src/Model/Group.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;
  23
  24 use Friendica\BaseModule;
  25 use Friendica\Core\Logger;
  26 use Friendica\Core\Protocol;
  27 use Friendica\Core\Renderer;
  28 use Friendica\Database\DBA;
  29 use Friendica\DI;
  30
  31 /**
  32  * functions for interacting with the group database table
  33  */
  34 class Group
  35 {
  36         const FOLLOWERS = '~';
  37         const MUTUALS = '&';
  38
  39         public static function getByUserId($uid, $includesDeleted = false)
  40         {
  41                 $conditions = ['uid' => $uid];
  42
  43                 if (!$includesDeleted) {
  44                         $conditions['deleted'] = false;
  45                 }
  46
  47                 return DBA::selectToArray('group', [], $conditions);
  48         }
  49
  50         /**
  51          * @param int $group_id
  52          * @return bool
  53          * @throws \Exception
  54          */
  55         public static function exists($group_id, $uid = null)
  56         {
  57                 $condition = ['id' => $group_id, 'deleted' => false];
  58
  59                 if (isset($uid)) {
  60                         $condition = [
  61                                 'uid' => $uid
  62                         ];
  63                 }
  64
  65                 return DBA::exists('group', $condition);
  66         }
  67
  68         /**
  69          * Create a new contact group
  70          *
  71          * Note: If we found a deleted group with the same name, we restore it
  72          *
  73          * @param int    $uid
  74          * @param string $name
  75          * @return boolean
  76          * @throws \Exception
  77          */
  78         public static function create($uid, $name)
  79         {
  80                 $return = false;
  81                 if (!empty($uid) && !empty($name)) {
  82                         $gid = self::getIdByName($uid, $name); // check for dupes
  83                         if ($gid !== false) {
  84                                 // This could be a problem.
  85                                 // Let's assume we've just created a group which we once deleted
  86                                 // all the old members are gone, but the group remains so we don't break any security
  87                                 // access lists. What we're doing here is reviving the dead group, but old content which
  88                                 // was restricted to this group may now be seen by the new group members.
  89                                 $group = DBA::selectFirst('group', ['deleted'], ['id' => $gid]);
  90                                 if (DBA::isResult($group) && $group['deleted']) {
  91                                         DBA::update('group', ['deleted' => 0], ['id' => $gid]);
  92                                         notice(DI::l10n()->t('A deleted group with this name was revived. Existing item permissions <strong>may</strong> apply to this group and any future members. If this is not what you intended, please create another group with a different name.'));
  93                                 }
  94                                 return true;
  95                         }
  96
  97                         $return = DBA::insert('group', ['uid' => $uid, 'name' => $name]);
  98                         if ($return) {
  99                                 $return = DBA::lastInsertId();
 100                         }
 101                 }
 102                 return $return;
 103         }
 104
 105         /**
 106          * Update group information.
 107          *
 108          * @param int    $id   Group ID
 109          * @param string $name Group name
 110          *
 111          * @return bool Was the update successful?
 112          * @throws \Exception
 113          */
 114         public static function update($id, $name)
 115         {
 116                 return DBA::update('group', ['name' => $name], ['id' => $id]);
 117         }
 118
 119         /**
 120          * Get a list of group ids a contact belongs to
 121          *
 122          * @param int $cid
 123          * @return array
 124          * @throws \Exception
 125          */
 126         public static function getIdsByContactId($cid)
 127         {
 128                 $return = [];
 129
 130                 $stmt = DBA::select('group_member', ['gid'], ['contact-id' => $cid]);
 131                 while ($group = DBA::fetch($stmt)) {
 132                         $return[] = $group['gid'];
 133                 }
 134                 DBA::close($stmt);
 135
 136                 // Meta-groups
 137                 $contact = Contact::getById($cid, ['rel']);
 138                 if ($contact['rel'] == Contact::FOLLOWER || $contact['rel'] == Contact::FRIEND) {
 139                         $return[] = self::FOLLOWERS;
 140                 }
 141
 142                 if ($contact['rel'] == Contact::FRIEND) {
 143                         $return[] = self::MUTUALS;
 144                 }
 145
 146                 return $return;
 147         }
 148
 149         /**
 150          * count unread group items
 151          *
 152          * Count unread items of each groups of the local user
 153          *
 154          * @return array
 155          *    'id' => group id
 156          *    'name' => group name
 157          *    'count' => counted unseen group items
 158          * @throws \Exception
 159          */
 160         public static function countUnseen()
 161         {
 162                 $stmt = DBA::p("SELECT `group`.`id`, `group`.`name`,
 163                                 (SELECT COUNT(*) FROM `post-user`
 164                                         WHERE `uid` = ?
 165                                         AND `unseen`
 166                                         AND `contact-id` IN
 167                                                 (SELECT `contact-id`
 168                                                 FROM `group_member`
 169                                                 WHERE `group_member`.`gid` = `group`.`id`)
 170                                         ) AS `count`
 171                                 FROM `group`
 172                                 WHERE `group`.`uid` = ?;",
 173                         local_user(),
 174                         local_user()
 175                 );
 176
 177                 return DBA::toArray($stmt);
 178         }
 179
 180         /**
 181          * Get the group id for a user/name couple
 182          *
 183          * Returns false if no group has been found.
 184          *
 185          * @param int    $uid
 186          * @param string $name
 187          * @return int|boolean
 188          * @throws \Exception
 189          */
 190         public static function getIdByName($uid, $name)
 191         {
 192                 if (!$uid || !strlen($name)) {
 193                         return false;
 194                 }
 195
 196                 $group = DBA::selectFirst('group', ['id'], ['uid' => $uid, 'name' => $name]);
 197                 if (DBA::isResult($group)) {
 198                         return $group['id'];
 199                 }
 200
 201                 return false;
 202         }
 203
 204         /**
 205          * Mark a group as deleted
 206          *
 207          * @param int $gid
 208          * @return boolean
 209          * @throws \Exception
 210          */
 211         public static function remove($gid)
 212         {
 213                 if (!$gid) {
 214                         return false;
 215                 }
 216
 217                 $group = DBA::selectFirst('group', ['uid'], ['id' => $gid]);
 218                 if (!DBA::isResult($group)) {
 219                         return false;
 220                 }
 221
 222                 // remove group from default posting lists
 223                 $user = DBA::selectFirst('user', ['def_gid', 'allow_gid', 'deny_gid'], ['uid' => $group['uid']]);
 224                 if (DBA::isResult($user)) {
 225                         $change = false;
 226
 227                         if ($user['def_gid'] == $gid) {
 228                                 $user['def_gid'] = 0;
 229                                 $change = true;
 230                         }
 231                         if (strpos($user['allow_gid'], '<' . $gid . '>') !== false) {
 232                                 $user['allow_gid'] = str_replace('<' . $gid . '>', '', $user['allow_gid']);
 233                                 $change = true;
 234                         }
 235                         if (strpos($user['deny_gid'], '<' . $gid . '>') !== false) {
 236                                 $user['deny_gid'] = str_replace('<' . $gid . '>', '', $user['deny_gid']);
 237                                 $change = true;
 238                         }
 239
 240                         if ($change) {
 241                                 DBA::update('user', $user, ['uid' => $group['uid']]);
 242                         }
 243                 }
 244
 245                 // remove all members
 246                 DBA::delete('group_member', ['gid' => $gid]);
 247
 248                 // remove group
 249                 $return = DBA::update('group', ['deleted' => 1], ['id' => $gid]);
 250
 251                 return $return;
 252         }
 253
 254         /**
 255          * Adds a contact to a group
 256          *
 257          * @param int $gid
 258          * @param int $cid
 259          * @return boolean
 260          * @throws \Exception
 261          */
 262         public static function addMember($gid, $cid)
 263         {
 264                 if (!$gid || !$cid) {
 265                         return false;
 266                 }
 267
 268                 $row_exists = DBA::exists('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 269                 if ($row_exists) {
 270                         // Row already existing, nothing to do
 271                         $return = true;
 272                 } else {
 273                         $return = DBA::insert('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 274                 }
 275
 276                 return $return;
 277         }
 278
 279         /**
 280          * Removes a contact from a group
 281          *
 282          * @param int $gid
 283          * @param int $cid
 284          * @return boolean
 285          * @throws \Exception
 286          */
 287         public static function removeMember($gid, $cid)
 288         {
 289                 if (!$gid || !$cid) {
 290                         return false;
 291                 }
 292
 293                 $return = DBA::delete('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 294
 295                 return $return;
 296         }
 297
 298         /**
 299          * Returns the combined list of contact ids from a group id list
 300          *
 301          * @param int     $uid
 302          * @param array   $group_ids
 303          * @param boolean $check_dead
 304          * @return array
 305          * @throws \Exception
 306          */
 307         public static function expand($uid, array $group_ids, $check_dead = false)
 308         {
 309                 if (!is_array($group_ids) || !count($group_ids)) {
 310                         return [];
 311                 }
 312
 313                 $return = [];
 314                 $pubmail = false;
 315                 $networks = Protocol::SUPPORT_PRIVATE;
 316
 317                 $mailacct = DBA::selectFirst('mailacct', ['pubmail'], ['`uid` = ? AND `server` != ""', $uid]);
 318                 if (DBA::isResult($mailacct)) {
 319                         $pubmail = $mailacct['pubmail'];
 320                 }
 321
 322                 if (!$pubmail) {
 323                         $networks = array_diff($networks, [Protocol::MAIL]);
 324                 }
 325
 326                 $key = array_search(self::FOLLOWERS, $group_ids);
 327                 if ($key !== false) {
 328                         $followers = Contact::selectToArray(['id'], [
 329                                 'uid' => $uid,
 330                                 'rel' => [Contact::FOLLOWER, Contact::FRIEND],
 331                                 'network' => $networks,
 332                                 'contact-type' => [Contact::TYPE_UNKNOWN, Contact::TYPE_PERSON],
 333                                 'archive' => false,
 334                                 'pending' => false,
 335                                 'blocked' => false,
 336                         ]);
 337
 338                         foreach ($followers as $follower) {
 339                                 $return[] = $follower['id'];
 340                         }
 341
 342                         unset($group_ids[$key]);
 343                 }
 344
 345                 $key = array_search(self::MUTUALS, $group_ids);
 346                 if ($key !== false) {
 347                         $mutuals = Contact::selectToArray(['id'], [
 348                                 'uid' => $uid,
 349                                 'rel' => [Contact::FRIEND],
 350                                 'network' => $networks,
 351                                 'contact-type' => [Contact::TYPE_UNKNOWN, Contact::TYPE_PERSON],
 352                                 'archive' => false,
 353                                 'pending' => false,
 354                                 'blocked' => false,
 355                         ]);
 356
 357                         foreach ($mutuals as $mutual) {
 358                                 $return[] = $mutual['id'];
 359                         }
 360
 361                         unset($group_ids[$key]);
 362                 }
 363
 364                 $stmt = DBA::select('group_member', ['contact-id'], ['gid' => $group_ids]);
 365                 while ($group_member = DBA::fetch($stmt)) {
 366                         $return[] = $group_member['contact-id'];
 367                 }
 368                 DBA::close($stmt);
 369
 370                 if ($check_dead) {
 371                         $return = Contact::pruneUnavailable($return);
 372                 }
 373
 374                 return $return;
 375         }
 376
 377         /**
 378          * Returns a templated group selection list
 379          *
 380          * @param int    $uid
 381          * @param int    $gid   An optional pre-selected group
 382          * @param string $label An optional label of the list
 383          * @return string
 384          * @throws \Exception
 385          */
 386         public static function displayGroupSelection($uid, $gid = 0, $label = '')
 387         {
 388                 $display_groups = [
 389                         [
 390                                 'name' => '',
 391                                 'id' => '0',
 392                                 'selected' => ''
 393                         ]
 394                 ];
 395
 396                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => $uid], ['order' => ['name']]);
 397                 while ($group = DBA::fetch($stmt)) {
 398                         $display_groups[] = [
 399                                 'name' => $group['name'],
 400                                 'id' => $group['id'],
 401                                 'selected' => $gid == $group['id'] ? 'true' : ''
 402                         ];
 403                 }
 404                 DBA::close($stmt);
 405
 406                 Logger::info('Got groups', $display_groups);
 407
 408                 if ($label == '') {
 409                         $label = DI::l10n()->t('Default privacy group for new contacts');
 410                 }
 411
 412                 $o = Renderer::replaceMacros(Renderer::getMarkupTemplate('group_selection.tpl'), [
 413                         '$label' => $label,
 414                         '$groups' => $display_groups
 415                 ]);
 416                 return $o;
 417         }
 418
 419         /**
 420          * Create group sidebar widget
 421          *
 422          * @param string $every
 423          * @param string $each
 424          * @param string $editmode
 425          *    'standard' => include link 'Edit groups'
 426          *    'extended' => include link 'Create new group'
 427          *    'full' => include link 'Create new group' and provide for each group a link to edit this group
 428          * @param string $group_id
 429          * @param int    $cid
 430          * @return string
 431          * @throws \Exception
 432          */
 433         public static function sidebarWidget($every = 'contact', $each = 'group', $editmode = 'standard', $group_id = '', $cid = 0)
 434         {
 435                 if (!local_user()) {
 436                         return '';
 437                 }
 438
 439                 $display_groups = [
 440                         [
 441                                 'text' => DI::l10n()->t('Everybody'),
 442                                 'id' => 0,
 443                                 'selected' => (($group_id === 'everyone') ? 'group-selected' : ''),
 444                                 'href' => $every,
 445                         ]
 446                 ];
 447
 448                 $member_of = [];
 449                 if ($cid) {
 450                         $member_of = self::getIdsByContactId($cid);
 451                 }
 452
 453                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => local_user()], ['order' => ['name']]);
 454                 while ($group = DBA::fetch($stmt)) {
 455                         $selected = (($group_id == $group['id']) ? ' group-selected' : '');
 456
 457                         if ($editmode == 'full') {
 458                                 $groupedit = [
 459                                         'href' => 'group/' . $group['id'],
 460                                         'title' => DI::l10n()->t('edit'),
 461                                 ];
 462                         } else {
 463                                 $groupedit = null;
 464                         }
 465
 466                         if ($each == 'group') {
 467                                 $count = DBA::count('group_member', ['gid' => $group['id']]);
 468                                 $group_name = sprintf('%s (%d)', $group['name'], $count);
 469                         } else {
 470                                 $group_name = $group['name'];
 471                         }
 472
 473                         $display_groups[] = [
 474                                 'id'   => $group['id'],
 475                                 'cid'  => $cid,
 476                                 'text' => $group_name,
 477                                 'href' => $each . '/' . $group['id'],
 478                                 'edit' => $groupedit,
 479                                 'selected' => $selected,
 480                                 'ismember' => in_array($group['id'], $member_of),
 481                         ];
 482                 }
 483                 DBA::close($stmt);
 484
 485                 // Don't show the groups on the network page when there is only one
 486                 if ((count($display_groups) <= 2) && ($each == 'network')) {
 487                         return '';
 488                 }
 489
 490                 $tpl = Renderer::getMarkupTemplate('group_side.tpl');
 491                 $o = Renderer::replaceMacros($tpl, [
 492                         '$add' => DI::l10n()->t('add'),
 493                         '$title' => DI::l10n()->t('Groups'),
 494                         '$groups' => $display_groups,
 495                         'newgroup' => $editmode == 'extended' || $editmode == 'full' ? 1 : '',
 496                         'grouppage' => 'group/',
 497                         '$edittext' => DI::l10n()->t('Edit group'),
 498                         '$ungrouped' => $every === 'contact' ? DI::l10n()->t('Contacts not in any group') : '',
 499                         '$ungrouped_selected' => (($group_id === 'none') ? 'group-selected' : ''),
 500                         '$createtext' => DI::l10n()->t('Create a new group'),
 501                         '$creategroup' => DI::l10n()->t('Group Name: '),
 502                         '$editgroupstext' => DI::l10n()->t('Edit groups'),
 503                         '$form_security_token' => BaseModule::getFormSecurityToken('group_edit'),
 504                 ]);
 505
 506                 return $o;
 507         }
 508 }