src/Module/Conversation/Timeline.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2023, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Module\Conversation;
  23
  24 use Friendica\App;
  25 use Friendica\App\Mode;
  26 use Friendica\BaseModule;
  27 use Friendica\Content\Conversation\Collection\Timelines;
  28 use Friendica\Content\Conversation\Entity\Timeline as TimelineEntity;
  29 use Friendica\Core\Cache\Capability\ICanCache;
  30 use Friendica\Core\Cache\Enum\Duration;
  31 use Friendica\Core\Config\Capability\IManageConfigValues;
  32 use Friendica\Core\L10n;
  33 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
  34 use Friendica\Core\Renderer;
  35 use Friendica\Core\Session\Capability\IHandleUserSessions;
  36 use Friendica\Model\Contact;
  37 use Friendica\Model\User;
  38 use Friendica\Database\Database;
  39 use Friendica\Database\DBA;
  40 use Friendica\Model\Item;
  41 use Friendica\Model\Post;
  42 use Friendica\Module\Response;
  43 use Friendica\Util\DateTimeFormat;
  44 use Friendica\Util\Profiler;
  45 use Psr\Log\LoggerInterface;
  46
  47 class Timeline extends BaseModule
  48 {
  49         /** @var string */
  50         protected $selectedTab;
  51         /** @var mixed */
  52         protected $minId;
  53         /** @var mixed */
  54         protected $maxId;
  55         /** @var string */
  56         protected $accountTypeString;
  57         /** @var int */
  58         protected $accountType;
  59         /** @var int */
  60         protected $itemUriId;
  61         /** @var int */
  62         protected $itemsPerPage;
  63         /** @var bool */
  64         protected $noSharer;
  65         /** @var bool */
  66         protected $force;
  67
  68         /** @var App\Mode $mode */
  69         protected $mode;
  70         /** @var IHandleUserSessions */
  71         protected $session;
  72         /** @var Database */
  73         protected $database;
  74         /** @var IManagePersonalConfigValues */
  75         protected $pConfig;
  76         /** @var IManageConfigValues The config */
  77         protected $config;
  78         /** @var ICanCache */
  79         protected $cache;
  80
  81         public function __construct(Mode $mode, IHandleUserSessions $session, Database $database, IManagePersonalConfigValues $pConfig, IManageConfigValues $config, ICanCache $cache, L10n $l10n, App\BaseURL $baseUrl, App\Arguments $args, LoggerInterface $logger, Profiler $profiler, Response $response, array $server, array $parameters = [])
  82         {
  83                 parent::__construct($l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
  84
  85                 $this->mode     = $mode;
  86                 $this->session  = $session;
  87                 $this->database = $database;
  88                 $this->pConfig  = $pConfig;
  89                 $this->config   = $config;
  90                 $this->cache    = $cache;
  91         }
  92
  93         /**
  94          * Computes module parameters from the request and local configuration
  95          *
  96          * @throws HTTPException\BadRequestException
  97          * @throws HTTPException\ForbiddenException
  98          */
  99         protected function parseRequest(array $request)
 100         {
 101                 $this->logger->debug('Got request', $request);
 102                 $this->selectedTab = $this->parameters['content'] ?? $request['channel'] ?? '';
 103
 104                 $this->accountTypeString = $request['accounttype'] ?? $this->parameters['accounttype'] ?? '';
 105                 $this->accountType       = User::getAccountTypeByString($this->accountTypeString);
 106
 107                 if ($this->mode->isMobile()) {
 108                         $this->itemsPerPage = $this->pConfig->get(
 109                                 $this->session->getLocalUserId(),
 110                                 'system',
 111                                 'itemspage_mobile_network',
 112                                 $this->config->get('system', 'itemspage_network_mobile')
 113                         );
 114                 } else {
 115                         $this->itemsPerPage = $this->pConfig->get(
 116                                 $this->session->getLocalUserId(),
 117                                 'system',
 118                                 'itemspage_network',
 119                                 $this->config->get('system', 'itemspage_network')
 120                         );
 121                 }
 122
 123                 if (!empty($request['item'])) {
 124                         $item            = Post::selectFirst(['parent', 'parent-uri-id'], ['id' => $request['item']]);
 125                         $this->itemUriId = $item['parent-uri-id'] ?? 0;
 126                 } else {
 127                         $this->itemUriId = 0;
 128                 }
 129
 130                 $this->minId = $request['min_id'] ?? null;
 131                 $this->maxId = $request['max_id'] ?? null;
 132
 133                 $this->noSharer = !empty($request['no_sharer']);
 134                 $this->force    = !empty($request['force']);
 135         }
 136
 137         protected function getNoSharerWidget(string $base): string
 138         {
 139                 $path = $this->selectedTab;
 140                 if (!empty($this->accountTypeString)) {
 141                         $path .= '/' . $this->accountTypeString;
 142                 }
 143                 $query_parameters = [];
 144
 145                 if (!empty($this->minId)) {
 146                         $query_parameters['min_id'] = $this->minId;
 147                 }
 148                 if (!empty($this->maxId)) {
 149                         $query_parameters['max_id'] = $this->maxId;
 150                 }
 151
 152                 $path_all       = $path . (!empty($query_parameters) ? '?' . http_build_query($query_parameters) : '');
 153                 $path_no_sharer = $path . '?' . http_build_query(array_merge($query_parameters, ['no_sharer' => true]));
 154                 return Renderer::replaceMacros(Renderer::getMarkupTemplate('widget/community_sharer.tpl'), [
 155                         '$title'           => $this->l10n->t('Own Contacts'),
 156                         '$path_all'        => $path_all,
 157                         '$path_no_sharer'  => $path_no_sharer,
 158                         '$no_sharer'       => $this->noSharer,
 159                         '$all'             => $this->l10n->t('Include'),
 160                         '$no_sharer_label' => $this->l10n->t('Hide'),
 161                         '$base'            => $base,
 162                 ]);
 163         }
 164
 165         protected function getTabArray(Timelines $timelines, string $prefix, string $parameter = ''): array
 166         {
 167                 $tabs = [];
 168
 169                 foreach ($timelines as $tab) {
 170                         if (is_null($tab->path) && !empty($parameter)) {
 171                                 $path = $prefix . '?' . http_build_query([$parameter => $tab->code]);
 172                         } else {
 173                                 $path = $tab->path ?? $prefix . '/' . $tab->code;
 174                         }
 175                         $tabs[$tab->code] = [
 176                                 'label'     => $tab->label,
 177                                 'url'       => $path,
 178                                 'sel'       => $this->selectedTab == $tab->code ? 'active' : '',
 179                                 'title'     => $tab->description,
 180                                 'id'        => $prefix . '-' . $tab->code . '-tab',
 181                                 'accesskey' => $tab->accessKey,
 182                         ];
 183                 }
 184                 return $tabs;
 185         }
 186
 187         /**
 188          * Database query for the channel page
 189          *
 190          * @return array
 191          * @throws \Exception
 192          */
 193         protected function getChannelItems()
 194         {
 195                 $items = $this->getRawChannelItems();
 196
 197                 $contacts = $this->database->selectToArray('user-contact', ['cid'], ['channel-frequency' => Contact\User::FREQUENCY_REDUCED, 'cid' => array_column($items, 'owner-id')]);
 198                 $reduced  = array_column($contacts, 'cid');
 199
 200                 $maxpostperauthor = $this->config->get('channel', 'max_posts_per_author');
 201
 202                 if ($maxpostperauthor != 0) {
 203                         $count          = 1;
 204                         $owner_posts    = [];
 205                         $selected_items = [];
 206
 207                         while (count($selected_items) < $this->itemsPerPage && ++$count < 50 && count($items) > 0) {
 208                                 $maxposts = round((count($items) / $this->itemsPerPage) * $maxpostperauthor);
 209                                 $minId = $items[array_key_first($items)]['created'];
 210                                 $maxId = $items[array_key_last($items)]['created'];
 211
 212                                 foreach ($items as $item) {
 213                                         if (!in_array($item['owner-id'], $reduced)) {
 214                                                 continue;
 215                                         }
 216                                         $owner_posts[$item['owner-id']][$item['uri-id']] = (($item['comments'] * 100) + $item['activities']);
 217                                 }
 218                                 foreach ($owner_posts as $posts) {
 219                                         if (count($posts) <= $maxposts) {
 220                                                 continue;
 221                                         }
 222                                         asort($posts);
 223                                         while (count($posts) > $maxposts) {
 224                                                 $uri_id = array_key_first($posts);
 225                                                 unset($posts[$uri_id]);
 226                                                 unset($items[$uri_id]);
 227                                         }
 228                                 }
 229                                 $selected_items = array_merge($selected_items, $items);
 230
 231                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 232                                 // sorted in chronologically decreasing order
 233                                 if (!empty($this->minId)) {
 234                                         $this->minId = $minId;
 235                                 } else {
 236                                         // In any other case, the lookup continues backwards in time
 237                                         $this->maxId = $maxId;
 238                                 }
 239
 240                                 if (count($selected_items) < $this->itemsPerPage) {
 241                                         $items = $this->getRawChannelItems();
 242                                 }
 243                         }
 244                 } else {
 245                         $selected_items = $items;
 246                 }
 247
 248                 $condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => array_column($selected_items, 'uri-id')];
 249                 $this->setItemsSeenByCondition($condition);
 250
 251                 return $selected_items;
 252         }
 253
 254         /**
 255          * Database query for the channel page
 256          *
 257          * @return array
 258          * @throws \Exception
 259          */
 260         private function getRawChannelItems()
 261         {
 262                 $uid = $this->session->getLocalUserId();
 263
 264                 if ($this->selectedTab == TimelineEntity::WHATSHOT) {
 265                         if (!is_null($this->accountType)) {
 266                                 $condition = ["(`comments` > ? OR `activities` > ?) AND `contact-type` = ?", $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), $this->accountType];
 267                         } else {
 268                                 $condition = ["(`comments` > ? OR `activities` > ?) AND `contact-type` != ?", $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), Contact::TYPE_COMMUNITY];
 269                         }
 270                 } elseif ($this->selectedTab == TimelineEntity::FORYOU) {
 271                         $cid = Contact::getPublicIdByUserId($uid);
 272
 273                         $condition = [
 274                                 "(`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `relation-cid` = ? AND `relation-thread-score` > ?) OR
 275                                 ((`comments` >= ? OR `activities` >= ?) AND `owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ?)) OR
 276                                 (`owner-id` IN (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND (`notify_new_posts` OR `channel-frequency` = ?))))",
 277                                 $cid, $this->getMedianRelationThreadScore($cid, 4), $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), $cid,
 278                                 $uid, Contact\User::FREQUENCY_ALWAYS
 279                         ];
 280                 } elseif ($this->selectedTab == TimelineEntity::FOLLOWERS) {
 281                         $condition = ["`owner-id` IN (SELECT `pid` FROM `account-user-view` WHERE `uid` = ? AND `rel` = ?)", $uid, Contact::FOLLOWER];
 282                 } elseif ($this->selectedTab == TimelineEntity::SHARERSOFSHARERS) {
 283                         $cid = Contact::getPublicIdByUserId($uid);
 284
 285                         // @todo Suggest posts from contacts that are followed most by our followers
 286                         $condition = [
 287                                 "`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `last-interaction` > ?
 288                                 AND `relation-cid` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ? AND `relation-thread-score` >= ?)
 289                                 AND NOT `cid` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ?))",
 290                                 DateTimeFormat::utc('now - ' . $this->config->get('channel', 'sharer_interaction_days') . ' day'), $cid, $this->getMedianRelationThreadScore($cid, 4), $cid
 291                         ];
 292                 } elseif ($this->selectedTab == TimelineEntity::IMAGE) {
 293                         $condition = ["`media-type` & ?", 1];
 294                 } elseif ($this->selectedTab == TimelineEntity::VIDEO) {
 295                         $condition = ["`media-type` & ?", 2];
 296                 } elseif ($this->selectedTab == TimelineEntity::AUDIO) {
 297                         $condition = ["`media-type` & ?", 4];
 298                 } elseif ($this->selectedTab == TimelineEntity::LANGUAGE) {
 299                         $condition = ["JSON_EXTRACT(JSON_KEYS(language), '$[0]') = ?", $this->l10n->convertCodeForLanguageDetection(User::getLanguageCode($uid))];
 300                 }
 301
 302                 if ($this->selectedTab != TimelineEntity::LANGUAGE) {
 303                         $condition = $this->addLanguageCondition($uid, $condition);
 304                 }
 305
 306                 $condition = DBA::mergeConditions($condition, ["NOT EXISTS(SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `post-engagement`.`owner-id` AND (`ignored` OR `blocked` OR `collapsed` OR `is-blocked` OR `channel-frequency` = ?))", $uid, Contact\User::FREQUENCY_NEVER]);
 307
 308                 if (($this->selectedTab != TimelineEntity::WHATSHOT) && !is_null($this->accountType)) {
 309                         $condition = DBA::mergeConditions($condition, ['contact-type' => $this->accountType]);
 310                 }
 311
 312                 $params = ['order' => ['created' => true], 'limit' => $this->itemsPerPage];
 313
 314                 if (!empty($this->itemUriId)) {
 315                         $condition = DBA::mergeConditions($condition, ['uri-id' => $this->itemUriId]);
 316                 } else {
 317                         if ($this->noSharer) {
 318                                 $condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `post-user`.`uid` = ? AND `post-user`.`uri-id` = `post-engagement`.`uri-id`)", $this->session->getLocalUserId()]);
 319                         }
 320
 321                         if (isset($this->maxId)) {
 322                                 $condition = DBA::mergeConditions($condition, ["`created` < ?", $this->maxId]);
 323                         }
 324
 325                         if (isset($this->minId)) {
 326                                 $condition = DBA::mergeConditions($condition, ["`created` > ?", $this->minId]);
 327
 328                                 // Previous page case: we want the items closest to min_id but for that we need to reverse the query order
 329                                 if (!isset($this->maxId)) {
 330                                         $params['order']['created'] = false;
 331                                 }
 332                         }
 333                 }
 334
 335                 $items = [];
 336                 $result = $this->database->select('post-engagement', ['uri-id', 'created', 'owner-id', 'comments', 'activities'], $condition, $params);
 337                 while ($item = $this->database->fetch($result)) {
 338                         $items[$item['uri-id']] = $item;
 339                 }
 340                 $this->database->close($result);
 341
 342                 if (empty($items)) {
 343                         return [];
 344                 }
 345
 346                 // Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
 347                 if (empty($this->itemUriId) && isset($this->minId) && !isset($this->maxId)) {
 348                         $items = array_reverse($items, true);
 349                 }
 350
 351                 $condition = ['unseen' => true, 'uid' => $uid, 'parent-uri-id' => array_column($items, 'uri-id')];
 352                 $this->setItemsSeenByCondition($condition);
 353
 354                 return $items;
 355         }
 356
 357         private function addLanguageCondition(int $uid, array $condition): array
 358         {
 359                 $conditions = [];
 360                 $languages  = $this->pConfig->get($uid, 'channel', 'languages', [User::getLanguageCode($uid)]);
 361                 $languages  = $this->l10n->convertForLanguageDetection($languages);
 362                 foreach ($languages as $language) {
 363                         $conditions[] = "JSON_EXTRACT(JSON_KEYS(language), '$[0]') = ?";
 364                         $condition[]  = $language;
 365                 }
 366                 if (!empty($conditions)) {
 367                         $condition[0] .= " AND (`language` IS NULL OR " . implode(' OR ', $conditions) . ")";
 368                 }
 369                 return $condition;
 370         }
 371
 372         private function getMedianComments(int $uid, int $divider): int
 373         {
 374                 $languages = $this->pConfig->get($uid, 'channel', 'languages', [User::getLanguageCode($uid)]);
 375                 $cache_key = 'Channel:getMedianComments:' . $divider . ':' . implode(':', $languages);
 376                 $comments  = $this->cache->get($cache_key);
 377                 if (!empty($comments)) {
 378                         return $comments;
 379                 }
 380
 381                 $condition = ["`contact-type` != ? AND `comments` > ?", Contact::TYPE_COMMUNITY, 0];
 382                 $condition = $this->addLanguageCondition($uid, $condition);
 383
 384                 $limit    = $this->database->count('post-engagement', $condition) / $divider;
 385                 $post     = $this->database->selectToArray('post-engagement', ['comments'], $condition, ['order' => ['comments' => true], 'limit' => [$limit, 1]]);
 386                 $comments = $post[0]['comments'] ?? 0;
 387                 if (empty($comments)) {
 388                         return 0;
 389                 }
 390
 391                 $this->cache->set($cache_key, $comments, Duration::HALF_HOUR);
 392                 $this->logger->debug('Calculated median comments', ['divider' => $divider, 'languages' => $languages, 'median' => $comments]);
 393                 return $comments;
 394         }
 395
 396         private function getMedianActivities(int $uid, int $divider): int
 397         {
 398                 $languages  = $this->pConfig->get($uid, 'channel', 'languages', [User::getLanguageCode($uid)]);
 399                 $cache_key  = 'Channel:getMedianActivities:' . $divider . ':' . implode(':', $languages);
 400                 $activities = $this->cache->get($cache_key);
 401                 if (!empty($activities)) {
 402                         return $activities;
 403                 }
 404
 405                 $condition = ["`contact-type` != ? AND `activities` > ?", Contact::TYPE_COMMUNITY, 0];
 406                 $condition = $this->addLanguageCondition($uid, $condition);
 407
 408                 $limit      = $this->database->count('post-engagement', $condition) / $divider;
 409                 $post       = $this->database->selectToArray('post-engagement', ['activities'], $condition, ['order' => ['activities' => true], 'limit' => [$limit, 1]]);
 410                 $activities = $post[0]['activities'] ?? 0;
 411                 if (empty($activities)) {
 412                         return 0;
 413                 }
 414
 415                 $this->cache->set($cache_key, $activities, Duration::HALF_HOUR);
 416                 $this->logger->debug('Calculated median activities', ['divider' => $divider, 'languages' => $languages, 'median' => $activities]);
 417                 return $activities;
 418         }
 419
 420         private function getMedianRelationThreadScore(int $cid, int $divider): int
 421         {
 422                 $cache_key = 'Channel:getThreadScore:' . $cid . ':' . $divider;
 423                 $score     = $this->cache->get($cache_key);
 424                 if (!empty($score)) {
 425                         return $score;
 426                 }
 427
 428                 $condition = ["`relation-cid` = ? AND `relation-thread-score` > ?", $cid, 0];
 429
 430                 $limit    = $this->database->count('contact-relation', $condition) / $divider;
 431                 $relation = $this->database->selectToArray('contact-relation', ['relation-thread-score'], $condition, ['order' => ['relation-thread-score' => true], 'limit' => [$limit, 1]]);
 432                 $score    = $relation[0]['relation-thread-score'] ?? 0;
 433                 if (empty($score)) {
 434                         return 0;
 435                 }
 436
 437                 $this->cache->set($cache_key, $score, Duration::HALF_HOUR);
 438                 $this->logger->debug('Calculated median score', ['cid' => $cid, 'divider' => $divider, 'median' => $score]);
 439                 return $score;
 440         }
 441
 442         /**
 443          * Computes the displayed items.
 444          *
 445          * Community pages have a restriction on how many successive posts by the same author can show on any given page,
 446          * so we may have to retrieve more content beyond the first query
 447          *
 448          * @return array
 449          * @throws \Exception
 450          */
 451         protected function getCommunityItems()
 452         {
 453                 $items = $this->selectItems();
 454
 455                 $maxpostperauthor = (int) $this->config->get('system', 'max_author_posts_community_page');
 456                 if ($maxpostperauthor != 0 && $this->selectedTab == 'local') {
 457                         $count          = 1;
 458                         $previousauthor = '';
 459                         $numposts       = 0;
 460                         $selected_items = [];
 461
 462                         while (count($selected_items) < $this->itemsPerPage && ++$count < 50 && count($items) > 0) {
 463                                 foreach ($items as $item) {
 464                                         if ($previousauthor == $item["author-link"]) {
 465                                                 ++$numposts;
 466                                         } else {
 467                                                 $numposts = 0;
 468                                         }
 469                                         $previousauthor = $item["author-link"];
 470
 471                                         if (($numposts < $maxpostperauthor) && (count($selected_items) < $this->itemsPerPage)) {
 472                                                 $selected_items[] = $item;
 473                                         }
 474                                 }
 475
 476                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 477                                 // sorted in chronologically decreasing order
 478                                 if (isset($this->minId)) {
 479                                         $this->minId = $items[0]['received'];
 480                                 } else {
 481                                         // In any other case, the lookup continues backwards in time
 482                                         $this->maxId = $items[count($items) - 1]['received'];
 483                                 }
 484
 485                                 $items = $this->selectItems();
 486                         }
 487                 } else {
 488                         $selected_items = $items;
 489                 }
 490
 491                 $condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => array_column($selected_items, 'uri-id')];
 492                 $this->setItemsSeenByCondition($condition);
 493
 494                 return $selected_items;
 495         }
 496
 497         /**
 498          * Database query for the community page
 499          *
 500          * @return array
 501          * @throws \Exception
 502          * @TODO Move to repository/factory
 503          */
 504         private function selectItems()
 505         {
 506                 if ($this->selectedTab == 'local') {
 507                         $condition = ["`wall` AND `origin` AND `private` = ?", Item::PUBLIC];
 508                 } elseif ($this->selectedTab == 'global') {
 509                         $condition = ["`uid` = ? AND `private` = ?", 0, Item::PUBLIC];
 510                 } else {
 511                         return [];
 512                 }
 513
 514                 if (!is_null($this->accountType)) {
 515                         $condition = DBA::mergeConditions($condition, ['owner-contact-type' => $this->accountType]);
 516                 }
 517
 518                 $params = ['order' => ['received' => true], 'limit' => $this->itemsPerPage];
 519
 520                 if (!empty($this->itemUriId)) {
 521                         $condition = DBA::mergeConditions($condition, ['uri-id' => $this->itemUriId]);
 522                 } else {
 523                         if ($this->session->getLocalUserId() && $this->noSharer) {
 524                                 $condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `post-user`.`uid` = ? AND `post-user`.`uri-id` = `post-thread-user-view`.`uri-id`)", $this->session->getLocalUserId()]);
 525                         }
 526
 527                         if (isset($this->maxId)) {
 528                                 $condition = DBA::mergeConditions($condition, ["`received` < ?", $this->maxId]);
 529                         }
 530
 531                         if (isset($this->minId)) {
 532                                 $condition = DBA::mergeConditions($condition, ["`received` > ?", $this->minId]);
 533
 534                                 // Previous page case: we want the items closest to min_id but for that we need to reverse the query order
 535                                 if (!isset($this->maxId)) {
 536                                         $params['order']['received'] = false;
 537                                 }
 538                         }
 539                 }
 540
 541                 $r = Post::selectThreadForUser($this->session->getLocalUserId() ?: 0, ['uri-id', 'received', 'author-link'], $condition, $params);
 542
 543                 $items = Post::toArray($r);
 544                 if (empty($items)) {
 545                         return [];
 546                 }
 547
 548                 // Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
 549                 if (empty($this->itemUriId) && isset($this->minId) && !isset($this->maxId)) {
 550                         $items = array_reverse($items);
 551                 }
 552
 553                 return $items;
 554         }
 555
 556         /**
 557          * Sets items as seen
 558          *
 559          * @param array $condition The array with the SQL condition
 560          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 561          */
 562         protected function setItemsSeenByCondition(array $condition)
 563         {
 564                 if (empty($condition)) {
 565                         return;
 566                 }
 567
 568                 $unseen = Post::exists($condition);
 569
 570                 if ($unseen) {
 571                         /// @todo handle huge "unseen" updates in the background to avoid timeout errors
 572                         Item::update(['unseen' => false], $condition);
 573                 }
 574         }
 575 }