src/Model/Post/Media.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\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\HTTPClient\Client\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 => $timeout]);
 172
 173                         // Workaround for systems that can't handle a HEAD request
 174                         if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
 175                                 $curlResult = DI::httpClient()->get($media['url'], [HttpClientOptions::TIMEOUT => $timeout]);
 176                         }
 177
 178                         if ($curlResult->isSuccess()) {
 179                                 if (empty($media['mimetype'])) {
 180                                         $media['mimetype'] = $curlResult->getHeader('Content-Type')[0] ?? '';
 181                                 }
 182                                 if (empty($media['size'])) {
 183                                         $media['size'] = (int)($curlResult->getHeader('Content-Length')[0] ?? 0);
 184                                 }
 185                         } else {
 186                                 Logger::notice('Could not fetch head', ['media' => $media]);
 187                         }
 188                 }
 189
 190                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 191
 192                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 193                         $imagedata = Images::getInfoFromURLCached($media['url']);
 194                         if (!empty($imagedata)) {
 195                                 $media['mimetype'] = $imagedata['mime'];
 196                                 $media['size'] = $imagedata['size'];
 197                                 $media['width'] = $imagedata[0];
 198                                 $media['height'] = $imagedata[1];
 199                         } else {
 200                                 Logger::notice('No image data', ['media' => $media]);
 201                         }
 202                         if (!empty($media['preview'])) {
 203                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 204                                 if (!empty($imagedata)) {
 205                                         $media['preview-width'] = $imagedata[0];
 206                                         $media['preview-height'] = $imagedata[1];
 207                                 }
 208                         }
 209                 }
 210
 211                 if ($media['type'] != self::DOCUMENT) {
 212                         $media = self::addType($media);
 213                 }
 214
 215                 if ($media['type'] == self::HTML) {
 216                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 217                         $media['preview'] = $data['images'][0]['src'] ?? null;
 218                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 219                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 220                         $media['description'] = $data['text'] ?? null;
 221                         $media['name'] = $data['title'] ?? null;
 222                         $media['author-url'] = $data['author_url'] ?? null;
 223                         $media['author-name'] = $data['author_name'] ?? null;
 224                         $media['author-image'] = $data['author_img'] ?? null;
 225                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 226                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 227                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 228                 }
 229                 return $media;
 230         }
 231
 232         /**
 233          * Fetch media data from local resources
 234          * @param array $media
 235          * @return array media with added data
 236          */
 237         private static function fetchLocalData(array $media)
 238         {
 239                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'] ?? '', $matches)) {
 240                         return $media;
 241                 }
 242                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 243                 if (!empty($photo)) {
 244                         $media['mimetype'] = $photo['type'];
 245                         $media['size'] = $photo['datasize'];
 246                         $media['width'] = $photo['width'];
 247                         $media['height'] = $photo['height'];
 248                 }
 249
 250                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['preview'] ?? '', $matches)) {
 251                         return $media;
 252                 }
 253                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 254                 if (!empty($photo)) {
 255                         $media['preview-width'] = $photo['width'];
 256                         $media['preview-height'] = $photo['height'];
 257                 }
 258
 259                 return $media;
 260         }
 261
 262         /**
 263          * Add the detected type to the media array
 264          *
 265          * @param array $data
 266          * @return array data array with the detected type
 267          */
 268         public static function addType(array $data)
 269         {
 270                 if (empty($data['mimetype'])) {
 271                         Logger::info('No MimeType provided', ['media' => $data]);
 272                         return $data;
 273                 }
 274
 275                 $type = explode('/', current(explode(';', $data['mimetype'])));
 276                 if (count($type) < 2) {
 277                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 278                         $data['type'] = self::UNKNOWN;
 279                         return $data;
 280                 }
 281
 282                 $filetype = strtolower($type[0]);
 283                 $subtype = strtolower($type[1]);
 284
 285                 if ($filetype == 'image') {
 286                         $data['type'] = self::IMAGE;
 287                 } elseif ($filetype == 'video') {
 288                         $data['type'] = self::VIDEO;
 289                 } elseif ($filetype == 'audio') {
 290                         $data['type'] = self::AUDIO;
 291                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 292                         $data['type'] = self::HTML;
 293                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 294                         $data['type'] = self::XML;
 295                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 296                         $data['type'] = self::PLAIN;
 297                 } elseif ($filetype == 'text') {
 298                         $data['type'] = self::TEXT;
 299                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 300                         $data['type'] = self::TORRENT;
 301                 } elseif ($filetype == 'application') {
 302                         $data['type'] = self::APPLICATION;
 303                 } else {
 304                         $data['type'] = self::UNKNOWN;
 305                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 306                         return $data;
 307                 }
 308
 309                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 310                 return $data;
 311         }
 312
 313         /**
 314          * Tests for path patterns that are usef for picture links in Friendica
 315          *
 316          * @param string $page    Link to the image page
 317          * @param string $preview Preview picture
 318          * @return boolean
 319          */
 320         private static function isPictureLink(string $page, string $preview)
 321         {
 322                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 323         }
 324
 325         /**
 326          * Add media links and remove them from the body
 327          *
 328          * @param integer $uriid
 329          * @param string $body
 330          * @return string Body without media links
 331          */
 332         public static function insertFromBody(int $uriid, string $body)
 333         {
 334                 // Simplify image codes
 335                 $unshared_body = $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 336
 337                 // Only remove the shared data from "real" reshares
 338                 $shared = BBCode::fetchShareAttributes($body);
 339                 if (!empty($shared['guid'])) {
 340                         $unshared_body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 341                 }
 342
 343                 $attachments = [];
 344                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 345                         foreach ($pictures as $picture) {
 346                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 347                                         continue;
 348                                 }
 349                                 $body = str_replace($picture[0], '', $body);
 350                                 $image = str_replace('-1.', '-0.', $picture[2]);
 351                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 352                                         'preview' => $picture[2], 'description' => $picture[3]];
 353                         }
 354                 }
 355
 356                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 357                         foreach ($pictures as $picture) {
 358                                 $body = str_replace($picture[0], '', $body);
 359                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 360                         }
 361                 }
 362
 363                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 364                         foreach ($pictures as $picture) {
 365                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 366                                         continue;
 367                                 }
 368                                 $body = str_replace($picture[0], '', $body);
 369                                 $image = str_replace('-1.', '-0.', $picture[2]);
 370                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 371                                         'preview' => $picture[2], 'description' => null];
 372                         }
 373                 }
 374
 375                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 376                         foreach ($pictures as $picture) {
 377                                 $body = str_replace($picture[0], '', $body);
 378                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 379                         }
 380                 }
 381
 382                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 383                         foreach ($audios as $audio) {
 384                                 $body = str_replace($audio[0], '', $body);
 385                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 386                         }
 387                 }
 388
 389                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 390                         foreach ($videos as $video) {
 391                                 $body = str_replace($video[0], '', $body);
 392                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 393                         }
 394                 }
 395
 396                 foreach ($attachments as $attachment) {
 397                         if (Post\Link::exists($uriid, $attachment['preview'] ?? $attachment['url'])) {
 398                                 continue;
 399                         }
 400
 401                         // Only store attachments that are part of the unshared body
 402                         if (Item::containsLink($unshared_body, $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
 403                                 self::insert($attachment);
 404                         }
 405                 }
 406
 407                 return trim($body);
 408         }
 409
 410         /**
 411          * Add media links from a relevant url in the body
 412          *
 413          * @param integer $uriid
 414          * @param string $body
 415          */
 416         public static function insertFromRelevantUrl(int $uriid, string $body)
 417         {
 418                 // Only remove the shared data from "real" reshares
 419                 $shared = BBCode::fetchShareAttributes($body);
 420                 if (!empty($shared['guid'])) {
 421                         // Don't look at the shared content
 422                         $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 423                 }
 424
 425                 // Remove all hashtags and mentions
 426                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 427
 428                 // Search for pure links
 429                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 430                         foreach ($matches[1] as $url) {
 431                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 432                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 433                         }
 434                 }
 435
 436                 // Search for links with descriptions
 437                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 438                         foreach ($matches[1] as $url) {
 439                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 440                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 441                         }
 442                 }
 443         }
 444
 445         /**
 446          * Add media links from the attachment field
 447          *
 448          * @param integer $uriid
 449          * @param string $body
 450          */
 451         public static function insertFromAttachmentData(int $uriid, string $body)
 452         {
 453                 // Don't look at the shared content
 454                 $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
 455
 456                 $data = BBCode::getAttachmentData($body);
 457                 if (empty($data))  {
 458                         return;
 459                 }
 460
 461                 Logger::info('Adding attachment data', ['data' => $data]);
 462                 $attachment = [
 463                         'uri-id' => $uriid,
 464                         'type' => self::HTML,
 465                         'url' => $data['url'],
 466                         'preview' => $data['preview'] ?? null,
 467                         'description' => $data['description'] ?? null,
 468                         'name' => $data['title'] ?? null,
 469                         'author-url' => $data['author_url'] ?? null,
 470                         'author-name' => $data['author_name'] ?? null,
 471                         'publisher-url' => $data['provider_url'] ?? null,
 472                         'publisher-name' => $data['provider_name'] ?? null,
 473                 ];
 474                 if (!empty($data['image'])) {
 475                         $attachment['preview'] = $data['image'];
 476                 }
 477                 self::insert($attachment);
 478         }
 479
 480         /**
 481          * Add media links from the attach field
 482          *
 483          * @param integer $uriid
 484          * @param string $attach
 485          * @return void
 486          */
 487         public static function insertFromAttachment(int $uriid, string $attach)
 488         {
 489                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 490                         return;
 491                 }
 492
 493                 foreach ($matches as $attachment) {
 494                         $media['type'] = self::DOCUMENT;
 495                         $media['uri-id'] = $uriid;
 496                         $media['url'] = $attachment[1];
 497                         $media['size'] = $attachment[2];
 498                         $media['mimetype'] = $attachment[3];
 499                         $media['description'] = $attachment[4] ?? '';
 500
 501                         self::insert($media);
 502                 }
 503         }
 504
 505         /**
 506          * Retrieves the media attachments associated with the provided item ID.
 507          *
 508          * @param int $uri_id
 509          * @param array $types
 510          * @return array
 511          * @throws \Exception
 512          */
 513         public static function getByURIId(int $uri_id, array $types = [])
 514         {
 515                 $condition = ['uri-id' => $uri_id];
 516
 517                 if (!empty($types)) {
 518                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 519                 }
 520
 521                 return DBA::selectToArray('post-media', [], $condition);
 522         }
 523
 524         /**
 525          * Checks if media attachments are associated with the provided item ID.
 526          *
 527          * @param int $uri_id
 528          * @param array $types
 529          * @return array
 530          * @throws \Exception
 531          */
 532         public static function existsByURIId(int $uri_id, array $types = [])
 533         {
 534                 $condition = ['uri-id' => $uri_id];
 535
 536                 if (!empty($types)) {
 537                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 538                 }
 539
 540                 return DBA::exists('post-media', $condition);
 541         }
 542
 543         /**
 544          * Split the attachment media in the three segments "visual", "link" and "additional"
 545          *
 546          * @param int    $uri_id
 547          * @param string $guid
 548          * @param array  $links list of links that shouldn't be added
 549          * @return array attachments
 550          */
 551         public static function splitAttachments(int $uri_id, string $guid = '', array $links = [])
 552         {
 553                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 554
 555                 $media = self::getByURIId($uri_id);
 556                 if (empty($media)) {
 557                         return $attachments;
 558                 }
 559
 560                 $heights = [];
 561                 $selected = '';
 562                 $previews = [];
 563
 564                 foreach ($media as $medium) {
 565                         foreach ($links as $link) {
 566                                 if (Strings::compareLink($link, $medium['url'])) {
 567                                         continue 2;
 568                                 }
 569                         }
 570
 571                         // Avoid adding separate media entries for previews
 572                         foreach ($previews as $preview) {
 573                                 if (Strings::compareLink($preview, $medium['url'])) {
 574                                         continue 2;
 575                                 }
 576                         }
 577
 578                         if (!empty($medium['preview'])) {
 579                                 $previews[] = $medium['preview'];
 580                         }
 581
 582                         $type = explode('/', current(explode(';', $medium['mimetype'])));
 583                         if (count($type) < 2) {
 584                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 585                                 $filetype = 'unkn';
 586                                 $subtype = 'unkn';
 587                         } else {
 588                                 $filetype = strtolower($type[0]);
 589                                 $subtype = strtolower($type[1]);
 590                         }
 591
 592                         $medium['filetype'] = $filetype;
 593                         $medium['subtype'] = $subtype;
 594
 595                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 596                                 $attachments['link'][] = $medium;
 597                                 continue;
 598                         }
 599
 600                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 601                                 in_array($filetype, ['audio', 'image'])) {
 602                                 $attachments['visual'][] = $medium;
 603                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 604                                 if (!empty($medium['height'])) {
 605                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 606                                         // Since only Peertube provides a "height" parameter, this wouldn't be executed
 607                                         // when someone for example on Mastodon was sharing multiple videos in a single post.
 608                                         $heights[$medium['height']] = $medium['url'];
 609                                         $video[$medium['url']] = $medium;
 610                                 } else {
 611                                         $attachments['visual'][] = $medium;
 612                                 }
 613                         } else {
 614                                 $attachments['additional'][] = $medium;
 615                         }
 616                 }
 617
 618                 if (!empty($heights)) {
 619                         ksort($heights);
 620                         foreach ($heights as $height => $url) {
 621                                 if (empty($selected) || $height <= 480) {
 622                                         $selected = $url;
 623                                 }
 624                         }
 625
 626                         if (!empty($selected)) {
 627                                 $attachments['visual'][] = $video[$selected];
 628                                 unset($video[$selected]);
 629                                 foreach ($video as $element) {
 630                                         $attachments['additional'][] = $element;
 631                                 }
 632                         }
 633                 }
 634
 635                 return $attachments;
 636         }
 637
 638         /**
 639          * Add media attachments to the body
 640          *
 641          * @param int $uriid
 642          * @param string $body
 643          * @return string body
 644          */
 645         public static function addAttachmentsToBody(int $uriid, string $body = '')
 646         {
 647                 if (empty($body)) {
 648                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 649                         if (!DBA::isResult($item)) {
 650                                 return '';
 651                         }
 652                         $body = $item['body'];
 653                 }
 654                 $original_body = $body;
 655
 656                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 657
 658                 foreach (self::getByURIId($uriid, [self::IMAGE, self::AUDIO, self::VIDEO]) as $media) {
 659                         if (Item::containsLink($body, $media['preview'] ?? $media['url'], $media['type'])) {
 660                                 continue;
 661                         }
 662
 663                         if ($media['type'] == self::IMAGE) {
 664                                 if (!empty($media['preview'])) {
 665                                         if (!empty($media['description'])) {
 666                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 667                                         } else {
 668                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 669                                         }
 670                                 } else {
 671                                         if (!empty($media['description'])) {
 672                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 673                                         } else {
 674                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 675                                         }
 676                                 }
 677                         } elseif ($media['type'] == self::AUDIO) {
 678                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 679                         } elseif ($media['type'] == self::VIDEO) {
 680                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 681                         }
 682                 }
 683
 684                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 685                         $body .= "\n" . $match[1];
 686                 }
 687
 688                 return $body;
 689         }
 690
 691         /**
 692          * Get preview link for given media id
 693          *
 694          * @param integer $id   media id
 695          * @param string  $size One of the Proxy::SIZE_* constants
 696          * @return string preview link
 697          */
 698         public static function getPreviewUrlForId(int $id, string $size = ''):string
 699         {
 700                 $url = DI::baseUrl() . '/photo/preview/';
 701                 switch ($size) {
 702                         case Proxy::SIZE_MICRO:
 703                                 $url .= Proxy::PIXEL_MICRO . '/';
 704                                 break;
 705                         case Proxy::SIZE_THUMB:
 706                                 $url .= Proxy::PIXEL_THUMB . '/';
 707                                 break;
 708                         case Proxy::SIZE_SMALL:
 709                                 $url .= Proxy::PIXEL_SMALL . '/';
 710                                 break;
 711                         case Proxy::SIZE_MEDIUM:
 712                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 713                                 break;
 714                         case Proxy::SIZE_LARGE:
 715                                 $url .= Proxy::PIXEL_LARGE . '/';
 716                                 break;
 717                 }
 718                 return $url . $id;
 719         }
 720
 721         /**
 722          * Get media link for given media id
 723          *
 724          * @param integer $id   media id
 725          * @param string  $size One of the Proxy::SIZE_* constants
 726          * @return string media link
 727          */
 728         public static function getUrlForId(int $id, string $size = ''):string
 729         {
 730                 $url = DI::baseUrl() . '/photo/media/';
 731                 switch ($size) {
 732                         case Proxy::SIZE_MICRO:
 733                                 $url .= Proxy::PIXEL_MICRO . '/';
 734                                 break;
 735                         case Proxy::SIZE_THUMB:
 736                                 $url .= Proxy::PIXEL_THUMB . '/';
 737                                 break;
 738                         case Proxy::SIZE_SMALL:
 739                                 $url .= Proxy::PIXEL_SMALL . '/';
 740                                 break;
 741                         case Proxy::SIZE_MEDIUM:
 742                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 743                                 break;
 744                         case Proxy::SIZE_LARGE:
 745                                 $url .= Proxy::PIXEL_LARGE . '/';
 746                                 break;
 747                 }
 748                 return $url . $id;
 749         }
 750 }