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\Protocol;
  27 use Friendica\Core\System;
  28 use Friendica\Database\Database;
  29 use Friendica\Database\DBA;
  30 use Friendica\DI;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Item;
  33 use Friendica\Model\Photo;
  34 use Friendica\Model\Post;
  35 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  36 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  37 use Friendica\Util\Images;
  38 use Friendica\Util\Network;
  39 use Friendica\Util\ParseUrl;
  40 use Friendica\Util\Proxy;
  41 use Friendica\Util\Strings;
  42
  43 /**
  44  * Class Media
  45  *
  46  * This Model class handles media interactions.
  47  * This tables stores medias (images, videos, audio files) related to posts.
  48  */
  49 class Media
  50 {
  51         const UNKNOWN     = 0;
  52         const IMAGE       = 1;
  53         const VIDEO       = 2;
  54         const AUDIO       = 3;
  55         const TEXT        = 4;
  56         const APPLICATION = 5;
  57         const TORRENT     = 16;
  58         const HTML        = 17;
  59         const XML         = 18;
  60         const PLAIN       = 19;
  61         const ACTIVITY    = 20;
  62         const DOCUMENT    = 128;
  63
  64         /**
  65          * Insert a post-media record
  66          *
  67          * @param array $media
  68          * @return void
  69          */
  70         public static function insert(array $media, bool $force = false)
  71         {
  72                 if (empty($media['url']) || empty($media['uri-id']) || !isset($media['type'])) {
  73                         Logger::warning('Incomplete media data', ['media' => $media]);
  74                         return;
  75                 }
  76
  77                 if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'preview' => $media['url']])) {
  78                         Logger::info('Media already exists as preview', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  79                         return;
  80                 }
  81
  82                 // "document" has got the lowest priority. So when the same file is both attached as document
  83                 // and embedded as picture then we only store the picture or replace the document
  84                 $found = DBA::selectFirst('post-media', ['type'], ['uri-id' => $media['uri-id'], 'url' => $media['url']]);
  85                 if (!$force && !empty($found) && (($found['type'] != self::DOCUMENT) || ($media['type'] == self::DOCUMENT))) {
  86                         Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  87                         return;
  88                 }
  89
  90                 $media = self::unsetEmptyFields($media);
  91                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
  92
  93                 // We are storing as fast as possible to avoid duplicated network requests
  94                 // when fetching additional information for pictures and other content.
  95                 $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  96                 Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
  97                 $stored = $media;
  98
  99                 $media = self::fetchAdditionalData($media);
 100                 $media = self::unsetEmptyFields($media);
 101                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
 102
 103                 if (array_diff_assoc($media, $stored)) {
 104                         $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
 105                         Logger::info('Updated media', ['result' => $result, 'media' => $media]);
 106                 } else {
 107                         Logger::info('Nothing to update', ['media' => $media]);
 108                 }
 109         }
 110
 111         /**
 112          * Remove empty media fields
 113          *
 114          * @param array $media
 115          * @return array cleaned media array
 116          */
 117         private static function unsetEmptyFields(array $media): array
 118         {
 119                 $fields = ['mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'description'];
 120                 foreach ($fields as $field) {
 121                         if (empty($media[$field])) {
 122                                 unset($media[$field]);
 123                         }
 124                 }
 125                 return $media;
 126         }
 127
 128         /**
 129          * Copy attachments from one uri-id to another
 130          *
 131          * @param integer $from_uri_id
 132          * @param integer $to_uri_id
 133          * @return void
 134          */
 135         public static function copy(int $from_uri_id, int $to_uri_id)
 136         {
 137                 $attachments = self::getByURIId($from_uri_id);
 138                 foreach ($attachments as $attachment) {
 139                         $attachment['uri-id'] = $to_uri_id;
 140                         self::insert($attachment);
 141                 }
 142         }
 143
 144         /**
 145          * Creates the "[attach]" element from the given attributes
 146          *
 147          * @param string $href
 148          * @param integer $length
 149          * @param string $type
 150          * @param string $title
 151          * @return string "[attach]" element
 152          */
 153         public static function getAttachElement(string $href, int $length, string $type, string $title = ''): string
 154         {
 155                 $media = self::fetchAdditionalData(['type' => self::DOCUMENT, 'url' => $href,
 156                         'size' => $length, 'mimetype' => $type, 'description' => $title]);
 157
 158                 return '[attach]href="' . $media['url'] . '" length="' . $media['size'] .
 159                         '" type="' . $media['mimetype'] . '" title="' . $media['description'] . '"[/attach]';
 160         }
 161
 162         /**
 163          * Fetch additional data for the provided media array
 164          *
 165          * @param array $media
 166          * @return array media array with additional data
 167          */
 168         public static function fetchAdditionalData(array $media): array
 169         {
 170                 if (Network::isLocalLink($media['url'])) {
 171                         $media = self::fetchLocalData($media);
 172                 }
 173
 174                 // Fetch the mimetype or size if missing.
 175                 if (empty($media['mimetype']) || empty($media['size'])) {
 176                         $timeout = DI::config()->get('system', 'xrd_timeout');
 177                         $curlResult = DI::httpClient()->head($media['url'], [HttpClientOptions::TIMEOUT => $timeout]);
 178
 179                         // Workaround for systems that can't handle a HEAD request
 180                         if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
 181                                 $curlResult = DI::httpClient()->get($media['url'], HttpClientAccept::DEFAULT, [HttpClientOptions::TIMEOUT => $timeout]);
 182                         }
 183
 184                         if ($curlResult->isSuccess()) {
 185                                 if (empty($media['mimetype'])) {
 186                                         $media['mimetype'] = $curlResult->getHeader('Content-Type')[0] ?? '';
 187                                 }
 188                                 if (empty($media['size'])) {
 189                                         $media['size'] = (int)($curlResult->getHeader('Content-Length')[0] ?? 0);
 190                                 }
 191                         } else {
 192                                 Logger::notice('Could not fetch head', ['media' => $media]);
 193                         }
 194                 }
 195
 196                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 197
 198                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 199                         $imagedata = Images::getInfoFromURLCached($media['url']);
 200                         if ($imagedata) {
 201                                 $media['mimetype'] = $imagedata['mime'];
 202                                 $media['size'] = $imagedata['size'];
 203                                 $media['width'] = $imagedata[0];
 204                                 $media['height'] = $imagedata[1];
 205                         } else {
 206                                 Logger::notice('No image data', ['media' => $media]);
 207                         }
 208                         if (!empty($media['preview'])) {
 209                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 210                                 if ($imagedata) {
 211                                         $media['preview-width'] = $imagedata[0];
 212                                         $media['preview-height'] = $imagedata[1];
 213                                 }
 214                         }
 215                 }
 216
 217                 if ($media['type'] != self::DOCUMENT) {
 218                         $media = self::addType($media);
 219                 }
 220
 221                 if (in_array($media['type'], [self::TEXT, self::APPLICATION, self::HTML, self::XML, self::PLAIN])) {
 222                         $media = self::addActivity($media);
 223                 }
 224
 225                 if ($media['type'] == self::HTML) {
 226                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 227                         $media['preview'] = $data['images'][0]['src'] ?? null;
 228                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 229                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 230                         $media['description'] = $data['text'] ?? null;
 231                         $media['name'] = $data['title'] ?? null;
 232                         $media['author-url'] = $data['author_url'] ?? null;
 233                         $media['author-name'] = $data['author_name'] ?? null;
 234                         $media['author-image'] = $data['author_img'] ?? null;
 235                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 236                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 237                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 238                 }
 239                 return $media;
 240         }
 241
 242         /**
 243          * Adds the activity type if the media entry is linked to an activity
 244          *
 245          * @param array $media
 246          * @return array
 247          */
 248         private static function addActivity(array $media): array
 249         {
 250                 $id = Item::fetchByLink($media['url']);
 251                 if (empty($id)) {
 252                         return $media;
 253                 }
 254
 255                 $item = Post::selectFirst([], ['id' => $id, 'network' => Protocol::FEDERATED]);
 256                 if (empty($item['id'])) {
 257                         Logger::debug('Not a federated activity', ['id' => $id, 'uri-id' => $media['uri-id'], 'url' => $media['url']]);
 258                         return $media;
 259                 }
 260
 261                 if (!empty($item['plink']) && Strings::compareLink($item['plink'], $media['url']) &&
 262                         parse_url($item['plink'], PHP_URL_HOST) != parse_url($item['uri'], PHP_URL_HOST)) {
 263                         Logger::debug('Not a link to an activity', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 264                         return $media;
 265                 }
 266
 267                 if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
 268                         $media['mimetype'] = 'application/activity+json';
 269                 } elseif ($item['network'] == Protocol::DIASPORA) {
 270                         $media['mimetype'] = 'application/xml';
 271                 } else {
 272                         $media['mimetype'] = '';
 273                 }
 274
 275                 $contact = Contact::getById($item['author-id'], ['avatar', 'gsid']);
 276                 if (!empty($contact['gsid'])) {
 277                         $gserver = DBA::selectFirst('gserver', ['url', 'site_name'], ['id' => $contact['gsid']]);
 278                 }
 279
 280                 $media['type'] = self::ACTIVITY;
 281                 $media['media-uri-id'] = $item['uri-id'];
 282                 $media['height'] = null;
 283                 $media['width'] = null;
 284                 $media['size'] = null;
 285                 $media['preview'] = null;
 286                 $media['preview-height'] = null;
 287                 $media['preview-width'] = null;
 288                 $media['description'] = $item['body'];
 289                 $media['name'] = $item['title'];
 290                 $media['author-url'] = $item['author-link'];
 291                 $media['author-name'] = $item['author-name'];
 292                 $media['author-image'] = $contact['avatar'] ?? $item['author-avatar'];
 293                 $media['publisher-url'] = $gserver['url'] ?? null;
 294                 $media['publisher-name'] = $gserver['site_name'] ?? null;
 295                 $media['publisher-image'] = null;
 296
 297                 Logger::debug('Activity detected', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 298                 return $media;
 299         }
 300
 301         /**
 302          * Fetch media data from local resources
 303          * @param array $media
 304          * @return array media with added data
 305          */
 306         private static function fetchLocalData(array $media): array
 307         {
 308                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'] ?? '', $matches)) {
 309                         return $media;
 310                 }
 311                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 312                 if (!empty($photo)) {
 313                         $media['mimetype'] = $photo['type'];
 314                         $media['size'] = $photo['datasize'];
 315                         $media['width'] = $photo['width'];
 316                         $media['height'] = $photo['height'];
 317                 }
 318
 319                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['preview'] ?? '', $matches)) {
 320                         return $media;
 321                 }
 322                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 323                 if (!empty($photo)) {
 324                         $media['preview-width'] = $photo['width'];
 325                         $media['preview-height'] = $photo['height'];
 326                 }
 327
 328                 return $media;
 329         }
 330
 331         /**
 332          * Add the detected type to the media array
 333          *
 334          * @param array $data
 335          * @return array data array with the detected type
 336          */
 337         public static function addType(array $data): array
 338         {
 339                 if (empty($data['mimetype'])) {
 340                         Logger::info('No MimeType provided', ['media' => $data]);
 341                         return $data;
 342                 }
 343
 344                 $type = explode('/', current(explode(';', $data['mimetype'])));
 345                 if (count($type) < 2) {
 346                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 347                         $data['type'] = self::UNKNOWN;
 348                         return $data;
 349                 }
 350
 351                 $filetype = strtolower($type[0]);
 352                 $subtype = strtolower($type[1]);
 353
 354                 if ($filetype == 'image') {
 355                         $data['type'] = self::IMAGE;
 356                 } elseif ($filetype == 'video') {
 357                         $data['type'] = self::VIDEO;
 358                 } elseif ($filetype == 'audio') {
 359                         $data['type'] = self::AUDIO;
 360                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 361                         $data['type'] = self::HTML;
 362                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 363                         $data['type'] = self::XML;
 364                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 365                         $data['type'] = self::PLAIN;
 366                 } elseif ($filetype == 'text') {
 367                         $data['type'] = self::TEXT;
 368                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 369                         $data['type'] = self::TORRENT;
 370                 } elseif ($filetype == 'application') {
 371                         $data['type'] = self::APPLICATION;
 372                 } else {
 373                         $data['type'] = self::UNKNOWN;
 374                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 375                         return $data;
 376                 }
 377
 378                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 379                 return $data;
 380         }
 381
 382         /**
 383          * Tests for path patterns that are usef for picture links in Friendica
 384          *
 385          * @param string $page    Link to the image page
 386          * @param string $preview Preview picture
 387          * @return boolean
 388          */
 389         private static function isPictureLink(string $page, string $preview): bool
 390         {
 391                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 392         }
 393
 394         /**
 395          * Add media links and remove them from the body
 396          *
 397          * @param integer $uriid
 398          * @param string $body
 399          * @return string Body without media links
 400          */
 401         public static function insertFromBody(int $uriid, string $body): string
 402         {
 403                 // Simplify image codes
 404                 $unshared_body = $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 405
 406                 // Only remove the shared data from "real" reshares
 407                 if (BBCode::isNativeReshare($body)) {
 408                         $unshared_body = BBCode::removeSharedData($body);
 409                 }
 410
 411                 $attachments = [];
 412                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 413                         foreach ($pictures as $picture) {
 414                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 415                                         continue;
 416                                 }
 417                                 $body = str_replace($picture[0], '', $body);
 418                                 $image = str_replace('-1.', '-0.', $picture[2]);
 419                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 420                                         'preview' => $picture[2], 'description' => $picture[3]];
 421                         }
 422                 }
 423
 424                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 425                         foreach ($pictures as $picture) {
 426                                 $body = str_replace($picture[0], '', $body);
 427                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 428                         }
 429                 }
 430
 431                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 432                         foreach ($pictures as $picture) {
 433                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 434                                         continue;
 435                                 }
 436                                 $body = str_replace($picture[0], '', $body);
 437                                 $image = str_replace('-1.', '-0.', $picture[2]);
 438                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 439                                         'preview' => $picture[2], 'description' => null];
 440                         }
 441                 }
 442
 443                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 444                         foreach ($pictures as $picture) {
 445                                 $body = str_replace($picture[0], '', $body);
 446                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 447                         }
 448                 }
 449
 450                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 451                         foreach ($audios as $audio) {
 452                                 $body = str_replace($audio[0], '', $body);
 453                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 454                         }
 455                 }
 456
 457                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 458                         foreach ($videos as $video) {
 459                                 $body = str_replace($video[0], '', $body);
 460                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 461                         }
 462                 }
 463
 464                 foreach ($attachments as $attachment) {
 465                         if (Post\Link::exists($uriid, $attachment['preview'] ?? $attachment['url'])) {
 466                                 continue;
 467                         }
 468
 469                         // Only store attachments that are part of the unshared body
 470                         if (Item::containsLink($unshared_body, $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
 471                                 self::insert($attachment);
 472                         }
 473                 }
 474
 475                 return trim($body);
 476         }
 477
 478         /**
 479          * Add media links from a relevant url in the body
 480          *
 481          * @param integer $uriid
 482          * @param string $body
 483          * @return void
 484          */
 485         public static function insertFromRelevantUrl(int $uriid, string $body)
 486         {
 487                 // Only remove the shared data from "real" reshares
 488                 if (BBCode::isNativeReshare($body)) {
 489                         // Don't look at the shared content
 490                         $body = BBCode::removeSharedData($body);
 491                 }
 492
 493                 // Remove all hashtags and mentions
 494                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 495
 496                 // Search for pure links
 497                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 498                         foreach ($matches[1] as $url) {
 499                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 500                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 501                         }
 502                 }
 503
 504                 // Search for links with descriptions
 505                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 506                         foreach ($matches[1] as $url) {
 507                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 508                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 509                         }
 510                 }
 511         }
 512
 513         /**
 514          * Add media links from the attachment field
 515          *
 516          * @param integer $uriid
 517          * @param string $body
 518          * @return void
 519          */
 520         public static function insertFromAttachmentData(int $uriid, string $body)
 521         {
 522                 // Don't look at the shared content
 523                 $body = BBCode::removeSharedData($body);
 524
 525                 $data = BBCode::getAttachmentData($body);
 526                 if (empty($data))  {
 527                         return;
 528                 }
 529
 530                 Logger::info('Adding attachment data', ['data' => $data]);
 531                 $attachment = [
 532                         'uri-id' => $uriid,
 533                         'type' => self::HTML,
 534                         'url' => $data['url'],
 535                         'preview' => $data['preview'] ?? null,
 536                         'description' => $data['description'] ?? null,
 537                         'name' => $data['title'] ?? null,
 538                         'author-url' => $data['author_url'] ?? null,
 539                         'author-name' => $data['author_name'] ?? null,
 540                         'publisher-url' => $data['provider_url'] ?? null,
 541                         'publisher-name' => $data['provider_name'] ?? null,
 542                 ];
 543                 if (!empty($data['image'])) {
 544                         $attachment['preview'] = $data['image'];
 545                 }
 546                 self::insert($attachment);
 547         }
 548
 549         /**
 550          * Add media links from the attach field
 551          *
 552          * @param integer $uriid
 553          * @param string $attach
 554          * @return void
 555          */
 556         public static function insertFromAttachment(int $uriid, string $attach)
 557         {
 558                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 559                         return;
 560                 }
 561
 562                 foreach ($matches as $attachment) {
 563                         $media['type'] = self::DOCUMENT;
 564                         $media['uri-id'] = $uriid;
 565                         $media['url'] = $attachment[1];
 566                         $media['size'] = $attachment[2];
 567                         $media['mimetype'] = $attachment[3];
 568                         $media['description'] = $attachment[4] ?? '';
 569
 570                         self::insert($media);
 571                 }
 572         }
 573
 574         /**
 575          * Retrieves the media attachments associated with the provided item ID.
 576          *
 577          * @param int $uri_id URI id
 578          * @param array $types Media types
 579          * @return array|bool Array on success, false on error
 580          * @throws \Exception
 581          */
 582         public static function getByURIId(int $uri_id, array $types = [])
 583         {
 584                 $condition = ['uri-id' => $uri_id];
 585
 586                 if (!empty($types)) {
 587                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 588                 }
 589
 590                 return DBA::selectToArray('post-media', [], $condition, ['order' => ['id']]);
 591         }
 592
 593         /**
 594          * Checks if media attachments are associated with the provided item ID.
 595          *
 596          * @param int $uri_id URI id
 597          * @param array $types Media types
 598          * @return bool Whether media attachment exists
 599          * @throws \Exception
 600          */
 601         public static function existsByURIId(int $uri_id, array $types = []): bool
 602         {
 603                 $condition = ['uri-id' => $uri_id];
 604
 605                 if (!empty($types)) {
 606                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 607                 }
 608
 609                 return DBA::exists('post-media', $condition);
 610         }
 611
 612         /**
 613          * Split the attachment media in the three segments "visual", "link" and "additional"
 614          *
 615          * @param int    $uri_id URI id
 616          * @param string $guid GUID
 617          * @param array  $links list of links that shouldn't be added
 618          * @param bool   $has_media
 619          * @return array attachments
 620          */
 621         public static function splitAttachments(int $uri_id, string $guid = '', array $links = [], bool $has_media = true): array
 622         {
 623                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 624
 625                 if (!$has_media) {
 626                         return $attachments;
 627                 }
 628
 629                 $media = self::getByURIId($uri_id);
 630                 if (empty($media)) {
 631                         return $attachments;
 632                 }
 633
 634                 $heights = [];
 635                 $selected = '';
 636                 $previews = [];
 637
 638                 foreach ($media as $medium) {
 639                         foreach ($links as $link) {
 640                                 if (Strings::compareLink($link, $medium['url'])) {
 641                                         continue 2;
 642                                 }
 643                         }
 644
 645                         // Avoid adding separate media entries for previews
 646                         foreach ($previews as $preview) {
 647                                 if (Strings::compareLink($preview, $medium['url'])) {
 648                                         continue 2;
 649                                 }
 650                         }
 651
 652                         if (!empty($medium['preview'])) {
 653                                 $previews[] = $medium['preview'];
 654                         }
 655
 656                         $type = explode('/', current(explode(';', $medium['mimetype'])));
 657                         if (count($type) < 2) {
 658                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 659                                 $filetype = 'unkn';
 660                                 $subtype = 'unkn';
 661                         } else {
 662                                 $filetype = strtolower($type[0]);
 663                                 $subtype = strtolower($type[1]);
 664                         }
 665
 666                         $medium['filetype'] = $filetype;
 667                         $medium['subtype'] = $subtype;
 668
 669                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 670                                 $attachments['link'][] = $medium;
 671                                 continue;
 672                         }
 673
 674                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 675                                 in_array($filetype, ['audio', 'image'])) {
 676                                 $attachments['visual'][] = $medium;
 677                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 678                                 if (!empty($medium['height'])) {
 679                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 680                                         // Since only Peertube provides a "height" parameter, this wouldn't be executed
 681                                         // when someone for example on Mastodon was sharing multiple videos in a single post.
 682                                         $heights[$medium['height']] = $medium['url'];
 683                                         $video[$medium['url']] = $medium;
 684                                 } else {
 685                                         $attachments['visual'][] = $medium;
 686                                 }
 687                         } else {
 688                                 $attachments['additional'][] = $medium;
 689                         }
 690                 }
 691
 692                 if (!empty($heights)) {
 693                         ksort($heights);
 694                         foreach ($heights as $height => $url) {
 695                                 if (empty($selected) || $height <= 480) {
 696                                         $selected = $url;
 697                                 }
 698                         }
 699
 700                         if (!empty($selected)) {
 701                                 $attachments['visual'][] = $video[$selected];
 702                                 unset($video[$selected]);
 703                                 foreach ($video as $element) {
 704                                         $attachments['additional'][] = $element;
 705                                 }
 706                         }
 707                 }
 708
 709                 return $attachments;
 710         }
 711
 712         /**
 713          * Add media attachments to the body
 714          *
 715          * @param int    $uriid
 716          * @param string $body
 717          * @param array  $types
 718          *
 719          * @return string body
 720          */
 721         public static function addAttachmentsToBody(int $uriid, string $body = '', array $types = [self::IMAGE, self::AUDIO, self::VIDEO]): string
 722         {
 723                 if (empty($body)) {
 724                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 725                         if (!DBA::isResult($item)) {
 726                                 return '';
 727                         }
 728                         $body = $item['body'];
 729                 }
 730                 $original_body = $body;
 731
 732                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 733
 734                 foreach (self::getByURIId($uriid, $types) as $media) {
 735                         if (Item::containsLink($body, $media['preview'] ?? $media['url'], $media['type'])) {
 736                                 continue;
 737                         }
 738
 739                         if ($media['type'] == self::IMAGE) {
 740                                 if (!empty($media['preview'])) {
 741                                         if (!empty($media['description'])) {
 742                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 743                                         } else {
 744                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 745                                         }
 746                                 } else {
 747                                         if (!empty($media['description'])) {
 748                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 749                                         } else {
 750                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 751                                         }
 752                                 }
 753                         } elseif ($media['type'] == self::AUDIO) {
 754                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 755                         } elseif ($media['type'] == self::VIDEO) {
 756                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 757                         }
 758                 }
 759
 760                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 761                         $body .= "\n" . $match[1];
 762                 }
 763
 764                 return $body;
 765         }
 766
 767         /**
 768          * Get preview link for given media id
 769          *
 770          * @param integer $id   media id
 771          * @param string  $size One of the Proxy::SIZE_* constants
 772          * @return string preview link
 773          */
 774         public static function getPreviewUrlForId(int $id, string $size = ''): string
 775         {
 776                 $url = DI::baseUrl() . '/photo/preview/';
 777                 switch ($size) {
 778                         case Proxy::SIZE_MICRO:
 779                                 $url .= Proxy::PIXEL_MICRO . '/';
 780                                 break;
 781                         case Proxy::SIZE_THUMB:
 782                                 $url .= Proxy::PIXEL_THUMB . '/';
 783                                 break;
 784                         case Proxy::SIZE_SMALL:
 785                                 $url .= Proxy::PIXEL_SMALL . '/';
 786                                 break;
 787                         case Proxy::SIZE_MEDIUM:
 788                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 789                                 break;
 790                         case Proxy::SIZE_LARGE:
 791                                 $url .= Proxy::PIXEL_LARGE . '/';
 792                                 break;
 793                 }
 794                 return $url . $id;
 795         }
 796
 797         /**
 798          * Get media link for given media id
 799          *
 800          * @param integer $id   media id
 801          * @param string  $size One of the Proxy::SIZE_* constants
 802          * @return string media link
 803          */
 804         public static function getUrlForId(int $id, string $size = ''): string
 805         {
 806                 $url = DI::baseUrl() . '/photo/media/';
 807                 switch ($size) {
 808                         case Proxy::SIZE_MICRO:
 809                                 $url .= Proxy::PIXEL_MICRO . '/';
 810                                 break;
 811                         case Proxy::SIZE_THUMB:
 812                                 $url .= Proxy::PIXEL_THUMB . '/';
 813                                 break;
 814                         case Proxy::SIZE_SMALL:
 815                                 $url .= Proxy::PIXEL_SMALL . '/';
 816                                 break;
 817                         case Proxy::SIZE_MEDIUM:
 818                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 819                                 break;
 820                         case Proxy::SIZE_LARGE:
 821                                 $url .= Proxy::PIXEL_LARGE . '/';
 822                                 break;
 823                 }
 824                 return $url . $id;
 825         }
 826 }