src/Model/Post/Media.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, 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\Model\Post;
  23
  24 use Friendica\Content\Text\BBCode;
  25 use Friendica\Core\Logger;
  26 use Friendica\Core\System;
  27 use Friendica\Database\Database;
  28 use Friendica\Database\DBA;
  29 use Friendica\DI;
  30 use Friendica\Model\Item;
  31 use Friendica\Model\Post;
  32 use Friendica\Util\Images;
  33 use Friendica\Util\ParseUrl;
  34 use Friendica\Util\Strings;
  35
  36 /**
  37  * Class Media
  38  *
  39  * This Model class handles media interactions.
  40  * This tables stores medias (images, videos, audio files) related to posts.
  41  */
  42 class Media
  43 {
  44         const UNKNOWN     = 0;
  45         const IMAGE       = 1;
  46         const VIDEO       = 2;
  47         const AUDIO       = 3;
  48         const TEXT        = 4;
  49         const APPLICATION = 5;
  50         const TORRENT     = 16;
  51         const HTML        = 17;
  52         const XML         = 18;
  53         const PLAIN       = 19;
  54         const DOCUMENT    = 128;
  55
  56         /**
  57          * Insert a post-media record
  58          *
  59          * @param array $media
  60          * @return void
  61          */
  62         public static function insert(array $media, bool $force = false)
  63         {
  64                 if (empty($media['url']) || empty($media['uri-id']) || !isset($media['type'])) {
  65                         Logger::warning('Incomplete media data', ['media' => $media]);
  66                         return;
  67                 }
  68
  69                 if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'preview' => $media['url']])) {
  70                         Logger::info('Media already exists as preview', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  71                         return;
  72                 }
  73
  74                 // "document" has got the lowest priority. So when the same file is both attached as document
  75                 // and embedded as picture then we only store the picture or replace the document
  76                 $found = DBA::selectFirst('post-media', ['type'], ['uri-id' => $media['uri-id'], 'url' => $media['url']]);
  77                 if (!$force && !empty($found) && (($found['type'] != self::DOCUMENT) || ($media['type'] == self::DOCUMENT))) {
  78                         Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  79                         return;
  80                 }
  81
  82                 $media = self::unsetEmptyFields($media);
  83
  84                 // We are storing as fast as possible to avoid duplicated network requests
  85                 // when fetching additional information for pictures and other content.
  86                 $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  87                 Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
  88                 $stored = $media;
  89
  90                 $media = self::fetchAdditionalData($media);
  91                 $media = self::unsetEmptyFields($media);
  92
  93                 if (array_diff_assoc($media, $stored)) {
  94                         $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  95                         Logger::info('Updated media', ['result' => $result, 'media' => $media]);
  96                 } else {
  97                         Logger::info('Nothing to update', ['media' => $media]);
  98                 }
  99         }
 100
 101         /**
 102          * Remove empty media fields
 103          *
 104          * @param array $media
 105          * @return array cleaned media array
 106          */
 107         private static function unsetEmptyFields(array $media)
 108         {
 109                 $fields = ['mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'description'];
 110                 foreach ($fields as $field) {
 111                         if (empty($media[$field])) {
 112                                 unset($media[$field]);
 113                         }
 114                 }
 115                 return $media;
 116         }
 117
 118         /**
 119          * Copy attachments from one uri-id to another
 120          *
 121          * @param integer $from_uri_id
 122          * @param integer $to_uri_id
 123          * @return void
 124          */
 125         public static function copy(int $from_uri_id, int $to_uri_id)
 126         {
 127                 $attachments = self::getByURIId($from_uri_id);
 128                 foreach ($attachments as $attachment) {
 129                         $attachment['uri-id'] = $to_uri_id;
 130                         self::insert($attachment);
 131                 }
 132         }
 133
 134         /**
 135          * Creates the "[attach]" element from the given attributes
 136          *
 137          * @param string $href
 138          * @param integer $length
 139          * @param string $type
 140          * @param string $title
 141          * @return string "[attach]" element
 142          */
 143         public static function getAttachElement(string $href, int $length, string $type, string $title = '')
 144         {
 145                 $media = self::fetchAdditionalData(['type' => self::DOCUMENT, 'url' => $href,
 146                         'size' => $length, 'mimetype' => $type, 'description' => $title]);
 147
 148                 return '[attach]href="' . $media['url'] . '" length="' . $media['size'] .
 149                         '" type="' . $media['mimetype'] . '" title="' . $media['description'] . '"[/attach]';
 150         }
 151
 152         /**
 153          * Fetch additional data for the provided media array
 154          *
 155          * @param array $media
 156          * @return array media array with additional data
 157          */
 158         public static function fetchAdditionalData(array $media)
 159         {
 160                 // Fetch the mimetype or size if missing.
 161                 if (empty($media['mimetype']) || empty($media['size'])) {
 162                         $timeout = DI::config()->get('system', 'xrd_timeout');
 163                         $curlResult = DI::httpRequest()->head($media['url'], ['timeout' => $timeout]);
 164                         if ($curlResult->isSuccess()) {
 165                                 if (empty($media['mimetype'])) {
 166                                         $media['mimetype'] = $curlResult->getHeader('Content-Type');
 167                                 }
 168                                 if (empty($media['size'])) {
 169                                         $media['size'] = (int)$curlResult->getHeader('Content-Length');
 170                                 }
 171                         } else {
 172                                 Logger::notice('Could not fetch head', ['media' => $media]);
 173                         }
 174                 }
 175
 176                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 177
 178                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 179                         $imagedata = Images::getInfoFromURLCached($media['url']);
 180                         if (!empty($imagedata)) {
 181                                 $media['mimetype'] = $imagedata['mime'];
 182                                 $media['size'] = $imagedata['size'];
 183                                 $media['width'] = $imagedata[0];
 184                                 $media['height'] = $imagedata[1];
 185                         } else {
 186                                 Logger::notice('No image data', ['media' => $media]);
 187                         }
 188                         if (!empty($media['preview'])) {
 189                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 190                                 if (!empty($imagedata)) {
 191                                         $media['preview-width'] = $imagedata[0];
 192                                         $media['preview-height'] = $imagedata[1];
 193                                 }
 194                         }
 195                 }
 196
 197                 if ($media['type'] != self::DOCUMENT) {
 198                         $media = self::addType($media);
 199                 }
 200
 201                 if ($media['type'] == self::HTML) {
 202                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 203                         $media['preview'] = $data['images'][0]['src'] ?? null;
 204                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 205                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 206                         $media['description'] = $data['text'] ?? null;
 207                         $media['name'] = $data['title'] ?? null;
 208                         $media['author-url'] = $data['author_url'] ?? null;
 209                         $media['author-name'] = $data['author_name'] ?? null;
 210                         $media['author-image'] = $data['author_img'] ?? null;
 211                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 212                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 213                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 214                 }
 215                 return $media;
 216         }
 217
 218         /**
 219          * Add the detected type to the media array
 220          *
 221          * @param array $data
 222          * @return array data array with the detected type
 223          */
 224         public static function addType(array $data)
 225         {
 226                 if (empty($data['mimetype'])) {
 227                         Logger::info('No MimeType provided', ['media' => $data]);
 228                         return $data;
 229                 }
 230
 231                 $type = explode('/', current(explode(';', $data['mimetype'])));
 232                 if (count($type) < 2) {
 233                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 234                         $data['type'] = self::UNKNOWN;
 235                         return $data;
 236                 }
 237
 238                 $filetype = strtolower($type[0]);
 239                 $subtype = strtolower($type[1]);
 240
 241                 if ($filetype == 'image') {
 242                         $data['type'] = self::IMAGE;
 243                 } elseif ($filetype == 'video') {
 244                         $data['type'] = self::VIDEO;
 245                 } elseif ($filetype == 'audio') {
 246                         $data['type'] = self::AUDIO;
 247                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 248                         $data['type'] = self::HTML;
 249                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 250                         $data['type'] = self::XML;
 251                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 252                         $data['type'] = self::PLAIN;
 253                 } elseif ($filetype == 'text') {
 254                         $data['type'] = self::TEXT;
 255                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 256                         $data['type'] = self::TORRENT;
 257                 } elseif ($filetype == 'application') {
 258                         $data['type'] = self::APPLICATION;
 259                 } else {
 260                         $data['type'] = self::UNKNOWN;
 261                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 262                         return $data;
 263                 }
 264
 265                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 266                 return $data;
 267         }
 268
 269         /**
 270          * Tests for path patterns that are usef for picture links in Friendica
 271          *
 272          * @param string $page    Link to the image page
 273          * @param string $preview Preview picture
 274          * @return boolean
 275          */
 276         private static function isPictureLink(string $page, string $preview)
 277         {
 278                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 279         }
 280
 281         /**
 282          * Add media links and remove them from the body
 283          *
 284          * @param integer $uriid
 285          * @param string $body
 286          * @return string Body without media links
 287          */
 288         public static function insertFromBody(int $uriid, string $body)
 289         {
 290                 // Simplify image codes
 291                 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 292
 293                 $unshared_body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 294
 295                 $attachments = [];
 296                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 297                         foreach ($pictures as $picture) {
 298                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 299                                         continue;
 300                                 }
 301                                 $body = str_replace($picture[0], '', $body);
 302                                 $image = str_replace('-1.', '-0.', $picture[2]);
 303                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 304                                         'preview' => $picture[2], 'description' => $picture[3]];
 305                         }
 306                 }
 307
 308                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 309                         foreach ($pictures as $picture) {
 310                                 $body = str_replace($picture[0], '', $body);
 311                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 312                         }
 313                 }
 314
 315                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 316                         foreach ($pictures as $picture) {
 317                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 318                                         continue;
 319                                 }
 320                                 $body = str_replace($picture[0], '', $body);
 321                                 $image = str_replace('-1.', '-0.', $picture[2]);
 322                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 323                                         'preview' => $picture[2], 'description' => null];
 324                         }
 325                 }
 326
 327                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 328                         foreach ($pictures as $picture) {
 329                                 $body = str_replace($picture[0], '', $body);
 330                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 331                         }
 332                 }
 333
 334                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 335                         foreach ($audios as $audio) {
 336                                 $body = str_replace($audio[0], '', $body);
 337                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 338                         }
 339                 }
 340
 341                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 342                         foreach ($videos as $video) {
 343                                 $body = str_replace($video[0], '', $body);
 344                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 345                         }
 346                 }
 347
 348                 foreach ($attachments as $attachment) {
 349                         // Only store attachments that are part of the unshared body
 350                         if (strpos($unshared_body, $attachment['url']) !== false) {
 351                                 self::insert($attachment);
 352                         }
 353                 }
 354
 355                 return trim($body);
 356         }
 357
 358         /**
 359          * Add media links from a relevant url in the body
 360          *
 361          * @param integer $uriid
 362          * @param string $body
 363          */
 364         public static function insertFromRelevantUrl(int $uriid, string $body)
 365         {
 366                 // Don't look at the shared content
 367                 $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 368
 369                 // Remove all hashtags and mentions
 370                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 371
 372                 // Search for pure links
 373                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 374                         foreach ($matches[1] as $url) {
 375                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 376                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 377                         }
 378                 }
 379
 380                 // Search for links with descriptions
 381                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 382                         foreach ($matches[1] as $url) {
 383                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 384                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 385                         }
 386                 }
 387         }
 388
 389         /**
 390          * Add media links from the attachment field
 391          *
 392          * @param integer $uriid
 393          * @param string $body
 394          */
 395         public static function insertFromAttachmentData(int $uriid, string $body)
 396         {
 397                 // Don't look at the shared content
 398                 $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 399
 400                 $data = BBCode::getAttachmentData($body);
 401                 if (empty($data))  {
 402                         return;
 403                 }
 404
 405                 Logger::info('Adding attachment data', ['data' => $data]);
 406                 $attachment = [
 407                         'uri-id' => $uriid,
 408                         'type' => self::HTML,
 409                         'url' => $data['url'],
 410                         'preview' => $data['preview'] ?? null,
 411                         'description' => $data['description'] ?? null,
 412                         'name' => $data['title'] ?? null,
 413                         'author-url' => $data['author_url'] ?? null,
 414                         'author-name' => $data['author_name'] ?? null,
 415                         'publisher-url' => $data['provider_url'] ?? null,
 416                         'publisher-name' => $data['provider_name'] ?? null,
 417                 ];
 418                 if (!empty($data['image'])) {
 419                         $attachment['preview'] = $data['image'];
 420                 }
 421                 self::insert($attachment);
 422         }
 423
 424         /**
 425          * Add media links from the attach field
 426          *
 427          * @param integer $uriid
 428          * @param string $attach
 429          * @return void
 430          */
 431         public static function insertFromAttachment(int $uriid, string $attach)
 432         {
 433                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 434                         return;
 435                 }
 436
 437                 foreach ($matches as $attachment) {
 438                         $media['type'] = self::DOCUMENT;
 439                         $media['uri-id'] = $uriid;
 440                         $media['url'] = $attachment[1];
 441                         $media['size'] = $attachment[2];
 442                         $media['mimetype'] = $attachment[3];
 443                         $media['description'] = $attachment[4] ?? '';
 444
 445                         self::insert($media);
 446                 }
 447         }
 448
 449         /**
 450          * Retrieves the media attachments associated with the provided item ID.
 451          *
 452          * @param int $uri_id
 453          * @param array $types
 454          * @return array
 455          * @throws \Exception
 456          */
 457         public static function getByURIId(int $uri_id, array $types = [])
 458         {
 459                 $condition = ['uri-id' => $uri_id];
 460
 461                 if (!empty($types)) {
 462                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 463                 }
 464
 465                 return DBA::selectToArray('post-media', [], $condition);
 466         }
 467
 468         /**
 469          * Checks if media attachments are associated with the provided item ID.
 470          *
 471          * @param int $uri_id
 472          * @param array $types
 473          * @return array
 474          * @throws \Exception
 475          */
 476         public static function existsByURIId(int $uri_id, array $types = [])
 477         {
 478                 $condition = ['uri-id' => $uri_id];
 479
 480                 if (!empty($types)) {
 481                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 482                 }
 483
 484                 return DBA::exists('post-media', $condition);
 485         }
 486
 487         /**
 488          * Split the attachment media in the three segments "visual", "link" and "additional"
 489          *
 490          * @param int    $uri_id
 491          * @param string $guid
 492          * @param array  $links ist of links that shouldn't be added
 493          * @return array attachments
 494          */
 495         public static function splitAttachments(int $uri_id, string $guid = '', array $links = [])
 496         {
 497                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 498
 499                 $media = self::getByURIId($uri_id);
 500                 if (empty($media)) {
 501                         return $attachments;
 502                 }
 503
 504                 $height = 0;
 505                 $selected = '';
 506                 $previews = [];
 507
 508                 foreach ($media as $medium) {
 509                         foreach ($links as $link) {
 510                                 if (Strings::compareLink($link, $medium['url'])) {
 511                                         continue 2;
 512                                 }
 513                         }
 514
 515                         // Avoid adding separate media entries for previews
 516                         foreach ($previews as $preview) {
 517                                 if (Strings::compareLink($preview, $medium['url'])) {
 518                                         continue 2;
 519                                 }
 520                         }
 521
 522                         if (!empty($medium['preview'])) {
 523                                 $previews[] = $medium['preview'];
 524                         }
 525
 526                         $type = explode('/', current(explode(';', $medium['mimetype'])));
 527                         if (count($type) < 2) {
 528                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 529                                 $filetype = 'unkn';
 530                                 $subtype = 'unkn';
 531                         } else {
 532                                 $filetype = strtolower($type[0]);
 533                                 $subtype = strtolower($type[1]);
 534                         }
 535
 536                         $medium['filetype'] = $filetype;
 537                         $medium['subtype'] = $subtype;
 538
 539                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 540                                 $attachments['link'][] = $medium;
 541                                 continue;
 542                         }
 543
 544                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 545                                 in_array($filetype, ['audio', 'image'])) {
 546                                 $attachments['visual'][] = $medium;
 547                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 548                                 if (strpos($medium['url'], $guid) !== false) {
 549                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 550                                         // By checking against the GUID we also ensure to only work this way on Peertube posts.
 551                                         // This wouldn't be executed when someone for example on Mastodon was sharing multiple videos in a single post.
 552                                         if (empty($height) || ($height > $medium['height']) && ($medium['height'] >= 480)) {
 553                                                 $height = $medium['height'];
 554                                                 $selected = $medium['url'];
 555                                         }
 556                                         $video[$medium['url']] = $medium;
 557                                 } else {
 558                                         $attachments['visual'][] = $medium;
 559                                 }
 560                         } else {
 561                                 $attachments['additional'][] = $medium;
 562                         }
 563                 }
 564                 if (!empty($selected)) {
 565                         $attachments['visual'][] = $video[$selected];
 566                         unset($video[$selected]);
 567                         foreach ($video as $element) {
 568                                 $attachments['additional'][] = $element;
 569                         }
 570                 }
 571                 return $attachments;
 572         }
 573
 574         /**
 575          * Add media attachments to the body
 576          *
 577          * @param int $uriid
 578          * @param string $body
 579          * @return string body
 580          */
 581         public static function addAttachmentsToBody(int $uriid, string $body = '')
 582         {
 583                 if (empty($body)) {
 584                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 585                         if (!DBA::isResult($item)) {
 586                                 return '';
 587                         }
 588                         $body = $item['body'];
 589                 }
 590                 $original_body = $body;
 591
 592                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 593
 594                 foreach (self::getByURIId($uriid, [self::IMAGE, self::AUDIO, self::VIDEO]) as $media) {
 595                         if (Item::containsLink($body, $media['url'])) {
 596                                 continue;
 597                         }
 598
 599                         if ($media['type'] == self::IMAGE) {
 600                                 if (!empty($media['preview'])) {
 601                                         if (!empty($media['description'])) {
 602                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 603                                         } else {
 604                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 605                                         }
 606                                 } else {
 607                                         if (!empty($media['description'])) {
 608                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 609                                         } else {
 610                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 611                                         }
 612                                 }
 613                         } elseif ($media['type'] == self::AUDIO) {
 614                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 615                         } elseif ($media['type'] == self::VIDEO) {
 616                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 617                         }
 618                 }
 619
 620                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 621                         $body .= "\n" . $match[1];
 622                 }
 623
 624                 return $body;
 625         }
 626 }