src/Content/Conversation.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, 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\Content;
  23
  24 use Friendica\App;
  25 use Friendica\App\Arguments;
  26 use Friendica\App\BaseURL;
  27 use Friendica\BaseModule;
  28 use Friendica\Core\ACL;
  29 use Friendica\Core\Config\Capability\IManageConfigValues;
  30 use Friendica\Core\Hook;
  31 use Friendica\Core\L10n;
  32 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
  33 use Friendica\Core\Protocol;
  34 use Friendica\Core\Renderer;
  35 use Friendica\Core\Session;
  36 use Friendica\Core\Theme;
  37 use Friendica\Database\DBA;
  38 use Friendica\Model\Contact;
  39 use Friendica\Model\Item as ItemModel;
  40 use Friendica\Model\Post;
  41 use Friendica\Model\Tag;
  42 use Friendica\Model\User;
  43 use Friendica\Model\Verb;
  44 use Friendica\Object\Post as PostObject;
  45 use Friendica\Object\Thread;
  46 use Friendica\Protocol\Activity;
  47 use Friendica\Util\Crypto;
  48 use Friendica\Util\DateTimeFormat;
  49 use Friendica\Util\Profiler;
  50 use Friendica\Util\Proxy;
  51 use Friendica\Util\Strings;
  52 use Friendica\Util\Temporal;
  53 use Psr\Log\LoggerInterface;
  54
  55 class Conversation
  56 {
  57         /** @var Activity */
  58         private $activity;
  59         /** @var L10n */
  60         private $l10n;
  61         /** @var Profiler */
  62         private $profiler;
  63         /** @var LoggerInterface */
  64         private $logger;
  65         /** @var Item */
  66         private $item;
  67         /** @var App\Arguments */
  68         private $args;
  69         /** @var IManagePersonalConfigValues */
  70         private $pConfig;
  71         /** @var BaseURL */
  72         private $baseURL;
  73         /** @var IManageConfigValues */
  74         private $config;
  75         /** @var App */
  76         private $app;
  77         /** @var App\Page */
  78         private $page;
  79         /** @var App\Mode */
  80         private $mode;
  81
  82         public function __construct(LoggerInterface $logger, Profiler $profiler, Activity $activity, L10n $l10n, Item $item, Arguments $args, BaseURL $baseURL, IManageConfigValues $config, IManagePersonalConfigValues $pConfig, App\Page $page, App\Mode $mode, App $app)
  83         {
  84                 $this->activity = $activity;
  85                 $this->item     = $item;
  86                 $this->config   = $config;
  87                 $this->mode     = $mode;
  88                 $this->baseURL  = $baseURL;
  89                 $this->profiler = $profiler;
  90                 $this->logger   = $logger;
  91                 $this->l10n     = $l10n;
  92                 $this->args     = $args;
  93                 $this->pConfig  = $pConfig;
  94                 $this->page     = $page;
  95                 $this->app      = $app;
  96         }
  97
  98         /**
  99          * Checks item to see if it is one of the builtin activities (like/dislike, event attendance, consensus items, etc.)
 100          *
 101          * Increments the count of each matching activity and adds a link to the author as needed.
 102          *
 103          * @param array  $activity
 104          * @param array &$conv_responses (already created with builtin activity structure)
 105          * @return void
 106          * @throws ImagickException
 107          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 108          */
 109         public function builtinActivityPuller(array $activity, array &$conv_responses)
 110         {
 111                 foreach ($conv_responses as $mode => $v) {
 112                         $sparkle = '';
 113
 114                         switch ($mode) {
 115                                 case 'like':
 116                                         $verb = Activity::LIKE;
 117                                         break;
 118                                 case 'dislike':
 119                                         $verb = Activity::DISLIKE;
 120                                         break;
 121                                 case 'attendyes':
 122                                         $verb = Activity::ATTEND;
 123                                         break;
 124                                 case 'attendno':
 125                                         $verb = Activity::ATTENDNO;
 126                                         break;
 127                                 case 'attendmaybe':
 128                                         $verb = Activity::ATTENDMAYBE;
 129                                         break;
 130                                 case 'announce':
 131                                         $verb = Activity::ANNOUNCE;
 132                                         break;
 133                                 default:
 134                                         return;
 135                         }
 136
 137                         if (!empty($activity['verb']) && $this->activity->match($activity['verb'], $verb) && ($activity['gravity'] != GRAVITY_PARENT)) {
 138                                 $author = [
 139                                         'uid'     => 0,
 140                                         'id'      => $activity['author-id'],
 141                                         'network' => $activity['author-network'],
 142                                         'url'     => $activity['author-link']
 143                                 ];
 144                                 $url = Contact::magicLinkByContact($author);
 145                                 if (strpos($url, 'redir/') === 0) {
 146                                         $sparkle = ' class="sparkle" ';
 147                                 }
 148
 149                                 $link = '<a href="' . $url . '"' . $sparkle . '>' . htmlentities($activity['author-name']) . '</a>';
 150
 151                                 if (empty($activity['thr-parent-id'])) {
 152                                         $activity['thr-parent-id'] = $activity['parent-uri-id'];
 153                                 }
 154
 155                                 // Skip when the causer of the parent is the same than the author of the announce
 156                                 if (($verb == Activity::ANNOUNCE) && Post::exists(['uri-id' => $activity['thr-parent-id'],
 157                                         'uid' => $activity['uid'], 'causer-id' => $activity['author-id'], 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT]])) {
 158                                         continue;
 159                                 }
 160
 161                                 if (!isset($conv_responses[$mode][$activity['thr-parent-id']])) {
 162                                         $conv_responses[$mode][$activity['thr-parent-id']] = [
 163                                                 'links' => [],
 164                                                 'self'  => 0,
 165                                         ];
 166                                 } elseif (in_array($link, $conv_responses[$mode][$activity['thr-parent-id']]['links'])) {
 167                                         // only list each unique author once
 168                                         continue;
 169                                 }
 170
 171                                 if (public_contact() == $activity['author-id']) {
 172                                         $conv_responses[$mode][$activity['thr-parent-id']]['self'] = 1;
 173                                 }
 174
 175                                 $conv_responses[$mode][$activity['thr-parent-id']]['links'][] = $link;
 176
 177                                 // there can only be one activity verb per item so if we found anything, we can stop looking
 178                                 return;
 179                         }
 180                 }
 181         }
 182
 183         /**
 184          * Format the activity text for an item/photo/video
 185          *
 186          * @param array  $links = array of pre-linked names of actors
 187          * @param string $verb  = one of 'like, 'dislike', 'attendyes', 'attendno', 'attendmaybe'
 188          * @param int    $id    = item id
 189          * @return string formatted text
 190          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 191          */
 192         public function formatActivity(array $links, $verb, $id)
 193         {
 194                 $this->profiler->startRecording('rendering');
 195                 $o        = '';
 196                 $expanded = '';
 197                 $phrase   = '';
 198
 199                 $total = count($links);
 200                 if ($total == 1) {
 201                         $likers = $links[0];
 202
 203                         // Phrase if there is only one liker. In other cases it will be uses for the expanded
 204                         // list which show all likers
 205                         switch ($verb) {
 206                                 case 'like':
 207                                         $phrase = $this->l10n->t('%s likes this.', $likers);
 208                                         break;
 209                                 case 'dislike':
 210                                         $phrase = $this->l10n->t('%s doesn\'t like this.', $likers);
 211                                         break;
 212                                 case 'attendyes':
 213                                         $phrase = $this->l10n->t('%s attends.', $likers);
 214                                         break;
 215                                 case 'attendno':
 216                                         $phrase = $this->l10n->t('%s doesn\'t attend.', $likers);
 217                                         break;
 218                                 case 'attendmaybe':
 219                                         $phrase = $this->l10n->t('%s attends maybe.', $likers);
 220                                         break;
 221                                 case 'announce':
 222                                         $phrase = $this->l10n->t('%s reshared this.', $likers);
 223                                         break;
 224                         }
 225                 } elseif ($total > 1) {
 226                         if ($total < $this->config->get('system', 'max_likers')) {
 227                                 $likers = implode(', ', array_slice($links, 0, -1));
 228                                 $likers .= ' ' . $this->l10n->t('and') . ' ' . $links[count($links) - 1];
 229                         } else {
 230                                 $likers = implode(', ', array_slice($links, 0, $this->config->get('system', 'max_likers') - 1));
 231                                 $likers .= ' ' . $this->l10n->t('and %d other people', $total - $this->config->get('system', 'max_likers'));
 232                         }
 233
 234                         $spanatts = "class=\"fakelink\" onclick=\"openClose('{$verb}list-$id');\"";
 235
 236                         $explikers = '';
 237                         switch ($verb) {
 238                                 case 'like':
 239                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> like this', $spanatts, $total);
 240                                         $explikers = $this->l10n->t('%s like this.', $likers);
 241                                         break;
 242                                 case 'dislike':
 243                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> don\'t like this', $spanatts, $total);
 244                                         $explikers = $this->l10n->t('%s don\'t like this.', $likers);
 245                                         break;
 246                                 case 'attendyes':
 247                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> attend', $spanatts, $total);
 248                                         $explikers = $this->l10n->t('%s attend.', $likers);
 249                                         break;
 250                                 case 'attendno':
 251                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> don\'t attend', $spanatts, $total);
 252                                         $explikers = $this->l10n->t('%s don\'t attend.', $likers);
 253                                         break;
 254                                 case 'attendmaybe':
 255                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> attend maybe', $spanatts, $total);
 256                                         $explikers = $this->l10n->t('%s attend maybe.', $likers);
 257                                         break;
 258                                 case 'announce':
 259                                         $phrase    = $this->l10n->t('<span  %1$s>%2$d people</span> reshared this', $spanatts, $total);
 260                                         $explikers = $this->l10n->t('%s reshared this.', $likers);
 261                                         break;
 262                         }
 263
 264                         $expanded .= "\t" . '<p class="wall-item-' . $verb . '-expanded" id="' . $verb . 'list-' . $id . '" style="display: none;" >' . $explikers . EOL . '</p>';
 265                 }
 266
 267                 $o .= Renderer::replaceMacros(Renderer::getMarkupTemplate('voting_fakelink.tpl'), [
 268                         '$phrase' => $phrase,
 269                         '$type'   => $verb,
 270                         '$id'     => $id
 271                 ]);
 272                 $o .= $expanded;
 273
 274                 $this->profiler->stopRecording();
 275                 return $o;
 276         }
 277
 278         public function statusEditor(array $x = [], $notes_cid = 0, $popup = false)
 279         {
 280                 $user = User::getById($this->app->getLoggedInUserId(), ['uid', 'nickname', 'allow_location', 'default-location']);
 281                 if (empty($user['uid'])) {
 282                         return '';
 283                 }
 284
 285                 $this->profiler->startRecording('rendering');
 286                 $o = '';
 287
 288                 $x['allow_location']   = $x['allow_location']   ?? $user['allow_location'];
 289                 $x['default_location'] = $x['default_location'] ?? $user['default-location'];
 290                 $x['nickname']         = $x['nickname']         ?? $user['nickname'];
 291                 $x['lockstate']        = $x['lockstate']        ?? ACL::getLockstateForUserId($user['uid']) ? 'lock' : 'unlock';
 292                 $x['acl']              = $x['acl']              ?? ACL::getFullSelectorHTML($this->page, $user['uid'], true);
 293                 $x['bang']             = $x['bang']             ?? '';
 294                 $x['visitor']          = $x['visitor']          ?? 'block';
 295                 $x['is_owner']         = $x['is_owner']         ?? true;
 296                 $x['profile_uid']      = $x['profile_uid']      ?? local_user();
 297
 298
 299                 $geotag = !empty($x['allow_location']) ? Renderer::replaceMacros(Renderer::getMarkupTemplate('jot_geotag.tpl'), []) : '';
 300
 301                 $tpl = Renderer::getMarkupTemplate('jot-header.tpl');
 302                 $this->page['htmlhead'] .= Renderer::replaceMacros($tpl, [
 303                         '$newpost'   => 'true',
 304                         '$baseurl'   => $this->baseURL->get(true),
 305                         '$geotag'    => $geotag,
 306                         '$nickname'  => $x['nickname'],
 307                         '$ispublic'  => $this->l10n->t('Visible to <strong>everybody</strong>'),
 308                         '$linkurl'   => $this->l10n->t('Please enter a image/video/audio/webpage URL:'),
 309                         '$term'      => $this->l10n->t('Tag term:'),
 310                         '$fileas'    => $this->l10n->t('Save to Folder:'),
 311                         '$whereareu' => $this->l10n->t('Where are you right now?'),
 312                         '$delitems'  => $this->l10n->t("Delete item\x28s\x29?"),
 313                         '$is_mobile' => $this->mode->isMobile(),
 314                 ]);
 315
 316                 $jotplugins = '';
 317                 Hook::callAll('jot_tool', $jotplugins);
 318
 319                 if ($this->config->get('system', 'set_creation_date')) {
 320                         $created_at = Temporal::getDateTimeField(
 321                                 new \DateTime(DBA::NULL_DATETIME),
 322                                 new \DateTime('now'),
 323                                 null,
 324                                 $this->l10n->t('Created at'),
 325                                 'created_at'
 326                         );
 327                 } else {
 328                         $created_at = '';
 329                 }
 330
 331                 $tpl = Renderer::getMarkupTemplate("jot.tpl");
 332
 333                 $o .= Renderer::replaceMacros($tpl, [
 334                         '$new_post'            => $this->l10n->t('New Post'),
 335                         '$return_path'         => $this->args->getQueryString(),
 336                         '$action'              => 'item',
 337                         '$share'               => ($x['button'] ?? '') ?: $this->l10n->t('Share'),
 338                         '$loading'             => $this->l10n->t('Loading...'),
 339                         '$upload'              => $this->l10n->t('Upload photo'),
 340                         '$shortupload'         => $this->l10n->t('upload photo'),
 341                         '$attach'              => $this->l10n->t('Attach file'),
 342                         '$shortattach'         => $this->l10n->t('attach file'),
 343                         '$edbold'              => $this->l10n->t('Bold'),
 344                         '$editalic'            => $this->l10n->t('Italic'),
 345                         '$eduline'             => $this->l10n->t('Underline'),
 346                         '$edquote'             => $this->l10n->t('Quote'),
 347                         '$edcode'              => $this->l10n->t('Code'),
 348                         '$edimg'               => $this->l10n->t('Image'),
 349                         '$edurl'               => $this->l10n->t('Link'),
 350                         '$edattach'            => $this->l10n->t('Link or Media'),
 351                         '$edvideo'             => $this->l10n->t('Video'),
 352                         '$setloc'              => $this->l10n->t('Set your location'),
 353                         '$shortsetloc'         => $this->l10n->t('set location'),
 354                         '$noloc'               => $this->l10n->t('Clear browser location'),
 355                         '$shortnoloc'          => $this->l10n->t('clear location'),
 356                         '$title'               => $x['title'] ?? '',
 357                         '$placeholdertitle'    => $this->l10n->t('Set title'),
 358                         '$category'            => $x['category'] ?? '',
 359                         '$placeholdercategory' => Feature::isEnabled(local_user(), 'categories') ? $this->l10n->t("Categories \x28comma-separated list\x29") : '',
 360                         '$scheduled_at'        => Temporal::getDateTimeField(
 361                                 new \DateTime(),
 362                                 new \DateTime('now + 6 months'),
 363                                 null,
 364                                 $this->l10n->t('Scheduled at'),
 365                                 'scheduled_at'
 366                         ),
 367                         '$created_at'   => $created_at,
 368                         '$wait'         => $this->l10n->t('Please wait'),
 369                         '$permset'      => $this->l10n->t('Permission settings'),
 370                         '$shortpermset' => $this->l10n->t('Permissions'),
 371                         '$wall'         => $notes_cid ? 0 : 1,
 372                         '$posttype'     => $notes_cid ? ItemModel::PT_PERSONAL_NOTE : ItemModel::PT_ARTICLE,
 373                         '$content'      => $x['content'] ?? '',
 374                         '$post_id'      => $x['post_id'] ?? '',
 375                         '$baseurl'      => $this->baseURL->get(true),
 376                         '$defloc'       => $x['default_location'],
 377                         '$visitor'      => $x['visitor'],
 378                         '$pvisit'       => $notes_cid ? 'none' : $x['visitor'],
 379                         '$public'       => $this->l10n->t('Public post'),
 380                         '$lockstate'    => $x['lockstate'],
 381                         '$bang'         => $x['bang'],
 382                         '$profile_uid'  => $x['profile_uid'],
 383                         '$preview'      => $this->l10n->t('Preview'),
 384                         '$jotplugins'   => $jotplugins,
 385                         '$notes_cid'    => $notes_cid,
 386                         '$cancel'       => $this->l10n->t('Cancel'),
 387                         '$rand_num'     => Crypto::randomDigits(12),
 388
 389                         // ACL permissions box
 390                         '$acl' => $x['acl'],
 391
 392                         //jot nav tab (used in some themes)
 393                         '$message' => $this->l10n->t('Message'),
 394                         '$browser' => $this->l10n->t('Browser'),
 395
 396                         '$compose_link_title' => $this->l10n->t('Open Compose page'),
 397                 ]);
 398
 399
 400                 if ($popup == true) {
 401                         $o = '<div id="jot-popup" style="display: none;">' . $o . '</div>';
 402                 }
 403
 404                 $this->profiler->stopRecording();
 405                 return $o;
 406         }
 407
 408         /**
 409          * "Render" a conversation or list of items for HTML display.
 410          * There are two major forms of display:
 411          *      - Sequential or unthreaded ("New Item View" or search results)
 412          *      - conversation view
 413          * The $mode parameter decides between the various renderings and also
 414          * figures out how to determine page owner and other contextual items
 415          * that are based on unique features of the calling module.
 416          * @param array  $items
 417          * @param        $mode
 418          * @param        $update
 419          * @param bool   $preview
 420          * @param string $order
 421          * @param int    $uid
 422          * @return string
 423          * @throws ImagickException
 424          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 425          */
 426         public function create(array $items, $mode, $update, $preview = false, $order = 'commented', $uid = 0)
 427         {
 428                 $this->profiler->startRecording('rendering');
 429
 430                 $this->page->registerFooterScript(Theme::getPathForFile('asset/typeahead.js/dist/typeahead.bundle.js'));
 431                 $this->page->registerFooterScript(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.js'));
 432                 $this->page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
 433                 $this->page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));
 434
 435                 $ssl_state = (local_user() ? true : false);
 436
 437                 $live_update_div = '';
 438
 439                 $blocklist = $this->getBlocklist();
 440
 441                 $previewing = (($preview) ? ' preview ' : '');
 442
 443                 if ($mode === 'network') {
 444                         $items = $this->addChildren($items, false, $order, $uid);
 445                         if (!$update) {
 446                                 /*
 447                                 * The special div is needed for liveUpdate to kick in for this page.
 448                                 * We only launch liveUpdate if you aren't filtering in some incompatible
 449                                 * way and also you aren't writing a comment (discovered in javascript).
 450                                 */
 451                                 $live_update_div = '<div id="live-network"></div>' . "\r\n"
 452                                         . "<script> var profile_uid = " . $_SESSION['uid']
 453                                         . "; var netargs = '" . substr($this->args->getCommand(), 8)
 454                                         . '?f='
 455                                         . (!empty($_GET['contactid']) ? '&contactid=' . rawurlencode($_GET['contactid']) : '')
 456                                         . (!empty($_GET['search'])    ? '&search='    . rawurlencode($_GET['search'])    : '')
 457                                         . (!empty($_GET['star'])      ? '&star='      . rawurlencode($_GET['star'])      : '')
 458                                         . (!empty($_GET['order'])     ? '&order='     . rawurlencode($_GET['order'])     : '')
 459                                         . (!empty($_GET['bmark'])     ? '&bmark='     . rawurlencode($_GET['bmark'])     : '')
 460                                         . (!empty($_GET['liked'])     ? '&liked='     . rawurlencode($_GET['liked'])     : '')
 461                                         . (!empty($_GET['conv'])      ? '&conv='      . rawurlencode($_GET['conv'])      : '')
 462                                         . (!empty($_GET['nets'])      ? '&nets='      . rawurlencode($_GET['nets'])      : '')
 463                                         . (!empty($_GET['cmin'])      ? '&cmin='      . rawurlencode($_GET['cmin'])      : '')
 464                                         . (!empty($_GET['cmax'])      ? '&cmax='      . rawurlencode($_GET['cmax'])      : '')
 465                                         . (!empty($_GET['file'])      ? '&file='      . rawurlencode($_GET['file'])      : '')
 466
 467                                         . "'; </script>\r\n";
 468                         }
 469                 } elseif ($mode === 'profile') {
 470                         $items = $this->addChildren($items, false, $order, $uid);
 471
 472                         if (!$update) {
 473                                 $tab = !empty($_GET['tab']) ? trim($_GET['tab']) : 'posts';
 474
 475                                 if ($tab === 'posts') {
 476                                         /*
 477                                         * This is ugly, but we can't pass the profile_uid through the session to the ajax updater,
 478                                         * because browser prefetching might change it on us. We have to deliver it with the page.
 479                                         */
 480
 481                                         $live_update_div = '<div id="live-profile"></div>' . "\r\n"
 482                                                 . "<script> var profile_uid = " . $uid
 483                                                 . "; var netargs = '?f='; </script>\r\n";
 484                                 }
 485                         }
 486                 } elseif ($mode === 'notes') {
 487                         $items = $this->addChildren($items, false, $order, local_user());
 488
 489                         if (!$update) {
 490                                 $live_update_div = '<div id="live-notes"></div>' . "\r\n"
 491                                         . "<script> var profile_uid = " . local_user()
 492                                         . "; var netargs = '/?f='; </script>\r\n";
 493                         }
 494                 } elseif ($mode === 'display') {
 495                         $items = $this->addChildren($items, false, $order, $uid);
 496
 497                         if (!$update) {
 498                                 $live_update_div = '<div id="live-display"></div>' . "\r\n"
 499                                         . "<script> var profile_uid = " . Session::get('uid', 0) . ";"
 500                                         . "</script>";
 501                         }
 502                 } elseif ($mode === 'community') {
 503                         $items = $this->addChildren($items, true, $order, $uid);
 504
 505                         if (!$update) {
 506                                 $live_update_div = '<div id="live-community"></div>' . "\r\n"
 507                                         . "<script> var profile_uid = -1; var netargs = '" . substr($this->args->getCommand(), 10)
 508                                         . '?f='
 509                                         . (!empty($_GET['no_sharer']) ? '&no_sharer=' . rawurlencode($_GET['no_sharer']) : '')
 510                                         . "'; </script>\r\n";
 511                         }
 512                 } elseif ($mode === 'contacts') {
 513                         $items = $this->addChildren($items, false, $order, $uid);
 514
 515                         if (!$update) {
 516                                 $live_update_div = '<div id="live-contact"></div>' . "\r\n"
 517                                         . "<script> var profile_uid = -1; var netargs = '" . substr($this->args->getCommand(), 8)
 518                                         ."/?f='; </script>\r\n";
 519                         }
 520                 } elseif ($mode === 'search') {
 521                         $live_update_div = '<div id="live-search"></div>' . "\r\n";
 522                 }
 523
 524                 $page_dropping = ((local_user() && local_user() == $uid) ? true : false);
 525
 526                 if (!$update) {
 527                         $_SESSION['return_path'] = $this->args->getQueryString();
 528                 }
 529
 530                 $cb = ['items' => $items, 'mode' => $mode, 'update' => $update, 'preview' => $preview];
 531                 Hook::callAll('conversation_start', $cb);
 532
 533                 $items = $cb['items'];
 534
 535                 $conv_responses = [
 536                         'like'        => [],
 537                         'dislike'     => [],
 538                         'attendyes'   => [],
 539                         'attendno'    => [],
 540                         'attendmaybe' => [],
 541                         'announce'    => [],
 542                 ];
 543
 544                 if ($this->pConfig->get(local_user(), 'system', 'hide_dislike')) {
 545                         unset($conv_responses['dislike']);
 546                 }
 547
 548                 // array with html for each thread (parent+comments)
 549                 $threads   = [];
 550                 $threadsid = -1;
 551
 552                 $page_template     = Renderer::getMarkupTemplate("conversation.tpl");
 553                 $formSecurityToken = BaseModule::getFormSecurityToken('contact_action');
 554
 555                 if (!empty($items)) {
 556                         if (in_array($mode, ['community', 'contacts', 'profile'])) {
 557                                 $writable = true;
 558                         } else {
 559                                 $writable = ($items[0]['uid'] == 0) && in_array($items[0]['network'], Protocol::FEDERATED);
 560                         }
 561
 562                         if (!local_user()) {
 563                                 $writable = false;
 564                         }
 565
 566                         if (in_array($mode, ['filed', 'search', 'contact-posts'])) {
 567
 568                                 /*
 569                                 * "New Item View" on network page or search page results
 570                                 * - just loop through the items and format them minimally for display
 571                                 */
 572
 573                                 $tpl = 'search_item.tpl';
 574
 575                                 $uriids = [];
 576
 577                                 foreach ($items as $item) {
 578                                         if (in_array($item['uri-id'], $uriids)) {
 579                                                 continue;
 580                                         }
 581
 582                                         $uriids[] = $item['uri-id'];
 583
 584                                         if (!$this->item->visibleActivity($item)) {
 585                                                 continue;
 586                                         }
 587
 588                                         if (in_array($item['author-id'], $blocklist)) {
 589                                                 continue;
 590                                         }
 591
 592                                         $threadsid++;
 593
 594                                         // prevent private email from leaking.
 595                                         if ($item['network'] === Protocol::MAIL && local_user() != $item['uid']) {
 596                                                 continue;
 597                                         }
 598
 599                                         $profile_name = $item['author-name'];
 600                                         if (!empty($item['author-link']) && empty($item['author-name'])) {
 601                                                 $profile_name = $item['author-link'];
 602                                         }
 603
 604                                         $tags = Tag::populateFromItem($item);
 605
 606                                         $author       = ['uid' => 0, 'id' => $item['author-id'], 'network' => $item['author-network'], 'url' => $item['author-link']];
 607                                         $profile_link = Contact::magicLinkByContact($author);
 608
 609                                         $sparkle = '';
 610                                         if (strpos($profile_link, 'redir/') === 0) {
 611                                                 $sparkle = ' sparkle';
 612                                         }
 613
 614                                         $locate = ['location' => $item['location'], 'coord' => $item['coord'], 'html' => ''];
 615                                         Hook::callAll('render_location', $locate);
 616                                         $location_html = $locate['html'] ?: Strings::escapeHtml($locate['location'] ?: $locate['coord'] ?: '');
 617
 618                                         $this->item->localize($item);
 619                                         if ($mode === 'filed') {
 620                                                 $dropping = true;
 621                                         } else {
 622                                                 $dropping = false;
 623                                         }
 624
 625                                         $drop = [
 626                                                 'dropping' => $dropping,
 627                                                 'pagedrop' => $page_dropping,
 628                                                 'select'   => $this->l10n->t('Select'),
 629                                                 'delete'   => $this->l10n->t('Delete'),
 630                                         ];
 631
 632                                         $likebuttons = [
 633                                                 'like'     => null,
 634                                                 'dislike'  => null,
 635                                                 'share'    => null,
 636                                                 'announce' => null,
 637                                         ];
 638
 639                                         if ($this->pConfig->get(local_user(), 'system', 'hide_dislike')) {
 640                                                 unset($likebuttons['dislike']);
 641                                         }
 642
 643                                         $body_html = ItemModel::prepareBody($item, true, $preview);
 644
 645                                         [$categories, $folders] = $this->item->determineCategoriesTerms($item, local_user());
 646
 647                                         if (!empty($item['title'])) {
 648                                                 $title = $item['title'];
 649                                         } elseif (!empty($item['content-warning']) && $this->pConfig->get(local_user(), 'system', 'disable_cw', false)) {
 650                                                 $title = ucfirst($item['content-warning']);
 651                                         } else {
 652                                                 $title = '';
 653                                         }
 654
 655                                         if (!empty($item['featured'])) {
 656                                                 $pinned = $this->l10n->t('Pinned item');
 657                                         } else {
 658                                                 $pinned = '';
 659                                         }
 660
 661                                         $tmp_item = [
 662                                                 'template'             => $tpl,
 663                                                 'id'                   => ($preview ? 'P0' : $item['id']),
 664                                                 'guid'                 => ($preview ? 'Q0' : $item['guid']),
 665                                                 'commented'            => $item['commented'],
 666                                                 'received'             => $item['received'],
 667                                                 'created_date'         => $item['created'],
 668                                                 'uriid'                => $item['uri-id'],
 669                                                 'network'              => $item['network'],
 670                                                 'network_name'         => ContactSelector::networkToName($item['author-network'], $item['author-link'], $item['network']),
 671                                                 'network_icon'         => ContactSelector::networkToIcon($item['network'], $item['author-link']),
 672                                                 'linktitle'            => $this->l10n->t('View %s\'s profile @ %s', $profile_name, $item['author-link']),
 673                                                 'profile_url'          => $profile_link,
 674                                                 'item_photo_menu_html' => $this->item->photoMenu($item, $formSecurityToken),
 675                                                 'name'                 => $profile_name,
 676                                                 'sparkle'              => $sparkle,
 677                                                 'lock'                 => false,
 678                                                 'thumb'                => $this->baseURL->remove(Contact::getAvatarUrlForUrl($item['author-link'], $item['uid'], Proxy::SIZE_THUMB)),
 679                                                 'title'                => $title,
 680                                                 'body_html'            => $body_html,
 681                                                 'tags'                 => $tags['tags'],
 682                                                 'hashtags'             => $tags['hashtags'],
 683                                                 'mentions'             => $tags['mentions'],
 684                                                 'implicit_mentions'    => $tags['implicit_mentions'],
 685                                                 'txt_cats'             => $this->l10n->t('Categories:'),
 686                                                 'txt_folders'          => $this->l10n->t('Filed under:'),
 687                                                 'has_cats'             => ((count($categories)) ? 'true' : ''),
 688                                                 'has_folders'          => ((count($folders)) ? 'true' : ''),
 689                                                 'categories'           => $categories,
 690                                                 'folders'              => $folders,
 691                                                 'text'                 => strip_tags($body_html),
 692                                                 'localtime'            => DateTimeFormat::local($item['created'], 'r'),
 693                                                 'utc'                  => DateTimeFormat::utc($item['created'], 'c'),
 694                                                 'ago'                  => (($item['app']) ? $this->l10n->t('%s from %s', Temporal::getRelativeDate($item['created']), $item['app']) : Temporal::getRelativeDate($item['created'])),
 695                                                 'location_html'        => $location_html,
 696                                                 'indent'               => '',
 697                                                 'owner_name'           => '',
 698                                                 'owner_url'            => '',
 699                                                 'owner_photo'          => $this->baseURL->remove(Contact::getAvatarUrlForUrl($item['owner-link'], $item['uid'], Proxy::SIZE_THUMB)),
 700                                                 'plink'                => ItemModel::getPlink($item),
 701                                                 'edpost'               => false,
 702                                                 'pinned'               => $pinned,
 703                                                 'isstarred'            => 'unstarred',
 704                                                 'star'                 => false,
 705                                                 'drop'                 => $drop,
 706                                                 'vote'                 => $likebuttons,
 707                                                 'like_html'            => '',
 708                                                 'dislike_html '        => '',
 709                                                 'comment_html'         => '',
 710                                                 'conv'                 => ($preview ? '' : ['href' => 'display/' . $item['guid'], 'title' => $this->l10n->t('View in context')]),
 711                                                 'previewing'           => $previewing,
 712                                                 'wait'                 => $this->l10n->t('Please wait'),
 713                                                 'thread_level'         => 1,
 714                                         ];
 715
 716                                         $arr = ['item' => $item, 'output' => $tmp_item];
 717                                         Hook::callAll('display_item', $arr);
 718
 719                                         $threads[$threadsid]['id']      = $item['id'];
 720                                         $threads[$threadsid]['network'] = $item['network'];
 721                                         $threads[$threadsid]['items']   = [$arr['output']];
 722                                 }
 723                         } else {
 724                                 // Normal View
 725                                 $page_template = Renderer::getMarkupTemplate("threaded_conversation.tpl");
 726
 727                                 $conv = new Thread($mode, $preview, $writable);
 728
 729                                 /*
 730                                 * get all the topmost parents
 731                                 * this shouldn't be needed, as we should have only them in our array
 732                                 * But for now, this array respects the old style, just in case
 733                                 */
 734                                 foreach ($items as $item) {
 735                                         if (in_array($item['author-id'], $blocklist)) {
 736                                                 continue;
 737                                         }
 738
 739                                         // Can we put this after the visibility check?
 740                                         $this->builtinActivityPuller($item, $conv_responses);
 741
 742                                         // Only add what is visible
 743                                         if ($item['network'] === Protocol::MAIL && local_user() != $item['uid']) {
 744                                                 continue;
 745                                         }
 746
 747                                         if (!$this->item->visibleActivity($item)) {
 748                                                 continue;
 749                                         }
 750
 751                                         /// @todo Check if this call is needed or not
 752                                         $arr = ['item' => $item];
 753                                         Hook::callAll('display_item', $arr);
 754
 755                                         $item['pagedrop'] = $page_dropping;
 756
 757                                         if ($item['gravity'] == GRAVITY_PARENT) {
 758                                                 $item_object = new PostObject($item);
 759                                                 $conv->addParent($item_object);
 760                                         }
 761                                 }
 762
 763                                 $threads = $conv->getTemplateData($conv_responses, $formSecurityToken);
 764                                 if (!$threads) {
 765                                         $this->logger->info('[ERROR] conversation : Failed to get template data.');
 766                                         $threads = [];
 767                                 }
 768                         }
 769                 }
 770
 771                 $o = Renderer::replaceMacros($page_template, [
 772                         '$baseurl'     => $this->baseURL->get($ssl_state),
 773                         '$return_path' => $this->args->getQueryString(),
 774                         '$live_update' => $live_update_div,
 775                         '$remove'      => $this->l10n->t('remove'),
 776                         '$mode'        => $mode,
 777                         '$update'      => $update,
 778                         '$threads'     => $threads,
 779                         '$dropping'    => ($page_dropping ? $this->l10n->t('Delete Selected Items') : false),
 780                 ]);
 781
 782                 $this->profiler->stopRecording();
 783                 return $o;
 784         }
 785
 786         private function getBlocklist()
 787         {
 788                 if (!local_user()) {
 789                         return [];
 790                 }
 791
 792                 $str_blocked = str_replace(["\n", "\r"], ",", $this->pConfig->get(local_user(), 'system', 'blocked'));
 793                 if (empty($str_blocked)) {
 794                         return [];
 795                 }
 796
 797                 $blocklist = [];
 798
 799                 foreach (explode(',', $str_blocked) as $entry) {
 800                         $cid = Contact::getIdForURL(trim($entry), 0, false);
 801                         if (!empty($cid)) {
 802                                 $blocklist[] = $cid;
 803                         }
 804                 }
 805
 806                 return $blocklist;
 807         }
 808
 809         /**
 810          * Adds some information (Causer, post reason, direction) to the fetched post row.
 811          *
 812          * @param array   $row      Post row
 813          * @param array   $activity Contact data of the resharer
 814          *
 815          * @return array items with parents and comments
 816          */
 817         private function addRowInformation(array $row, array $activity)
 818         {
 819                 $this->profiler->startRecording('rendering');
 820
 821                 if ($row['uid'] == 0) {
 822                         $row['writable'] = in_array($row['network'], Protocol::FEDERATED);
 823                 }
 824
 825                 if (!empty($activity)) {
 826                         if (($row['gravity'] == GRAVITY_PARENT)) {
 827                                 $row['post-reason'] = ItemModel::PR_ANNOUNCEMENT;
 828
 829                                 $row     = array_merge($row, $activity);
 830                                 $contact = Contact::getById($activity['causer-id'], ['url', 'name', 'thumb']);
 831
 832                                 $row['causer-link']   = $contact['url'];
 833                                 $row['causer-avatar'] = $contact['thumb'];
 834                                 $row['causer-name']   = $contact['name'];
 835                         } elseif (($row['gravity'] == GRAVITY_ACTIVITY) && ($row['verb'] == Activity::ANNOUNCE) &&
 836                                 ($row['author-id'] == $activity['causer-id'])) {
 837                                 return $row;
 838                         }
 839                 }
 840
 841                 switch ($row['post-reason']) {
 842                         case ItemModel::PR_TO:
 843                                 $row['direction'] = ['direction' => 7, 'title' => $this->l10n->t('You had been addressed (%s).', 'to')];
 844                                 break;
 845                         case ItemModel::PR_CC:
 846                                 $row['direction'] = ['direction' => 7, 'title' => $this->l10n->t('You had been addressed (%s).', 'cc')];
 847                                 break;
 848                         case ItemModel::PR_BTO:
 849                                 $row['direction'] = ['direction' => 7, 'title' => $this->l10n->t('You had been addressed (%s).', 'bto')];
 850                                 break;
 851                         case ItemModel::PR_BCC:
 852                                 $row['direction'] = ['direction' => 7, 'title' => $this->l10n->t('You had been addressed (%s).', 'bcc')];
 853                                 break;
 854                         case ItemModel::PR_FOLLOWER:
 855                                 $row['direction'] = ['direction' => 6, 'title' => $this->l10n->t('You are following %s.', $row['author-name'])];
 856                                 break;
 857                         case ItemModel::PR_TAG:
 858                                 $row['direction'] = ['direction' => 4, 'title' => $this->l10n->t('Tagged')];
 859                                 break;
 860                         case ItemModel::PR_ANNOUNCEMENT:
 861                                 if (!empty($row['causer-id']) && $this->pConfig->get(local_user(), 'system', 'display_resharer')) {
 862                                         $row['owner-id']     = $row['causer-id'];
 863                                         $row['owner-link']   = $row['causer-link'];
 864                                         $row['owner-avatar'] = $row['causer-avatar'];
 865                                         $row['owner-name']   = $row['causer-name'];
 866                                 }
 867
 868                                 if (in_array($row['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]) && !empty($row['causer-id'])) {
 869                                         $causer = ['uid' => 0, 'id' => $row['causer-id'], 'network' => $row['causer-network'], 'url' => $row['causer-link']];
 870
 871                                         $row['reshared'] = $this->l10n->t('%s reshared this.', '<a href="'. htmlentities(Contact::magicLinkByContact($causer)) .'">' . htmlentities($row['causer-name']) . '</a>');
 872                                 }
 873                                 $row['direction'] = ['direction' => 3, 'title' => (empty($row['causer-id']) ? $this->l10n->t('Reshared') : $this->l10n->t('Reshared by %s <%s>', $row['causer-name'], $row['causer-link']))];
 874                                 break;
 875                         case ItemModel::PR_COMMENT:
 876                                 $row['direction'] = ['direction' => 5, 'title' => $this->l10n->t('%s is participating in this thread.', $row['author-name'])];
 877                                 break;
 878                         case ItemModel::PR_STORED:
 879                                 $row['direction'] = ['direction' => 8, 'title' => $this->l10n->t('Stored')];
 880                                 break;
 881                         case ItemModel::PR_GLOBAL:
 882                                 $row['direction'] = ['direction' => 9, 'title' => $this->l10n->t('Global')];
 883                                 break;
 884                         case ItemModel::PR_RELAY:
 885                                 $row['direction'] = ['direction' => 10, 'title' => (empty($row['causer-id']) ? $this->l10n->t('Relayed') : $this->l10n->t('Relayed by %s <%s>', $row['causer-name'], $row['causer-link']))];
 886                                 break;
 887                         case ItemModel::PR_FETCHED:
 888                                 $row['direction'] = ['direction' => 2, 'title' => (empty($row['causer-id']) ? $this->l10n->t('Fetched') : $this->l10n->t('Fetched because of %s <%s>', $row['causer-name'], $row['causer-link']))];
 889                                 break;
 890                 }
 891
 892                 $this->profiler->stopRecording();
 893                 return $row;
 894         }
 895
 896         /**
 897          * Add comments to top level entries that had been fetched before
 898          *
 899          * The system will fetch the comments for the local user whenever possible.
 900          * This behaviour is currently needed to allow commenting on Friendica posts.
 901          *
 902          * @param array $parents Parent items
 903          *
 904          * @param       $block_authors
 905          * @param       $order
 906          * @param       $uid
 907          * @return array items with parents and comments
 908          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 909          */
 910         private function addChildren(array $parents, $block_authors, $order, $uid)
 911         {
 912                 $this->profiler->startRecording('rendering');
 913                 if (count($parents) > 1) {
 914                         $max_comments = $this->config->get('system', 'max_comments', 100);
 915                 } else {
 916                         $max_comments = $this->config->get('system', 'max_display_comments', 1000);
 917                 }
 918
 919                 $params = ['order' => ['uri-id' => true, 'uid' => true]];
 920
 921                 $activities      = [];
 922                 $uriids          = [];
 923                 $commentcounter  = [];
 924                 $activitycounter = [];
 925
 926                 foreach ($parents as $parent) {
 927                         if (!empty($parent['thr-parent-id']) && !empty($parent['gravity']) && ($parent['gravity'] == GRAVITY_ACTIVITY)) {
 928                                 $uriid = $parent['thr-parent-id'];
 929                                 if (!empty($parent['author-id'])) {
 930                                         $activities[$uriid] = ['causer-id' => $parent['author-id']];
 931                                         foreach (['commented', 'received', 'created'] as $orderfields) {
 932                                                 if (!empty($parent[$orderfields])) {
 933                                                         $activities[$uriid][$orderfields] = $parent[$orderfields];
 934                                                 }
 935                                         }
 936                                 }
 937                         } else {
 938                                 $uriid = $parent['uri-id'];
 939                         }
 940                         $uriids[] = $uriid;
 941
 942                         $commentcounter[$uriid]  = 0;
 943                         $activitycounter[$uriid] = 0;
 944                 }
 945
 946                 $condition = ['parent-uri-id' => $uriids];
 947                 if ($block_authors) {
 948                         $condition['author-hidden'] = false;
 949                 }
 950
 951                 $condition = DBA::mergeConditions($condition,
 952                         ["`uid` IN (0, ?) AND (`vid` != ? OR `vid` IS NULL)", $uid, Verb::getID(Activity::FOLLOW)]);
 953
 954                 $thread_items = Post::selectForUser($uid, array_merge(ItemModel::DISPLAY_FIELDLIST, ['featured', 'contact-uid', 'gravity', 'post-type', 'post-reason']), $condition, $params);
 955
 956                 $items = [];
 957
 958                 while ($row = Post::fetch($thread_items)) {
 959                         if (!empty($items[$row['uri-id']]) && ($row['uid'] == 0)) {
 960                                 continue;
 961                         }
 962
 963                         if ($max_comments > 0) {
 964                                 if (($row['gravity'] == GRAVITY_COMMENT) && (++$commentcounter[$row['parent-uri-id']] > $max_comments)) {
 965                                         continue;
 966                                 }
 967                                 if (($row['gravity'] == GRAVITY_ACTIVITY) && (++$activitycounter[$row['parent-uri-id']] > $max_comments)) {
 968                                         continue;
 969                                 }
 970                         }
 971                         $items[$row['uri-id']] = $this->addRowInformation($row, $activities[$row['uri-id']] ?? []);
 972                 }
 973
 974                 DBA::close($thread_items);
 975
 976                 $items = $this->convSort($items, $order);
 977
 978                 $this->profiler->stopRecording();
 979                 return $items;
 980         }
 981
 982         /**
 983          * Plucks the children of the given parent from a given item list.
 984          *
 985          * @param array $item_list
 986          * @param array $parent
 987          * @param bool  $recursive
 988          * @return array
 989          */
 990         private function getItemChildren(array &$item_list, array $parent, $recursive = true)
 991         {
 992                 $this->profiler->startRecording('rendering');
 993                 $children = [];
 994                 foreach ($item_list as $i => $item) {
 995                         if ($item['gravity'] != GRAVITY_PARENT) {
 996                                 if ($recursive) {
 997                                         // Fallback to parent-uri if thr-parent is not set
 998                                         $thr_parent = $item['thr-parent-id'];
 999                                         if ($thr_parent == '') {
1000                                                 $thr_parent = $item['parent-uri-id'];
1001                                         }
1002
1003                                         if ($thr_parent == $parent['uri-id']) {
1004                                                 $item['children'] = $this->getItemChildren($item_list, $item);
1005
1006                                                 $children[] = $item;
1007                                                 unset($item_list[$i]);
1008                                         }
1009                                 } elseif ($item['parent-uri-id'] == $parent['uri-id']) {
1010                                         $children[] = $item;
1011                                         unset($item_list[$i]);
1012                                 }
1013                         }
1014                 }
1015                 $this->profiler->stopRecording();
1016                 return $children;
1017         }
1018
1019         /**
1020          * Recursively sorts a tree-like item array
1021          *
1022          * @param array $items
1023          * @return array
1024          */
1025         private function sortItemChildren(array $items)
1026         {
1027                 $this->profiler->startRecording('rendering');
1028                 $result = $items;
1029                 usort($result, [$this, 'sortThrReceivedRev']);
1030                 foreach ($result as $k => $i) {
1031                         if (isset($result[$k]['children'])) {
1032                                 $result[$k]['children'] = $this->sortItemChildren($result[$k]['children']);
1033                         }
1034                 }
1035                 $this->profiler->stopRecording();
1036                 return $result;
1037         }
1038
1039         /**
1040          * Recursively add all children items at the top level of a list
1041          *
1042          * @param array $children List of items to append
1043          * @param array $item_list
1044          */
1045         private function addChildrenToList(array $children, array &$item_list)
1046         {
1047                 foreach ($children as $child) {
1048                         $item_list[] = $child;
1049                         if (isset($child['children'])) {
1050                                 $this->addChildrenToList($child['children'], $item_list);
1051                         }
1052                 }
1053         }
1054
1055         /**
1056          * Selectively flattens a tree-like item structure to prevent threading stairs
1057          *
1058          * This recursive function takes the item tree structure created by conv_sort() and
1059          * flatten the extraneous depth levels when people reply sequentially, removing the
1060          * stairs effect in threaded conversations limiting the available content width.
1061          *
1062          * The basic principle is the following: if a post item has only one reply and is
1063          * the last reply of its parent, then the reply is moved to the parent.
1064          *
1065          * This process is rendered somewhat more complicated because items can be either
1066          * replies or likes, and these don't factor at all in the reply count/last reply.
1067          *
1068          * @param array $parent A tree-like array of items
1069          * @return array
1070          */
1071         private function smartFlattenConversation(array $parent)
1072         {
1073                 $this->profiler->startRecording('rendering');
1074                 if (!isset($parent['children']) || count($parent['children']) == 0) {
1075                         $this->profiler->stopRecording();
1076                         return $parent;
1077                 }
1078
1079                 // We use a for loop to ensure we process the newly-moved items
1080                 for ($i = 0; $i < count($parent['children']); $i++) {
1081                         $child = $parent['children'][$i];
1082
1083                         if (isset($child['children']) && count($child['children'])) {
1084                                 // This helps counting only the regular posts
1085                                 $count_post_closure = function ($var) {
1086                                         $this->profiler->stopRecording();
1087                                         return $var['verb'] === Activity::POST;
1088                                 };
1089
1090                                 $child_post_count = count(array_filter($child['children'], $count_post_closure));
1091
1092                                 $remaining_post_count = count(array_filter(array_slice($parent['children'], $i), $count_post_closure));
1093
1094                                 // If there's only one child's children post and this is the last child post
1095                                 if ($child_post_count == 1 && $remaining_post_count == 1) {
1096
1097                                         // Searches the post item in the children
1098                                         $j = 0;
1099                                         while ($child['children'][$j]['verb'] !== Activity::POST && $j < count($child['children'])) {
1100                                                 $j ++;
1101                                         }
1102
1103                                         $moved_item = $child['children'][$j];
1104                                         unset($parent['children'][$i]['children'][$j]);
1105                                         $parent['children'][] = $moved_item;
1106                                 } else {
1107                                         $parent['children'][$i] = $this->smartFlattenConversation($child);
1108                                 }
1109                         }
1110                 }
1111
1112                 $this->profiler->stopRecording();
1113                 return $parent;
1114         }
1115
1116         /**
1117          * Expands a flat list of items into corresponding tree-like conversation structures.
1118          *
1119          * sort the top-level posts either on "received" or "commented", and finally
1120          * append all the items at the top level (???)
1121          *
1122          * @param array  $item_list A list of items belonging to one or more conversations
1123          * @param string $order     Either on "received" or "commented"
1124          * @return array
1125          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1126          */
1127         private function convSort(array $item_list, $order)
1128         {
1129                 $this->profiler->startRecording('rendering');
1130                 $parents = [];
1131
1132                 if (!(is_array($item_list) && count($item_list))) {
1133                         $this->profiler->stopRecording();
1134                         return $parents;
1135                 }
1136
1137                 $blocklist = $this->getBlocklist();
1138
1139                 $item_array = [];
1140
1141                 // Dedupes the item list on the uri to prevent infinite loops
1142                 foreach ($item_list as $item) {
1143                         if (in_array($item['author-id'], $blocklist)) {
1144                                 continue;
1145                         }
1146
1147                         $item_array[$item['uri-id']] = $item;
1148                 }
1149
1150                 // Extract the top level items
1151                 foreach ($item_array as $item) {
1152                         if ($item['gravity'] == GRAVITY_PARENT) {
1153                                 $parents[] = $item;
1154                         }
1155                 }
1156
1157                 if (stristr($order, 'pinned_received')) {
1158                         usort($parents, [$this, 'sortThrFeaturedReceived']);
1159                 } elseif (stristr($order, 'pinned_commented')) {
1160                         usort($parents, [$this, 'sortThrFeaturedCommented']);
1161                 } elseif (stristr($order, 'received')) {
1162                         usort($parents, [$this, 'sortThrReceived']);
1163                 } elseif (stristr($order, 'commented')) {
1164                         usort($parents, [$this, 'sortThrCommented']);
1165                 } elseif (stristr($order, 'created')) {
1166                         usort($parents, [$this, 'sortThrCreated']);
1167                 }
1168
1169                 /*
1170                 * Plucks children from the item_array, second pass collects eventual orphan
1171                 * items and add them as children of their top-level post.
1172                 */
1173                 foreach ($parents as $i => $parent) {
1174                         $parents[$i]['children'] = array_merge($this->getItemChildren($item_array, $parent, true),
1175                                 $this->getItemChildren($item_array, $parent, false));
1176                 }
1177
1178                 foreach ($parents as $i => $parent) {
1179                         $parents[$i]['children'] = $this->sortItemChildren($parents[$i]['children']);
1180                 }
1181
1182                 if (!$this->pConfig->get(local_user(), 'system', 'no_smart_threading', 0)) {
1183                         foreach ($parents as $i => $parent) {
1184                                 $parents[$i] = $this->smartFlattenConversation($parent);
1185                         }
1186                 }
1187
1188                 /// @TODO: Stop recusrsively adding all children back to the top level (!!!)
1189                 /// However, this apparently ensures responses (likes, attendance) display (?!)
1190                 foreach ($parents as $parent) {
1191                         if (count($parent['children'])) {
1192                                 $this->addChildrenToList($parent['children'], $parents);
1193                         }
1194                 }
1195
1196                 $this->profiler->stopRecording();
1197                 return $parents;
1198         }
1199
1200         /**
1201          * usort() callback to sort item arrays by featured and the received key
1202          *
1203          * @param array $a
1204          * @param array $b
1205          * @return int
1206          */
1207         private function sortThrFeaturedReceived(array $a, array $b)
1208         {
1209                 if ($b['featured'] && !$a['featured']) {
1210                         return 1;
1211                 } elseif (!$b['featured'] && $a['featured']) {
1212                         return -1;
1213                 }
1214
1215                 return strcmp($b['received'], $a['received']);
1216         }
1217
1218         /**
1219          * usort() callback to sort item arrays by featured and the received key
1220          *
1221          * @param array $a
1222          * @param array $b
1223          * @return int
1224          */
1225         private function sortThrFeaturedCommented(array $a, array $b)
1226         {
1227                 if ($b['featured'] && !$a['featured']) {
1228                         return 1;
1229                 } elseif (!$b['featured'] && $a['featured']) {
1230                         return -1;
1231                 }
1232
1233                 return strcmp($b['commented'], $a['commented']);
1234         }
1235
1236         /**
1237          * usort() callback to sort item arrays by the received key
1238          *
1239          * @param array $a
1240          * @param array $b
1241          * @return int
1242          */
1243         private function sortThrReceived(array $a, array $b)
1244         {
1245                 return strcmp($b['received'], $a['received']);
1246         }
1247
1248         /**
1249          * usort() callback to reverse sort item arrays by the received key
1250          *
1251          * @param array $a
1252          * @param array $b
1253          * @return int
1254          */
1255         private function sortThrReceivedRev(array $a, array $b)
1256         {
1257                 return strcmp($a['received'], $b['received']);
1258         }
1259
1260         /**
1261          * usort() callback to sort item arrays by the commented key
1262          *
1263          * @param array $a
1264          * @param array $b
1265          * @return int
1266          */
1267         private function sortThrCommented(array $a, array $b)
1268         {
1269                 return strcmp($b['commented'], $a['commented']);
1270         }
1271
1272         /**
1273          * usort() callback to sort item arrays by the created key
1274          *
1275          * @param array $a
1276          * @param array $b
1277          * @return int
1278          */
1279         private function sortThrCreated(array $a, array $b)
1280         {
1281                 return strcmp($b['created'], $a['created']);
1282         }
1283 }