230                                         WHERE  uid = {?} AND nlid = {?}",
1231                                       $user->id(), $this->nl->id);
1232         }
1233         if (is_null($hash)) {
1234             $hash = self::createHash(array($user->displayName(), $user->fullName(),
1235                                        $user->isFemale(), $user->isEmailFormatHtml(),
1236                                        rand(), "X.org rulez"));
1237             XDB::execute("UPDATE  newsletter_ins as ni
1238                              SET  ni.hash = {?}
1239                            WHERE  ni.uid = {?} AND ni.nlid = {?}",
1240                          $hash, $user->id(), $this->nl->id);
1241         }
1242
1243         $mailer = new PlMailer($this->nl->tplFile());
1244         $this->assignData($mailer);
1245         $mailer->assign('is_mail', true);
1246         $mailer->assign('user', $user);
1247         $mailer->assign('prefix',  null);
1248         $mailer->assign('hash',    $hash);
1249         if (!empty($this->reply_to)) {
1250             $mailer->addHeader('Reply-To', $this->reply_to);
1251         }
1252         $mailer->sendTo($user);
1253     }
1254
1255     /** Select a subset of subscribers which should receive the newsletter.
1256      * NL-Specific selections (not yet received, is subscribed) are done when sending.
1257      * @return A PlFilterCondition.
1258      */
1259     protected function getRecipientsUFC()
1260     {
1261         return $this->sufb->getUFC();
1262     }
1263
1264     /** Check whether a given user may see this issue.
1265      * @p $user User whose access should be checked
1266      * @return Whether he may access the issue
1267      */
1268     public function checkUser($user = null)
1269     {
1270         if ($user == null) {
1271             $user = S::user();
1272         }
1273         $uf = new UserFilter($this->getRecipientsUFC());
1274         return $uf->checkUser($user);
1275     }
1276
1277     /** Sent this issue to all valid recipients
1278      * @return Number of issues sent
1279      */
1280     public function sendToAll()
1281     {
1282         $this->fetchArticles();
1283
1284         XDB::execute('UPDATE  newsletter_issues
1285                          SET  state = \'sent\', date=CURDATE()
1286                        WHERE  id = {?}',
1287                        $this->id);
1288
1289         $ufc = new PFC_And($this->getRecipientsUFC(), new UFC_NLSubscribed($this->nl->id, $this->id), new UFC_HasValidEmail());
1290         $uf = new UserFilter($ufc, array(new UFO_IsAdmin(true), new UFO_Uid()));
1291         $limit = new PlLimit(self::BATCH_SIZE);
1292         $global_sent = array();
1293
1294         while (true) {
1295             $sent = array();
1296             $users = $uf->getUsers($limit);
1297             if (count($users) == 0) {
1298                 break;
1299             }
1300             foreach ($users as $user) {
1301                 if (array_key_exists($user->id(), $global_sent)) {
1302                     Platal::page()->kill('Sending the same newsletter issue ' . $this->id . ' to user ' . $user->id() . ' twice, something must be wrong.');
1303                 }
1304                 $sent[] = $user->id();
1305                 $global_sent[$user->id()] = true;
1306                 $this->sendTo($user, $hash);
1307             }
1308             XDB::execute("UPDATE  newsletter_ins
1309                              SET  last = {?}
1310                            WHERE  nlid = {?} AND uid IN {?}", $this->id, $this->nl->id, $sent);
1311
1312             sleep(60);
1313         }
1314         return count($global_sent);
1315     }
1316
1317     // }}}
1318 }
1319
1320 // }}}
1321 // {{{ class NLArticle
1322
1323 class NLArticle
1324 {
1325     // Maximum number of lines per article
1326     const MAX_LINES_PER_ARTICLE = 8;
1327     const MAX_CHARACTERS_PER_LINE = 68;
1328
1329     // {{{ properties
1330
1331     public $aid;
1332     public $cid;
1333     public $pos;
1334     public $title;
1335     public $body;
1336     public $append;
1337
1338     // }}}
1339     // {{{ constructor
1340
1341     function __construct($title='', $body='', $append='', $aid=-1, $cid=0, $pos=0)
1342     {
1343         $this->body   = $body;
1344         $this->title  = $title;
1345         $this->append = $append;
1346         $this->aid    = $aid;
1347         $this->cid    = $cid;
1348         $this->pos    = $pos;
1349     }
1350
1351     // }}}
1352     // {{{ function title()
1353
1354     public function title()
1355     { return trim($this->title); }
1356
1357     // }}}
1358     // {{{ function body()
1359
1360     public function body()
1361     { return trim($this->body); }
1362
1363     // }}}
1364     // {{{ function append()
1365
1366     public function append()
1367     { return trim($this->append); }
1368
1369     // }}}
1370     // {{{ function toText()
1371
1372     public function toText($hash = null, $login = null)
1373     {
1374         $title = '*'.$this->title().'*';
1375         $body = MiniWiki::WikiToText($this->body, true);
1376         $app = MiniWiki::WikiToText($this->append, false, 4);
1377         $text = trim("$title\n\n$body\n\n$app")."\n";
1378         if (!is_null($hash) && !is_null($login)) {
1379             $text = str_replace('%HASH%', "$hash/$login", $text);
1380         } else {
1381             $text = str_replace('%HASH%', '', $text);
1382         }
1383         return $text;
1384     }
1385
1386     // }}}
1387     // {{{ function toHtml()
1388
1389     public function toHtml($hash = null, $login = null)
1390     {
1391         $title = "<h2 class='xorg_nl'><a id='art{$this->aid}'></a>".pl_entities($this->title()).'</h2>';
1392         $body  = MiniWiki::WikiToHTML($this->body);
1393         $app   = MiniWiki::WikiToHTML($this->append);
1394
1395         $art   = "$title\n";
1396         $art  .= "<div class='art'>\n$body\n";
1397         if ($app) {
1398             $art .= "<div class='app'>$app</div>";
1399         }
1400         $art  .= "</div>\n";
1401         if (!is_null($hash) && !is_null($login)) {
1402             $art = str_replace('%HASH%', "$hash/$login", $art);
1403         } else {
1404             $art = str_replace('%HASH%', '', $art);
1405         }
1406
1407         return $art;
1408     }
1409
1410     // }}}
1411     // {{{ function check()
1412
1413     public function check()
1414     {
1415         $rest = $this->remain();
1416
1417         return $rest['remaining_lines'] >= 0;
1418     }
1419
1420     // }}}
1421     // {{{ function remain()
1422
1423     public function remain()
1424     {
1425         $text  = MiniWiki::WikiToText($this->body);
1426         $array = explode("\n", wordwrap($text, self::MAX_CHARACTERS_PER_LINE));
1427         $lines_count = 0;
1428         foreach ($array as $line) {
1429             if (trim($line) != '') {
1430                 ++$lines_count;
1431             }
1432         }
1433
1434         return array(
1435             'remaining_lines'                    => self::MAX_LINES_PER_ARTICLE - $lines_count,
1436             'remaining_characters_for_last_line' => self::MAX_CHARACTERS_PER_LINE - strlen($array[count($array) - 1])
1437        );
1438     }
1439     // }}}
1440     // {{{ function parseUrlsFromArticle()
1441
1442     protected function parseUrlsFromArticle()
1443     {
1444         $email_regex = '([a-z0-9.\-+_\$]+@([\-.+_]?[a-z0-9])+)';
1445         $url_regex = '((https?|ftp)://[a-zA-Z0-9._%#+/?=&~-]+)';
1446         $regex = '{' . $email_regex . '|' . $url_regex . '}i';
1447
1448         $matches = array();
1449         $body_matches = array();
1450         if (preg_match_all($regex, $this->body(), $body_matches)) {
1451             $matches = array_merge($matches, $body_matches[0]);
1452         }
1453
1454         $append_matches = array();
1455         if (preg_match_all($regex, $this->append(), $append_matches)) {
1456             $matches = array_merge($matches, $append_matches[0]);
1457         }
1458
1459         return $matches;
1460     }
1461
1462     // }}}
1463     // {{{ function getLinkIps()
1464
1465     public function getLinkIps(&$blacklist_host_resolution_count)
1466     {
1467         $matches = $this->parseUrlsFromArticle();
1468         $article_ips = array();
1469
1470         if (!empty($matches)) {
1471             global $globals;
1472
1473             foreach ($matches as $match) {
1474                 $host = parse_url($match, PHP_URL_HOST);
1475                 if ($host == '') {
1476                     list(, $host) = explode('@', $match);
1477                 }
1478
1479                 if ($blacklist_host_resolution_count >= $globals->mail->blacklist_host_resolution_limit) {
1480                    break;
1481                 }
1482
1483                 if (!preg_match('/^(' . str_replace(' ', '|', $globals->mail->domain_whitelist) . ')$/i', $host)) {
1484                     $article_ips = array_merge($article_ips, array(gethostbyname($host) => $host));
1485                     ++$blacklist_host_resolution_count;
1486                 }
1487             }
1488         }
1489
1490         return $article_ips;
1491     }
1492
1493     // }}}
1494 }
1495
1496 // }}}
1497
1498 // {{{ Functions
1499
1500 function format_text($input, $format, $indent = 0, $width = 68)
1501 {
1502     if ($format == 'text') {
1503         return MiniWiki::WikiToText($input, true, $indent, $width, "title");
1504     }
1505     return MiniWiki::WikiToHTML($input, "title");
1506 }
1507
1508 // function enriched_to_text($input,$html=false,$just=false,$indent=0,$width=68)
1509
1510 // }}}
1511
1512 // vim:set et sw=4 sts=4 sws=4 enc=utf-8:
1513 ?>