bluesky/bluesky.php

   1 <?php
   2 /**
   3  * Name: Bluesky Connector
   4  * Description: Post to Bluesky
   5  * Version: 1.1
   6  * Author: Michael Vogel <https://pirati.ca/profile/heluecht>
   7  *
   8  * @todo
   9  * Currently technical issues in the core:
  10  * - Outgoing mentions
  11  *
  12  * At some point in time:
  13  * - Sending Quote shares https://atproto.com/lexicons/app-bsky-embed#appbskyembedrecord and https://atproto.com/lexicons/app-bsky-embed#appbskyembedrecordwithmedia
  14  *
  15  * Possibly not possible:
  16  * - only fetch new posts
  17  *
  18  * Currently not possible, due to limitations in Friendica
  19  * - mute contacts https://atproto.com/lexicons/app-bsky-graph#appbskygraphmuteactor
  20  * - unmute contacts https://atproto.com/lexicons/app-bsky-graph#appbskygraphunmuteactor
  21  *
  22  * Possibly interesting:
  23  * - https://atproto.com/lexicons/com-atproto-label#comatprotolabelsubscribelabels
  24  */
  25
  26 use Friendica\Content\Text\BBCode;
  27 use Friendica\Content\Text\HTML;
  28 use Friendica\Content\Text\Plaintext;
  29 use Friendica\Core\Cache\Enum\Duration;
  30 use Friendica\Core\Config\Util\ConfigFileManager;
  31 use Friendica\Core\Hook;
  32 use Friendica\Core\Logger;
  33 use Friendica\Core\Protocol;
  34 use Friendica\Core\Renderer;
  35 use Friendica\Core\Worker;
  36 use Friendica\Database\DBA;
  37 use Friendica\DI;
  38 use Friendica\Model\Contact;
  39 use Friendica\Model\Item;
  40 use Friendica\Model\ItemURI;
  41 use Friendica\Model\Photo;
  42 use Friendica\Model\Post;
  43 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  44 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  45 use Friendica\Object\Image;
  46 use Friendica\Protocol\Activity;
  47 use Friendica\Protocol\Relay;
  48 use Friendica\Util\DateTimeFormat;
  49 use Friendica\Util\Strings;
  50
  51 const BLUESKY_DEFAULT_POLL_INTERVAL = 10; // given in minutes
  52 const BLUESKY_HOST = 'https://bsky.app'; // Hard wired until Bluesky will run on multiple systems
  53 const BLUESKY_IMAGE_SIZE = [1000000, 500000, 100000, 50000];
  54
  55 function bluesky_install()
  56 {
  57         Hook::register('load_config',             __FILE__, 'bluesky_load_config');
  58         Hook::register('hook_fork',               __FILE__, 'bluesky_hook_fork');
  59         Hook::register('post_local',              __FILE__, 'bluesky_post_local');
  60         Hook::register('notifier_normal',         __FILE__, 'bluesky_send');
  61         Hook::register('jot_networks',            __FILE__, 'bluesky_jot_nets');
  62         Hook::register('connector_settings',      __FILE__, 'bluesky_settings');
  63         Hook::register('connector_settings_post', __FILE__, 'bluesky_settings_post');
  64         Hook::register('cron',                    __FILE__, 'bluesky_cron');
  65         Hook::register('support_follow',          __FILE__, 'bluesky_support_follow');
  66         Hook::register('support_probe',           __FILE__, 'bluesky_support_probe');
  67         Hook::register('follow',                  __FILE__, 'bluesky_follow');
  68         Hook::register('unfollow',                __FILE__, 'bluesky_unfollow');
  69         Hook::register('block',                   __FILE__, 'bluesky_block');
  70         Hook::register('unblock',                 __FILE__, 'bluesky_unblock');
  71         Hook::register('check_item_notification', __FILE__, 'bluesky_check_item_notification');
  72         Hook::register('probe_detect',            __FILE__, 'bluesky_probe_detect');
  73         Hook::register('item_by_link',            __FILE__, 'bluesky_item_by_link');
  74 }
  75
  76 function bluesky_load_config(ConfigFileManager $loader)
  77 {
  78         DI::app()->getConfigCache()->load($loader->loadAddonConfig('bluesky'), \Friendica\Core\Config\ValueObject\Cache::SOURCE_STATIC);
  79 }
  80
  81 function bluesky_check_item_notification(array &$notification_data)
  82 {
  83         $did = DI::pConfig()->get($notification_data['uid'], 'bluesky', 'did');
  84
  85         if (!empty($did)) {
  86                 $notification_data['profiles'][] = $did;
  87         }
  88 }
  89
  90 function bluesky_probe_detect(array &$hookData)
  91 {
  92         // Don't overwrite an existing result
  93         if (isset($hookData['result'])) {
  94                 return;
  95         }
  96
  97         // Avoid a lookup for the wrong network
  98         if (!in_array($hookData['network'], ['', Protocol::BLUESKY])) {
  99                 return;
 100         }
 101
 102         $pconfig = DBA::selectFirst('pconfig', ['uid'], ["`cat` = ? AND `k` = ? AND `v` != ?", 'bluesky', 'access_token', '']);
 103         if (empty($pconfig['uid'])) {
 104                 return;
 105         }
 106
 107         if (parse_url($hookData['uri'], PHP_URL_SCHEME) == 'did') {
 108                 $did = $hookData['uri'];
 109         } elseif (preg_match('#^' . BLUESKY_HOST . '/profile/(.+)#', $hookData['uri'], $matches)) {
 110                 $did = bluesky_get_did($pconfig['uid'], $matches[1]);
 111                 if (empty($did)) {
 112                         return;
 113                 }
 114         } else {
 115                 return;
 116         }
 117
 118         $token = bluesky_get_token($pconfig['uid']);
 119         if (empty($token)) {
 120                 return;
 121         }
 122
 123         $data = bluesky_xrpc_get($pconfig['uid'], 'app.bsky.actor.getProfile', ['actor' => $did]);
 124         if (empty($data)) {
 125                 return;
 126         }
 127
 128         $hookData['result'] = bluesky_get_contact_fields($data, 0, false);
 129
 130         // Preparing probe data. This differs slightly from the contact array
 131         $hookData['result']['about']    = HTML::toBBCode($data->description ?? '');
 132         $hookData['result']['photo']    = $data->avatar ?? '';
 133         $hookData['result']['header']   = $data->banner ?? '';
 134         $hookData['result']['batch']    = '';
 135         $hookData['result']['notify']   = '';
 136         $hookData['result']['poll']     = '';
 137         $hookData['result']['poco']     = '';
 138         $hookData['result']['pubkey']   = '';
 139         $hookData['result']['priority'] = 0;
 140         $hookData['result']['guid']     = '';
 141 }
 142
 143 function bluesky_item_by_link(array &$hookData)
 144 {
 145         // Don't overwrite an existing result
 146         if (isset($hookData['item_id'])) {
 147                 return;
 148         }
 149
 150         $token = bluesky_get_token($hookData['uid']);
 151         if (empty($token)) {
 152                 return;
 153         }
 154
 155         if (!preg_match('#^' . BLUESKY_HOST . '/profile/(.+)/post/(.+)#', $hookData['uri'], $matches)) {
 156                 return;
 157         }
 158
 159         $did = bluesky_get_did($hookData['uid'], $matches[1]);
 160         if (empty($did)) {
 161                 return;
 162         }
 163
 164         Logger::debug('Found bluesky post', ['url' => $hookData['uri'], 'handle' => $matches[1], 'did' => $did, 'cid' => $matches[2]]);
 165
 166         $uri = 'at://' . $did . '/app.bsky.feed.post/' . $matches[2];
 167
 168         $uri = bluesky_fetch_missing_post($uri, $hookData['uid'], 0, 0);
 169         Logger::debug('Got post', ['profile' => $matches[1], 'cid' => $matches[2], 'result' => $uri]);
 170         if (!empty($uri)) {
 171                 $item = Post::selectFirst(['id'], ['uri' => $uri, 'uid' => $hookData['uid']]);
 172                 if (!empty($item['id'])) {
 173                         $hookData['item_id'] = $item['id'];
 174                 }
 175         }
 176 }
 177
 178 function bluesky_support_follow(array &$data)
 179 {
 180         if ($data['protocol'] == Protocol::BLUESKY) {
 181                 $data['result'] = true;
 182         }
 183 }
 184
 185 function bluesky_support_probe(array &$data)
 186 {
 187         if ($data['protocol'] == Protocol::BLUESKY) {
 188                 $data['result'] = true;
 189         }
 190 }
 191
 192 function bluesky_follow(array &$hook_data)
 193 {
 194         $token = bluesky_get_token($hook_data['uid']);
 195         if (empty($token)) {
 196                 return;
 197         }
 198
 199         Logger::debug('Check if contact is bluesky', ['data' => $hook_data]);
 200         $contact = DBA::selectFirst('contact', [], ['network' => Protocol::BLUESKY, 'url' => $hook_data['url'], 'uid' => [0, $hook_data['uid']]]);
 201         if (empty($contact)) {
 202                 return;
 203         }
 204
 205         $record = [
 206                 'subject'   => $contact['url'],
 207                 'createdAt' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
 208                 '$type'     => 'app.bsky.graph.follow'
 209         ];
 210
 211         $post = [
 212                 'collection' => 'app.bsky.graph.follow',
 213                 'repo'       => DI::pConfig()->get($hook_data['uid'], 'bluesky', 'did'),
 214                 'record'     => $record
 215         ];
 216
 217         $activity = bluesky_xrpc_post($hook_data['uid'], 'com.atproto.repo.createRecord', $post);
 218         if (!empty($activity->uri)) {
 219                 $hook_data['contact'] = $contact;
 220                 Logger::debug('Successfully start following', ['url' => $contact['url'], 'uri' => $activity->uri]);
 221         }
 222 }
 223
 224 function bluesky_unfollow(array &$hook_data)
 225 {
 226         $token = bluesky_get_token($hook_data['uid']);
 227         if (empty($token)) {
 228                 return;
 229         }
 230
 231         if ($hook_data['contact']['network'] != Protocol::BLUESKY) {
 232                 return;
 233         }
 234
 235         $data = bluesky_xrpc_get($hook_data['uid'], 'app.bsky.actor.getProfile', ['actor' => $hook_data['contact']['url']]);
 236         if (empty($data->viewer) || empty($data->viewer->following)) {
 237                 return;
 238         }
 239
 240         bluesky_delete_post($data->viewer->following, $hook_data['uid']);
 241
 242         $hook_data['result'] = true;
 243 }
 244
 245 function bluesky_block(array &$hook_data)
 246 {
 247         $token = bluesky_get_token($hook_data['uid']);
 248         if (empty($token)) {
 249                 return;
 250         }
 251
 252         Logger::debug('Check if contact is bluesky', ['data' => $hook_data]);
 253         $contact = DBA::selectFirst('contact', [], ['network' => Protocol::BLUESKY, 'url' => $hook_data['url'], 'uid' => [0, $hook_data['uid']]]);
 254         if (empty($contact)) {
 255                 return;
 256         }
 257
 258         $record = [
 259                 'subject'   => $contact['url'],
 260                 'createdAt' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
 261                 '$type'     => 'app.bsky.graph.block'
 262         ];
 263
 264         $post = [
 265                 'collection' => 'app.bsky.graph.block',
 266                 'repo'       => DI::pConfig()->get($hook_data['uid'], 'bluesky', 'did'),
 267                 'record'     => $record
 268         ];
 269
 270         $activity = bluesky_xrpc_post($hook_data['uid'], 'com.atproto.repo.createRecord', $post);
 271         if (!empty($activity->uri)) {
 272                 $cdata = Contact::getPublicAndUserContactID($hook_data['contact']['id'], $hook_data['uid']);
 273                 if (!empty($cdata['user'])) {
 274                         Contact::remove($cdata['user']);
 275                 }
 276                 Logger::debug('Successfully blocked contact', ['url' => $hook_data['contact']['url'], 'uri' => $activity->uri]);
 277         }
 278 }
 279
 280 function bluesky_unblock(array &$hook_data)
 281 {
 282         $token = bluesky_get_token($hook_data['uid']);
 283         if (empty($token)) {
 284                 return;
 285         }
 286
 287         if ($hook_data['contact']['network'] != Protocol::BLUESKY) {
 288                 return;
 289         }
 290
 291         $data = bluesky_xrpc_get($hook_data['uid'], 'app.bsky.actor.getProfile', ['actor' => $hook_data['contact']['url']]);
 292         if (empty($data->viewer) || empty($data->viewer->blocking)) {
 293                 return;
 294         }
 295
 296         bluesky_delete_post($data->viewer->blocking, $hook_data['uid']);
 297
 298         $hook_data['result'] = true;
 299 }
 300
 301 function bluesky_settings(array &$data)
 302 {
 303         if (!DI::userSession()->getLocalUserId()) {
 304                 return;
 305         }
 306
 307         $enabled      = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post') ?? false;
 308         $def_enabled  = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post_by_default') ?? false;
 309         $host         = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'host') ?: 'https://bsky.social';
 310         $handle       = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'handle');
 311         $did          = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'did');
 312         $token        = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'access_token');
 313         $import       = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'import') ?? false;
 314         $import_feeds = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'import_feeds') ?? false;
 315
 316         $status = $token ? DI::l10n()->t("You are authenticated to Bluesky. For security reasons the password isn't stored.") : DI::l10n()->t('You are not authenticated. Please enter the app password.');
 317
 318         $t    = Renderer::getMarkupTemplate('connector_settings.tpl', 'addon/bluesky/');
 319         $html = Renderer::replaceMacros($t, [
 320                 '$enable'       => ['bluesky', DI::l10n()->t('Enable Bluesky Post Addon'), $enabled],
 321                 '$bydefault'    => ['bluesky_bydefault', DI::l10n()->t('Post to Bluesky by default'), $def_enabled],
 322                 '$import'       => ['bluesky_import', DI::l10n()->t('Import the remote timeline'), $import],
 323                 '$import_feeds' => ['bluesky_import_feeds', DI::l10n()->t('Import the pinned feeds'), $import_feeds, DI::l10n()->t('When activated, Posts will be imported from all the feeds that you pinned in Bluesky.')],
 324                 '$host'         => ['bluesky_host', DI::l10n()->t('Bluesky host'), $host, '', '', 'readonly'],
 325                 '$handle'       => ['bluesky_handle', DI::l10n()->t('Bluesky handle'), $handle],
 326                 '$did'          => ['bluesky_did', DI::l10n()->t('Bluesky DID'), $did, DI::l10n()->t('This is the unique identifier. It will be fetched automatically, when the handle is entered.'), '', 'readonly'],
 327                 '$password'     => ['bluesky_password', DI::l10n()->t('Bluesky app password'), '', DI::l10n()->t("Please don't add your real password here, but instead create a specific app password in the Bluesky settings.")],
 328                 '$status'       => $status
 329         ]);
 330
 331         $data = [
 332                 'connector' => 'bluesky',
 333                 'title'     => DI::l10n()->t('Bluesky Import/Export'),
 334                 'image'     => 'images/bluesky.jpg',
 335                 'enabled'   => $enabled,
 336                 'html'      => $html,
 337         ];
 338 }
 339
 340 function bluesky_settings_post(array &$b)
 341 {
 342         if (empty($_POST['bluesky-submit'])) {
 343                 return;
 344         }
 345
 346         $old_host   = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'host');
 347         $old_handle = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'handle');
 348         $old_did    = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'did');
 349
 350         $host   = $_POST['bluesky_host'];
 351         $handle = $_POST['bluesky_handle'];
 352
 353         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'post',            intval($_POST['bluesky']));
 354         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'post_by_default', intval($_POST['bluesky_bydefault']));
 355         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'host',            $host);
 356         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'handle',          $handle);
 357         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'import',          intval($_POST['bluesky_import']));
 358         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'import_feeds',    intval($_POST['bluesky_import_feeds']));
 359
 360         if (!empty($host) && !empty($handle)) {
 361                 if (empty($old_did) || $old_host != $host || $old_handle != $handle) {
 362                         DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'bluesky', 'did', bluesky_get_did(DI::userSession()->getLocalUserId(), DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'handle')));
 363                 }
 364         } else {
 365                 DI::pConfig()->delete(DI::userSession()->getLocalUserId(), 'bluesky', 'did');
 366         }
 367
 368         if (!empty($_POST['bluesky_password'])) {
 369                 bluesky_create_token(DI::userSession()->getLocalUserId(), $_POST['bluesky_password']);
 370         }
 371 }
 372
 373 function bluesky_jot_nets(array &$jotnets_fields)
 374 {
 375         if (!DI::userSession()->getLocalUserId()) {
 376                 return;
 377         }
 378
 379         if (DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post')) {
 380                 $jotnets_fields[] = [
 381                         'type'  => 'checkbox',
 382                         'field' => [
 383                                 'bluesky_enable',
 384                                 DI::l10n()->t('Post to Bluesky'),
 385                                 DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post_by_default')
 386                         ]
 387                 ];
 388         }
 389 }
 390
 391 function bluesky_cron()
 392 {
 393         $last = DI::keyValue()->get('bluesky_last_poll');
 394
 395         $poll_interval = intval(DI::config()->get('bluesky', 'poll_interval'));
 396         if (!$poll_interval) {
 397                 $poll_interval = BLUESKY_DEFAULT_POLL_INTERVAL;
 398         }
 399
 400         if ($last) {
 401                 $next = $last + ($poll_interval * 60);
 402                 if ($next > time()) {
 403                         Logger::notice('poll interval not reached');
 404                         return;
 405                 }
 406         }
 407         Logger::notice('cron_start');
 408
 409         $abandon_days = intval(DI::config()->get('system', 'account_abandon_days'));
 410         if ($abandon_days < 1) {
 411                 $abandon_days = 0;
 412         }
 413
 414         $abandon_limit = date(DateTimeFormat::MYSQL, time() - $abandon_days * 86400);
 415
 416         $pconfigs = DBA::selectToArray('pconfig', [], ['cat' => 'bluesky', 'k' => 'import', 'v' => true]);
 417         foreach ($pconfigs as $pconfig) {
 418                 if ($abandon_days != 0) {
 419                         if (!DBA::exists('user', ["`uid` = ? AND `login_date` >= ?", $pconfig['uid'], $abandon_limit])) {
 420                                 Logger::notice('abandoned account: timeline from user will not be imported', ['user' => $pconfig['uid']]);
 421                                 continue;
 422                         }
 423                 }
 424
 425                 // Refresh the token now, so that it doesn't need to be refreshed in parallel by the following workers
 426                 bluesky_get_token($pconfig['uid']);
 427
 428                 Worker::add(['priority' => Worker::PRIORITY_MEDIUM, 'force_priority' => true], 'addon/bluesky/bluesky_timeline.php', $pconfig['uid']);
 429                 Worker::add(['priority' => Worker::PRIORITY_MEDIUM, 'force_priority' => true], 'addon/bluesky/bluesky_notifications.php', $pconfig['uid']);
 430
 431                 if (DI::pConfig()->get($pconfig['uid'], 'bluesky', 'import_feeds')) {
 432                         $feeds = bluesky_get_feeds($pconfig['uid']);
 433                         foreach ($feeds as $feed) {
 434                                 Worker::add(['priority' => Worker::PRIORITY_MEDIUM, 'force_priority' => true], 'addon/bluesky/bluesky_feed.php', $pconfig['uid'], $feed);
 435                         }
 436                 }
 437         }
 438
 439         $last_clean = DI::keyValue()->get('bluesky_last_clean');
 440         if (empty($last_clean) || ($last_clean + 86400 < time())) {
 441                 Logger::notice('Start contact cleanup');
 442                 $contacts = DBA::select('account-user-view', ['id', 'pid'], ["`network` = ? AND `uid` != ? AND `rel` = ?", Protocol::BLUESKY, 0, Contact::NOTHING]);
 443                 while ($contact = DBA::fetch($contacts)) {
 444                         Worker::add(Worker::PRIORITY_LOW, 'MergeContact', $contact['pid'], $contact['id'], 0);
 445                 }
 446                 DBA::close($contacts);
 447                 DI::keyValue()->set('bluesky_last_clean', time());
 448                 Logger::notice('Contact cleanup done');
 449         }
 450
 451         Logger::notice('cron_end');
 452
 453         DI::keyValue()->set('bluesky_last_poll', time());
 454 }
 455
 456 function bluesky_hook_fork(array &$b)
 457 {
 458         if ($b['name'] != 'notifier_normal') {
 459                 return;
 460         }
 461
 462         $post = $b['data'];
 463
 464         if (($post['created'] !== $post['edited']) && !$post['deleted']) {
 465                 DI::logger()->info('Editing is not supported by the addon');
 466                 $b['execute'] = false;
 467                 return;
 468         }
 469
 470         if (DI::pConfig()->get($post['uid'], 'bluesky', 'import')) {
 471                 // Don't post if it isn't a reply to a bluesky post
 472                 if (($post['parent'] != $post['id']) && !Post::exists(['id' => $post['parent'], 'network' => Protocol::BLUESKY])) {
 473                         Logger::notice('No bluesky parent found', ['item' => $post['id']]);
 474                         $b['execute'] = false;
 475                         return;
 476                 }
 477         } elseif (!strstr($post['postopts'] ?? '', 'bluesky') || ($post['parent'] != $post['id']) || $post['private']) {
 478                 DI::logger()->info('Activities are never exported when we don\'t import the bluesky timeline', ['uid' => $post['uid']]);
 479                 $b['execute'] = false;
 480                 return;
 481         }
 482 }
 483
 484 function bluesky_post_local(array &$b)
 485 {
 486         if ($b['edit']) {
 487                 return;
 488         }
 489
 490         if (!DI::userSession()->getLocalUserId() || (DI::userSession()->getLocalUserId() != $b['uid'])) {
 491                 return;
 492         }
 493
 494         if ($b['private'] || $b['parent']) {
 495                 return;
 496         }
 497
 498         $bluesky_post   = intval(DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post'));
 499         $bluesky_enable = (($bluesky_post && !empty($_REQUEST['bluesky_enable'])) ? intval($_REQUEST['bluesky_enable']) : 0);
 500
 501         // if API is used, default to the chosen settings
 502         if ($b['api_source'] && intval(DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'bluesky', 'post_by_default'))) {
 503                 $bluesky_enable = 1;
 504         }
 505
 506         if (!$bluesky_enable) {
 507                 return;
 508         }
 509
 510         if (strlen($b['postopts'])) {
 511                 $b['postopts'] .= ',';
 512         }
 513
 514         $b['postopts'] .= 'bluesky';
 515 }
 516
 517 function bluesky_send(array &$b)
 518 {
 519         if (($b['created'] !== $b['edited']) && !$b['deleted']) {
 520                 return;
 521         }
 522
 523         if ($b['gravity'] != Item::GRAVITY_PARENT) {
 524                 Logger::debug('Got comment', ['item' => $b]);
 525
 526                 if ($b['deleted']) {
 527                         $uri = bluesky_get_uri_class($b['uri']);
 528                         if (empty($uri)) {
 529                                 Logger::debug('Not a bluesky post', ['uri' => $b['uri']]);
 530                                 return;
 531                         }
 532                         bluesky_delete_post($b['uri'], $b['uid']);
 533                         return;
 534                 }
 535
 536                 $root   = bluesky_get_uri_class($b['parent-uri']);
 537                 $parent = bluesky_get_uri_class($b['thr-parent']);
 538
 539                 if (empty($root) || empty($parent)) {
 540                         Logger::debug('No bluesky post', ['parent' => $b['parent'], 'thr-parent' => $b['thr-parent']]);
 541                         return;
 542                 }
 543
 544                 if ($b['gravity'] == Item::GRAVITY_COMMENT) {
 545                         Logger::debug('Posting comment', ['root' => $root, 'parent' => $parent]);
 546                         bluesky_create_post($b, $root, $parent);
 547                         return;
 548                 } elseif (in_array($b['verb'], [Activity::LIKE, Activity::ANNOUNCE])) {
 549                         bluesky_create_activity($b, $parent);
 550                 }
 551                 return;
 552         } elseif ($b['private'] || !strstr($b['postopts'], 'bluesky')) {
 553                 return;
 554         }
 555
 556         bluesky_create_post($b);
 557 }
 558
 559 function bluesky_create_activity(array $item, stdClass $parent = null)
 560 {
 561         $uid = $item['uid'];
 562         $token = bluesky_get_token($uid);
 563         if (empty($token)) {
 564                 return;
 565         }
 566
 567         $did  = DI::pConfig()->get($uid, 'bluesky', 'did');
 568
 569         if ($item['verb'] == Activity::LIKE) {
 570                 $record = [
 571                         'subject'   => $parent,
 572                         'createdAt' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
 573                         '$type'     => 'app.bsky.feed.like'
 574                 ];
 575
 576                 $post = [
 577                         'collection' => 'app.bsky.feed.like',
 578                         'repo'       => $did,
 579                         'record'     => $record
 580                 ];
 581         } elseif ($item['verb'] == Activity::ANNOUNCE) {
 582                 $record = [
 583                         'subject'   => $parent,
 584                         'createdAt' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
 585                         '$type'     => 'app.bsky.feed.repost'
 586                 ];
 587
 588                 $post = [
 589                         'collection' => 'app.bsky.feed.repost',
 590                         'repo'       => $did,
 591                         'record'     => $record
 592                 ];
 593         }
 594
 595         $activity = bluesky_xrpc_post($uid, 'com.atproto.repo.createRecord', $post);
 596         if (empty($activity)) {
 597                 return;
 598         }
 599         Logger::debug('Activity done', ['return' => $activity]);
 600         $uri = bluesky_get_uri($activity);
 601         Item::update(['extid' => $uri], ['id' => $item['id']]);
 602         Logger::debug('Set extid', ['id' => $item['id'], 'extid' => $activity]);
 603 }
 604
 605 function bluesky_create_post(array $item, stdClass $root = null, stdClass $parent = null)
 606 {
 607         $uid = $item['uid'];
 608         $token = bluesky_get_token($uid);
 609         if (empty($token)) {
 610                 return;
 611         }
 612
 613         $did  = DI::pConfig()->get($uid, 'bluesky', 'did');
 614         $urls = bluesky_get_urls(Post\Media::removeFromBody($item['body']));
 615         $item['body'] = $urls['body'];
 616
 617         $msg = Plaintext::getPost($item, 300, false, BBCode::BLUESKY);
 618         foreach ($msg['parts'] as $key => $part) {
 619
 620                 $facets = bluesky_get_facets($part, $urls['urls']);
 621
 622                 $record = [
 623                         'text'      => $facets['body'],
 624                         'createdAt' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
 625                         '$type'     => 'app.bsky.feed.post'
 626                 ];
 627
 628                 if (!empty($facets['facets'])) {
 629                         $record['facets'] = $facets['facets'];
 630                 }
 631
 632                 if (!empty($root)) {
 633                         $record['reply'] = ['root' => $root, 'parent' => $parent];
 634                 }
 635
 636                 if ($key == count($msg['parts']) - 1) {
 637                         $record = bluesky_add_embed($uid, $msg, $record);
 638                         if (empty($record)) {
 639                                 if (Worker::getRetrial() < 3) {
 640                                         Worker::defer();
 641                                 }
 642                                 return;
 643                         }
 644                 }
 645
 646                 $post = [
 647                         'collection' => 'app.bsky.feed.post',
 648                         'repo'       => $did,
 649                         'record'     => $record
 650                 ];
 651
 652                 $parent = bluesky_xrpc_post($uid, 'com.atproto.repo.createRecord', $post);
 653                 if (empty($parent)) {
 654                         if ($part == 0) {
 655                                 Worker::defer();
 656                         }
 657                         return;
 658                 }
 659                 Logger::debug('Posting done', ['return' => $parent]);
 660                 if (empty($root)) {
 661                         $root = $parent;
 662                 }
 663                 if (($key == 0) && ($item['gravity'] != Item::GRAVITY_PARENT)) {
 664                         $uri = bluesky_get_uri($parent);
 665                         Item::update(['extid' => $uri], ['id' => $item['id']]);
 666                         Logger::debug('Set extid', ['id' => $item['id'], 'extid' => $uri]);
 667                 }
 668         }
 669 }
 670
 671 function bluesky_get_urls(string $body): array
 672 {
 673         // Remove all hashtag and mention links
 674         $body = preg_replace("/([#@!])\[url\=(.*?)\](.*?)\[\/url\]/ism", '$1$3', $body);
 675
 676         $body = BBCode::expandVideoLinks($body);
 677         $urls = [];
 678
 679         // Search for pure links
 680         if (preg_match_all("/\[url\](https?:.*?)\[\/url\]/ism", $body, $matches, PREG_SET_ORDER)) {
 681                 foreach ($matches as $match) {
 682                         $text = Strings::getStyledURL($match[1]);
 683                         $hash = bluesky_get_hash_for_url($match[0], mb_strlen($text));
 684                         $urls[] = ['url' => $match[1], 'text' => $text, 'hash' => $hash];
 685                         $body = str_replace($match[0], $hash, $body);
 686                 }
 687         }
 688
 689         // Search for links with descriptions
 690         if (preg_match_all("/\[url\=(https?:.*?)\](.*?)\[\/url\]/ism", $body, $matches, PREG_SET_ORDER)) {
 691                 foreach ($matches as $match) {
 692                         if ($match[1] == $match[2]) {
 693                                 $text = Strings::getStyledURL($match[1]);
 694                         } else {
 695                                 $text = $match[2];
 696                         }
 697                         if (mb_strlen($text) < 100) {
 698                                 $hash = bluesky_get_hash_for_url($match[0], mb_strlen($text));
 699                                 $urls[] = ['url' => $match[1], 'text' => $text, 'hash' => $hash];
 700                                 $body = str_replace($match[0], $hash, $body);
 701                         } else {
 702                                 $text = Strings::getStyledURL($match[1]);
 703                                 $hash = bluesky_get_hash_for_url($match[0], mb_strlen($text));
 704                                 $urls[] = ['url' => $match[1], 'text' => $text, 'hash' => $hash];
 705                                 $body = str_replace($match[0], $text . ' ' . $hash, $body);
 706                         }
 707                 }
 708         }
 709
 710         return ['body' => $body, 'urls' => $urls];
 711 }
 712
 713 function bluesky_get_hash_for_url(string $text, int $linklength): string
 714 {
 715         if ($linklength <= 10) {
 716                 return '|' . hash('crc32', $text) . '|';
 717         }
 718         return substr('|' . hash('crc32', $text) . base64_encode($text), 0, $linklength - 2) . '|';
 719 }
 720
 721 function bluesky_get_facets(string $body, array $urls): array
 722 {
 723         $facets = [];
 724
 725         foreach ($urls as $url) {
 726                 $pos = strpos($body, $url['hash']);
 727                 if ($pos === false) {
 728                         continue;
 729                 }
 730                 if ($pos > 0) {
 731                         $prefix = substr($body, 0, $pos);
 732                 } else {
 733                         $prefix = '';
 734                 }
 735
 736                 $body = $prefix . $url['text'] . substr($body, $pos + strlen($url['hash']));
 737
 738                 $facet = new stdClass;
 739                 $facet->index = new stdClass;
 740                 $facet->index->byteEnd   = $pos + strlen($url['text']);
 741                 $facet->index->byteStart = $pos;
 742
 743                 $feature = new stdClass;
 744                 $feature->uri = $url['url'];
 745                 $type = '$type';
 746                 $feature->$type = 'app.bsky.richtext.facet#link';
 747
 748                 $facet->features = [$feature];
 749                 $facets[] = $facet;
 750         }
 751
 752         return ['facets' => $facets, 'body' => $body];
 753 }
 754
 755 function bluesky_add_embed(int $uid, array $msg, array $record): array
 756 {
 757         if (($msg['type'] != 'link') && !empty($msg['images'])) {
 758                 $images = [];
 759                 foreach ($msg['images'] as $image) {
 760                         if (count($images) == 4) {
 761                                 continue;
 762                         }
 763                         $photo = Photo::selectFirst([], ['id' => $image['id']]);
 764                         $blob = bluesky_upload_blob($uid, $photo);
 765                         if (empty($blob)) {
 766                                 return [];
 767                         }
 768                         $images[] = ['alt' => $image['description'] ?? '', 'image' => $blob];
 769                 }
 770                 if (!empty($images)) {
 771                         $record['embed'] = ['$type' => 'app.bsky.embed.images', 'images' => $images];
 772                 }
 773         } elseif ($msg['type'] == 'link') {
 774                 $record['embed'] = [
 775                         '$type'    => 'app.bsky.embed.external',
 776                         'external' => [
 777                                 'uri'         => $msg['url'],
 778                                 'title'       => $msg['title'] ?? '',
 779                                 'description' => $msg['description'] ?? '',
 780                         ]
 781                 ];
 782                 if (!empty($msg['image'])) {
 783                         $photo = Photo::createPhotoForExternalResource($msg['image']);
 784                         $blob = bluesky_upload_blob($uid, $photo);
 785                         if (!empty($blob)) {
 786                                 $record['embed']['external']['thumb'] = $blob;
 787                         }
 788                 }
 789         }
 790         return $record;
 791 }
 792
 793 function bluesky_upload_blob(int $uid, array $photo): ?stdClass
 794 {
 795         $retrial = Worker::getRetrial();
 796         $content = Photo::getImageForPhoto($photo);
 797
 798         $picture = new Image($content, $photo['type']);
 799         $height  = $picture->getHeight();
 800         $width   = $picture->getWidth();
 801         $size    = strlen($content);
 802
 803         $picture    = Photo::resizeToFileSize($picture, BLUESKY_IMAGE_SIZE[$retrial]);
 804         $new_height = $picture->getHeight();
 805         $new_width  = $picture->getWidth();
 806         $content    = $picture->asString();
 807         $new_size   = strlen($content);
 808
 809         Logger::info('Uploading', ['uid' => $uid, 'retrial' => $retrial, 'height' => $new_height, 'width' => $new_width, 'size' => $new_size, 'orig-height' => $height, 'orig-width' => $width, 'orig-size' => $size]);
 810
 811         $data = bluesky_post($uid, '/xrpc/com.atproto.repo.uploadBlob', $content, ['Content-type' => $photo['type'], 'Authorization' => ['Bearer ' . bluesky_get_token($uid)]]);
 812         if (empty($data)) {
 813                 Logger::info('Uploading failed', ['uid' => $uid, 'retrial' => $retrial, 'height' => $new_height, 'width' => $new_width, 'size' => $new_size, 'orig-height' => $height, 'orig-width' => $width, 'orig-size' => $size]);
 814                 return null;
 815         }
 816
 817         Logger::debug('Uploaded blob', ['return' => $data, 'uid' => $uid, 'retrial' => $retrial, 'height' => $new_height, 'width' => $new_width, 'size' => $new_size, 'orig-height' => $height, 'orig-width' => $width, 'orig-size' => $size]);
 818         return $data->blob;
 819 }
 820
 821 function bluesky_delete_post(string $uri, int $uid)
 822 {
 823         $parts = bluesky_get_uri_parts($uri);
 824         if (empty($parts)) {
 825                 Logger::debug('No uri delected', ['uri' => $uri]);
 826                 return;
 827         }
 828         bluesky_xrpc_post($uid, 'com.atproto.repo.deleteRecord', $parts);
 829         Logger::debug('Deleted', ['parts' => $parts]);
 830 }
 831
 832 function bluesky_fetch_timeline(int $uid)
 833 {
 834         $data = bluesky_xrpc_get($uid, 'app.bsky.feed.getTimeline');
 835         if (empty($data)) {
 836                 return;
 837         }
 838
 839         if (empty($data->feed)) {
 840                 return;
 841         }
 842
 843         foreach (array_reverse($data->feed) as $entry) {
 844                 bluesky_process_post($entry->post, $uid, Item::PR_NONE, 0);
 845                 if (!empty($entry->reason)) {
 846                         bluesky_process_reason($entry->reason, bluesky_get_uri($entry->post), $uid);
 847                 }
 848         }
 849
 850         // @todo Support paging
 851         // [cursor] => 1684670516000::bafyreidq3ilwslmlx72jf5vrk367xcc63s6lrhzlyup2bi3zwcvso6w2vi
 852 }
 853
 854 function bluesky_process_reason(stdClass $reason, string $uri, int $uid)
 855 {
 856         $type = '$type';
 857         if ($reason->$type != 'app.bsky.feed.defs#reasonRepost') {
 858                 return;
 859         }
 860
 861         $contact = bluesky_get_contact($reason->by, $uid, $uid);
 862
 863         $item = [
 864                 'network'       => Protocol::BLUESKY,
 865                 'uid'           => $uid,
 866                 'wall'          => false,
 867                 'uri'           => $reason->by->did . '/app.bsky.feed.repost/' . $reason->indexedAt,
 868                 'private'       => Item::UNLISTED,
 869                 'verb'          => Activity::POST,
 870                 'contact-id'    => $contact['id'],
 871                 'author-name'   => $contact['name'],
 872                 'author-link'   => $contact['url'],
 873                 'author-avatar' => $contact['avatar'],
 874                 'verb'          => Activity::ANNOUNCE,
 875                 'body'          => Activity::ANNOUNCE,
 876                 'gravity'       => Item::GRAVITY_ACTIVITY,
 877                 'object-type'   => Activity\ObjectType::NOTE,
 878                 'thr-parent'    => $uri,
 879         ];
 880
 881         if (Post::exists(['uri' => $item['uri'], 'uid' => $uid])) {
 882                 return;
 883         }
 884
 885         $item['guid']         = Item::guidFromUri($item['uri'], $contact['alias']);
 886         $item['owner-name']   = $item['author-name'];
 887         $item['owner-link']   = $item['author-link'];
 888         $item['owner-avatar'] = $item['author-avatar'];
 889         if (Item::insert($item)) {
 890                 $cdata = Contact::getPublicAndUserContactID($contact['id'], $uid);
 891                 Item::update(['post-reason' => Item::PR_ANNOUNCEMENT, 'causer-id' => $cdata['public']], ['uri' => $uri, 'uid' => $uid]);
 892         }
 893 }
 894
 895 function bluesky_fetch_notifications(int $uid)
 896 {
 897         $data = bluesky_xrpc_get($uid, 'app.bsky.notification.listNotifications');
 898         if (empty($data->notifications)) {
 899                 return;
 900         }
 901         foreach ($data->notifications as $notification) {
 902                 $uri = bluesky_get_uri($notification);
 903                 if (Post::exists(['uri' => $uri, 'uid' => $uid]) || Post::exists(['extid' => $uri, 'uid' => $uid])) {
 904                         Logger::debug('Notification already processed', ['uid' => $uid, 'reason' => $notification->reason, 'uri' => $uri, 'indexedAt' => $notification->indexedAt]);
 905                         continue;
 906                 }
 907                 Logger::debug('Process notification', ['uid' => $uid, 'reason' => $notification->reason, 'uri' => $uri, 'indexedAt' => $notification->indexedAt]);
 908                 switch ($notification->reason) {
 909                         case 'like':
 910                                 $item = bluesky_get_header($notification, $uri, $uid, $uid);
 911                                 $item['gravity'] = Item::GRAVITY_ACTIVITY;
 912                                 $item['body'] = $item['verb'] = Activity::LIKE;
 913                                 $item['thr-parent'] = bluesky_get_uri($notification->record->subject);
 914                                 $item['thr-parent'] = bluesky_fetch_missing_post($item['thr-parent'], $uid, $item['contact-id'], 0);
 915                                 if (!empty($item['thr-parent'])) {
 916                                         $data = Item::insert($item);
 917                                         Logger::debug('Got like', ['uid' => $uid, 'result' => $data, 'uri' => $uri]);
 918                                 } else {
 919                                         Logger::info('Thread parent not found', ['uid' => $uid, 'parent' => $item['thr-parent'], 'uri' => $uri]);
 920                                 }
 921                         break;
 922
 923                         case 'repost':
 924                                 $item = bluesky_get_header($notification, $uri, $uid, $uid);
 925                                 $item['gravity'] = Item::GRAVITY_ACTIVITY;
 926                                 $item['body'] = $item['verb'] = Activity::ANNOUNCE;
 927                                 $item['thr-parent'] = bluesky_get_uri($notification->record->subject);
 928                                 $item['thr-parent'] = bluesky_fetch_missing_post($item['thr-parent'], $uid, $item['contact-id'], 0);
 929                                 if (!empty($item['thr-parent'])) {
 930                                         $data = Item::insert($item);
 931                                         Logger::debug('Got repost', ['uid' => $uid, 'result' => $data, 'uri' => $uri]);
 932                                 } else {
 933                                         Logger::info('Thread parent not found', ['uid' => $uid, 'parent' => $item['thr-parent'], 'uri' => $uri]);
 934                                 }
 935                         break;
 936
 937                         case 'follow':
 938                                 $contact = bluesky_get_contact($notification->author, $uid, $uid);
 939                                 Logger::debug('New follower', ['uid' => $uid, 'nick' => $contact['nick'], 'uri' => $uri]);
 940                                 break;
 941
 942                         case 'mention':
 943                                 $data = bluesky_process_post($notification, $uid, Item::PR_PUSHED, 0);
 944                                 Logger::debug('Got mention', ['uid' => $uid, 'result' => $data, 'uri' => $uri]);
 945                                 break;
 946
 947                         case 'reply':
 948                                 $data = bluesky_process_post($notification, $uid, Item::PR_PUSHED, 0);
 949                                 Logger::debug('Got reply', ['uid' => $uid, 'result' => $data, 'uri' => $uri]);
 950                                 break;
 951
 952                         case 'quote':
 953                                 $data = bluesky_process_post($notification, $uid, Item::PR_PUSHED, 0);
 954                                 Logger::debug('Got quote', ['uid' => $uid, 'result' => $data, 'uri' => $uri]);
 955                                 break;
 956
 957                         default:
 958                                 Logger::notice('Unhandled reason', ['reason' => $notification->reason, 'uri' => $uri]);
 959                                 break;
 960                 }
 961         }
 962 }
 963
 964 function bluesky_fetch_feed(int $uid, string $feed)
 965 {
 966         $data = bluesky_xrpc_get($uid, 'app.bsky.feed.getFeed', ['feed' => $feed]);
 967         if (empty($data)) {
 968                 return;
 969         }
 970
 971         if (empty($data->feed)) {
 972                 return;
 973         }
 974
 975         $feeddata = bluesky_xrpc_get($uid, 'app.bsky.feed.getFeedGenerator', ['feed' => $feed]);
 976         if (!empty($feeddata)) {
 977                 $feedurl  = $feeddata->view->uri;
 978                 $feedname = $feeddata->view->displayName;
 979         } else {
 980                 $feedurl  = $feed;
 981                 $feedname = $feed;
 982         }
 983
 984         foreach (array_reverse($data->feed) as $entry) {
 985                 if (!Relay::isWantedLanguage($entry->post->record->text)) {
 986                         Logger::debug('Unwanted language detected', ['text' => $entry->post->record->text]);
 987                         continue;
 988                 }
 989                 $id = bluesky_process_post($entry->post, $uid, Item::PR_TAG, 0);
 990                 if (!empty($id)) {
 991                         $post = Post::selectFirst(['uri-id'], ['id' => $id]);
 992                         if (!empty($post['uri-id'])) {
 993                                 $stored = Post\Category::storeFileByURIId($post['uri-id'], $uid, Post\Category::SUBCRIPTION, $feedname, $feedurl);
 994                                 Logger::debug('Stored tag subscription for user', ['uri-id' => $post['uri-id'], 'uid' => $uid, 'name' => $feedname, 'url' => $feedurl, 'stored' => $stored]);
 995                         } else {
 996                                 Logger::notice('Post not found', ['id' => $id, 'entry' => $entry]);
 997                         }
 998                 }
 999                 if (!empty($entry->reason)) {
1000                         bluesky_process_reason($entry->reason, bluesky_get_uri($entry->post), $uid);
1001                 }
1002         }
1003 }
1004
1005 function bluesky_process_post(stdClass $post, int $uid, int $post_reason, $level): int
1006 {
1007         $uri = bluesky_get_uri($post);
1008
1009         if ($id = Post::selectFirst(['id'], ['uri' => $uri, 'uid' => $uid])) {
1010                 return $id['id'];
1011         }
1012
1013         if ($id = Post::selectFirst(['id'], ['extid' => $uri, 'uid' => $uid])) {
1014                 return $id['id'];
1015         }
1016
1017         Logger::debug('Importing post', ['uid' => $uid, 'indexedAt' => $post->indexedAt, 'uri' => $post->uri, 'cid' => $post->cid, 'root' => $post->record->reply->root ?? '']);
1018
1019         $item = bluesky_get_header($post, $uri, $uid, $uid);
1020         $item = bluesky_get_content($item, $post->record, $uri, $uid, $level);
1021         if (empty($item)) {
1022                 return 0;
1023         }
1024
1025         if (!empty($post->embed)) {
1026                 $item = bluesky_add_media($post->embed, $item, $uid, $level);
1027         }
1028
1029         if (empty($item['post-reason'])) {
1030                 $item['post-reason'] = $post_reason;
1031         }
1032
1033         return item::insert($item);
1034 }
1035
1036 function bluesky_get_header(stdClass $post, string $uri, int $uid, int $fetch_uid): array
1037 {
1038         $parts = bluesky_get_uri_parts($uri);
1039         if (empty($post->author)) {
1040                 return [];
1041         }
1042         $contact = bluesky_get_contact($post->author, $uid, $fetch_uid);
1043         $item = [
1044                 'network'       => Protocol::BLUESKY,
1045                 'uid'           => $uid,
1046                 'wall'          => false,
1047                 'uri'           => $uri,
1048                 'guid'          => $post->cid,
1049                 'private'       => Item::UNLISTED,
1050                 'verb'          => Activity::POST,
1051                 'contact-id'    => $contact['id'],
1052                 'author-name'   => $contact['name'],
1053                 'author-link'   => $contact['url'],
1054                 'author-avatar' => $contact['avatar'],
1055                 'plink'         => $contact['alias'] . '/post/' . $parts->rkey,
1056                 'source'        => json_encode($post),
1057         ];
1058
1059         $item['uri-id']       = ItemURI::getIdByURI($uri);
1060         $item['owner-name']   = $item['author-name'];
1061         $item['owner-link']   = $item['author-link'];
1062         $item['owner-avatar'] = $item['author-avatar'];
1063
1064         if (in_array($contact['rel'], [Contact::SHARING, Contact::FRIEND])) {
1065                 $item['post-reason'] = Item::PR_FOLLOWER;
1066         }
1067
1068         return $item;
1069 }
1070
1071 function bluesky_get_content(array $item, stdClass $record, string $uri, int $uid, int $level): array
1072 {
1073         if (empty($item)) {
1074                 return [];
1075         }
1076
1077         if (!empty($record->reply)) {
1078                 $item['parent-uri'] = bluesky_get_uri($record->reply->root);
1079                 if ($item['parent-uri'] != $uri) {
1080                         $item['parent-uri'] = bluesky_fetch_missing_post($item['parent-uri'], $uid, $item['contact-id'], $level);
1081                         if (empty($item['parent-uri'])) {
1082                                 return [];
1083                         }
1084                 }
1085
1086                 $item['thr-parent'] = bluesky_get_uri($record->reply->parent);
1087                 if (!in_array($item['thr-parent'], [$uri, $item['parent-uri']])) {
1088                         $item['thr-parent'] = bluesky_fetch_missing_post($item['thr-parent'], $uid, $item['contact-id'], $level, $item['parent-uri']);
1089                         if (empty($item['thr-parent'])) {
1090                                 return [];
1091                         }
1092                 }
1093         }
1094
1095         $item['body']    = bluesky_get_text($record);
1096         $item['created'] = DateTimeFormat::utc($record->createdAt, DateTimeFormat::MYSQL);
1097         return $item;
1098 }
1099
1100 function bluesky_get_text(stdClass $record): string
1101 {
1102         $text = $record->text ?? '';
1103
1104         if (empty($record->facets)) {
1105                 return $text;
1106         }
1107
1108         $facets = [];
1109         foreach ($record->facets as $facet) {
1110                 $facets[$facet->index->byteStart] = $facet;
1111         }
1112         krsort($facets);
1113
1114         foreach ($facets as $facet) {
1115                 $prefix   = substr($text, 0, $facet->index->byteStart);
1116                 $linktext = substr($text, $facet->index->byteStart, $facet->index->byteEnd - $facet->index->byteStart);
1117                 $suffix   = substr($text, $facet->index->byteEnd);
1118
1119                 $url  = '';
1120                 $type = '$type';
1121                 foreach ($facet->features as $feature) {
1122
1123                         switch ($feature->$type) {
1124                                 case 'app.bsky.richtext.facet#link':
1125                                         $url = $feature->uri;
1126                                         break;
1127
1128                                 case 'app.bsky.richtext.facet#mention':
1129                                         $contact = Contact::getByURL($feature->did, null, ['id']);
1130                                         if (!empty($contact['id'])) {
1131                                                 $url = DI::baseUrl() . '/contact/' . $contact['id'];
1132                                                 if (substr($linktext, 0, 1) == '@') {
1133                                                         $prefix .= '@';
1134                                                         $linktext = substr($linktext, 1);
1135                                                 }
1136                                         }
1137                                         break;
1138
1139                                 default:
1140                                         Logger::notice('Unhandled feature type', ['type' => $feature->$type, 'record' => $record]);
1141                                         break;
1142                         }
1143                 }
1144                 if (!empty($url)) {
1145                         $text = $prefix . '[url=' . $url . ']' . $linktext . '[/url]' . $suffix;
1146                 }
1147         }
1148         return $text;
1149 }
1150
1151 function bluesky_add_media(stdClass $embed, array $item, int $fetch_uid, int $level): array
1152 {
1153         $type = '$type';
1154         switch ($embed->$type) {
1155                 case 'app.bsky.embed.images#view':
1156                         foreach ($embed->images as $image) {
1157                                 $media = [
1158                                         'uri-id'      => $item['uri-id'],
1159                                         'type'        => Post\Media::IMAGE,
1160                                         'url'         => $image->fullsize,
1161                                         'preview'     => $image->thumb,
1162                                         'description' => $image->alt,
1163                                 ];
1164                                 Post\Media::insert($media);
1165                         }
1166                         break;
1167
1168                 case 'app.bsky.embed.external#view':
1169                         $media = [
1170                                 'uri-id' => $item['uri-id'],
1171                                 'type'        => Post\Media::HTML,
1172                                 'url'         => $embed->external->uri,
1173                                 'name'        => $embed->external->title,
1174                                 'description' => $embed->external->description,
1175                         ];
1176                         Post\Media::insert($media);
1177                         break;
1178
1179                 case 'app.bsky.embed.record#view':
1180                         $uri = bluesky_get_uri($embed->record);
1181                         $shared = Post::selectFirst(['uri-id'], ['uri' => $uri, 'uid' => $item['uid']]);
1182                         if (empty($shared)) {
1183                                 if (empty($embed->record->value)) {
1184                                         Logger::info('Record has got no value', ['record' => $embed->record]);
1185                                         break;
1186                                 }
1187                                 $shared = bluesky_get_header($embed->record, $uri, 0, $fetch_uid);
1188                                 $shared = bluesky_get_content($shared, $embed->record->value, $uri, $item['uid'], $level);
1189                                 if (!empty($shared)) {
1190                                         if (!empty($embed->record->embeds)) {
1191                                                 foreach ($embed->record->embeds as $single) {
1192                                                         $shared = bluesky_add_media($single, $shared, $fetch_uid, $level);
1193                                                 }
1194                                         }
1195                                         Item::insert($shared);
1196                                 }
1197                         }
1198                         if (!empty($shared['uri-id'])) {
1199                                 $item['quote-uri-id'] = $shared['uri-id'];
1200                         }
1201                         break;
1202
1203                 case 'app.bsky.embed.recordWithMedia#view':
1204                         $uri = bluesky_get_uri($embed->record->record);
1205                         $shared = Post::selectFirst(['uri-id'], ['uri' => $uri, 'uid' => $item['uid']]);
1206                         if (empty($shared)) {
1207                                 $shared = bluesky_get_header($embed->record->record, $uri, 0, $fetch_uid);
1208                                 $shared = bluesky_get_content($shared, $embed->record->record->value, $uri, $item['uid'], $level);
1209                                 if (!empty($shared)) {
1210                                         if (!empty($embed->record->record->embeds)) {
1211                                                 foreach ($embed->record->record->embeds as $single) {
1212                                                         $shared = bluesky_add_media($single, $shared, $fetch_uid, $level);
1213                                                 }
1214                                         }
1215                                         Item::insert($shared);
1216                                 }
1217                         }
1218                         if (!empty($shared['uri-id'])) {
1219                                 $item['quote-uri-id'] = $shared['uri-id'];
1220                         }
1221
1222                         if (!empty($embed->media)) {
1223                                 $item = bluesky_add_media($embed->media, $item, $fetch_uid, $level);
1224                         }
1225                         break;
1226
1227                 default:
1228                         Logger::notice('Unhandled embed type', ['type' => $embed->$type, 'embed' => $embed]);
1229                         break;
1230         }
1231         return $item;
1232 }
1233
1234 function bluesky_get_uri(stdClass $post): string
1235 {
1236         if (empty($post->cid)) {
1237                 Logger::info('Invalid URI', ['post' => $post]);
1238                 return '';
1239         }
1240         return $post->uri . ':' . $post->cid;
1241 }
1242
1243 function bluesky_get_uri_class(string $uri): ?stdClass
1244 {
1245         if (empty($uri)) {
1246                 return null;
1247         }
1248
1249         $elements = explode(':', $uri);
1250         if (empty($elements) || ($elements[0] != 'at')) {
1251                 $post = Post::selectFirstPost(['extid'], ['uri' => $uri]);
1252                 return bluesky_get_uri_class($post['extid'] ?? '');
1253         }
1254
1255         $class = new stdClass;
1256
1257         $class->cid = array_pop($elements);
1258         $class->uri = implode(':', $elements);
1259
1260         if ((substr_count($class->uri, '/') == 2) && (substr_count($class->cid, '/') == 2)) {
1261                 $class->uri .= ':' . $class->cid;
1262                 $class->cid = '';
1263         }
1264
1265         return $class;
1266 }
1267
1268 function bluesky_get_uri_parts(string $uri): ?stdClass
1269 {
1270         $class = bluesky_get_uri_class($uri);
1271         if (empty($class)) {
1272                 return null;
1273         }
1274
1275         $parts = explode('/', substr($class->uri, 5));
1276
1277         $class = new stdClass;
1278
1279         $class->repo       = $parts[0];
1280         $class->collection = $parts[1];
1281         $class->rkey       = $parts[2];
1282
1283         return $class;
1284 }
1285
1286 function bluesky_fetch_missing_post(string $uri, int $uid, int $causer, int $level, string $fallback = ''): string
1287 {
1288         $fetched_uri = bluesky_fetch_post($uri, $uid);
1289         if (!empty($fetched_uri)) {
1290                 return $fetched_uri;
1291         }
1292
1293         if (++$level > 100) {
1294                 Logger::info('Recursion level too deep', ['level' => $level, 'uid' => $uid, 'uri' => $uri, 'fallback' => $fallback]);
1295                 // When the level is too deep we will fallback to the parent uri.
1296                 // Allthough the threading won't be correct, we at least had stored all posts and won't try again
1297                 return $fallback;
1298         }
1299
1300         $class = bluesky_get_uri_class($uri);
1301         $fetch_uri = $class->uri;
1302
1303         Logger::debug('Fetch missing post', ['level' => $level, 'uid' => $uid, 'uri' => $uri]);
1304         $data = bluesky_xrpc_get($uid, 'app.bsky.feed.getPostThread', ['uri' => $fetch_uri]);
1305         if (empty($data)) {
1306                 Logger::info('Thread was not fetched', ['level' => $level, 'uid' => $uid, 'uri' => $uri, 'fallback' => $fallback]);
1307                 return $fallback;
1308         }
1309
1310         Logger::debug('Reply count', ['replies' => $data->thread->post->replyCount, 'level' => $level, 'uid' => $uid, 'uri' => $uri]);
1311
1312         if ($causer != 0) {
1313                 $cdata = Contact::getPublicAndUserContactID($causer, $uid);
1314         } else {
1315                 $cdata = [];
1316         }
1317
1318         return bluesky_process_thread($data->thread, $uid, $cdata, $level);
1319 }
1320
1321 function bluesky_fetch_post(string $uri, int $uid): string
1322 {
1323         if (Post::exists(['uri' => $uri, 'uid' => [$uid, 0]])) {
1324                 Logger::debug('Post exists', ['uri' => $uri]);
1325                 return $uri;
1326         }
1327
1328         $reply = Post::selectFirst(['uri'], ['extid' => $uri, 'uid' => [$uid, 0]]);
1329         if (!empty($reply['uri'])) {
1330                 Logger::debug('Post with extid exists', ['uri' => $uri]);
1331                 return $reply['uri'];
1332         }
1333         return '';
1334 }
1335
1336 function bluesky_process_thread(stdClass $thread, int $uid, array $cdata, int $level): string
1337 {
1338         if (empty($thread->post)) {
1339                 Logger::info('Invalid post', ['post' => $thread]);
1340                 return '';
1341         }
1342         $uri = bluesky_get_uri($thread->post);
1343
1344         $fetched_uri = bluesky_fetch_post($uri, $uid);
1345         if (empty($fetched_uri)) {
1346                 Logger::debug('Process missing post', ['uri' => $uri]);
1347                 $item = bluesky_get_header($thread->post, $uri, $uid, $uid);
1348                 $item = bluesky_get_content($item, $thread->post->record, $uri, $uid, $level);
1349                 if (!empty($item)) {
1350                         $item['post-reason'] = Item::PR_FETCHED;
1351
1352                         if (!empty($cdata['public'])) {
1353                                 $item['causer-id']   = $cdata['public'];
1354                         }
1355
1356                         if (!empty($thread->post->embed)) {
1357                                 $item = bluesky_add_media($thread->post->embed, $item, $uid, $level);
1358                         }
1359                         $id = Item::insert($item);
1360                         if (!$id) {
1361                                 Logger::info('Item has not not been stored', ['uri' => $uri]);
1362                                 return '';
1363                         }
1364                         Logger::debug('Stored item', ['id' => $id, 'uri' => $uri]);
1365                 } else {
1366                         Logger::info('Post has not not been fetched', ['uri' => $uri]);
1367                         return '';
1368                 }
1369         } else {
1370                 Logger::debug('Post exists', ['uri' => $uri]);
1371                 $uri = $fetched_uri;
1372         }
1373
1374         foreach ($thread->replies ?? [] as $reply) {
1375                 $reply_uri = bluesky_process_thread($reply, $uid, $cdata, $level);
1376                 Logger::debug('Reply has been processed', ['uri' => $uri, 'reply' => $reply_uri]);
1377         }
1378
1379         return $uri;
1380 }
1381
1382 function bluesky_get_contact(stdClass $author, int $uid, int $fetch_uid): array
1383 {
1384         $condition = ['network' => Protocol::BLUESKY, 'uid' => 0, 'url' => $author->did];
1385         $contact = Contact::selectFirst(['id', 'updated'], $condition);
1386
1387         $update = empty($contact) || $contact['updated'] < DateTimeFormat::utc('now -24 hours');
1388
1389         $public_fields = $fields = bluesky_get_contact_fields($author, $fetch_uid, $update);
1390
1391         $public_fields['uid'] = 0;
1392         $public_fields['rel'] = Contact::NOTHING;
1393
1394         if (empty($contact)) {
1395                 $cid = Contact::insert($public_fields);
1396         } else {
1397                 $cid = $contact['id'];
1398                 Contact::update($public_fields, ['id' => $cid], true);
1399         }
1400
1401         if ($uid != 0) {
1402                 $condition = ['network' => Protocol::BLUESKY, 'uid' => $uid, 'url' => $author->did];
1403
1404                 $contact = Contact::selectFirst(['id', 'rel', 'uid'], $condition);
1405                 if (!isset($fields['rel']) && isset($contact['rel'])) {
1406                         $fields['rel'] = $contact['rel'];
1407                 } elseif (!isset($fields['rel'])) {
1408                         $fields['rel'] = Contact::NOTHING;
1409                 }
1410         }
1411
1412         if (($uid != 0) && ($fields['rel'] != Contact::NOTHING)) {
1413                 if (empty($contact)) {
1414                         $cid = Contact::insert($fields);
1415                 } else {
1416                         $cid = $contact['id'];
1417                         Contact::update($fields, ['id' => $cid], true);
1418                 }
1419                 Logger::debug('Get user contact', ['id' => $cid, 'uid' => $uid, 'update' => $update]);
1420         } else {
1421                 Logger::debug('Get public contact', ['id' => $cid, 'uid' => $uid, 'update' => $update]);
1422         }
1423         if (!empty($author->avatar)) {
1424                 Contact::updateAvatar($cid, $author->avatar);
1425         }
1426
1427         return Contact::getById($cid);
1428 }
1429
1430 function bluesky_get_contact_fields(stdClass $author, int $uid, bool $update): array
1431 {
1432         $fields = [
1433                 'uid'      => $uid,
1434                 'network'  => Protocol::BLUESKY,
1435                 'priority' => 1,
1436                 'writable' => true,
1437                 'blocked'  => false,
1438                 'readonly' => false,
1439                 'pending'  => false,
1440                 'baseurl'  => BLUESKY_HOST,
1441                 'url'      => $author->did,
1442                 'nurl'     => $author->did,
1443                 'alias'    => BLUESKY_HOST . '/profile/' . $author->handle,
1444                 'name'     => $author->displayName ?? $author->handle,
1445                 'nick'     => $author->handle,
1446                 'addr'     => $author->handle,
1447         ];
1448
1449         if (!$update) {
1450                 Logger::debug('Got contact fields', ['uid' => $uid, 'url' => $fields['url']]);
1451                 return $fields;
1452         }
1453
1454         $data = bluesky_xrpc_get($uid, 'app.bsky.actor.getProfile', ['actor' => $author->did]);
1455         if (empty($data)) {
1456                 Logger::debug('Error fetching contact fields', ['uid' => $uid, 'url' => $fields['url']]);
1457                 return $fields;
1458         }
1459
1460         $fields['updated'] = DateTimeFormat::utcNow(DateTimeFormat::MYSQL);
1461
1462         if (!empty($data->description)) {
1463                 $fields['about'] = HTML::toBBCode($data->description);
1464         }
1465
1466         if (!empty($data->banner)) {
1467                 $fields['header'] = $data->banner;
1468         }
1469
1470         if (!empty($data->viewer)) {
1471                 if (!empty($data->viewer->following) && !empty($data->viewer->followedBy)) {
1472                         $fields['rel'] = Contact::FRIEND;
1473                 } elseif (!empty($data->viewer->following) && empty($data->viewer->followedBy)) {
1474                         $fields['rel'] = Contact::SHARING;
1475                 } elseif (empty($data->viewer->following) && !empty($data->viewer->followedBy)) {
1476                         $fields['rel'] = Contact::FOLLOWER;
1477                 } else {
1478                         $fields['rel'] = Contact::NOTHING;
1479                 }
1480         }
1481
1482         Logger::debug('Got updated contact fields', ['uid' => $uid, 'url' => $fields['url']]);
1483         return $fields;
1484 }
1485
1486 function bluesky_get_feeds(int $uid): array
1487 {
1488         $type = '$type';
1489         $preferences = bluesky_get_preferences($uid);
1490         foreach ($preferences->preferences as $preference) {
1491                 if ($preference->$type == 'app.bsky.actor.defs#savedFeedsPref') {
1492                         return $preference->pinned ?? [];
1493                 }
1494         }
1495         return [];
1496 }
1497
1498 function bluesky_get_preferences(int $uid): stdClass
1499 {
1500         $cachekey = 'bluesky:preferences:' . $uid;
1501         $data = DI::cache()->get($cachekey);
1502         if (!is_null($data)) {
1503                 return $data;
1504         }
1505
1506         $data = bluesky_xrpc_get($uid, 'app.bsky.actor.getPreferences');
1507
1508         DI::cache()->set($cachekey, $data, Duration::HOUR);
1509         return $data;
1510 }
1511
1512 function bluesky_get_did(int $uid, string $handle): string
1513 {
1514         $data = bluesky_get($uid, '/xrpc/com.atproto.identity.resolveHandle?handle=' . urlencode($handle));
1515         if (empty($data)) {
1516                 return '';
1517         }
1518         Logger::debug('Got DID', ['return' => $data]);
1519         return $data->did;
1520 }
1521
1522 function bluesky_get_token(int $uid): string
1523 {
1524         $token   = DI::pConfig()->get($uid, 'bluesky', 'access_token');
1525         $created = DI::pConfig()->get($uid, 'bluesky', 'token_created');
1526         if (empty($token)) {
1527                 return '';
1528         }
1529
1530         if ($created + 300 < time()) {
1531                 return bluesky_refresh_token($uid);
1532         }
1533         return $token;
1534 }
1535
1536 function bluesky_refresh_token(int $uid): string
1537 {
1538         $token = DI::pConfig()->get($uid, 'bluesky', 'refresh_token');
1539
1540         $data = bluesky_post($uid, '/xrpc/com.atproto.server.refreshSession', '', ['Authorization' => ['Bearer ' . $token]]);
1541         if (empty($data)) {
1542                 return '';
1543         }
1544
1545         Logger::debug('Refreshed token', ['return' => $data]);
1546         DI::pConfig()->set($uid, 'bluesky', 'access_token', $data->accessJwt);
1547         DI::pConfig()->set($uid, 'bluesky', 'refresh_token', $data->refreshJwt);
1548         DI::pConfig()->set($uid, 'bluesky', 'token_created', time());
1549         return $data->accessJwt;
1550 }
1551
1552 function bluesky_create_token(int $uid, string $password): string
1553 {
1554         $did = DI::pConfig()->get($uid, 'bluesky', 'did');
1555
1556         $data = bluesky_post($uid, '/xrpc/com.atproto.server.createSession', json_encode(['identifier' => $did, 'password' => $password]), ['Content-type' => 'application/json']);
1557         if (empty($data)) {
1558                 return '';
1559         }
1560
1561         Logger::debug('Created token', ['return' => $data]);
1562         DI::pConfig()->set($uid, 'bluesky', 'access_token', $data->accessJwt);
1563         DI::pConfig()->set($uid, 'bluesky', 'refresh_token', $data->refreshJwt);
1564         DI::pConfig()->set($uid, 'bluesky', 'token_created', time());
1565         return $data->accessJwt;
1566 }
1567
1568 function bluesky_xrpc_post(int $uid, string $url, $parameters): ?stdClass
1569 {
1570         return bluesky_post($uid, '/xrpc/' . $url, json_encode($parameters),  ['Content-type' => 'application/json', 'Authorization' => ['Bearer ' . bluesky_get_token($uid)]]);
1571 }
1572
1573 function bluesky_post(int $uid, string $url, string $params, array $headers): ?stdClass
1574 {
1575         try {
1576                 $curlResult = DI::httpClient()->post(DI::pConfig()->get($uid, 'bluesky', 'host') . $url, $params, $headers);
1577         } catch (\Exception $e) {
1578                 Logger::notice('Exception on post', ['exception' => $e]);
1579                 return null;
1580         }
1581
1582         if (!$curlResult->isSuccess()) {
1583                 Logger::notice('API Error', ['error' => json_decode($curlResult->getBody()) ?: $curlResult->getBody()]);
1584                 return null;
1585         }
1586
1587         return json_decode($curlResult->getBody());
1588 }
1589
1590 function bluesky_xrpc_get(int $uid, string $url, array $parameters = []): ?stdClass
1591 {
1592         if (!empty($parameters)) {
1593                 $url .= '?' . http_build_query($parameters);
1594         }
1595
1596         return bluesky_get($uid, '/xrpc/' . $url, HttpClientAccept::JSON, [HttpClientOptions::HEADERS => ['Authorization' => ['Bearer ' . bluesky_get_token($uid)]]]);
1597 }
1598
1599 function bluesky_get(int $uid, string $url, string $accept_content = HttpClientAccept::DEFAULT, array $opts = []): ?stdClass
1600 {
1601         try {
1602                 $curlResult = DI::httpClient()->get(DI::pConfig()->get($uid, 'bluesky', 'host') . $url, $accept_content, $opts);
1603         } catch (\Exception $e) {
1604                 Logger::notice('Exception on get', ['exception' => $e]);
1605                 return null;
1606         }
1607
1608         if (!$curlResult->isSuccess()) {
1609                 Logger::notice('API Error', ['error' => json_decode($curlResult->getBody()) ?: $curlResult->getBody()]);
1610                 return null;
1611         }
1612
1613         return json_decode($curlResult->getBody());
1614 }