src/Content/Item.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\Content\Text\BBCode;
  25 use Friendica\Content\Text\HTML;
  26 use Friendica\Core\Hook;
  27 use Friendica\Core\L10n;
  28 use Friendica\Core\Logger;
  29 use Friendica\Core\Protocol;
  30 use Friendica\Core\Session\Capability\IHandleUserSessions;
  31 use Friendica\Core\System;
  32 use Friendica\Database\DBA;
  33 use Friendica\Model\Contact;
  34 use Friendica\Model\Group;
  35 use Friendica\Model\Item as ItemModel;
  36 use Friendica\Model\Photo;
  37 use Friendica\Model\Tag;
  38 use Friendica\Model\Post;
  39 use Friendica\Protocol\Activity;
  40 use Friendica\Protocol\Diaspora;
  41 use Friendica\Util\Profiler;
  42 use Friendica\Util\Proxy;
  43 use Friendica\Util\XML;
  44
  45 /**
  46  * A content helper class for displaying items
  47  */
  48 class Item
  49 {
  50         /** @var Activity */
  51         private $activity;
  52         /** @var L10n */
  53         private $l10n;
  54         /** @var Profiler */
  55         private $profiler;
  56         /** @var IHandleUserSessions */
  57         private $userSession;
  58
  59         public function __construct(Profiler $profiler, Activity $activity, L10n $l10n, IHandleUserSessions $userSession)
  60         {
  61                 $this->profiler    = $profiler;
  62                 $this->activity    = $activity;
  63                 $this->l10n        = $l10n;
  64                 $this->userSession = $userSession;
  65         }
  66
  67         /**
  68          * Return array with details for categories and folders for an item
  69          *
  70          * @param array $item
  71          * @param int   $uid
  72          * @return [array, array]
  73          *
  74          * [
  75          *      [ // categories array
  76          *          {
  77          *               'name': 'category name',
  78          *               'removeurl': 'url to remove this category',
  79          *               'first': 'is the first in this array? true/false',
  80          *               'last': 'is the last in this array? true/false',
  81          *           } ,
  82          *           ....
  83          *       ],
  84          *       [ //folders array
  85          *                      {
  86          *               'name': 'folder name',
  87          *               'removeurl': 'url to remove this folder',
  88          *               'first': 'is the first in this array? true/false',
  89          *               'last': 'is the last in this array? true/false',
  90          *           } ,
  91          *           ....
  92          *       ]
  93          *  ]
  94          */
  95         public function determineCategoriesTerms(array $item, int $uid = 0): array
  96         {
  97                 $categories = [];
  98                 $folders = [];
  99                 $first = true;
 100
 101                 $uid = $item['uid'] ?: $uid;
 102
 103                 if (empty($item['has-categories'])) {
 104                         return [$categories, $folders];
 105                 }
 106
 107                 foreach (Post\Category::getArrayByURIId($item['uri-id'], $uid, Post\Category::CATEGORY) as $savedFolderName) {
 108                         if (!empty($item['author-link'])) {
 109                                 $url = $item['author-link'] . "?category=" . rawurlencode($savedFolderName);
 110                         } else {
 111                                 $url = '#';
 112                         }
 113                         $categories[] = [
 114                                 'name' => $savedFolderName,
 115                                 'url' => $url,
 116                                 'removeurl' => $this->userSession->getLocalUserId() == $uid ? 'filerm/' . $item['id'] . '?cat=' . rawurlencode($savedFolderName) : '',
 117                                 'first' => $first,
 118                                 'last' => false
 119                         ];
 120                         $first = false;
 121                 }
 122
 123                 if (count($categories)) {
 124                         $categories[count($categories) - 1]['last'] = true;
 125                 }
 126
 127                 if ($this->userSession->getLocalUserId() == $uid) {
 128                         foreach (Post\Category::getArrayByURIId($item['uri-id'], $uid, Post\Category::FILE) as $savedFolderName) {
 129                                 $folders[] = [
 130                                         'name' => $savedFolderName,
 131                                         'url' => "#",
 132                                         'removeurl' => $this->userSession->getLocalUserId() == $uid ? 'filerm/' . $item['id'] . '?term=' . rawurlencode($savedFolderName) : '',
 133                                         'first' => $first,
 134                                         'last' => false
 135                                 ];
 136                                 $first = false;
 137                         }
 138                 }
 139
 140                 if (count($folders)) {
 141                         $folders[count($folders) - 1]['last'] = true;
 142                 }
 143
 144                 return [$categories, $folders];
 145         }
 146
 147         /**
 148          * This function removes the tag $tag from the text $body and replaces it with
 149          * the appropriate link.
 150          *
 151          * @param string $body        the text to replace the tag in
 152          * @param int    $profile_uid the user id to replace the tag for (0 = anyone)
 153          * @param string $tag         the tag to replace
 154          * @param string $network     The network of the post
 155          *
 156          * @return array|bool ['replaced' => $replaced, 'contact' => $contact] or "false" on if already replaced
 157          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 158          * @throws \ImagickException
 159          */
 160         public static function replaceTag(string &$body, int $profile_uid, string $tag, string $network = '')
 161         {
 162                 $replaced = false;
 163
 164                 //is it a person tag?
 165                 if (Tag::isType($tag, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION)) {
 166                         $tag_type = substr($tag, 0, 1);
 167                         //is it already replaced?
 168                         if (strpos($tag, '[url=')) {
 169                                 return $replaced;
 170                         }
 171
 172                         //get the person's name
 173                         $name = substr($tag, 1);
 174
 175                         // Sometimes the tag detection doesn't seem to work right
 176                         // This is some workaround
 177                         $nameparts = explode(' ', $name);
 178                         $name = $nameparts[0];
 179
 180                         // Try to detect the contact in various ways
 181                         if (strpos($name, 'http://') || strpos($name, '@')) {
 182                                 $contact = Contact::getByURLForUser($name, $profile_uid);
 183                         } else {
 184                                 $contact = false;
 185                                 $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
 186
 187                                 if (strrpos($name, '+')) {
 188                                         // Is it in format @nick+number?
 189                                         $tagcid = intval(substr($name, strrpos($name, '+') + 1));
 190                                         $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
 191                                 }
 192
 193                                 // select someone by nick in the current network
 194                                 if (!DBA::isResult($contact) && ($network != '')) {
 195                                         $condition = ["`nick` = ? AND `network` = ? AND `uid` = ?",
 196                                                 $name, $network, $profile_uid];
 197                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 198                                 }
 199
 200                                 // select someone by attag in the current network
 201                                 if (!DBA::isResult($contact) && ($network != '')) {
 202                                         $condition = ["`attag` = ? AND `network` = ? AND `uid` = ?",
 203                                                 $name, $network, $profile_uid];
 204                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 205                                 }
 206
 207                                 //select someone by name in the current network
 208                                 if (!DBA::isResult($contact) && ($network != '')) {
 209                                         $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
 210                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 211                                 }
 212
 213                                 // select someone by nick in any network
 214                                 if (!DBA::isResult($contact)) {
 215                                         $condition = ["`nick` = ? AND `uid` = ?", $name, $profile_uid];
 216                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 217                                 }
 218
 219                                 // select someone by attag in any network
 220                                 if (!DBA::isResult($contact)) {
 221                                         $condition = ["`attag` = ? AND `uid` = ?", $name, $profile_uid];
 222                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 223                                 }
 224
 225                                 // select someone by name in any network
 226                                 if (!DBA::isResult($contact)) {
 227                                         $condition = ['name' => $name, 'uid' => $profile_uid];
 228                                         $contact = DBA::selectFirst('contact', $fields, $condition);
 229                                 }
 230                         }
 231
 232                         // Check if $contact has been successfully loaded
 233                         if (DBA::isResult($contact)) {
 234                                 $profile = $contact['url'];
 235                                 $newname = ($contact['name'] ?? '') ?: $contact['nick'];
 236                         }
 237
 238                         //if there is an url for this persons profile
 239                         if (isset($profile) && ($newname != '')) {
 240                                 $replaced = true;
 241                                 // create profile link
 242                                 $profile = str_replace(',', '%2c', $profile);
 243                                 $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
 244                                 $body = str_replace($tag_type . $name, $newtag, $body);
 245                         }
 246                 }
 247
 248                 return ['replaced' => $replaced, 'contact' => $contact];
 249         }
 250
 251         /**
 252          * Render actions localized
 253          *
 254          * @param array $item
 255          * @return void
 256          * @throws ImagickException
 257          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 258          */
 259         public function localize(array &$item)
 260         {
 261                 $this->profiler->startRecording('rendering');
 262                 /// @todo The following functionality needs to be cleaned up.
 263                 if (!empty($item['verb'])) {
 264                         $xmlhead = '<?xml version="1.0" encoding="UTF-8" ?>';
 265
 266                         if ($this->activity->match($item['verb'], Activity::TAG)) {
 267                                 $fields = ['author-id', 'author-link', 'author-name', 'author-network',
 268                                         'verb', 'object-type', 'resource-id', 'body', 'plink'];
 269                                 $obj = Post::selectFirst($fields, ['uri' => $item['parent-uri']]);
 270                                 if (!DBA::isResult($obj)) {
 271                                         $this->profiler->stopRecording();
 272                                         return;
 273                                 }
 274
 275                                 $author_arr = [
 276                                         'uid' => 0,
 277                                         'id' => $item['author-id'],
 278                                         'network' => $item['author-network'],
 279                                         'url' => $item['author-link'],
 280                                 ];
 281                                 $author  = '[url=' . Contact::magicLinkByContact($author_arr) . ']' . $item['author-name'] . '[/url]';
 282
 283                                 $author_arr = [
 284                                         'uid' => 0,
 285                                         'id' => $obj['author-id'],
 286                                         'network' => $obj['author-network'],
 287                                         'url' => $obj['author-link'],
 288                                 ];
 289                                 $objauthor  = '[url=' . Contact::magicLinkByContact($author_arr) . ']' . $obj['author-name'] . '[/url]';
 290
 291                                 switch ($obj['verb']) {
 292                                         case Activity::POST:
 293                                                 switch ($obj['object-type']) {
 294                                                         case Activity\ObjectType::EVENT:
 295                                                                 $post_type = $this->l10n->t('event');
 296                                                                 break;
 297                                                         default:
 298                                                                 $post_type = $this->l10n->t('status');
 299                                                 }
 300                                                 break;
 301
 302                                         default:
 303                                                 if ($obj['resource-id']) {
 304                                                         $post_type = $this->l10n->t('photo');
 305                                                         $m=[]; preg_match("/\[url=([^]]*)\]/", $obj['body'], $m);
 306                                                         $rr['plink'] = $m[1];
 307                                                 } else {
 308                                                         $post_type = $this->l10n->t('status');
 309                                                 }
 310                                                 // Let's break everthing ... ;-)
 311                                                 break;
 312                                 }
 313                                 $plink = '[url=' . $obj['plink'] . ']' . $post_type . '[/url]';
 314
 315                                 $parsedobj = XML::parseString($xmlhead . $item['object']);
 316
 317                                 $tag = sprintf('#[url=%s]%s[/url]', $parsedobj->id, $parsedobj->content);
 318                                 $item['body'] = $this->l10n->t('%1$s tagged %2$s\'s %3$s with %4$s', $author, $objauthor, $plink, $tag);
 319                         }
 320                 }
 321
 322                 $this->profiler->stopRecording();
 323         }
 324
 325         /**
 326          * Renders photo menu based on item
 327          *
 328          * @param array $item
 329          * @param string $formSecurityToken
 330          * @return string
 331          */
 332         public function photoMenu(array $item, string $formSecurityToken): string
 333         {
 334                 $this->profiler->startRecording('rendering');
 335                 $sub_link = $contact_url = $pm_url = $status_link = '';
 336                 $photos_link = $posts_link = $block_link = $ignore_link = '';
 337
 338                 if ($this->userSession->getLocalUserId() && $this->userSession->getLocalUserId() == $item['uid'] && $item['gravity'] == ItemModel::GRAVITY_PARENT && !$item['self'] && !$item['mention']) {
 339                         $sub_link = 'javascript:doFollowThread(' . $item['id'] . '); return false;';
 340                 }
 341
 342                 $author = [
 343                         'uid' => 0,
 344                         'id' => $item['author-id'],
 345                         'network' => $item['author-network'],
 346                         'url' => $item['author-link'],
 347                 ];
 348                 $profile_link = Contact::magicLinkByContact($author, $item['author-link']);
 349                 $sparkle = (strpos($profile_link, 'redir/') === 0);
 350
 351                 $cid = 0;
 352                 $pcid = $item['author-id'];
 353                 $network = '';
 354                 $rel = 0;
 355                 $condition = ['uid' => $this->userSession->getLocalUserId(), 'uri-id' => $item['author-uri-id']];
 356                 $contact = DBA::selectFirst('contact', ['id', 'network', 'rel'], $condition);
 357                 if (DBA::isResult($contact)) {
 358                         $cid = $contact['id'];
 359                         $network = $contact['network'];
 360                         $rel = $contact['rel'];
 361                 }
 362
 363                 if ($sparkle) {
 364                         $status_link = $profile_link . '/status';
 365                         $photos_link = str_replace('/profile/', '/photos/', $profile_link);
 366                         $profile_link = $profile_link . '/profile';
 367                 }
 368
 369                 if (!empty($pcid)) {
 370                         $contact_url = 'contact/' . $pcid;
 371                         $posts_link  = $contact_url . '/posts';
 372                         $block_link  = $item['self'] ? '' : $contact_url . '/block?t=' . $formSecurityToken;
 373                         $ignore_link = $item['self'] ? '' : $contact_url . '/ignore?t=' . $formSecurityToken;
 374                 }
 375
 376                 if ($cid && !$item['self']) {
 377                         $contact_url = 'contact/' . $cid;
 378                         $posts_link  = $contact_url . '/posts';
 379
 380                         if (in_array($network, [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA])) {
 381                                 $pm_url = 'message/new/' . $cid;
 382                         }
 383                 }
 384
 385                 if ($this->userSession->getLocalUserId()) {
 386                         $menu = [
 387                                 $this->l10n->t('Follow Thread') => $sub_link,
 388                                 $this->l10n->t('View Status') => $status_link,
 389                                 $this->l10n->t('View Profile') => $profile_link,
 390                                 $this->l10n->t('View Photos') => $photos_link,
 391                                 $this->l10n->t('Network Posts') => $posts_link,
 392                                 $this->l10n->t('View Contact') => $contact_url,
 393                                 $this->l10n->t('Send PM') => $pm_url,
 394                                 $this->l10n->t('Block') => $block_link,
 395                                 $this->l10n->t('Ignore') => $ignore_link
 396                         ];
 397
 398                         if (!empty($item['language'])) {
 399                                 $menu[$this->l10n->t('Languages')] = 'javascript:alert(\'' . ItemModel::getLanguageMessage($item) . '\');';
 400                         }
 401
 402                         if ((($cid == 0) || ($rel == Contact::FOLLOWER)) &&
 403                                 in_array($item['network'], Protocol::FEDERATED)) {
 404                                 $menu[$this->l10n->t('Connect/Follow')] = 'follow?url=' . urlencode($item['author-link']) . '&auto=1';
 405                         }
 406                 } else {
 407                         $menu = [$this->l10n->t('View Profile') => $item['author-link']];
 408                 }
 409
 410                 $args = ['item' => $item, 'menu' => $menu];
 411
 412                 Hook::callAll('item_photo_menu', $args);
 413
 414                 $menu = $args['menu'];
 415
 416                 $o = '';
 417                 foreach ($menu as $k => $v) {
 418                         if (strpos($v, 'javascript:') === 0) {
 419                                 $v = substr($v, 11);
 420                                 $o .= '<li role="menuitem"><a onclick="' . $v . '">' . $k . '</a></li>' . PHP_EOL;
 421                         } elseif ($v) {
 422                                 $o .= '<li role="menuitem"><a href="' . $v . '">' . $k . '</a></li>' . PHP_EOL;
 423                         }
 424                 }
 425                 $this->profiler->stopRecording();
 426                 return $o;
 427         }
 428
 429         /**
 430          * Checks if the activity is visible to current user
 431          *
 432          * @param array $item Activity item
 433          * @return bool Whether the item is visible to the user
 434          */
 435         public function isVisibleActivity(array $item): bool
 436         {
 437                 // Empty verb or hidden?
 438                 if (empty($item['verb']) || $this->activity->isHidden($item['verb'])) {
 439                         return false;
 440                 }
 441
 442                 // Check conditions
 443                 return (!($this->activity->match($item['verb'], Activity::FOLLOW) &&
 444                         $item['object-type'] === Activity\ObjectType::NOTE &&
 445                         empty($item['self']) &&
 446                         $item['uid'] == $this->userSession->getLocalUserId())
 447                 );
 448         }
 449
 450         public function expandTags(array $item, bool $setPermissions = false): array
 451         {
 452                 // Look for any tags and linkify them
 453                 $item['inform'] = '';
 454                 $private_forum  = false;
 455                 $private_id     = null;
 456                 $only_to_forum  = false;
 457                 $forum_contact  = [];
 458                 $receivers      = [];
 459
 460                 // Convert mentions in the body to a unified format
 461                 $item['body'] = BBCode::setMentions($item['body'], $item['uid'], $item['network']);
 462
 463                 // Search for forum mentions
 464                 foreach (Tag::getFromBody($item['body'], Tag::TAG_CHARACTER[Tag::MENTION] . Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]) as $tag) {
 465                         $contact = Contact::getByURLForUser($tag[2], $item['uid']);
 466                         if (empty($contact)) {
 467                                 continue;
 468                         }
 469
 470                         $receivers[] = $contact['id'];
 471
 472                         if (!empty($item['inform'])) {
 473                                 $item['inform'] .= ',';
 474                         }
 475                         $item['inform'] .= 'cid:' . $contact['id'];
 476
 477                         if (($item['gravity'] == ItemModel::GRAVITY_COMMENT) || empty($contact['cid']) || ($contact['contact-type'] != Contact::TYPE_COMMUNITY)) {
 478                                 continue;
 479                         }
 480
 481                         if (!empty($contact['prv']) || ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
 482                                 $private_forum = $contact['prv'];
 483                                 $only_to_forum = ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
 484                                 $private_id = $contact['id'];
 485                                 $forum_contact = $contact;
 486                                 Logger::info('Private forum or exclusive mention', ['url' => $tag[2], 'mention' => $tag[1]]);
 487                         } elseif ($item['allow_cid'] == '<' . $contact['id'] . '>') {
 488                                 $private_forum = false;
 489                                 $only_to_forum = true;
 490                                 $private_id = $contact['id'];
 491                                 $forum_contact = $contact;
 492                                 Logger::info('Public forum', ['url' => $tag[2], 'mention' => $tag[1]]);
 493                         } else {
 494                                 Logger::info('Post with forum mention will not be converted to a forum post', ['url' => $tag[2], 'mention' => $tag[1]]);
 495                         }
 496                 }
 497                 Logger::info('Got inform', ['inform' => $item['inform']]);
 498
 499                 if (($item['gravity'] == ItemModel::GRAVITY_PARENT) && !empty($forum_contact) && ($private_forum || $only_to_forum)) {
 500                         // we tagged a forum in a top level post. Now we change the post
 501                         $item['private'] = $private_forum ? ItemModel::PRIVATE : ItemModel::UNLISTED;
 502
 503                         if ($only_to_forum) {
 504                                 $item['postopts'] = '';
 505                         }
 506
 507                         $item['deny_cid'] = '';
 508                         $item['deny_gid'] = '';
 509
 510                         if ($private_forum) {
 511                                 $item['allow_cid'] = '<' . $private_id . '>';
 512                                 $item['allow_gid'] = '<' . Group::getIdForForum($forum_contact['id']) . '>';
 513                         } else {
 514                                 $item['allow_cid'] = '';
 515                                 $item['allow_gid'] = '';
 516                         }
 517                 } elseif ($setPermissions && ($item['gravity'] == ItemModel::GRAVITY_PARENT)) {
 518                         if (empty($receivers)) {
 519                                 // For security reasons direct posts without any receiver will be posts to yourself
 520                                 $self = Contact::selectFirst(['id'], ['uid' => $item['uid'], 'self' => true]);
 521                                 $receivers[] = $self['id'];
 522                         }
 523
 524                         $item['private']   = ItemModel::PRIVATE;
 525                         $item['allow_cid'] = '';
 526                         $item['allow_gid'] = '';
 527                         $item['deny_cid']  = '';
 528                         $item['deny_gid']  = '';
 529
 530                         foreach ($receivers as $receiver) {
 531                                 $item['allow_cid'] .= '<' . $receiver . '>';
 532                         }
 533                 }
 534                 return $item;
 535         }
 536
 537         public function getAuthorAvatar(array $item): string
 538         {
 539                 if (in_array($item['network'], [Protocol::FEED, Protocol::MAIL])) {
 540                         $author_avatar  = $item['contact-id'];
 541                         $author_updated = '';
 542                         $author_thumb   = $item['contact-avatar'];
 543                 } else {
 544                         $author_avatar  = $item['author-id'];
 545                         $author_updated = $item['author-updated'];
 546                         $author_thumb   = $item['author-avatar'];
 547                 }
 548
 549
 550                 if (empty($author_thumb) || Photo::isPhotoURI($author_thumb)) {
 551                         $author_thumb = Contact::getAvatarUrlForId($author_avatar, Proxy::SIZE_THUMB, $author_updated);
 552                 }
 553
 554                 return $author_thumb;
 555         }
 556
 557         public function getOwnerAvatar(array $item): string
 558         {
 559                 if (in_array($item['network'], [Protocol::FEED, Protocol::MAIL])) {
 560                         $owner_avatar  = $item['contact-id'];
 561                         $owner_updated = '';
 562                         $owner_thumb   = $item['contact-avatar'];
 563                 } else {
 564                         $owner_avatar   = $item['owner-id'];
 565                         $owner_updated  = $item['owner-updated'];
 566                         $owner_thumb    = $item['owner-avatar'];
 567                 }
 568
 569                 if (empty($owner_thumb) || Photo::isPhotoURI($owner_thumb)) {
 570                         $owner_thumb = Contact::getAvatarUrlForId($owner_avatar, Proxy::SIZE_THUMB, $owner_updated);
 571                 }
 572
 573                 return $owner_thumb;
 574         }
 575
 576         /**
 577          * Add a share block for the given url
 578          *
 579          * @param string $url
 580          * @param integer $uid
 581          * @param bool $add_media
 582          * @return string
 583          */
 584         public function createSharedPostByUrl(string $url, int $uid = 0, bool $add_media = false): string
 585         {
 586                 if (!empty($uid)) {
 587                         $id = ItemModel::searchByLink($url, $uid);
 588                 }
 589
 590                 if (empty($id)) {
 591                         $id = ItemModel::fetchByLink($url);
 592                 }
 593
 594                 if (!$id) {
 595                         Logger::notice('Post could not be fetched.', ['url' => $url, 'uid' => $uid, 'callstack' => System::callstack()]);
 596                         return '';
 597                 }
 598
 599                 Logger::debug('Fetched shared post', ['id' => $id, 'url' => $url, 'uid' => $uid, 'callstack' => System::callstack()]);
 600
 601                 $shared_item = Post::selectFirst(['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network'], ['id' => $id]);
 602                 if (!DBA::isResult($shared_item)) {
 603                         Logger::warning('Post does not exist.', ['id' => $id, 'url' => $url, 'uid' => $uid]);
 604                         return '';
 605                 }
 606
 607                 return $this->createSharedBlockByArray($shared_item, $add_media);
 608         }
 609
 610         /**
 611          * Add a share block for the given uri-id
 612          *
 613          * @param integer $UriId
 614          * @param integer $uid
 615          * @param bool $add_media
 616          * @return string
 617          */
 618         public function createSharedPostByUriId(int $UriId, int $uid = 0, bool $add_media = false): string
 619         {
 620                 $fields = ['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network'];
 621                 $shared_item = Post::selectFirst($fields, ['uri-id' => $UriId, 'uid' => [$uid, 0], 'private' => [ItemModel::PUBLIC, ItemModel::UNLISTED]]);
 622                 if (!DBA::isResult($shared_item)) {
 623                         Logger::notice('Post does not exist.', ['uri-id' => $UriId, 'uid' => $uid]);
 624                         return '';
 625                 }
 626
 627                 return $this->createSharedBlockByArray($shared_item, $add_media);
 628         }
 629
 630         /**
 631          * Add a share block for the given guid
 632          *
 633          * @param string $guid
 634          * @param integer $uid
 635          * @param bool $add_media
 636          * @return string
 637          */
 638         public function createSharedPostByGuid(string $guid, int $uid = 0, string $host = '', bool $add_media = false): string
 639         {
 640                 $fields = ['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network'];
 641                 $shared_item = Post::selectFirst($fields, ['guid' => $guid, 'uid' => [$uid, 0], 'private' => [ItemModel::PUBLIC, ItemModel::UNLISTED]]);
 642
 643                 if (!DBA::isResult($shared_item) && !empty($host) && Diaspora::storeByGuid($guid, $host, true)) {
 644                         Logger::debug('Fetched post', ['guid' => $guid, 'host' => $host, 'uid' => $uid]);
 645                         $shared_item = Post::selectFirst($fields, ['guid' => $guid, 'uid' => [$uid, 0], 'private' => [ItemModel::PUBLIC, ItemModel::UNLISTED]]);
 646                 } elseif (DBA::isResult($shared_item)) {
 647                         Logger::debug('Found existing post', ['guid' => $guid, 'host' => $host, 'uid' => $uid]);
 648                 }
 649
 650                 if (!DBA::isResult($shared_item)) {
 651                         Logger::notice('Post does not exist.', ['guid' => $guid, 'host' => $host, 'uid' => $uid]);
 652                         return '';
 653                 }
 654
 655                 return $this->createSharedBlockByArray($shared_item, $add_media);
 656         }
 657
 658         /**
 659          * Add a share block for the given item array
 660          *
 661          * @param array $item
 662          * @param bool $add_media
 663          * @return string
 664          */
 665         public function createSharedBlockByArray(array $item, bool $add_media = false): string
 666         {
 667                 if ($item['network'] == Protocol::FEED) {
 668                         return PageInfo::getFooterFromUrl($item['plink']);
 669                 } elseif (!in_array($item['network'] ?? '', Protocol::FEDERATED)) {
 670                         $item['guid'] = '';
 671                         $item['uri']  = '';
 672                         $item['body'] = Post\Media::addAttachmentsToBody($item['uri-id'], $item['body']);
 673                 } elseif ($add_media) {
 674                         $item['body'] = Post\Media::addAttachmentsToBody($item['uri-id'], $item['body']);
 675                 }
 676
 677                 $shared_content = BBCode::getShareOpeningTag($item['author-name'], $item['author-link'], $item['author-avatar'], $item['plink'], $item['created'], $item['guid'], $item['uri']);
 678
 679                 if (!empty($item['title'])) {
 680                         $shared_content .= '[h3]' . $item['title'] . "[/h3]\n";
 681                 }
 682
 683                 $shared = ItemModel::getShareArray($item);
 684
 685                 // If it is a reshared post then reformat it to avoid display problems with two share elements
 686                 if (!empty($shared)) {
 687                         if (!empty($shared['guid']) && ($encaspulated_share = self::createSharedPostByGuid($shared['guid'], 0, '', $add_media))) {
 688                                 $item['body'] = preg_replace("/\[share.*?\](.*)\[\/share\]/ism", $encaspulated_share, $item['body']);
 689                         }
 690
 691                         $item['body'] = HTML::toBBCode(BBCode::convertForUriId($item['uri-id'], $item['body'], BBCode::ACTIVITYPUB));
 692                 }
 693
 694                 $shared_content .= $item['body'] . '[/share]';
 695
 696                 return $shared_content;
 697         }
 698 }