src/Model/Post.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   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;
  23
  24 use Friendica\Core\Logger;
  25 use Friendica\Database\DBA;
  26 use Friendica\Database\DBStructure;
  27 use Friendica\Protocol\Activity;
  28
  29 class Post
  30 {
  31         /**
  32          * Fetch a single post row
  33          *
  34          * @param mixed $stmt statement object
  35          * @return array|false current row or false
  36          * @throws \Exception
  37          */
  38         public static function fetch($stmt)
  39         {
  40                 $row = DBA::fetch($stmt);
  41
  42                 if (!is_array($row)) {
  43                         return $row;
  44                 }
  45
  46                 if (array_key_exists('verb', $row)) {
  47                         if (in_array($row['verb'], Item::ACTIVITIES)) {
  48                                 if (array_key_exists('title', $row)) {
  49                                         $row['title'] = '';
  50                                 }
  51                                 if (array_key_exists('body', $row)) {
  52                                         $row['body'] = $row['verb'];
  53                                 }
  54                                 if (array_key_exists('object', $row)) {
  55                                         $row['object'] = '';
  56                                 }
  57                                 if (array_key_exists('object-type', $row)) {
  58                                         $row['object-type'] = Activity\ObjectType::NOTE;
  59                                 }
  60                         } elseif (in_array($row['verb'], ['', Activity::POST, Activity::SHARE])) {
  61                                 // Posts don't have a target - but having tags or files.
  62                                 if (array_key_exists('target', $row)) {
  63                                         $row['target'] = '';
  64                                 }
  65                         }
  66                 }
  67
  68                 return $row;
  69         }
  70
  71         /**
  72          * Fills an array with data from an post query
  73          *
  74          * @param object $stmt statement object
  75          * @param bool   $do_close
  76          * @return array Data array
  77          */
  78         public static function toArray($stmt, $do_close = true) {
  79                 if (is_bool($stmt)) {
  80                         return $stmt;
  81                 }
  82
  83                 $data = [];
  84                 while ($row = self::fetch($stmt)) {
  85                         $data[] = $row;
  86                 }
  87                 if ($do_close) {
  88                         DBA::close($stmt);
  89                 }
  90                 return $data;
  91         }
  92
  93         /**
  94          * Check if post data exists
  95          *
  96          * @param array $condition array of fields for condition
  97          *
  98          * @return boolean Are there rows for that condition?
  99          * @throws \Exception
 100          */
 101         public static function exists($condition) {
 102                 return DBA::exists('post-view', $condition);
 103         }
 104
 105         /**
 106          * Counts the posts satisfying the provided condition
 107          *
 108          * @param array        $condition array of fields for condition
 109          * @param array        $params    Array of several parameters
 110          *
 111          * @return int
 112          *
 113          * Example:
 114          * $condition = ["uid" => 1, "network" => 'dspr'];
 115          * or:
 116          * $condition = ["`uid` = ? AND `network` IN (?, ?)", 1, 'dfrn', 'dspr'];
 117          *
 118          * $count = Post::count($condition);
 119          * @throws \Exception
 120          */
 121         public static function count(array $condition = [], array $params = [])
 122         {
 123                 return DBA::count('post-view', $condition, $params);
 124         }
 125
 126         /**
 127          * Retrieve a single record from the post table and returns it in an associative array
 128          *
 129          * @param array $fields
 130          * @param array $condition
 131          * @param array $params
 132          * @return bool|array
 133          * @throws \Exception
 134          * @see   DBA::select
 135          */
 136         public static function selectFirst(array $fields = [], array $condition = [], $params = [])
 137         {
 138                 $params['limit'] = 1;
 139
 140                 $result = self::select($fields, $condition, $params);
 141
 142                 if (is_bool($result)) {
 143                         return $result;
 144                 } else {
 145                         $row = self::fetch($result);
 146                         DBA::close($result);
 147                         return $row;
 148                 }
 149         }
 150
 151         /**
 152          * Select rows from the post table and returns them as an array
 153          *
 154          * @param array $selected  Array of selected fields, empty for all
 155          * @param array $condition Array of fields for condition
 156          * @param array $params    Array of several parameters
 157          *
 158          * @return array
 159          * @throws \Exception
 160          */
 161         public static function selectToArray(array $fields = [], array $condition = [], $params = [])
 162         {
 163                 $result = self::select($fields, $condition, $params);
 164
 165                 if (is_bool($result)) {
 166                         return [];
 167                 }
 168
 169                 $data = [];
 170                 while ($row = self::fetch($result)) {
 171                         $data[] = $row;
 172                 }
 173                 DBA::close($result);
 174
 175                 return $data;
 176         }
 177
 178         /**
 179          * Select rows from the given view
 180          *
 181          * @param string $view      View (post-view or post-thread-view)
 182          * @param array  $selected  Array of selected fields, empty for all
 183          * @param array  $condition Array of fields for condition
 184          * @param array  $params    Array of several parameters
 185          *
 186          * @return boolean|object
 187          * @throws \Exception
 188          */
 189         private static function selectView(string $view, array $selected = [], array $condition = [], $params = [])
 190         {
 191                 if (empty($selected)) {
 192                         $selected = array_merge(['author-addr', 'author-nick', 'owner-addr', 'owner-nick', 'causer-addr', 'causer-nick',
 193                                 'causer-network', 'photo', 'name-date', 'uri-date', 'avatar-date', 'thumb', 'dfrn-id',
 194                                 'parent-guid', 'parent-network', 'parent-author-id', 'parent-author-link', 'parent-author-name',
 195                                 'parent-author-network', 'signed_text', 'language', 'raw-body'], Item::DISPLAY_FIELDLIST, Item::ITEM_FIELDLIST);
 196
 197                         if ($view != 'post-view') {
 198                                 $selected = array_merge($selected, ['ignored', 'iid']);
 199                         }
 200                 }
 201
 202                 $selected = array_unique($selected);
 203
 204                 return DBA::select($view, $selected, $condition, $params);
 205         }
 206
 207         /**
 208          * Select rows from the post table
 209          *
 210          * @param array $selected  Array of selected fields, empty for all
 211          * @param array $condition Array of fields for condition
 212          * @param array $params    Array of several parameters
 213          *
 214          * @return boolean|object
 215          * @throws \Exception
 216          */
 217         public static function select(array $selected = [], array $condition = [], $params = [])
 218         {
 219                 return self::selectView('post-view', $selected, $condition, $params);
 220         }
 221
 222         /**
 223          * Select rows from the post table
 224          *
 225          * @param array $selected  Array of selected fields, empty for all
 226          * @param array $condition Array of fields for condition
 227          * @param array $params    Array of several parameters
 228          *
 229          * @return boolean|object
 230          * @throws \Exception
 231          */
 232         public static function selectThread(array $selected = [], array $condition = [], $params = [])
 233         {
 234                 return self::selectView('post-thread-view', $selected, $condition, $params);
 235         }
 236
 237         /**
 238          * Select rows from the given view for a given user
 239          *
 240          * @param string  $view      View (post-view or post-thread-view)
 241          * @param integer $uid       User ID
 242          * @param array   $selected  Array of selected fields, empty for all
 243          * @param array   $condition Array of fields for condition
 244          * @param array   $params    Array of several parameters
 245          *
 246          * @return boolean|object
 247          * @throws \Exception
 248          */
 249         private static function selectViewForUser(string $view, $uid, array $selected = [], array $condition = [], $params = [])
 250         {
 251                 if (empty($selected)) {
 252                         $selected = Item::DISPLAY_FIELDLIST;
 253                 }
 254
 255                 $condition = DBA::mergeConditions($condition,
 256                         ["`visible` AND NOT `deleted` AND NOT `moderated`
 257                         AND NOT `author-blocked` AND NOT `owner-blocked`
 258                         AND (NOT `causer-blocked` OR `causer-id` = ?) AND NOT `contact-blocked`
 259                         AND ((NOT `contact-readonly` AND NOT `contact-pending` AND (`contact-rel` IN (?, ?)))
 260                                 OR `self` OR `gravity` != ? OR `contact-uid` = ?)
 261                         AND NOT EXISTS (SELECT `uri-id` FROM `post-user` WHERE `hidden` AND `uri-id` = `" . $view . "`.`uri-id` AND `uid` = ?)
 262                         AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `author-id` AND `blocked`)
 263                         AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `owner-id` AND `blocked`)
 264                         AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `author-id` AND `ignored` AND `gravity` = ?)
 265                         AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `owner-id` AND `ignored` AND `gravity` = ?)",
 266                         0, Contact::SHARING, Contact::FRIEND, GRAVITY_PARENT, 0, $uid, $uid, $uid, $uid, GRAVITY_PARENT, $uid, GRAVITY_PARENT]);
 267
 268                 $select_string = '';
 269
 270                 if (in_array('pinned', $selected)) {
 271                         $selected = array_flip($selected);
 272                         unset($selected['pinned']);
 273                         $selected = array_flip($selected);
 274
 275                         $select_string = "(SELECT `pinned` FROM `post-thread-user` WHERE `uri-id` = `" . $view . "`.`uri-id` AND uid=`" . $view . "`.`uid`) AS `pinned`, ";
 276                 }
 277
 278                 $select_string .= implode(', ', array_map([DBA::class, 'quoteIdentifier'], $selected));
 279
 280                 $condition_string = DBA::buildCondition($condition);
 281                 $param_string = DBA::buildParameter($params);
 282
 283                 $sql = "SELECT " . $select_string . " FROM `" . $view . "` " . $condition_string . $param_string;
 284                 $sql = DBA::cleanQuery($sql);
 285
 286                 return DBA::p($sql, $condition);
 287         }
 288
 289         /**
 290          * Select rows from the post view for a given user
 291          *
 292          * @param integer $uid       User ID
 293          * @param array   $selected  Array of selected fields, empty for all
 294          * @param array   $condition Array of fields for condition
 295          * @param array   $params    Array of several parameters
 296          *
 297          * @return boolean|object
 298          * @throws \Exception
 299          */
 300         public static function selectForUser($uid, array $selected = [], array $condition = [], $params = [])
 301         {
 302                 return self::selectViewForUser('post-view', $uid, $selected, $condition, $params);
 303         }
 304
 305                 /**
 306          * Select rows from the post view for a given user
 307          *
 308          * @param integer $uid       User ID
 309          * @param array   $selected  Array of selected fields, empty for all
 310          * @param array   $condition Array of fields for condition
 311          * @param array   $params    Array of several parameters
 312          *
 313          * @return boolean|object
 314          * @throws \Exception
 315          */
 316         public static function selectThreadForUser($uid, array $selected = [], array $condition = [], $params = [])
 317         {
 318                 return self::selectViewForUser('post-thread-view', $uid, $selected, $condition, $params);
 319         }
 320
 321         /**
 322          * Retrieve a single record from the post view for a given user and returns it in an associative array
 323          *
 324          * @param integer $uid User ID
 325          * @param array   $selected
 326          * @param array   $condition
 327          * @param array   $params
 328          * @return bool|array
 329          * @throws \Exception
 330          * @see   DBA::select
 331          */
 332         public static function selectFirstForUser($uid, array $selected = [], array $condition = [], $params = [])
 333         {
 334                 $params['limit'] = 1;
 335
 336                 $result = self::selectForUser($uid, $selected, $condition, $params);
 337
 338                 if (is_bool($result)) {
 339                         return $result;
 340                 } else {
 341                         $row = self::fetch($result);
 342                         DBA::close($result);
 343                         return $row;
 344                 }
 345         }
 346
 347         /**
 348          * Select pinned rows from the item table for a given user
 349          *
 350          * @param integer $uid       User ID
 351          * @param array   $selected  Array of selected fields, empty for all
 352          * @param array   $condition Array of fields for condition
 353          * @param array   $params    Array of several parameters
 354          *
 355          * @return boolean|object
 356          * @throws \Exception
 357          */
 358         public static function selectPinned(int $uid, array $selected = [], array $condition = [], $params = [])
 359         {
 360                 $postthreaduser = DBA::select('post-thread-user', ['uri-id'], ['uid' => $uid, 'pinned' => true]);
 361                 if (!DBA::isResult($postthreaduser)) {
 362                         return $postthreaduser;
 363                 }
 364
 365                 $pinned = [];
 366                 while ($useritem = DBA::fetch($postthreaduser)) {
 367                         $pinned[] = $useritem['uri-id'];
 368                 }
 369                 DBA::close($postthreaduser);
 370
 371                 if (empty($pinned)) {
 372                         return [];
 373                 }
 374
 375                 $condition = DBA::mergeConditions(['uri-id' => $pinned, 'uid' => $uid, 'gravity' => GRAVITY_PARENT], $condition);
 376
 377                 return self::selectForUser($uid, $selected, $condition, $params);
 378         }
 379
 380         /**
 381          * Update existing post entries
 382          *
 383          * @param array $fields    The fields that are to be changed
 384          * @param array $condition The condition for finding the item entries
 385          *
 386          * A return value of "0" doesn't mean an error - but that 0 rows had been changed.
 387          *
 388          * @return integer|boolean number of affected rows - or "false" if there was an error
 389          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 390          */
 391         public static function update(array $fields, array $condition)
 392         {
 393                 $affected = 0;
 394
 395                 Logger::info('Start Update', ['fields' => $fields, 'condition' => $condition]);
 396
 397                 // Don't allow changes to fields that are responsible for the relation between the records
 398                 unset($fields['id']);
 399                 unset($fields['parent']);
 400                 unset($fields['uid']);
 401                 unset($fields['uri']);
 402                 unset($fields['uri-id']);
 403                 unset($fields['thr-parent']);
 404                 unset($fields['thr-parent-id']);
 405                 unset($fields['parent-uri']);
 406                 unset($fields['parent-uri-id']);
 407
 408                 $thread_condition = DBA::mergeConditions($condition, ['gravity' => GRAVITY_PARENT]);
 409
 410                 // To ensure the data integrity we do it in an transaction
 411                 DBA::transaction();
 412
 413                 $update_fields = DBStructure::getFieldsForTable('post-user', $fields);
 414                 if (!empty($update_fields)) {
 415                         $rows = DBA::selectToArray('post-view', ['post-user-id'], $condition);
 416                         $puids = array_column($rows, 'post-user-id');
 417                         if (!DBA::update('post-user', $update_fields, ['id' => $puids])) {
 418                                 DBA::rollback();
 419                                 Logger::notice('Updating post-user failed', ['fields' => $update_fields, 'condition' => $condition]);
 420                                 return false;
 421                         }
 422                         $affected = DBA::affectedRows();
 423                 }
 424
 425                 $update_fields = DBStructure::getFieldsForTable('post-content', $fields);
 426                 if (!empty($update_fields)) {
 427                         $rows = DBA::selectToArray('post-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
 428                         $uriids = array_column($rows, 'uri-id');
 429                         if (!DBA::update('post-content', $update_fields, ['uri-id' => $uriids])) {
 430                                 DBA::rollback();
 431                                 Logger::notice('Updating post-content failed', ['fields' => $update_fields, 'condition' => $condition]);
 432                                 return false;
 433                         }
 434                         $affected = max($affected, DBA::affectedRows());
 435                 }
 436
 437                 $update_fields = Post\DeliveryData::extractFields($fields);
 438                 if (!empty($update_fields)) {
 439                         if (empty($uriids)) {
 440                                 $rows = DBA::selectToArray('post-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
 441                                 $uriids = array_column($rows, 'uri-id');
 442                         }
 443                         if (!DBA::update('post-delivery-data', $update_fields, ['uri-id' => $uriids])) {
 444                                 DBA::rollback();
 445                                 Logger::notice('Updating post-delivery-data failed', ['fields' => $update_fields, 'condition' => $condition]);
 446                                 return false;
 447                         }
 448                         $affected = max($affected, DBA::affectedRows());
 449                 }
 450
 451                 $update_fields = DBStructure::getFieldsForTable('post-thread', $fields);
 452                 if (!empty($update_fields)) {
 453                         $rows = DBA::selectToArray('post-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
 454                         $uriids = array_column($rows, 'uri-id');
 455                         if (!DBA::update('post-thread', $update_fields, ['uri-id' => $uriids])) {
 456                                 DBA::rollback();
 457                                 Logger::notice('Updating post-thread failed', ['fields' => $update_fields, 'condition' => $condition]);
 458                                 return false;
 459                         }
 460                         $affected = max($affected, DBA::affectedRows());
 461                 }
 462
 463                 $update_fields = DBStructure::getFieldsForTable('post-thread-user', $fields);
 464                 if (!empty($update_fields)) {
 465                         $rows = DBA::selectToArray('post-view', ['post-user-id'], $thread_condition);
 466                         $thread_puids = array_column($rows, 'post-user-id');
 467
 468                         $post_thread_condition = DBA::collapseCondition(['id' => $thread_puids]);
 469
 470                         $post_thread_condition[0] = "EXISTS(SELECT `id` FROM `post-user` WHERE " .
 471                                 $post_thread_condition[0] . " AND `uri-id` = `post-thread-user`.`uri-id` AND `uid` = `post-thread-user`.`uid`)";
 472                                 if (!DBA::update('post-thread-user', $update_fields, $post_thread_condition)) {
 473                                 DBA::rollback();
 474                                 Logger::notice('Updating post-thread-user failed', ['fields' => $update_fields, 'condition' => $condition]);
 475                                 return false;
 476                         }
 477                         $affected = max($affected, DBA::affectedRows());
 478                 }
 479
 480                 $update_fields = DBStructure::getFieldsForTable('thread', $fields);
 481                 if (!empty($update_fields)) {
 482                         $rows = DBA::selectToArray('post-view', ['id'], $thread_condition);
 483                         $ids = array_column($rows, 'id');
 484                         if (!DBA::update('thread', $update_fields, ['iid' => $ids])) {
 485                                 DBA::rollback();
 486                                 Logger::notice('Updating thread failed', ['fields' => $update_fields, 'condition' => $thread_condition]);
 487                                 return false;
 488                         }
 489                         $affected = max($affected, DBA::affectedRows());
 490                 }
 491
 492                 $update_fields = [];
 493                 foreach (Item::USED_FIELDLIST as $field) {
 494                         if (array_key_exists($field, $fields)) {
 495                                 $update_fields[$field] = $fields[$field];
 496                         }
 497                 }
 498                 if (!empty($update_fields)) {
 499                         $rows = DBA::selectToArray('post-view', ['id'], $condition, []);
 500                         $ids = array_column($rows, 'id');
 501                         if (!DBA::update('item', $update_fields, ['id' => $ids])) {
 502                                 DBA::rollback();
 503                                 Logger::notice('Updating item failed', ['fields' => $update_fields, 'condition' => $condition]);
 504                                 return false;
 505                         }
 506                         $affected = max($affected, DBA::affectedRows());
 507                 }
 508
 509                 DBA::commit();
 510
 511                 Logger::info('Updated posts', ['rows' => $affected]);
 512                 return $affected;
 513         }
 514 }