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 ACCOUNT     = 21;
  63         const DOCUMENT    = 128;
  64
  65         /**
  66          * Insert a post-media record
  67          *
  68          * @param array $media
  69          * @return void
  70          */
  71         public static function insert(array $media, bool $force = false)
  72         {
  73                 if (empty($media['url']) || empty($media['uri-id']) || !isset($media['type'])) {
  74                         Logger::warning('Incomplete media data', ['media' => $media]);
  75                         return;
  76                 }
  77
  78                 if (DBA::exists('post-media', ['uri-id' => $media['uri-id'], 'preview' => $media['url']])) {
  79                         Logger::info('Media already exists as preview', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  80                         return;
  81                 }
  82
  83                 // "document" has got the lowest priority. So when the same file is both attached as document
  84                 // and embedded as picture then we only store the picture or replace the document
  85                 $found = DBA::selectFirst('post-media', ['type'], ['uri-id' => $media['uri-id'], 'url' => $media['url']]);
  86                 if (!$force && !empty($found) && (($found['type'] != self::DOCUMENT) || ($media['type'] == self::DOCUMENT))) {
  87                         Logger::info('Media already exists', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'callstack' => System::callstack()]);
  88                         return;
  89                 }
  90
  91                 $media = self::unsetEmptyFields($media);
  92                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
  93
  94                 // We are storing as fast as possible to avoid duplicated network requests
  95                 // when fetching additional information for pictures and other content.
  96                 $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
  97                 Logger::info('Stored media', ['result' => $result, 'media' => $media, 'callstack' => System::callstack()]);
  98                 $stored = $media;
  99
 100                 $media = self::fetchAdditionalData($media);
 101                 $media = self::unsetEmptyFields($media);
 102                 $media = DI::dbaDefinition()->truncateFieldsForTable('post-media', $media);
 103
 104                 if (array_diff_assoc($media, $stored)) {
 105                         $result = DBA::insert('post-media', $media, Database::INSERT_UPDATE);
 106                         Logger::info('Updated media', ['result' => $result, 'media' => $media]);
 107                 } else {
 108                         Logger::info('Nothing to update', ['media' => $media]);
 109                 }
 110         }
 111
 112         /**
 113          * Remove empty media fields
 114          *
 115          * @param array $media
 116          * @return array cleaned media array
 117          */
 118         private static function unsetEmptyFields(array $media): array
 119         {
 120                 $fields = ['mimetype', 'height', 'width', 'size', 'preview', 'preview-height', 'preview-width', 'description'];
 121                 foreach ($fields as $field) {
 122                         if (empty($media[$field])) {
 123                                 unset($media[$field]);
 124                         }
 125                 }
 126                 return $media;
 127         }
 128
 129         /**
 130          * Copy attachments from one uri-id to another
 131          *
 132          * @param integer $from_uri_id
 133          * @param integer $to_uri_id
 134          * @return void
 135          */
 136         public static function copy(int $from_uri_id, int $to_uri_id)
 137         {
 138                 $attachments = self::getByURIId($from_uri_id);
 139                 foreach ($attachments as $attachment) {
 140                         $attachment['uri-id'] = $to_uri_id;
 141                         self::insert($attachment);
 142                 }
 143         }
 144
 145         /**
 146          * Creates the "[attach]" element from the given attributes
 147          *
 148          * @param string $href
 149          * @param integer $length
 150          * @param string $type
 151          * @param string $title
 152          * @return string "[attach]" element
 153          */
 154         public static function getAttachElement(string $href, int $length, string $type, string $title = ''): string
 155         {
 156                 $media = self::fetchAdditionalData(['type' => self::DOCUMENT, 'url' => $href,
 157                         'size' => $length, 'mimetype' => $type, 'description' => $title]);
 158
 159                 return '[attach]href="' . $media['url'] . '" length="' . $media['size'] .
 160                         '" type="' . $media['mimetype'] . '" title="' . $media['description'] . '"[/attach]';
 161         }
 162
 163         /**
 164          * Fetch additional data for the provided media array
 165          *
 166          * @param array $media
 167          * @return array media array with additional data
 168          */
 169         public static function fetchAdditionalData(array $media): array
 170         {
 171                 if (Network::isLocalLink($media['url'])) {
 172                         $media = self::fetchLocalData($media);
 173                 }
 174
 175                 // Fetch the mimetype or size if missing.
 176                 if (empty($media['mimetype']) || empty($media['size'])) {
 177                         $timeout = DI::config()->get('system', 'xrd_timeout');
 178                         $curlResult = DI::httpClient()->head($media['url'], [HttpClientOptions::TIMEOUT => $timeout]);
 179
 180                         // Workaround for systems that can't handle a HEAD request
 181                         if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
 182                                 $curlResult = DI::httpClient()->get($media['url'], HttpClientAccept::DEFAULT, [HttpClientOptions::TIMEOUT => $timeout]);
 183                         }
 184
 185                         if ($curlResult->isSuccess()) {
 186                                 if (empty($media['mimetype'])) {
 187                                         $media['mimetype'] = $curlResult->getHeader('Content-Type')[0] ?? '';
 188                                 }
 189                                 if (empty($media['size'])) {
 190                                         $media['size'] = (int)($curlResult->getHeader('Content-Length')[0] ?? 0);
 191                                 }
 192                         } else {
 193                                 Logger::notice('Could not fetch head', ['media' => $media]);
 194                         }
 195                 }
 196
 197                 $filetype = !empty($media['mimetype']) ? strtolower(current(explode('/', $media['mimetype']))) : '';
 198
 199                 if (($media['type'] == self::IMAGE) || ($filetype == 'image')) {
 200                         $imagedata = Images::getInfoFromURLCached($media['url']);
 201                         if ($imagedata) {
 202                                 $media['mimetype'] = $imagedata['mime'];
 203                                 $media['size'] = $imagedata['size'];
 204                                 $media['width'] = $imagedata[0];
 205                                 $media['height'] = $imagedata[1];
 206                         } else {
 207                                 Logger::notice('No image data', ['media' => $media]);
 208                         }
 209                         if (!empty($media['preview'])) {
 210                                 $imagedata = Images::getInfoFromURLCached($media['preview']);
 211                                 if ($imagedata) {
 212                                         $media['preview-width'] = $imagedata[0];
 213                                         $media['preview-height'] = $imagedata[1];
 214                                 }
 215                         }
 216                 }
 217
 218                 if ($media['type'] != self::DOCUMENT) {
 219                         $media = self::addType($media);
 220                 }
 221
 222                 if (in_array($media['type'], [self::TEXT, self::APPLICATION, self::HTML, self::XML, self::PLAIN])) {
 223                         $media = self::addActivity($media);
 224                 }
 225
 226                 if (in_array($media['type'], [self::TEXT, self::APPLICATION, self::HTML, self::XML, self::PLAIN])) {
 227                         $media = self::addAccount($media);
 228                 }
 229
 230                 if ($media['type'] == self::HTML) {
 231                         $data = ParseUrl::getSiteinfoCached($media['url'], false);
 232                         $media['preview'] = $data['images'][0]['src'] ?? null;
 233                         $media['preview-height'] = $data['images'][0]['height'] ?? null;
 234                         $media['preview-width'] = $data['images'][0]['width'] ?? null;
 235                         $media['description'] = $data['text'] ?? null;
 236                         $media['name'] = $data['title'] ?? null;
 237                         $media['author-url'] = $data['author_url'] ?? null;
 238                         $media['author-name'] = $data['author_name'] ?? null;
 239                         $media['author-image'] = $data['author_img'] ?? null;
 240                         $media['publisher-url'] = $data['publisher_url'] ?? null;
 241                         $media['publisher-name'] = $data['publisher_name'] ?? null;
 242                         $media['publisher-image'] = $data['publisher_img'] ?? null;
 243                 }
 244                 return $media;
 245         }
 246
 247         /**
 248          * Adds the activity type if the media entry is linked to an activity
 249          *
 250          * @param array $media
 251          * @return array
 252          */
 253         private static function addActivity(array $media): array
 254         {
 255                 $id = Item::fetchByLink($media['url']);
 256                 if (empty($id)) {
 257                         return $media;
 258                 }
 259
 260                 $item = Post::selectFirst([], ['id' => $id, 'network' => Protocol::FEDERATED]);
 261                 if (empty($item['id'])) {
 262                         Logger::debug('Not a federated activity', ['id' => $id, 'uri-id' => $media['uri-id'], 'url' => $media['url']]);
 263                         return $media;
 264                 }
 265
 266                 if (!empty($item['plink']) && Strings::compareLink($item['plink'], $media['url']) &&
 267                         parse_url($item['plink'], PHP_URL_HOST) != parse_url($item['uri'], PHP_URL_HOST)) {
 268                         Logger::debug('Not a link to an activity', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 269                         return $media;
 270                 }
 271
 272                 if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
 273                         $media['mimetype'] = 'application/activity+json';
 274                 } elseif ($item['network'] == Protocol::DIASPORA) {
 275                         $media['mimetype'] = 'application/xml';
 276                 }
 277
 278                 $contact = Contact::getById($item['author-id'], ['avatar', 'gsid']);
 279                 if (!empty($contact['gsid'])) {
 280                         $gserver = DBA::selectFirst('gserver', ['url', 'site_name'], ['id' => $contact['gsid']]);
 281                 }
 282
 283                 $media['type'] = self::ACTIVITY;
 284                 $media['media-uri-id'] = $item['uri-id'];
 285                 $media['height'] = null;
 286                 $media['width'] = null;
 287                 $media['preview'] = null;
 288                 $media['preview-height'] = null;
 289                 $media['preview-width'] = null;
 290                 $media['description'] = $item['body'];
 291                 $media['name'] = $item['title'];
 292                 $media['author-url'] = $item['author-link'];
 293                 $media['author-name'] = $item['author-name'];
 294                 $media['author-image'] = $contact['avatar'] ?? $item['author-avatar'];
 295                 $media['publisher-url'] = $gserver['url'] ?? null;
 296                 $media['publisher-name'] = $gserver['site_name'] ?? null;
 297                 $media['publisher-image'] = null;
 298
 299                 Logger::debug('Activity detected', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'plink' => $item['plink'], 'uri' => $item['uri']]);
 300                 return $media;
 301         }
 302
 303         /**
 304          * Adds the account type if the media entry is linked to an account
 305          *
 306          * @param array $media
 307          * @return array
 308          */
 309         private static function addAccount(array $media): array
 310         {
 311                 $contact = Contact::getByURL($media['url'], false);
 312                 if (empty($contact) || ($contact['network'] == Protocol::PHANTOM)) {
 313                         return $media;
 314                 }
 315
 316                 if (in_array($contact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
 317                         $media['mimetype'] = 'application/activity+json';
 318                 }
 319
 320                 if (!empty($contact['gsid'])) {
 321                         $gserver = DBA::selectFirst('gserver', ['url', 'site_name'], ['id' => $contact['gsid']]);
 322                 }
 323
 324                 $media['type'] = self::ACCOUNT;
 325                 $media['media-uri-id'] = $contact['uri-id'];
 326                 $media['height'] = null;
 327                 $media['width'] = null;
 328                 $media['preview'] = null;
 329                 $media['preview-height'] = null;
 330                 $media['preview-width'] = null;
 331                 $media['description'] = $contact['about'];
 332                 $media['name'] = $contact['name'];
 333                 $media['author-url'] = $contact['url'];
 334                 $media['author-name'] = $contact['name'];
 335                 $media['author-image'] = $contact['avatar'];
 336                 $media['publisher-url'] = $gserver['url'] ?? null;
 337                 $media['publisher-name'] = $gserver['site_name'] ?? null;
 338                 $media['publisher-image'] = null;
 339
 340                 Logger::debug('Account detected', ['uri-id' => $media['uri-id'], 'url' => $media['url'], 'uri' => $contact['url']]);
 341                 return $media;
 342         }
 343
 344         /**
 345          * Fetch media data from local resources
 346          * @param array $media
 347          * @return array media with added data
 348          */
 349         private static function fetchLocalData(array $media): array
 350         {
 351                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'] ?? '', $matches)) {
 352                         return $media;
 353                 }
 354                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 355                 if (!empty($photo)) {
 356                         $media['mimetype'] = $photo['type'];
 357                         $media['size'] = $photo['datasize'];
 358                         $media['width'] = $photo['width'];
 359                         $media['height'] = $photo['height'];
 360                 }
 361
 362                 if (!preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['preview'] ?? '', $matches)) {
 363                         return $media;
 364                 }
 365                 $photo = Photo::selectFirst([], ['resource-id' => $matches[1], 'scale' => $matches[2]]);
 366                 if (!empty($photo)) {
 367                         $media['preview-width'] = $photo['width'];
 368                         $media['preview-height'] = $photo['height'];
 369                 }
 370
 371                 return $media;
 372         }
 373
 374         /**
 375          * Add the detected type to the media array
 376          *
 377          * @param array $data
 378          * @return array data array with the detected type
 379          */
 380         public static function addType(array $data): array
 381         {
 382                 if (empty($data['mimetype'])) {
 383                         Logger::info('No MimeType provided', ['media' => $data]);
 384                         return $data;
 385                 }
 386
 387                 $type = explode('/', current(explode(';', $data['mimetype'])));
 388                 if (count($type) < 2) {
 389                         Logger::info('Unknown MimeType', ['type' => $type, 'media' => $data]);
 390                         $data['type'] = self::UNKNOWN;
 391                         return $data;
 392                 }
 393
 394                 $filetype = strtolower($type[0]);
 395                 $subtype = strtolower($type[1]);
 396
 397                 if ($filetype == 'image') {
 398                         $data['type'] = self::IMAGE;
 399                 } elseif ($filetype == 'video') {
 400                         $data['type'] = self::VIDEO;
 401                 } elseif ($filetype == 'audio') {
 402                         $data['type'] = self::AUDIO;
 403                 } elseif (($filetype == 'text') && ($subtype == 'html')) {
 404                         $data['type'] = self::HTML;
 405                 } elseif (($filetype == 'text') && ($subtype == 'xml')) {
 406                         $data['type'] = self::XML;
 407                 } elseif (($filetype == 'text') && ($subtype == 'plain')) {
 408                         $data['type'] = self::PLAIN;
 409                 } elseif ($filetype == 'text') {
 410                         $data['type'] = self::TEXT;
 411                 } elseif (($filetype == 'application') && ($subtype == 'x-bittorrent')) {
 412                         $data['type'] = self::TORRENT;
 413                 } elseif ($filetype == 'application') {
 414                         $data['type'] = self::APPLICATION;
 415                 } else {
 416                         $data['type'] = self::UNKNOWN;
 417                         Logger::info('Unknown type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 418                         return $data;
 419                 }
 420
 421                 Logger::debug('Detected type', ['filetype' => $filetype, 'subtype' => $subtype, 'media' => $data]);
 422                 return $data;
 423         }
 424
 425         /**
 426          * Tests for path patterns that are usef for picture links in Friendica
 427          *
 428          * @param string $page    Link to the image page
 429          * @param string $preview Preview picture
 430          * @return boolean
 431          */
 432         private static function isPictureLink(string $page, string $preview): bool
 433         {
 434                 return preg_match('#/photos/.*/image/#ism', $page) && preg_match('#/photo/.*-1\.#ism', $preview);
 435         }
 436
 437         /**
 438          * Add media links and remove them from the body
 439          *
 440          * @param integer $uriid
 441          * @param string $body
 442          * @return string Body without media links
 443          */
 444         public static function insertFromBody(int $uriid, string $body): string
 445         {
 446                 // Simplify image codes
 447                 $unshared_body = $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
 448
 449                 $attachments = [];
 450                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 451                         foreach ($pictures as $picture) {
 452                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 453                                         continue;
 454                                 }
 455                                 $body = str_replace($picture[0], '', $body);
 456                                 $image = str_replace('-1.', '-0.', $picture[2]);
 457                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 458                                         'preview' => $picture[2], 'description' => $picture[3]];
 459                         }
 460                 }
 461
 462                 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
 463                         foreach ($pictures as $picture) {
 464                                 $body = str_replace($picture[0], '', $body);
 465                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1], 'description' => $picture[2]];
 466                         }
 467                 }
 468
 469                 if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $body, $pictures, PREG_SET_ORDER)) {
 470                         foreach ($pictures as $picture) {
 471                                 if (!self::isPictureLink($picture[1], $picture[2])) {
 472                                         continue;
 473                                 }
 474                                 $body = str_replace($picture[0], '', $body);
 475                                 $image = str_replace('-1.', '-0.', $picture[2]);
 476                                 $attachments[$image] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $image,
 477                                         'preview' => $picture[2], 'description' => null];
 478                         }
 479                 }
 480
 481                 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
 482                         foreach ($pictures as $picture) {
 483                                 $body = str_replace($picture[0], '', $body);
 484                                 $attachments[$picture[1]] = ['uri-id' => $uriid, 'type' => self::IMAGE, 'url' => $picture[1]];
 485                         }
 486                 }
 487
 488                 if (preg_match_all("/\[audio\]([^\[\]]*)\[\/audio\]/ism", $body, $audios, PREG_SET_ORDER)) {
 489                         foreach ($audios as $audio) {
 490                                 $body = str_replace($audio[0], '', $body);
 491                                 $attachments[$audio[1]] = ['uri-id' => $uriid, 'type' => self::AUDIO, 'url' => $audio[1]];
 492                         }
 493                 }
 494
 495                 if (preg_match_all("/\[video\]([^\[\]]*)\[\/video\]/ism", $body, $videos, PREG_SET_ORDER)) {
 496                         foreach ($videos as $video) {
 497                                 $body = str_replace($video[0], '', $body);
 498                                 $attachments[$video[1]] = ['uri-id' => $uriid, 'type' => self::VIDEO, 'url' => $video[1]];
 499                         }
 500                 }
 501
 502                 foreach ($attachments as $attachment) {
 503                         if (Post\Link::exists($uriid, $attachment['preview'] ?? $attachment['url'])) {
 504                                 continue;
 505                         }
 506
 507                         // Only store attachments that are part of the unshared body
 508                         if (Item::containsLink($unshared_body, $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
 509                                 self::insert($attachment);
 510                         }
 511                 }
 512
 513                 return trim($body);
 514         }
 515
 516         /**
 517          * Add media links from a relevant url in the body
 518          *
 519          * @param integer $uriid
 520          * @param string $body
 521          * @return void
 522          */
 523         public static function insertFromRelevantUrl(int $uriid, string $body)
 524         {
 525                 // Remove all hashtags and mentions
 526                 $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '', $body);
 527
 528                 // Search for pure links
 529                 if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches)) {
 530                         foreach ($matches[1] as $url) {
 531                                 Logger::info('Got page url (link without description)', ['uri-id' => $uriid, 'url' => $url]);
 532                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 533                         }
 534                 }
 535
 536                 // Search for links with descriptions
 537                 if (preg_match_all("/\[url\=(https?:.*?)\].*?\[\/url\]/ism", $body, $matches)) {
 538                         foreach ($matches[1] as $url) {
 539                                 Logger::info('Got page url (link with description)', ['uri-id' => $uriid, 'url' => $url]);
 540                                 self::insert(['uri-id' => $uriid, 'type' => self::UNKNOWN, 'url' => $url]);
 541                         }
 542                 }
 543         }
 544
 545         /**
 546          * Add media links from the attachment field
 547          *
 548          * @param integer $uriid
 549          * @param string $body
 550          * @return void
 551          */
 552         public static function insertFromAttachmentData(int $uriid, string $body)
 553         {
 554                 $data = BBCode::getAttachmentData($body);
 555                 if (empty($data))  {
 556                         return;
 557                 }
 558
 559                 Logger::info('Adding attachment data', ['data' => $data]);
 560                 $attachment = [
 561                         'uri-id' => $uriid,
 562                         'type' => self::HTML,
 563                         'url' => $data['url'],
 564                         'preview' => $data['preview'] ?? null,
 565                         'description' => $data['description'] ?? null,
 566                         'name' => $data['title'] ?? null,
 567                         'author-url' => $data['author_url'] ?? null,
 568                         'author-name' => $data['author_name'] ?? null,
 569                         'publisher-url' => $data['provider_url'] ?? null,
 570                         'publisher-name' => $data['provider_name'] ?? null,
 571                 ];
 572                 if (!empty($data['image'])) {
 573                         $attachment['preview'] = $data['image'];
 574                 }
 575                 self::insert($attachment);
 576         }
 577
 578         /**
 579          * Add media links from the attach field
 580          *
 581          * @param integer $uriid
 582          * @param string $attach
 583          * @return void
 584          */
 585         public static function insertFromAttachment(int $uriid, string $attach)
 586         {
 587                 if (!preg_match_all('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\"(?: title=\"(.*?)\")?|', $attach, $matches, PREG_SET_ORDER)) {
 588                         return;
 589                 }
 590
 591                 foreach ($matches as $attachment) {
 592                         $media['type'] = self::DOCUMENT;
 593                         $media['uri-id'] = $uriid;
 594                         $media['url'] = $attachment[1];
 595                         $media['size'] = $attachment[2];
 596                         $media['mimetype'] = $attachment[3];
 597                         $media['description'] = $attachment[4] ?? '';
 598
 599                         self::insert($media);
 600                 }
 601         }
 602
 603         /**
 604          * Retrieves the media attachments associated with the provided item ID.
 605          *
 606          * @param int $uri_id URI id
 607          * @param array $types Media types
 608          * @return array|bool Array on success, false on error
 609          * @throws \Exception
 610          */
 611         public static function getByURIId(int $uri_id, array $types = [])
 612         {
 613                 $condition = ['uri-id' => $uri_id];
 614
 615                 if (!empty($types)) {
 616                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 617                 }
 618
 619                 return DBA::selectToArray('post-media', [], $condition, ['order' => ['id']]);
 620         }
 621
 622         /**
 623          * Checks if media attachments are associated with the provided item ID.
 624          *
 625          * @param int $uri_id URI id
 626          * @param array $types Media types
 627          * @return bool Whether media attachment exists
 628          * @throws \Exception
 629          */
 630         public static function existsByURIId(int $uri_id, array $types = []): bool
 631         {
 632                 $condition = ['uri-id' => $uri_id];
 633
 634                 if (!empty($types)) {
 635                         $condition = DBA::mergeConditions($condition, ['type' => $types]);
 636                 }
 637
 638                 return DBA::exists('post-media', $condition);
 639         }
 640
 641         /**
 642          * Split the attachment media in the three segments "visual", "link" and "additional"
 643          *
 644          * @param int    $uri_id URI id
 645          * @param array  $links list of links that shouldn't be added
 646          * @param bool   $has_media
 647          * @return array attachments
 648          */
 649         public static function splitAttachments(int $uri_id, array $links = [], bool $has_media = true): array
 650         {
 651                 $attachments = ['visual' => [], 'link' => [], 'additional' => []];
 652
 653                 if (!$has_media) {
 654                         return $attachments;
 655                 }
 656
 657                 $media = self::getByURIId($uri_id);
 658                 if (empty($media)) {
 659                         return $attachments;
 660                 }
 661
 662                 $heights = [];
 663                 $selected = '';
 664                 $previews = [];
 665
 666                 foreach ($media as $medium) {
 667                         foreach ($links as $link) {
 668                                 if (Strings::compareLink($link, $medium['url'])) {
 669                                         continue 2;
 670                                 }
 671                         }
 672
 673                         // Avoid adding separate media entries for previews
 674                         foreach ($previews as $preview) {
 675                                 if (Strings::compareLink($preview, $medium['url'])) {
 676                                         continue 2;
 677                                 }
 678                         }
 679
 680                         // Currently these two types are ignored here.
 681                         // Posts are added differently and contacts are not displayed as attachments.
 682                         if (in_array($medium['type'], [self::ACCOUNT, self::ACTIVITY])) {
 683                                 continue;
 684                         }
 685
 686                         if (!empty($medium['preview'])) {
 687                                 $previews[] = $medium['preview'];
 688                         }
 689
 690                         $type = explode('/', current(explode(';', $medium['mimetype'])));
 691                         if (count($type) < 2) {
 692                                 Logger::info('Unknown MimeType', ['type' => $type, 'media' => $medium]);
 693                                 $filetype = 'unkn';
 694                                 $subtype = 'unkn';
 695                         } else {
 696                                 $filetype = strtolower($type[0]);
 697                                 $subtype = strtolower($type[1]);
 698                         }
 699
 700                         $medium['filetype'] = $filetype;
 701                         $medium['subtype'] = $subtype;
 702
 703                         if ($medium['type'] == self::HTML || (($filetype == 'text') && ($subtype == 'html'))) {
 704                                 $attachments['link'][] = $medium;
 705                                 continue;
 706                         }
 707
 708                         if (in_array($medium['type'], [self::AUDIO, self::IMAGE]) ||
 709                                 in_array($filetype, ['audio', 'image'])) {
 710                                 $attachments['visual'][] = $medium;
 711                         } elseif (($medium['type'] == self::VIDEO) || ($filetype == 'video')) {
 712                                 if (!empty($medium['height'])) {
 713                                         // Peertube videos are delivered in many different resolutions. We pick a moderate one.
 714                                         // Since only Peertube provides a "height" parameter, this wouldn't be executed
 715                                         // when someone for example on Mastodon was sharing multiple videos in a single post.
 716                                         $heights[$medium['height']] = $medium['url'];
 717                                         $video[$medium['url']] = $medium;
 718                                 } else {
 719                                         $attachments['visual'][] = $medium;
 720                                 }
 721                         } else {
 722                                 $attachments['additional'][] = $medium;
 723                         }
 724                 }
 725
 726                 if (!empty($heights)) {
 727                         ksort($heights);
 728                         foreach ($heights as $height => $url) {
 729                                 if (empty($selected) || $height <= 480) {
 730                                         $selected = $url;
 731                                 }
 732                         }
 733
 734                         if (!empty($selected)) {
 735                                 $attachments['visual'][] = $video[$selected];
 736                                 unset($video[$selected]);
 737                                 foreach ($video as $element) {
 738                                         $attachments['additional'][] = $element;
 739                                 }
 740                         }
 741                 }
 742
 743                 return $attachments;
 744         }
 745
 746         /**
 747          * Add media attachments to the body
 748          *
 749          * @param int    $uriid
 750          * @param string $body
 751          * @param array  $types
 752          *
 753          * @return string body
 754          */
 755         public static function addAttachmentsToBody(int $uriid, string $body = '', array $types = [self::IMAGE, self::AUDIO, self::VIDEO]): string
 756         {
 757                 if (empty($body)) {
 758                         $item = Post::selectFirst(['body'], ['uri-id' => $uriid]);
 759                         if (!DBA::isResult($item)) {
 760                                 return '';
 761                         }
 762                         $body = $item['body'];
 763                 }
 764                 $original_body = $body;
 765
 766                 $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
 767
 768                 foreach (self::getByURIId($uriid, $types) as $media) {
 769                         if (Item::containsLink($body, $media['preview'] ?? $media['url'], $media['type'])) {
 770                                 continue;
 771                         }
 772
 773                         if ($media['type'] == self::IMAGE) {
 774                                 if (!empty($media['preview'])) {
 775                                         if (!empty($media['description'])) {
 776                                                 $body .= "\n[url=" . $media['url'] . "][img=" . $media['preview'] . ']' . $media['description'] .'[/img][/url]';
 777                                         } else {
 778                                                 $body .= "\n[url=" . $media['url'] . "][img]" . $media['preview'] .'[/img][/url]';
 779                                         }
 780                                 } else {
 781                                         if (!empty($media['description'])) {
 782                                                 $body .= "\n[img=" . $media['url'] . ']' . $media['description'] .'[/img]';
 783                                         } else {
 784                                                 $body .= "\n[img]" . $media['url'] .'[/img]';
 785                                         }
 786                                 }
 787                         } elseif ($media['type'] == self::AUDIO) {
 788                                 $body .= "\n[audio]" . $media['url'] . "[/audio]\n";
 789                         } elseif ($media['type'] == self::VIDEO) {
 790                                 $body .= "\n[video]" . $media['url'] . "[/video]\n";
 791                         }
 792                 }
 793
 794                 if (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $original_body, $match)) {
 795                         $body .= "\n" . $match[1];
 796                 }
 797
 798                 return $body;
 799         }
 800
 801         /**
 802          * Get preview link for given media id
 803          *
 804          * @param integer $id   media id
 805          * @param string  $size One of the Proxy::SIZE_* constants
 806          * @return string preview link
 807          */
 808         public static function getPreviewUrlForId(int $id, string $size = ''): string
 809         {
 810                 $url = DI::baseUrl() . '/photo/preview/';
 811                 switch ($size) {
 812                         case Proxy::SIZE_MICRO:
 813                                 $url .= Proxy::PIXEL_MICRO . '/';
 814                                 break;
 815                         case Proxy::SIZE_THUMB:
 816                                 $url .= Proxy::PIXEL_THUMB . '/';
 817                                 break;
 818                         case Proxy::SIZE_SMALL:
 819                                 $url .= Proxy::PIXEL_SMALL . '/';
 820                                 break;
 821                         case Proxy::SIZE_MEDIUM:
 822                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 823                                 break;
 824                         case Proxy::SIZE_LARGE:
 825                                 $url .= Proxy::PIXEL_LARGE . '/';
 826                                 break;
 827                 }
 828                 return $url . $id;
 829         }
 830
 831         /**
 832          * Get media link for given media id
 833          *
 834          * @param integer $id   media id
 835          * @param string  $size One of the Proxy::SIZE_* constants
 836          * @return string media link
 837          */
 838         public static function getUrlForId(int $id, string $size = ''): string
 839         {
 840                 $url = DI::baseUrl() . '/photo/media/';
 841                 switch ($size) {
 842                         case Proxy::SIZE_MICRO:
 843                                 $url .= Proxy::PIXEL_MICRO . '/';
 844                                 break;
 845                         case Proxy::SIZE_THUMB:
 846                                 $url .= Proxy::PIXEL_THUMB . '/';
 847                                 break;
 848                         case Proxy::SIZE_SMALL:
 849                                 $url .= Proxy::PIXEL_SMALL . '/';
 850                                 break;
 851                         case Proxy::SIZE_MEDIUM:
 852                                 $url .= Proxy::PIXEL_MEDIUM . '/';
 853                                 break;
 854                         case Proxy::SIZE_LARGE:
 855                                 $url .= Proxy::PIXEL_LARGE . '/';
 856                                 break;
 857                 }
 858                 return $url . $id;
 859         }
 860 }