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\Photo;
  32 use Friendica\Model\Post;
  33 use Friendica\Network\HTTPClientOptions;
  34 use Friendica\Util\Images;
  35 use Friendica\Util\Network;
  36 use Friendica\Util\ParseUrl;
  37 use Friendica\Util\Proxy;
  38 use Friendica\Util\Strings;
  39
  40 /**
  41  * Class Media
  42  *
  43  * This Model class handles media interactions.
  44  * This tables stores medias (images, videos, audio files) related to posts.
  45  */
  46 class Media
  47 {
  48         const UNKNOWN     = 0;
  49         const IMAGE       = 1;
  50         const VIDEO       = 2;
  51         const AUDIO       = 3;
  52         const TEXT        = 4;
  53         const APPLICATION = 5;
  54         const TORRENT     = 16;
  55         const HTML        = 17;
  56         const XML         = 18;
  57         const PLAIN       = 19;
  58         const DOCUMENT    = 128;
  59
  60         /**
  61          * Insert a post-media record
  62          *
  63          * @param array $media
  64          * @return void
  65          */
  66         public static function insert(array $media, bool $force = false)
  67         {
  68                 if (empty($media['url']) || empty($media['uri-id']) || !isset($media['type'])) {
  69                         Logger::warning('Incomplete media data', ['media' => $media]);
  70                         return;
  71                 }
  72
  73                 if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'preview' => $media['url']])) {
  74                         Logger::info('Media already exists as preview', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  75                         return;
  76                 }
  77
  78                 // "document" has got the lowest priority. So when the same file is both attached as document
  79                 // and embedded as picture then we only store the picture or replace the document
  80                 $found = DBA::selectFirst('post-media', ['type'], ['uri-id' => $media['uri-id'], 'url' => $media['url']]);
  81                 if (!$force && !empty($found) && (($found['type'] != self::DOCUMENT) || ($media['type'] == self::DOCUMENT))) {
  82                         Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  83                         return;
  84                 }
  85
  86                 $media = self::unsetEmptyFields($media);
  87
  88                 // We are storing as fast as possible to avoid duplicated network requests
  89                 // when fetching additional information for pictures and other content.
  90                 $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  91                 Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
  92                 $stored = $media;
  93
  94                 $media = self::fetchAdditionalData($media);
  95                 $media = self::unsetEmptyFields($media);
  96
  97                 if (array_diff_assoc($media, $stored)) {
  98                         $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  99                         Logger::info('Updated media', ['result' => $result, 'media' => $media]);
 100                 } else {
 101                         Logger::info('Nothing to update', ['media' => $media]);
 102                 }
 103         }
 104
 105         /**
 106          * Remove empty media fields
 107          *
 108          * @param array $media
 109          * @return array cleaned media array
 110          */
 111         private static function unsetEmptyFields(array $media)
 112         {
 113                 $fields = ['mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'description'];
 114                 foreach ($fields as $field) {
 115                         if (empty($media[$field])) {
 116                                 unset($media[$field]);
 117                         }
 118                 }
 119                 return $media;
 120         }
 121
 122         /**
 123          * Copy attachments from one uri-id to another
 124          *
 125          * @param integer $from_uri_id
 126          * @param integer $to_uri_id
 127          * @return void
 128          */
 129         public static function copy(int $from_uri_id, int $to_uri_id)
 130         {
 131                 $attachments = self::getByURIId($from_uri_id);
 132                 foreach ($attachments as $attachment) {
 133                         $attachment['uri-id'] = $to_uri_id;
 134                         self::insert($attachment);
 135                 }
 136         }
 137
 138         /**
 139          * Creates the "[attach]" element from the given attributes
 140          *
 141          * @param string $href
 142          * @param integer $length
 143          * @param string $type
 144          * @param string $title
 145          * @return string "[attach]" element
 146          */
 147         public static function getAttachElement(string $href, int $length, string $type, string $title = '')
 148         {
 149                 $media = self::fetchAdditionalData(['type' => self::DOCUMENT, 'url' => $href,
 150                         'size' => $length, 'mimetype' => $type, 'description' => $title]);
 151
 152                 return '[attach]href="' . $media['url'] . '" length="' . $media['size'] .
 153                         '" type="' . $media['mimetype'] . '" title="' . $media['description'] . '"[/attach]';
 154         }
 155
 156         /**
 157          * Fetch additional data for the provided media array
 158          *
 159          * @param array $media
 160          * @return array media array with additional data
 161          */
 162         public static function fetchAdditionalData(array $media)
 163         {
 164                 if (Network::isLocalLink($media['url'])) {
 165                         $media = self::fetchLocalData($media);
 166                 }
 167
 168                 // Fetch the mimetype or size if missing.
 169                 if (empty($media['mimetype']) || empty($media['size'])) {
 170                         $timeout = DI::config()->get('system', 'xrd_timeout');
 171                         $curlResult = DI::httpClient()->head($media['url'], [HTTPClientOptions::TIMEOUT => $timeout]);
 172                         if ($curlResult->isSuccess()) {
 173                                 if (empty($media['mimetype'])) {
 174                                         $media['mimetype'] = $curlResult->getHeader('Content-Type')[0] ?? '';
 175                                 }
 176                                 if (empty($media['size'])) {
 177                                         $media['size'] = (int)($curlResult->getHeader('Content-Length')[0] ?? 0);
 178                                 }
 179                         } else {
 180                                 Logger::notice('Could not fetch head', ['media' => $media]);
 181                         }
 182                 }
 183
 184                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 185
 186                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 187                         $imagedata = Images::getInfoFromURLCached($media['url']);
 188                         if (!empty($imagedata)) {
 189                                 $media['mimetype'] = $imagedata['mime'];
 190                                 $media['size'] = $imagedata['size'];
 191                                 $media['width'] = $imagedata[0];
 192                                 $media['height'] = $imagedata[1];
 193                         } else {
 194                                 Logger::notice('No image data', ['media' => $media]);
 195                         }
 196                         if (!empty($media['preview'])) {
 197                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 198                                 if (!empty($imagedata)) {
 199                                         $media['preview-width'] = $imagedata[0];
 200                                         $media['preview-height'] = $imagedata[1];
 201                                 }
 202                         }
 203                 }
 204
 205                 if ($media['type'] != self::DOCUMENT) {
 206                         $media = self::addType($media);
 207                 }
 208
 209                 if ($media['type'] == self::HTML) {
 210                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 211                         $media['preview'] = $data['images'][0]['src'] ?? null;
 212                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 213                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 214                         $media['description'] = $data['text'] ?? null;
 215                         $media['name'] = $data['title'] ?? null;
 216                         $media['author-url'] = $data['author_url'] ?? null;
 217                         $media['author-name'] = $data['author_name'] ?? null;
 218                         $media['author-image'] = $data['author_img'] ?? null;
 219                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 220                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 221                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 222                 }
 223                 return $media;
 224         }
 225
 226         /**
 227          * Fetch media data from local resources
 228          * @param array $media
 229          * @return array media with added data
 230          */
 231         private static function fetchLocalData(array $media)
 232         {
 233                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'] ?? '', $matches)) {
 234                         return $media;
 235                 }
 236                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 237                 if (!empty($photo)) {
 238                         $media['mimetype'] = $photo['type'];
 239                         $media['size'] = $photo['datasize'];
 240                         $media['width'] = $photo['width'];
 241                         $media['height'] = $photo['height'];
 242                 }
 243
 244                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['preview'] ?? '', $matches)) {
 245                         return $media;
 246                 }
 247                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 248                 if (!empty($photo)) {
 249                         $media['preview-width'] = $photo['width'];
 250                         $media['preview-height'] = $photo['height'];
 251                 }
 252
 253                 return $media;
 254         }
 255
 256         /**
 257          * Add the detected type to the media array
 258          *
 259          * @param array $data
 260          * @return array data array with the detected type
 261          */
 262         public static function addType(array $data)
 263         {
 264                 if (empty($data['mimetype'])) {
 265                         Logger::info('No MimeType provided', ['media' => $data]);
 266                         return $data;
 267                 }
 268
 269                 $type = explode('/', current(explode(';', $data['mimetype'])));
 270                 if (count($type) < 2) {
 271                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 272                         $data['type'] = self::UNKNOWN;
 273                         return $data;
 274                 }
 275
 276                 $filetype = strtolower($type[0]);
 277                 $subtype = strtolower($type[1]);
 278
 279                 if ($filetype == 'image') {
 280                         $data['type'] = self::IMAGE;
 281                 } elseif ($filetype == 'video') {
 282                         $data['type'] = self::VIDEO;
 283                 } elseif ($filetype == 'audio') {
 284                         $data['type'] = self::AUDIO;
 285                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 286                         $data['type'] = self::HTML;
 287                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 288                         $data['type'] = self::XML;
 289                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 290                         $data['type'] = self::PLAIN;
 291                 } elseif ($filetype == 'text') {
 292                         $data['type'] = self::TEXT;
 293                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 294                         $data['type'] = self::TORRENT;
 295                 } elseif ($filetype == 'application') {
 296                         $data['type'] = self::APPLICATION;
 297                 } else {
 298                         $data['type'] = self::UNKNOWN;
 299                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 300                         return $data;
 301                 }
 302
 303                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 304                 return $data;
 305         }
 306
 307         /**
 308          * Tests for path patterns that are usef for picture links in Friendica
 309          *
 310          * @param string $page    Link to the image page
 311          * @param string $preview Preview picture
 312          * @return boolean
 313          */
 314         private static function isPictureLink(string $page, string $preview)
 315         {
 316                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 317         }
 318
 319         /**
 320          * Add media links and remove them from the body
 321          *
 322          * @param integer $uriid
 323          * @param string $body
 324          * @return string Body without media links
 325          */
 326         public static function insertFromBody(int $uriid, string $body)
 327         {
 328                 // Simplify image codes
 329                 $unshared_body = $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 330
 331                 // Only remove the shared data from "real" reshares
 332                 $shared = BBCode::fetchShareAttributes($body);
 333                 if (!empty($shared['guid'])) {
 334                         $unshared_body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 335                 }
 336
 337                 $attachments = [];
 338                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 339                         foreach ($pictures as $picture) {
 340                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 341                                         continue;
 342                                 }
 343                                 $body = str_replace($picture[0], '', $body);
 344                                 $image = str_replace('-1.', '-0.', $picture[2]);
 345                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 346                                         'preview' => $picture[2], 'description' => $picture[3]];
 347                         }
 348                 }
 349
 350                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 351                         foreach ($pictures as $picture) {
 352                                 $body = str_replace($picture[0], '', $body);
 353                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 354                         }
 355                 }
 356
 357                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 358                         foreach ($pictures as $picture) {
 359                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 360                                         continue;
 361                                 }
 362                                 $body = str_replace($picture[0], '', $body);
 363                                 $image = str_replace('-1.', '-0.', $picture[2]);
 364                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 365                                         'preview' => $picture[2], 'description' => null];
 366                         }
 367                 }
 368
 369                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 370                         foreach ($pictures as $picture) {
 371                                 $body = str_replace($picture[0], '', $body);
 372                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 373                         }
 374                 }
 375
 376                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 377                         foreach ($audios as $audio) {
 378                                 $body = str_replace($audio[0], '', $body);
 379                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 380                         }
 381                 }
 382
 383                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 384                         foreach ($videos as $video) {
 385                                 $body = str_replace($video[0], '', $body);
 386                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 387                         }
 388                 }
 389
 390                 foreach ($attachments as $attachment) {
 391                         if (Post\Link::exists($uriid, $attachment['preview'] ?? $attachment['url'])) {
 392                                 continue;
 393                         }
 394
 395                         // Only store attachments that are part of the unshared body
 396                         if (Item::containsLink($unshared_body, $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
 397                                 self::insert($attachment);
 398                         }
 399                 }
 400
 401                 return trim($body);
 402         }
 403
 404         /**
 405          * Add media links from a relevant url in the body
 406          *
 407          * @param integer $uriid
 408          * @param string $body
 409          */
 410         public static function insertFromRelevantUrl(int $uriid, string $body)
 411         {
 412                 // Only remove the shared data from "real" reshares
 413                 $shared = BBCode::fetchShareAttributes($body);
 414                 if (!empty($shared['guid'])) {
 415                         // Don't look at the shared content
 416                         $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 417                 }
 418
 419                 // Remove all hashtags and mentions
 420                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 421
 422                 // Search for pure links
 423                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 424                         foreach ($matches[1] as $url) {
 425                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 426                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 427                         }
 428                 }
 429
 430                 // Search for links with descriptions
 431                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 432                         foreach ($matches[1] as $url) {
 433                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 434                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 435                         }
 436                 }
 437         }
 438
 439         /**
 440          * Add media links from the attachment field
 441          *
 442          * @param integer $uriid
 443          * @param string $body
 444          */
 445         public static function insertFromAttachmentData(int $uriid, string $body)
 446         {
 447                 // Don't look at the shared content
 448                 $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 449
 450                 $data = BBCode::getAttachmentData($body);
 451                 if (empty($data))  {
 452                         return;
 453                 }
 454
 455                 Logger::info('Adding attachment data', ['data' => $data]);
 456                 $attachment = [
 457                         'uri-id' => $uriid,
 458                         'type' => self::HTML,
 459                         'url' => $data['url'],
 460                         'preview' => $data['preview'] ?? null,
 461                         'description' => $data['description'] ?? null,
 462                         'name' => $data['title'] ?? null,
 463                         'author-url' => $data['author_url'] ?? null,
 464                         'author-name' => $data['author_name'] ?? null,
 465                         'publisher-url' => $data['provider_url'] ?? null,
 466                         'publisher-name' => $data['provider_name'] ?? null,
 467                 ];
 468                 if (!empty($data['image'])) {
 469                         $attachment['preview'] = $data['image'];
 470                 }
 471                 self::insert($attachment);
 472         }
 473
 474         /**
 475          * Add media links from the attach field
 476          *
 477          * @param integer $uriid
 478          * @param string $attach
 479          * @return void
 480          */
 481         public static function insertFromAttachment(int $uriid, string $attach)
 482         {
 483                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 484                         return;
 485                 }
 486
 487                 foreach ($matches as $attachment) {
 488                         $media['type'] = self::DOCUMENT;
 489                         $media['uri-id'] = $uriid;
 490                         $media['url'] = $attachment[1];
 491                         $media['size'] = $attachment[2];
 492                         $media['mimetype'] = $attachment[3];
 493                         $media['description'] = $attachment[4] ?? '';
 494
 495                         self::insert($media);
 496                 }
 497         }
 498
 499         /**
 500          * Retrieves the media attachments associated with the provided item ID.
 501          *
 502          * @param int $uri_id
 503          * @param array $types
 504          * @return array
 505          * @throws \Exception
 506          */
 507         public static function getByURIId(int $uri_id, array $types = [])
 508         {
 509                 $condition = ['uri-id' => $uri_id];
 510
 511                 if (!empty($types)) {
 512                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 513                 }
 514
 515                 return DBA::selectToArray('post-media', [], $condition);
 516         }
 517
 518         /**
 519          * Checks if media attachments are associated with the provided item ID.
 520          *
 521          * @param int $uri_id
 522          * @param array $types
 523          * @return array
 524          * @throws \Exception
 525          */
 526         public static function existsByURIId(int $uri_id, array $types = [])
 527         {
 528                 $condition = ['uri-id' => $uri_id];
 529
 530                 if (!empty($types)) {
 531                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 532                 }
 533
 534                 return DBA::exists('post-media', $condition);
 535         }
 536
 537         /**
 538          * Split the attachment media in the three segments "visual", "link" and "additional"
 539          *
 540          * @param int    $uri_id
 541          * @param string $guid
 542          * @param array  $links list of links that shouldn't be added
 543          * @return array attachments
 544          */
 545         public static function splitAttachments(int $uri_id, string $guid = '', array $links = [])
 546         {
 547                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 548
 549                 $media = self::getByURIId($uri_id);
 550                 if (empty($media)) {
 551                         return $attachments;
 552                 }
 553
 554                 $heights = [];
 555                 $selected = '';
 556                 $previews = [];
 557
 558                 foreach ($media as $medium) {
 559                         foreach ($links as $link) {
 560                                 if (Strings::compareLink($link, $medium['url'])) {
 561                                         continue 2;
 562                                 }
 563                         }
 564
 565                         // Avoid adding separate media entries for previews
 566                         foreach ($previews as $preview) {
 567                                 if (Strings::compareLink($preview, $medium['url'])) {
 568                                         continue 2;
 569                                 }
 570                         }
 571
 572                         if (!empty($medium['preview'])) {
 573                                 $previews[] = $medium['preview'];
 574                         }
 575
 576                         $type = explode('/', current(explode(';', $medium['mimetype'])));
 577                         if (count($type) < 2) {
 578                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 579                                 $filetype = 'unkn';
 580                                 $subtype = 'unkn';
 581                         } else {
 582                                 $filetype = strtolower($type[0]);
 583                                 $subtype = strtolower($type[1]);
 584                         }
 585
 586                         $medium['filetype'] = $filetype;
 587                         $medium['subtype'] = $subtype;
 588
 589                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 590                                 $attachments['link'][] = $medium;
 591                                 continue;
 592                         }
 593
 594                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 595                                 in_array($filetype, ['audio', 'image'])) {
 596                                 $attachments['visual'][] = $medium;
 597                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 598                                 if (!empty($medium['height'])) {
 599                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 600                                         // Since only Peertube provides a "height" parameter, this wouldn't be executed
 601                                         // when someone for example on Mastodon was sharing multiple videos in a single post.
 602                                         $heights[$medium['height']] = $medium['url'];
 603                                         $video[$medium['url']] = $medium;
 604                                 } else {
 605                                         $attachments['visual'][] = $medium;
 606                                 }
 607                         } else {
 608                                 $attachments['additional'][] = $medium;
 609                         }
 610                 }
 611
 612                 if (!empty($heights)) {
 613                         ksort($heights);
 614                         foreach ($heights as $height => $url) {
 615                                 if (empty($selected) || $height <= 480) {
 616                                         $selected = $url;
 617                                 }
 618                         }
 619
 620                         if (!empty($selected)) {
 621                                 $attachments['visual'][] = $video[$selected];
 622                                 unset($video[$selected]);
 623                                 foreach ($video as $element) {
 624                                         $attachments['additional'][] = $element;
 625                                 }
 626                         }
 627                 }
 628
 629                 return $attachments;
 630         }
 631
 632         /**
 633          * Add media attachments to the body
 634          *
 635          * @param int $uriid
 636          * @param string $body
 637          * @return string body
 638          */
 639         public static function addAttachmentsToBody(int $uriid, string $body = '')
 640         {
 641                 if (empty($body)) {
 642                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 643                         if (!DBA::isResult($item)) {
 644                                 return '';
 645                         }
 646                         $body = $item['body'];
 647                 }
 648                 $original_body = $body;
 649
 650                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 651
 652                 foreach (self::getByURIId($uriid, [self::IMAGE, self::AUDIO, self::VIDEO]) as $media) {
 653                         if (Item::containsLink($body, $media['preview'] ?? $media['url'], $media['type'])) {
 654                                 continue;
 655                         }
 656
 657                         if ($media['type'] == self::IMAGE) {
 658                                 if (!empty($media['preview'])) {
 659                                         if (!empty($media['description'])) {
 660                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 661                                         } else {
 662                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 663                                         }
 664                                 } else {
 665                                         if (!empty($media['description'])) {
 666                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 667                                         } else {
 668                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 669                                         }
 670                                 }
 671                         } elseif ($media['type'] == self::AUDIO) {
 672                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 673                         } elseif ($media['type'] == self::VIDEO) {
 674                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 675                         }
 676                 }
 677
 678                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 679                         $body .= "\n" . $match[1];
 680                 }
 681
 682                 return $body;
 683         }
 684
 685         /**
 686          * Get preview link for given media id
 687          *
 688          * @param integer $id   media id
 689          * @param string  $size One of the ProxyUtils::SIZE_* constants
 690          * @return string preview link
 691          */
 692         public static function getPreviewUrlForId(int $id, string $size = ''):string
 693         {
 694                 $url = DI::baseUrl() . '/photo/preview/';
 695                 switch ($size) {
 696                         case Proxy::SIZE_MICRO:
 697                                 $url .= Proxy::PIXEL_MICRO . '/';
 698                                 break;
 699                         case Proxy::SIZE_THUMB:
 700                                 $url .= Proxy::PIXEL_THUMB . '/';
 701                                 break;
 702                         case Proxy::SIZE_SMALL:
 703                                 $url .= Proxy::PIXEL_SMALL . '/';
 704                                 break;
 705                         case Proxy::SIZE_MEDIUM:
 706                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 707                                 break;
 708                         case Proxy::SIZE_LARGE:
 709                                 $url .= Proxy::PIXEL_LARGE . '/';
 710                                 break;
 711                 }
 712                 return $url . $id;
 713         }
 714
 715         /**
 716          * Get media link for given media id
 717          *
 718          * @param integer $id   media id
 719          * @param string  $size One of the ProxyUtils::SIZE_* constants
 720          * @return string media link
 721          */
 722         public static function getUrlForId(int $id, string $size = ''):string
 723         {
 724                 $url = DI::baseUrl() . '/photo/media/';
 725                 switch ($size) {
 726                         case Proxy::SIZE_MICRO:
 727                                 $url .= Proxy::PIXEL_MICRO . '/';
 728                                 break;
 729                         case Proxy::SIZE_THUMB:
 730                                 $url .= Proxy::PIXEL_THUMB . '/';
 731                                 break;
 732                         case Proxy::SIZE_SMALL:
 733                                 $url .= Proxy::PIXEL_SMALL . '/';
 734                                 break;
 735                         case Proxy::SIZE_MEDIUM:
 736                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 737                                 break;
 738                         case Proxy::SIZE_LARGE:
 739                                 $url .= Proxy::PIXEL_LARGE . '/';
 740                                 break;
 741                 }
 742                 return $url . $id;
 743         }
 744 }