src/Model/Post/UserNotification.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Model\Post;
  23
  24 use BadMethodCallException;
  25 use Exception;
  26 use Friendica\Core\Hook;
  27 use Friendica\Core\Logger;
  28 use Friendica\Database\Database;
  29 use Friendica\Database\DBA;
  30 use Friendica\Database\DBStructure;
  31 use Friendica\DI;
  32 use Friendica\Model\Contact;
  33 use Friendica\Model\Post;
  34 use Friendica\Model\Subscription;
  35 use Friendica\Model\Tag;
  36 use Friendica\Network\HTTPException;
  37 use Friendica\Protocol\Activity;
  38 use Friendica\Util\DateTimeFormat;
  39 use Friendica\Util\Strings;
  40
  41 class UserNotification
  42 {
  43         // Notification types
  44         const TYPE_NONE                   = 0;
  45         const TYPE_EXPLICIT_TAGGED        = 1;
  46         const TYPE_IMPLICIT_TAGGED        = 2;
  47         const TYPE_THREAD_COMMENT         = 4;
  48         const TYPE_DIRECT_COMMENT         = 8;
  49         const TYPE_COMMENT_PARTICIPATION  = 16;
  50         const TYPE_ACTIVITY_PARTICIPATION = 32;
  51         const TYPE_DIRECT_THREAD_COMMENT  = 64;
  52         const TYPE_SHARED                 = 128;
  53
  54         /**
  55          * Insert a new user notification entry
  56          *
  57          * @param integer $uri_id
  58          * @param integer $uid
  59          * @param array   $data
  60          * @return bool   success
  61          * @throws Exception
  62          */
  63         public static function insert(int $uri_id, int $uid, array $data = []): bool
  64         {
  65                 if (empty($uri_id)) {
  66                         throw new BadMethodCallException('Empty URI_id');
  67                 }
  68
  69                 $fields = DBStructure::getFieldsForTable('post-user-notification', $data);
  70
  71                 $fields['uri-id'] = $uri_id;
  72                 $fields['uid']    = $uid;
  73
  74                 return DBA::insert('post-user-notification', $fields, Database::INSERT_IGNORE);
  75         }
  76
  77         /**
  78          * Update a user notification entry
  79          *
  80          * @param integer $uri_id
  81          * @param integer $uid
  82          * @param array   $data
  83          * @param bool    $insert_if_missing
  84          * @return bool
  85          * @throws Exception
  86          */
  87         public static function update(int $uri_id, int $uid, array $data = [], bool $insert_if_missing = false): bool
  88         {
  89                 if (empty($uri_id)) {
  90                         throw new BadMethodCallException('Empty URI_id');
  91                 }
  92
  93                 $fields = DBStructure::getFieldsForTable('post-user-notification', $data);
  94
  95                 // Remove the key fields
  96                 unset($fields['uri-id']);
  97                 unset($fields['uid']);
  98
  99                 if (empty($fields)) {
 100                         return true;
 101                 }
 102
 103                 return DBA::update('post-user-notification', $fields, ['uri-id' => $uri_id, 'uid' => $uid], $insert_if_missing ? true : []);
 104         }
 105
 106         /**
 107          * Delete a row from the post-user-notification table
 108          *
 109          * @param array $conditions  Field condition(s)
 110          * @param array $options     - cascade: If true we delete records in other tables that depend on the one we're deleting through
 111          *                           relations (default: true)
 112          *
 113          * @return boolean was the deletion successful?
 114          * @throws Exception
 115          */
 116         public static function delete(array $conditions, array $options = []): bool
 117         {
 118                 return DBA::delete('post-user-notification', $conditions, $options);
 119         }
 120
 121         /**
 122          * Checks an item for notifications and sets the "notification-type" field
 123          *
 124          * @ToDo:
 125          * - Check for mentions in posts with "uid=0" where the user hadn't interacted before
 126          *
 127          * @param int $uri_id URI ID
 128          * @param int $uid    user ID
 129          * @throws Exception
 130          */
 131         public static function setNotification(int $uri_id, int $uid)
 132         {
 133                 $fields = ['id', 'uri-id', 'parent-uri-id', 'uid', 'body', 'parent', 'gravity', 'vid', 'gravity',
 134                            'private', 'contact-id', 'thr-parent', 'thr-parent-id', 'parent-uri-id', 'parent-uri', 'author-id', 'verb'];
 135                 $item   = Post::selectFirst($fields, ['uri-id' => $uri_id, 'uid' => $uid, 'origin' => false]);
 136                 if (!DBA::isResult($item)) {
 137                         return;
 138                 }
 139
 140                 // "Activity::FOLLOW" is an automated activity, so we ignore it here
 141                 if ($item['verb'] == Activity::FOLLOW) {
 142                         return;
 143                 }
 144
 145                 if ($item['uid'] == 0) {
 146                         $uids = [];
 147                 } else {
 148                         // Always include the item user
 149                         $uids = [$item['uid']];
 150                 }
 151
 152                 // Add every user who participated so far in this thread
 153                 // This can only happen with participations on global items. (means: uid = 0)
 154                 $users = DBA::p("SELECT DISTINCT(`contact-uid`) AS `uid` FROM `post-user-view`
 155                         WHERE `contact-uid` != 0 AND `parent-uri-id` = ? AND `uid` = ?", $item['parent-uri-id'], $uid);
 156                 while ($user = DBA::fetch($users)) {
 157                         $uids[] = $user['uid'];
 158                 }
 159                 DBA::close($users);
 160
 161                 foreach (array_unique($uids) as $uid) {
 162                         self::setNotificationForUser($item, $uid);
 163                 }
 164         }
 165
 166         /**
 167          * Checks an item for notifications for the given user and sets the "notification-type" field
 168          *
 169          * @param array $item Item array
 170          * @param int   $uid  User ID
 171          * @throws HTTPException\InternalServerErrorException
 172          */
 173         private static function setNotificationForUser(array $item, int $uid)
 174         {
 175                 if (Post\ThreadUser::getIgnored($item['parent-uri-id'], $uid)) {
 176                         return;
 177                 }
 178
 179                 $notification_type = self::TYPE_NONE;
 180
 181                 if (self::checkShared($item, $uid)) {
 182                         $notification_type = $notification_type | self::TYPE_SHARED;
 183                         self::insertNotificationByItem(self::TYPE_SHARED, $uid, $item);
 184                         $notified = true;
 185                 } else {
 186                         $notified = false;
 187                 }
 188
 189                 $profiles = self::getProfileForUser($uid);
 190
 191                 // Fetch all contacts for the given profiles
 192                 $contacts = [];
 193
 194                 $ret = DBA::select('contact', ['id'], ['uid' => 0, 'nurl' => $profiles]);
 195                 while ($contact = DBA::fetch($ret)) {
 196                         $contacts[] = $contact['id'];
 197                 }
 198                 DBA::close($ret);
 199
 200                 // Don't create notifications for user's posts
 201                 if (in_array($item['author-id'], $contacts)) {
 202                         return;
 203                 }
 204
 205                 if (self::checkExplicitMention($item, $profiles)) {
 206                         $notification_type = $notification_type | self::TYPE_EXPLICIT_TAGGED;
 207                         if (!$notified) {
 208                                 self::insertNotificationByItem(self::TYPE_EXPLICIT_TAGGED, $uid, $item);
 209                                 $notified = true;
 210                         }
 211                 }
 212
 213                 if (self::checkImplicitMention($item, $profiles)) {
 214                         $notification_type = $notification_type | self::TYPE_IMPLICIT_TAGGED;
 215                         if (!$notified) {
 216                                 self::insertNotificationByItem(self::TYPE_IMPLICIT_TAGGED, $uid, $item);
 217                                 $notified = true;
 218                         }
 219                 }
 220
 221                 if (self::checkDirectComment($item, $contacts)) {
 222                         $notification_type = $notification_type | self::TYPE_DIRECT_COMMENT;
 223                         if (!$notified) {
 224                                 self::insertNotificationByItem(self::TYPE_DIRECT_COMMENT, $uid, $item);
 225                                 $notified = true;
 226                         }
 227                 }
 228
 229                 if (self::checkDirectCommentedThread($item, $contacts)) {
 230                         $notification_type = $notification_type | self::TYPE_DIRECT_THREAD_COMMENT;
 231                         if (!$notified) {
 232                                 self::insertNotificationByItem(self::TYPE_DIRECT_THREAD_COMMENT, $uid, $item);
 233                                 $notified = true;
 234                         }
 235                 }
 236
 237                 if (self::checkCommentedThread($item, $contacts)) {
 238                         $notification_type = $notification_type | self::TYPE_THREAD_COMMENT;
 239                         if (!$notified) {
 240                                 self::insertNotificationByItem(self::TYPE_THREAD_COMMENT, $uid, $item);
 241                                 $notified = true;
 242                         }
 243                 }
 244
 245                 if (self::checkCommentedParticipation($item, $contacts)) {
 246                         $notification_type = $notification_type | self::TYPE_COMMENT_PARTICIPATION;
 247                         if (!$notified) {
 248                                 self::insertNotificationByItem(self::TYPE_COMMENT_PARTICIPATION, $uid, $item);
 249                                 $notified = true;
 250                         }
 251                 }
 252
 253                 if (self::checkActivityParticipation($item, $contacts)) {
 254                         $notification_type = $notification_type | self::TYPE_ACTIVITY_PARTICIPATION;
 255                         if (!$notified) {
 256                                 self::insertNotificationByItem(self::TYPE_ACTIVITY_PARTICIPATION, $uid, $item);
 257                         }
 258                 }
 259
 260                 // Only create notifications for posts and comments, not for activities
 261                 if (empty($notification_type) || !in_array($item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT])) {
 262                         return;
 263                 }
 264
 265                 Logger::info('Set notification', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'notification-type' => $notification_type]);
 266
 267                 $fields = ['notification-type' => $notification_type];
 268                 Post\User::update($item['uri-id'], $uid, $fields);
 269                 self::update($item['uri-id'], $uid, $fields, true);
 270         }
 271
 272         /**
 273          * Add a notification entry for a given item array
 274          *
 275          * @param int   $type User notification type
 276          * @param int   $uid  User ID
 277          * @param array $item Item array
 278          * @return void
 279          * @throws Exception
 280          */
 281         private static function insertNotificationByItem(int $type, int $uid, array $item): void
 282         {
 283                 if (($item['gravity'] == GRAVITY_ACTIVITY) &&
 284                         !in_array($type, [self::TYPE_DIRECT_COMMENT, self::TYPE_DIRECT_THREAD_COMMENT])) {
 285                         // Activities are only stored when performed on the user's post or comment
 286                         return;
 287                 }
 288
 289                 $fields = [
 290                         'uid' => $uid,
 291                         'vid' => $item['vid'],
 292                         'type' => $type,
 293                         'actor-id' => $item['author-id'],
 294                         'parent-uri-id' => $item['parent-uri-id'],
 295                         'created' => DateTimeFormat::utcNow(),
 296                 ];
 297
 298                 if ($item['gravity'] == GRAVITY_ACTIVITY) {
 299                         $fields['target-uri-id'] = $item['thr-parent-id'];
 300                 } else {
 301                         $fields['target-uri-id'] = $item['uri-id'];
 302                 }
 303
 304                 if (DBA::insert('notification', $fields, Database::INSERT_IGNORE)) {
 305                         $id = DBA::lastInsertId();
 306                         if (!empty($id)) {
 307                                 Subscription::pushByNotificationId($id);
 308                         }
 309                 }
 310         }
 311
 312         /**
 313          * Add a notification entry
 314          *
 315          * @param int $actor Contact ID of the actor
 316          * @param int $vid   Verb ID
 317          * @param int $uid   User ID
 318          * @return boolean
 319          * @throws Exception
 320          */
 321         public static function insertNotification(int $actor, int $vid, int $uid): bool
 322         {
 323                 $fields = [
 324                         'uid' => $uid,
 325                         'vid' => $vid,
 326                         'type' => self::TYPE_NONE,
 327                         'actor-id' => $actor,
 328                         'created' => DateTimeFormat::utcNow(),
 329                 ];
 330
 331                 $ret = DBA::insert('notification', $fields, Database::INSERT_IGNORE);
 332                 if ($ret) {
 333                         $id = DBA::lastInsertId();
 334                         if (!empty($id)) {
 335                                 Subscription::pushByNotificationId($id);
 336                         }
 337                 }
 338                 return $ret;
 339         }
 340
 341         /**
 342          * Fetch all profiles (contact URL) of a given user
 343          *
 344          * @param int $uid User ID
 345          *
 346          * @return array Profile links
 347          * @throws HTTPException\InternalServerErrorException
 348          */
 349         private static function getProfileForUser(int $uid): array
 350         {
 351                 $notification_data = ['uid' => $uid, 'profiles' => []];
 352                 Hook::callAll('check_item_notification', $notification_data);
 353
 354                 $profiles = $notification_data['profiles'];
 355
 356                 $user = DBA::selectFirst('user', ['nickname'], ['uid' => $uid]);
 357                 if (!DBA::isResult($user)) {
 358                         return [];
 359                 }
 360
 361                 $owner = DBA::selectFirst('contact', ['url', 'alias'], ['self' => true, 'uid' => $uid]);
 362                 if (!DBA::isResult($owner)) {
 363                         return [];
 364                 }
 365
 366                 // This is our regular URL format
 367                 $profiles[] = $owner['url'];
 368
 369                 // Now the alias
 370                 $profiles[] = $owner['alias'];
 371
 372                 // Notifications from Diaspora often have a URL in the Diaspora format
 373                 $profiles[] = DI::baseUrl() . '/u/' . $user['nickname'];
 374
 375                 // Validate and add profile links
 376                 foreach ($profiles as $key => $profile) {
 377                         // Check for invalid profile urls (without scheme, host or path) and remove them
 378                         if (empty(parse_url($profile, PHP_URL_SCHEME)) || empty(parse_url($profile, PHP_URL_HOST)) || empty(parse_url($profile, PHP_URL_PATH))) {
 379                                 unset($profiles[$key]);
 380                                 continue;
 381                         }
 382
 383                         // Add the normalized form
 384                         $profile    = Strings::normaliseLink($profile);
 385                         $profiles[] = $profile;
 386
 387                         // Add the SSL form
 388                         $profile    = str_replace('http://', 'https://', $profile);
 389                         $profiles[] = $profile;
 390                 }
 391
 392                 return array_unique($profiles);
 393         }
 394
 395         /**
 396          * Check for a "shared" notification for every new post of contacts from the given user
 397          *
 398          * @param array $item
 399          * @param int   $uid User ID
 400          * @return bool A contact had shared something
 401          * @throws Exception
 402          */
 403         private static function checkShared(array $item, int $uid): bool
 404         {
 405                 // Only check on original posts and reshare ("announce") activities, otherwise return
 406                 if (($item['gravity'] != GRAVITY_PARENT) && ($item['verb'] != Activity::ANNOUNCE)) {
 407                         return false;
 408                 }
 409
 410                 // Check if the contact posted or shared something directly
 411                 if (DBA::exists('contact', ['id' => $item['contact-id'], 'notify_new_posts' => true])) {
 412                         return true;
 413                 }
 414
 415                 // The following check doesn't make sense on activities, so quit here
 416                 if ($item['verb'] == Activity::ANNOUNCE) {
 417                         return false;
 418                 }
 419
 420                 // Check if the contact is a mentioned forum
 421                 $tags = DBA::select('tag-view', ['url'], ['uri-id' => $item['uri-id'], 'type' => [Tag::MENTION, Tag::EXCLUSIVE_MENTION]]);
 422                 while ($tag = DBA::fetch($tags)) {
 423                         $condition = ['nurl' => Strings::normaliseLink($tag['url']), 'uid' => $uid, 'notify_new_posts' => true, 'contact-type' => Contact::TYPE_COMMUNITY];
 424                         if (DBA::exists('contact', $condition)) {
 425                                 return true;
 426                         }
 427                 }
 428                 DBA::close($tags);
 429
 430                 return false;
 431         }
 432
 433         /**
 434          * Check for an implicit mention (only in tags, not in body) of the given user
 435          *
 436          * @param array $item
 437          * @param array $profiles Profile links
 438          * @return bool The user is mentioned
 439          * @throws Exception
 440          */
 441         private static function checkImplicitMention(array $item, array $profiles): bool
 442         {
 443                 $mentions = Tag::getByURIId($item['uri-id'], [Tag::IMPLICIT_MENTION]);
 444                 foreach ($mentions as $mention) {
 445                         foreach ($profiles as $profile) {
 446                                 if (Strings::compareLink($profile, $mention['url'])) {
 447                                         return true;
 448                                 }
 449                         }
 450                 }
 451
 452                 return false;
 453         }
 454
 455         /**
 456          * Check for an explicit mention (tag and body) of the given user
 457          *
 458          * @param array $item
 459          * @param array $profiles Profile links
 460          * @return bool The user is mentioned
 461          * @throws Exception
 462          */
 463         private static function checkExplicitMention(array $item, array $profiles): bool
 464         {
 465                 $mentions = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION]);
 466                 foreach ($mentions as $mention) {
 467                         foreach ($profiles as $profile) {
 468                                 if (Strings::compareLink($profile, $mention['url'])) {
 469                                         return true;
 470                                 }
 471                         }
 472                 }
 473
 474                 return false;
 475         }
 476
 477         /**
 478          * Check if the given user had created this thread
 479          *
 480          * @param array $item
 481          * @param array $contacts Array of contact IDs
 482          * @return bool The user had created this thread
 483          * @throws Exception
 484          */
 485         private static function checkCommentedThread(array $item, array $contacts): bool
 486         {
 487                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_PARENT];
 488                 return Post::exists($condition);
 489         }
 490
 491         /**
 492          * Check for a direct comment to a post of the given user
 493          *
 494          * @param array $item
 495          * @param array $contacts Array of contact IDs
 496          * @return bool The item is a direct comment to a user comment
 497          * @throws Exception
 498          */
 499         private static function checkDirectComment(array $item, array $contacts): bool
 500         {
 501                 $condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_COMMENT];
 502                 return Post::exists($condition);
 503         }
 504
 505         /**
 506          * Check for a direct comment to the starting post of the given user
 507          *
 508          * @param array $item
 509          * @param array $contacts Array of contact IDs
 510          * @return bool The user had created this thread
 511          * @throws Exception
 512          */
 513         private static function checkDirectCommentedThread(array $item, array $contacts): bool
 514         {
 515                 $condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_PARENT];
 516                 return Post::exists($condition);
 517         }
 518
 519         /**
 520          *  Check if the user had commented in this thread
 521          *
 522          * @param array $item
 523          * @param array $contacts Array of contact IDs
 524          * @return bool The user had commented in the thread
 525          * @throws Exception
 526          */
 527         private static function checkCommentedParticipation(array $item, array $contacts): bool
 528         {
 529                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_COMMENT];
 530                 return Post::exists($condition);
 531         }
 532
 533         /**
 534          * Check if the user had interacted in this thread (Like, Dislike, ...)
 535          *
 536          * @param array $item
 537          * @param array $contacts Array of contact IDs
 538          * @return bool The user had interacted in the thread
 539          * @throws Exception
 540          */
 541         private static function checkActivityParticipation(array $item, array $contacts): bool
 542         {
 543                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY];
 544                 return Post::exists($condition);
 545         }
 546 }