src/Module/Conversation/Timeline.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2024, 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\Channel as ChannelEntity;
  29 use Friendica\Content\Conversation\Repository\UserDefinedChannel;
  30 use Friendica\Core\Cache\Capability\ICanCache;
  31 use Friendica\Core\Cache\Enum\Duration;
  32 use Friendica\Core\Config\Capability\IManageConfigValues;
  33 use Friendica\Core\L10n;
  34 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
  35 use Friendica\Core\Renderer;
  36 use Friendica\Core\Session\Capability\IHandleUserSessions;
  37 use Friendica\Model\Contact;
  38 use Friendica\Model\User;
  39 use Friendica\Database\Database;
  40 use Friendica\Database\DBA;
  41 use Friendica\Model\Item;
  42 use Friendica\Model\Post;
  43 use Friendica\Model\Post\Engagement;
  44 use Friendica\Model\Verb;
  45 use Friendica\Module\Response;
  46 use Friendica\Protocol\Activity;
  47 use Friendica\Util\DateTimeFormat;
  48 use Friendica\Util\Profiler;
  49 use Psr\Log\LoggerInterface;
  50
  51 class Timeline extends BaseModule
  52 {
  53         /** @var string */
  54         protected $selectedTab;
  55         /** @var mixed */
  56         protected $minId;
  57         /** @var mixed */
  58         protected $maxId;
  59         /** @var string */
  60         protected $accountTypeString;
  61         /** @var int */
  62         protected $accountType;
  63         /** @var int */
  64         protected $itemUriId;
  65         /** @var int */
  66         protected $itemsPerPage;
  67         /** @var bool */
  68         protected $noSharer;
  69         /** @var bool */
  70         protected $force;
  71         /** @var bool */
  72         protected $update;
  73         /** @var bool */
  74         protected $raw;
  75
  76         /** @var App\Mode $mode */
  77         protected $mode;
  78         /** @var IHandleUserSessions */
  79         protected $session;
  80         /** @var Database */
  81         protected $database;
  82         /** @var IManagePersonalConfigValues */
  83         protected $pConfig;
  84         /** @var IManageConfigValues The config */
  85         protected $config;
  86         /** @var ICanCache */
  87         protected $cache;
  88         /** @var UserDefinedChannel */
  89         protected $channelRepository;
  90
  91         public function __construct(UserDefinedChannel $channel, 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 $parameters = [])
  92         {
  93                 parent::__construct($l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
  94
  95                 $this->channelRepository = $channel;
  96                 $this->mode              = $mode;
  97                 $this->session           = $session;
  98                 $this->database          = $database;
  99                 $this->pConfig           = $pConfig;
 100                 $this->config            = $config;
 101                 $this->cache             = $cache;
 102         }
 103
 104         /**
 105          * Computes module parameters from the request and local configuration
 106          *
 107          * @throws HTTPException\BadRequestException
 108          * @throws HTTPException\ForbiddenException
 109          */
 110         protected function parseRequest(array $request)
 111         {
 112                 $this->logger->debug('Got request', $request);
 113                 $this->selectedTab = $this->parameters['content'] ?? $request['channel'] ?? '';
 114
 115                 $this->accountTypeString = $request['accounttype'] ?? $this->parameters['accounttype'] ?? '';
 116                 $this->accountType       = User::getAccountTypeByString($this->accountTypeString);
 117
 118                 if ($this->mode->isMobile()) {
 119                         $this->itemsPerPage = $this->pConfig->get(
 120                                 $this->session->getLocalUserId(),
 121                                 'system',
 122                                 'itemspage_mobile_network',
 123                                 $this->config->get('system', 'itemspage_network_mobile')
 124                         );
 125                 } else {
 126                         $this->itemsPerPage = $this->pConfig->get(
 127                                 $this->session->getLocalUserId(),
 128                                 'system',
 129                                 'itemspage_network',
 130                                 $this->config->get('system', 'itemspage_network')
 131                         );
 132                 }
 133
 134                 if (!empty($request['item'])) {
 135                         $item            = Post::selectFirst(['parent', 'parent-uri-id'], ['id' => $request['item']]);
 136                         $this->itemUriId = $item['parent-uri-id'] ?? 0;
 137                 } else {
 138                         $this->itemUriId = 0;
 139                 }
 140
 141                 $this->minId = $request['min_id'] ?? null;
 142                 $this->maxId = $request['max_id'] ?? null;
 143
 144                 $this->noSharer = !empty($request['no_sharer']);
 145                 $this->force    = !empty($request['force']) && !empty($request['item']);
 146                 $this->update   = !empty($request['force']) && !empty($request['first_received']) && !empty($request['first_created']) && !empty($request['first_uriid']) && !empty($request['first_commented']);
 147                 $this->raw      = !empty($request['mode']) && ($request['mode'] == 'raw');
 148         }
 149
 150         protected function getNoSharerWidget(string $base): string
 151         {
 152                 $path = $this->selectedTab;
 153                 if (!empty($this->accountTypeString)) {
 154                         $path .= '/' . $this->accountTypeString;
 155                 }
 156                 $query_parameters = [];
 157
 158                 if (!empty($this->minId)) {
 159                         $query_parameters['min_id'] = $this->minId;
 160                 }
 161                 if (!empty($this->maxId)) {
 162                         $query_parameters['max_id'] = $this->maxId;
 163                 }
 164
 165                 $path_all       = $path . (!empty($query_parameters) ? '?' . http_build_query($query_parameters) : '');
 166                 $path_no_sharer = $path . '?' . http_build_query(array_merge($query_parameters, ['no_sharer' => true]));
 167                 return Renderer::replaceMacros(Renderer::getMarkupTemplate('widget/community_sharer.tpl'), [
 168                         '$title'           => $this->l10n->t('Own Contacts'),
 169                         '$path_all'        => $path_all,
 170                         '$path_no_sharer'  => $path_no_sharer,
 171                         '$no_sharer'       => $this->noSharer,
 172                         '$all'             => $this->l10n->t('Include'),
 173                         '$no_sharer_label' => $this->l10n->t('Hide'),
 174                         '$base'            => $base,
 175                 ]);
 176         }
 177
 178         protected function getTabArray(Timelines $timelines, string $prefix, string $parameter = ''): array
 179         {
 180                 $tabs = [];
 181
 182                 foreach ($timelines as $tab) {
 183                         if (is_null($tab->path) && !empty($parameter)) {
 184                                 $path = $prefix . '?' . http_build_query([$parameter => $tab->code]);
 185                         } else {
 186                                 $path = $tab->path ?? $prefix . '/' . $tab->code;
 187                         }
 188                         $tabs[$tab->code] = [
 189                                 'code'      => $tab->code,
 190                                 'label'     => $tab->label,
 191                                 'url'       => $path,
 192                                 'sel'       => $this->selectedTab == $tab->code ? 'active' : '',
 193                                 'title'     => $tab->description,
 194                                 'id'        => $prefix . '-' . $tab->code . '-tab',
 195                                 'accesskey' => $tab->accessKey,
 196                         ];
 197                 }
 198                 return $tabs;
 199         }
 200
 201         /**
 202          * Database query for the channel page
 203          *
 204          * @return array
 205          * @throws \Exception
 206          */
 207         protected function getChannelItems()
 208         {
 209                 $items = $this->getRawChannelItems();
 210
 211                 $contacts = $this->database->selectToArray('user-contact', ['cid'], ['channel-frequency' => Contact\User::FREQUENCY_REDUCED, 'cid' => array_column($items, 'owner-id')]);
 212                 $reduced  = array_column($contacts, 'cid');
 213
 214                 $maxpostperauthor = $this->config->get('channel', 'max_posts_per_author');
 215
 216                 if ($maxpostperauthor != 0) {
 217                         $count          = 1;
 218                         $owner_posts    = [];
 219                         $selected_items = [];
 220
 221                         while (count($selected_items) < $this->itemsPerPage && ++$count < 50 && count($items) > 0) {
 222                                 $maxposts = round((count($items) / $this->itemsPerPage) * $maxpostperauthor);
 223                                 $minId = $items[array_key_first($items)]['created'];
 224                                 $maxId = $items[array_key_last($items)]['created'];
 225
 226                                 foreach ($items as $item) {
 227                                         if (!in_array($item['owner-id'], $reduced)) {
 228                                                 continue;
 229                                         }
 230                                         $owner_posts[$item['owner-id']][$item['uri-id']] = (($item['comments'] * 100) + $item['activities']);
 231                                 }
 232                                 foreach ($owner_posts as $posts) {
 233                                         if (count($posts) <= $maxposts) {
 234                                                 continue;
 235                                         }
 236                                         asort($posts);
 237                                         while (count($posts) > $maxposts) {
 238                                                 $uri_id = array_key_first($posts);
 239                                                 unset($posts[$uri_id]);
 240                                                 unset($items[$uri_id]);
 241                                         }
 242                                 }
 243                                 $selected_items = array_merge($selected_items, $items);
 244
 245                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 246                                 // sorted in chronologically decreasing order
 247                                 if (!empty($this->minId)) {
 248                                         $this->minId = $minId;
 249                                 } else {
 250                                         // In any other case, the lookup continues backwards in time
 251                                         $this->maxId = $maxId;
 252                                 }
 253
 254                                 if (count($selected_items) < $this->itemsPerPage) {
 255                                         $items = $this->getRawChannelItems();
 256                                 }
 257                         }
 258                 } else {
 259                         $selected_items = $items;
 260                 }
 261
 262                 $condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => array_column($selected_items, 'uri-id')];
 263                 $this->setItemsSeenByCondition($condition);
 264
 265                 return $selected_items;
 266         }
 267
 268         /**
 269          * Database query for the channel page
 270          *
 271          * @return array
 272          * @throws \Exception
 273          */
 274         private function getRawChannelItems()
 275         {
 276                 $uid = $this->session->getLocalUserId();
 277
 278                 if ($this->selectedTab == ChannelEntity::WHATSHOT) {
 279                         if (!is_null($this->accountType)) {
 280                                 $condition = ["(`comments` > ? OR `activities` > ?) AND `contact-type` = ?", $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), $this->accountType];
 281                         } else {
 282                                 $condition = ["(`comments` > ? OR `activities` > ?) AND `contact-type` != ?", $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), Contact::TYPE_COMMUNITY];
 283                         }
 284                 } elseif ($this->selectedTab == ChannelEntity::FORYOU) {
 285                         $cid = Contact::getPublicIdByUserId($uid);
 286
 287                         $condition = [
 288                                 "(`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `relation-cid` = ? AND `relation-thread-score` > ?) OR
 289                                 ((`comments` >= ? OR `activities` >= ?) AND `owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ?)) OR
 290                                 (`owner-id` IN (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND (`notify_new_posts` OR `channel-frequency` = ?))))",
 291                                 $cid, $this->getMedianRelationThreadScore($cid, 4), $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), $cid,
 292                                 $uid, Contact\User::FREQUENCY_ALWAYS
 293                         ];
 294                 } elseif ($this->selectedTab == ChannelEntity::DISCOVER) {
 295                         $cid = Contact::getPublicIdByUserId($uid);
 296
 297                         $condition = [
 298                                 "`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `relation-cid` = ? AND NOT `follows`) AND
 299                                 (`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `relation-cid` = ? AND NOT `follows` AND `relation-thread-score` > ?) OR
 300                                 `owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `cid` = ? AND `relation-thread-score` > ?) OR
 301                                 ((`comments` >= ? OR `activities` >= ?) AND
 302                                 (`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `cid` = ? AND `relation-thread-score` > ?)) OR
 303                                 (`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `relation-cid` = ? AND `relation-thread-score` > ?))))",
 304                                 $cid, $cid, $this->getMedianRelationThreadScore($cid, 4), $cid, $this->getMedianRelationThreadScore($cid, 4),
 305                                 $this->getMedianComments($uid, 4), $this->getMedianActivities($uid, 4), $cid, 0, $cid, 0
 306                         ];
 307
 308                 } elseif ($this->selectedTab == ChannelEntity::FOLLOWERS) {
 309                         $condition = ["`owner-id` IN (SELECT `pid` FROM `account-user-view` WHERE `uid` = ? AND `rel` = ?)", $uid, Contact::FOLLOWER];
 310                 } elseif ($this->selectedTab == ChannelEntity::SHARERSOFSHARERS) {
 311                         $cid = Contact::getPublicIdByUserId($uid);
 312
 313                         // @todo Suggest posts from contacts that are followed most by our followers
 314                         $condition = [
 315                                 "`owner-id` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `last-interaction` > ?
 316                                 AND `relation-cid` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ? AND `relation-thread-score` >= ?)
 317                                 AND NOT `cid` IN (SELECT `cid` FROM `contact-relation` WHERE `follows` AND `relation-cid` = ?))",
 318                                 DateTimeFormat::utc('now - ' . $this->config->get('channel', 'sharer_interaction_days') . ' day'), $cid, $this->getMedianRelationThreadScore($cid, 4), $cid
 319                         ];
 320                 } elseif ($this->selectedTab == ChannelEntity::IMAGE) {
 321                         $condition = ["`media-type` & ?", 1];
 322                 } elseif ($this->selectedTab == ChannelEntity::VIDEO) {
 323                         $condition = ["`media-type` & ?", 2];
 324                 } elseif ($this->selectedTab == ChannelEntity::AUDIO) {
 325                         $condition = ["`media-type` & ?", 4];
 326                 } elseif ($this->selectedTab == ChannelEntity::LANGUAGE) {
 327                         $condition = ["JSON_EXTRACT(JSON_KEYS(language), '$[0]') = ?", User::getLanguageCode($uid)];
 328                 } elseif (is_numeric($this->selectedTab)) {
 329                         $condition = $this->getUserChannelConditions($this->selectedTab, $uid);
 330                 }
 331
 332                 if (($this->selectedTab != ChannelEntity::LANGUAGE) && !is_numeric($this->selectedTab)) {
 333                         $condition = $this->addLanguageCondition($uid, $condition);
 334                 }
 335
 336                 $condition = DBA::mergeConditions($condition, ["(NOT `restricted` OR EXISTS(SELECT `id` FROM `post-user` WHERE `uid` = ? AND `uri-id` = `post-engagement`.`uri-id`))", $uid]);
 337
 338                 $condition = DBA::mergeConditions($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` = ?))", $uid, Contact\User::FREQUENCY_NEVER]);
 339
 340                 if (($this->selectedTab != ChannelEntity::WHATSHOT) && !is_null($this->accountType)) {
 341                         $condition = DBA::mergeConditions($condition, ['contact-type' => $this->accountType]);
 342                 }
 343
 344                 $params = ['order' => ['created' => true], 'limit' => $this->itemsPerPage];
 345
 346                 if (!empty($this->itemUriId)) {
 347                         $condition = DBA::mergeConditions($condition, ['uri-id' => $this->itemUriId]);
 348                 } else {
 349                         if ($this->noSharer) {
 350                                 $condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `post-user`.`uid` = ? AND `post-user`.`uri-id` = `post-engagement`.`uri-id`)", $this->session->getLocalUserId()]);
 351                         }
 352
 353                         if (isset($this->maxId)) {
 354                                 $condition = DBA::mergeConditions($condition, ["`created` < ?", $this->maxId]);
 355                         }
 356
 357                         if (isset($this->minId)) {
 358                                 $condition = DBA::mergeConditions($condition, ["`created` > ?", $this->minId]);
 359
 360                                 // Previous page case: we want the items closest to min_id but for that we need to reverse the query order
 361                                 if (!isset($this->maxId)) {
 362                                         $params['order']['created'] = false;
 363                                 }
 364                         }
 365                 }
 366
 367                 $items = [];
 368                 $result = $this->database->select('post-engagement', ['uri-id', 'created', 'owner-id', 'comments', 'activities'], $condition, $params);
 369                 if ($this->database->errorNo()) {
 370                         throw new \Exception($this->database->errorMessage(), $this->database->errorNo());
 371                 }
 372
 373                 while ($item = $this->database->fetch($result)) {
 374                         $items[$item['uri-id']] = $item;
 375                 }
 376                 $this->database->close($result);
 377
 378                 if (empty($items)) {
 379                         return [];
 380                 }
 381
 382                 // Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
 383                 if (empty($this->itemUriId) && isset($this->minId) && !isset($this->maxId)) {
 384                         $items = array_reverse($items, true);
 385                 }
 386
 387                 $condition = ['unseen' => true, 'uid' => $uid, 'parent-uri-id' => array_column($items, 'uri-id')];
 388                 $this->setItemsSeenByCondition($condition);
 389
 390                 return $items;
 391         }
 392
 393         private function getUserChannelConditions(int $id, int $uid): array
 394         {
 395                 $channel = $this->channelRepository->selectById($id, $uid);
 396                 if (empty($channel)) {
 397                         return [];
 398                 }
 399
 400                 $condition = [];
 401
 402                 if (!empty($channel->circle)) {
 403                         if ($channel->circle == -1) {
 404                                 $condition = ["`owner-id` IN (SELECT `pid` FROM `account-user-view` WHERE `uid` = ? AND `rel` IN (?, ?))", $uid, Contact::SHARING, Contact::FRIEND];
 405                         } elseif ($channel->circle == -2) {
 406                                 $condition = ["`owner-id` IN (SELECT `pid` FROM `account-user-view` WHERE `uid` = ? AND `rel` = ?)", $uid, Contact::FOLLOWER];
 407                         } elseif ($channel->circle == -3) {
 408                                 $condition = ["EXISTS(SELECT `uri-id` FROM `post-thread-user` WHERE `uid` = ? AND `post-thread-user`.`uri-id` = `post-engagement`.`uri-id`)", $uid];
 409                         } elseif ($channel->circle > 0) {
 410                                 $condition = DBA::mergeConditions($condition, ["`owner-id` IN (SELECT `pid` FROM `group_member` INNER JOIN `account-user-view` ON `group_member`.`contact-id` = `account-user-view`.`id` WHERE `gid` = ? AND `account-user-view`.`uid` = ?)", $channel->circle, $uid]);
 411                         }
 412                 }
 413
 414                 if (!empty($channel->fullTextSearch)) {
 415                         $condition = DBA::mergeConditions($condition, ["MATCH (`searchtext`) AGAINST (? IN BOOLEAN MODE)", Engagement::escapeKeywords($channel->fullTextSearch)]);
 416                 }
 417
 418                 if (!empty($channel->includeTags)) {
 419                         $search       = explode(',', mb_strtolower($channel->includeTags));
 420                         $placeholders = substr(str_repeat("?, ", count($search)), 0, -2);
 421                         $condition    = DBA::mergeConditions($condition, array_merge(["`uri-id` IN (SELECT `uri-id` FROM `post-tag` INNER JOIN `tag` ON `tag`.`id` = `post-tag`.`tid` WHERE `post-tag`.`type` = 1 AND `name` IN (" . $placeholders . "))"], $search));
 422                 }
 423
 424                 if (!empty($channel->excludeTags)) {
 425                         $search       = explode(',', mb_strtolower($channel->excludeTags));
 426                         $placeholders = substr(str_repeat("?, ", count($search)), 0, -2);
 427                         $condition    = DBA::mergeConditions($condition, array_merge(["NOT `uri-id` IN (SELECT `uri-id` FROM `post-tag` INNER JOIN `tag` ON `tag`.`id` = `post-tag`.`tid` WHERE `post-tag`.`type` = 1 AND `name` IN (" . $placeholders . "))"], $search));
 428                 }
 429
 430                 if (!is_null($channel->minSize)) {
 431                         $condition = DBA::mergeConditions($condition, ["`size` >= ?", $channel->minSize]);
 432                 }
 433
 434                 if (!is_null($channel->maxSize)) {
 435                         $condition = DBA::mergeConditions($condition, ["`size` <= ?", $channel->maxSize]);
 436                 }
 437
 438                 if (!empty($channel->mediaType)) {
 439                         $condition = DBA::mergeConditions($condition, ["`media-type` & ?", $channel->mediaType]);
 440                 }
 441
 442                 // For "addLanguageCondition" to work, the condition must not be empty
 443                 $condition = $this->addLanguageCondition($uid, $condition ?: ["true"], $channel->languages);
 444
 445                 return $condition;
 446         }
 447
 448         private function addLanguageCondition(int $uid, array $condition, $languages = null): array
 449         {
 450                 $conditions = [];
 451                 $languages  = $languages ?: User::getWantedLanguages($uid);
 452                 foreach ($languages as $language) {
 453                         $conditions[] = "JSON_EXTRACT(JSON_KEYS(language), '$[0]') = ?";
 454                         $condition[]  = $language;
 455                 }
 456                 if (!empty($conditions)) {
 457                         $condition[0] .= " AND (" . implode(' OR ', $conditions) . ")";
 458                 }
 459                 return $condition;
 460         }
 461
 462         private function getMedianComments(int $uid, int $divider): int
 463         {
 464                 $languages = User::getWantedLanguages($uid);
 465                 $cache_key = 'Channel:getMedianComments:' . $divider . ':' . implode(':', $languages);
 466                 $comments  = $this->cache->get($cache_key);
 467                 if (!empty($comments)) {
 468                         return $comments;
 469                 }
 470
 471                 $condition = ["`contact-type` != ? AND `comments` > ? AND NOT `restricted`", Contact::TYPE_COMMUNITY, 0];
 472                 $condition = $this->addLanguageCondition($uid, $condition);
 473
 474                 $limit    = $this->database->count('post-engagement', $condition) / $divider;
 475                 $post     = $this->database->selectToArray('post-engagement', ['comments'], $condition, ['order' => ['comments' => true], 'limit' => [$limit, 1]]);
 476                 $comments = $post[0]['comments'] ?? 0;
 477                 if (empty($comments)) {
 478                         return 0;
 479                 }
 480
 481                 $this->cache->set($cache_key, $comments, Duration::HALF_HOUR);
 482                 $this->logger->debug('Calculated median comments', ['divider' => $divider, 'languages' => $languages, 'median' => $comments]);
 483                 return $comments;
 484         }
 485
 486         private function getMedianActivities(int $uid, int $divider): int
 487         {
 488                 $languages  = User::getWantedLanguages($uid);
 489                 $cache_key  = 'Channel:getMedianActivities:' . $divider . ':' . implode(':', $languages);
 490                 $activities = $this->cache->get($cache_key);
 491                 if (!empty($activities)) {
 492                         return $activities;
 493                 }
 494
 495                 $condition = ["`contact-type` != ? AND `activities` > ? AND NOT `restricted`", Contact::TYPE_COMMUNITY, 0];
 496                 $condition = $this->addLanguageCondition($uid, $condition);
 497
 498                 $limit      = $this->database->count('post-engagement', $condition) / $divider;
 499                 $post       = $this->database->selectToArray('post-engagement', ['activities'], $condition, ['order' => ['activities' => true], 'limit' => [$limit, 1]]);
 500                 $activities = $post[0]['activities'] ?? 0;
 501                 if (empty($activities)) {
 502                         return 0;
 503                 }
 504
 505                 $this->cache->set($cache_key, $activities, Duration::HALF_HOUR);
 506                 $this->logger->debug('Calculated median activities', ['divider' => $divider, 'languages' => $languages, 'median' => $activities]);
 507                 return $activities;
 508         }
 509
 510         private function getMedianRelationThreadScore(int $cid, int $divider): int
 511         {
 512                 $cache_key = 'Channel:getThreadScore:' . $cid . ':' . $divider;
 513                 $score     = $this->cache->get($cache_key);
 514                 if (!empty($score)) {
 515                         return $score;
 516                 }
 517
 518                 $condition = ["`relation-cid` = ? AND `relation-thread-score` > ?", $cid, 0];
 519
 520                 $limit    = $this->database->count('contact-relation', $condition) / $divider;
 521                 $relation = $this->database->selectToArray('contact-relation', ['relation-thread-score'], $condition, ['order' => ['relation-thread-score' => true], 'limit' => [$limit, 1]]);
 522                 $score    = $relation[0]['relation-thread-score'] ?? 0;
 523                 if (empty($score)) {
 524                         return 0;
 525                 }
 526
 527                 $this->cache->set($cache_key, $score, Duration::HALF_HOUR);
 528                 $this->logger->debug('Calculated median score', ['cid' => $cid, 'divider' => $divider, 'median' => $score]);
 529                 return $score;
 530         }
 531
 532         /**
 533          * Computes the displayed items.
 534          *
 535          * Community pages have a restriction on how many successive posts by the same author can show on any given page,
 536          * so we may have to retrieve more content beyond the first query
 537          *
 538          * @return array
 539          * @throws \Exception
 540          */
 541         protected function getCommunityItems()
 542         {
 543                 $items = $this->selectItems();
 544
 545                 if ($this->selectedTab == 'local') {
 546                         $maxpostperauthor = (int)$this->config->get('system', 'max_author_posts_community_page');
 547                         $key = 'author-id';
 548                 } elseif ($this->selectedTab == 'global') {
 549                         $maxpostperauthor = (int)$this->config->get('system', 'max_server_posts_community_page');
 550                         $key = 'author-gsid';
 551                 } else {
 552                         $maxpostperauthor = 0;
 553                 }
 554                 if ($maxpostperauthor != 0) {
 555                         $count          = 1;
 556                         $author_posts   = [];
 557                         $selected_items = [];
 558
 559                         while (count($selected_items) < $this->itemsPerPage && ++$count < 50 && count($items) > 0) {
 560                                 $maxposts = round((count($items) / $this->itemsPerPage) * $maxpostperauthor);
 561                                 $minId = $items[array_key_first($items)]['received'];
 562                                 $maxId = $items[array_key_last($items)]['received'];
 563
 564                                 foreach ($items as $item) {
 565                                         $author_posts[$item[$key]][$item['uri-id']] = $item['received'];
 566                                 }
 567                                 foreach ($author_posts as $posts) {
 568                                         if (count($posts) <= $maxposts) {
 569                                                 continue;
 570                                         }
 571                                         asort($posts);
 572                                         while (count($posts) > $maxposts) {
 573                                                 $uri_id = array_key_first($posts);
 574                                                 unset($posts[$uri_id]);
 575                                                 unset($items[$uri_id]);
 576                                         }
 577                                 }
 578                                 $selected_items = array_merge($selected_items, $items);
 579
 580                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 581                                 // sorted in chronologically decreasing order
 582                                 if (!empty($this->minId)) {
 583                                         $this->minId = $minId;
 584                                 } else {
 585                                         // In any other case, the lookup continues backwards in time
 586                                         $this->maxId = $maxId;
 587                                 }
 588
 589                                 if (count($selected_items) < $this->itemsPerPage) {
 590                                         $items = $this->selectItems();
 591                                 }
 592                         }
 593                 } else {
 594                         $selected_items = $items;
 595                 }
 596
 597                 $condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => array_column($selected_items, 'uri-id')];
 598                 $this->setItemsSeenByCondition($condition);
 599
 600                 return $selected_items;
 601         }
 602
 603         /**
 604          * Database query for the community page
 605          *
 606          * @return array
 607          * @throws \Exception
 608          * @TODO Move to repository/factory
 609          */
 610         private function selectItems()
 611         {
 612                 if ($this->selectedTab == 'local') {
 613                         $condition = ["`wall` AND `origin` AND `private` = ?", Item::PUBLIC];
 614                 } elseif ($this->selectedTab == 'global') {
 615                         $condition = ["`uid` = ? AND `private` = ?", 0, Item::PUBLIC];
 616                 } else {
 617                         return [];
 618                 }
 619
 620                 if (!is_null($this->accountType)) {
 621                         $condition = DBA::mergeConditions($condition, ['owner-contact-type' => $this->accountType]);
 622                 }
 623
 624                 $params = ['order' => ['received' => true], 'limit' => $this->itemsPerPage];
 625
 626                 if (!empty($this->itemUriId)) {
 627                         $condition = DBA::mergeConditions($condition, ['uri-id' => $this->itemUriId]);
 628                 } else {
 629                         if ($this->session->getLocalUserId() && $this->noSharer) {
 630                                 $condition = DBA::mergeConditions($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`)", $this->session->getLocalUserId()]);
 631                         }
 632
 633                         if (isset($this->maxId)) {
 634                                 $condition = DBA::mergeConditions($condition, ["`received` < ?", $this->maxId]);
 635                         }
 636
 637                         if (isset($this->minId)) {
 638                                 $condition = DBA::mergeConditions($condition, ["`received` > ?", $this->minId]);
 639
 640                                 // Previous page case: we want the items closest to min_id but for that we need to reverse the query order
 641                                 if (!isset($this->maxId)) {
 642                                         $params['order']['received'] = false;
 643                                 }
 644                         }
 645                 }
 646
 647                 $items = [];
 648                 $result = Post::selectThreadForUser($this->session->getLocalUserId() ?: 0, ['uri-id', 'received', 'author-id', 'author-gsid'], $condition, $params);
 649
 650                 while ($item = $this->database->fetch($result)) {
 651                         $item['comments'] = 0;
 652
 653                         $items[$item['uri-id']] = $item;
 654                 }
 655                 $this->database->close($result);
 656
 657                 if (empty($items)) {
 658                         return [];
 659                 }
 660
 661                 $uriids = array_keys($items);
 662
 663                 foreach (Post\Counts::get(['parent-uri-id' => $uriids, 'verb' => Activity::POST]) as $count) {
 664                         $items[$count['parent-uri-id']]['comments'] += $count['count'];
 665                 }
 666
 667                 // Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
 668                 if (empty($this->itemUriId) && isset($this->minId) && !isset($this->maxId)) {
 669                         $items = array_reverse($items);
 670                 }
 671
 672                 return $items;
 673         }
 674
 675         /**
 676          * Sets items as seen
 677          *
 678          * @param array $condition The array with the SQL condition
 679          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 680          */
 681         protected function setItemsSeenByCondition(array $condition)
 682         {
 683                 if (empty($condition)) {
 684                         return;
 685                 }
 686
 687                 $unseen = Post::exists($condition);
 688
 689                 if ($unseen) {
 690                         /// @todo handle huge "unseen" updates in the background to avoid timeout errors
 691                         Item::update(['unseen' => false], $condition);
 692                 }
 693         }
 694 }