src/Model/Group.php

   1 <?php
   2 /**
   3  * @file src/Model/Group.php
   4  */
   5 namespace Friendica\Model;
   6
   7 use Friendica\BaseModule;
   8 use Friendica\BaseObject;
   9 use Friendica\Core\L10n;
  10 use Friendica\Core\Logger;
  11 use Friendica\Core\Renderer;
  12 use Friendica\Database\DBA;
  13 use Friendica\Util\Security;
  14
  15 require_once 'boot.php';
  16 require_once 'include/dba.php';
  17 require_once 'include/text.php';
  18
  19 /**
  20  * @brief functions for interacting with the group database table
  21  */
  22 class Group extends BaseObject
  23 {
  24         /**
  25          * @brief Create a new contact group
  26          *
  27          * Note: If we found a deleted group with the same name, we restore it
  28          *
  29          * @param int $uid
  30          * @param string $name
  31          * @return boolean
  32          */
  33         public static function create($uid, $name)
  34         {
  35                 $return = false;
  36                 if (!empty($uid) && !empty($name)) {
  37                         $gid = self::getIdByName($uid, $name); // check for dupes
  38                         if ($gid !== false) {
  39                                 // This could be a problem.
  40                                 // Let's assume we've just created a group which we once deleted
  41                                 // all the old members are gone, but the group remains so we don't break any security
  42                                 // access lists. What we're doing here is reviving the dead group, but old content which
  43                                 // was restricted to this group may now be seen by the new group members.
  44                                 $group = DBA::selectFirst('group', ['deleted'], ['id' => $gid]);
  45                                 if (DBA::isResult($group) && $group['deleted']) {
  46                                         DBA::update('group', ['deleted' => 0], ['id' => $gid]);
  47                                         notice(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.') . EOL);
  48                                 }
  49                                 return true;
  50                         }
  51
  52                         $return = DBA::insert('group', ['uid' => $uid, 'name' => $name]);
  53                         if ($return) {
  54                                 $return = DBA::lastInsertId();
  55                         }
  56                 }
  57                 return $return;
  58         }
  59
  60         /**
  61          * Update group information.
  62          *
  63          * @param  int    $id   Group ID
  64          * @param  string $name Group name
  65          *
  66          * @return bool Was the update successful?
  67          */
  68         public static function update($id, $name)
  69         {
  70                 return DBA::update('group', ['name' => $name], ['id' => $id]);
  71         }
  72
  73         /**
  74          * @brief Get a list of group ids a contact belongs to
  75          *
  76          * @param int $cid
  77          * @return array
  78          */
  79         public static function getIdsByContactId($cid)
  80         {
  81                 $condition = ['contact-id' => $cid];
  82                 $stmt = DBA::select('group_member', ['gid'], $condition);
  83
  84                 $return = [];
  85
  86                 while ($group = DBA::fetch($stmt)) {
  87                         $return[] = $group['gid'];
  88                 }
  89
  90                 return $return;
  91         }
  92
  93         /**
  94          * @brief count unread group items
  95          *
  96          * Count unread items of each groups of the local user
  97          *
  98          * @return array
  99          *      'id' => group id
 100          *      'name' => group name
 101          *      'count' => counted unseen group items
 102          */
 103         public static function countUnseen()
 104         {
 105                 $stmt = DBA::p("SELECT `group`.`id`, `group`.`name`,
 106                                 (SELECT COUNT(*) FROM `item` FORCE INDEX (`uid_unseen_contactid`)
 107                                         WHERE `uid` = ?
 108                                         AND `unseen`
 109                                         AND `contact-id` IN
 110                                                 (SELECT `contact-id`
 111                                                 FROM `group_member`
 112                                                 WHERE `group_member`.`gid` = `group`.`id`)
 113                                         ) AS `count`
 114                                 FROM `group`
 115                                 WHERE `group`.`uid` = ?;",
 116                         local_user(),
 117                         local_user()
 118                 );
 119
 120                 return DBA::toArray($stmt);
 121         }
 122
 123         /**
 124          * @brief Get the group id for a user/name couple
 125          *
 126          * Returns false if no group has been found.
 127          *
 128          * @param int $uid
 129          * @param string $name
 130          * @return int|boolean
 131          */
 132         public static function getIdByName($uid, $name)
 133         {
 134                 if (!$uid || !strlen($name)) {
 135                         return false;
 136                 }
 137
 138                 $group = DBA::selectFirst('group', ['id'], ['uid' => $uid, 'name' => $name]);
 139                 if (DBA::isResult($group)) {
 140                         return $group['id'];
 141                 }
 142
 143                 return false;
 144         }
 145
 146         /**
 147          * @brief Mark a group as deleted
 148          *
 149          * @param int $gid
 150          * @return boolean
 151          */
 152         public static function remove($gid) {
 153                 if (! $gid) {
 154                         return false;
 155                 }
 156
 157                 $group = DBA::selectFirst('group', ['uid'], ['id' => $gid]);
 158                 if (!DBA::isResult($group)) {
 159                         return false;
 160                 }
 161
 162                 // remove group from default posting lists
 163                 $user = DBA::selectFirst('user', ['def_gid', 'allow_gid', 'deny_gid'], ['uid' => $group['uid']]);
 164                 if (DBA::isResult($user)) {
 165                         $change = false;
 166
 167                         if ($user['def_gid'] == $gid) {
 168                                 $user['def_gid'] = 0;
 169                                 $change = true;
 170                         }
 171                         if (strpos($user['allow_gid'], '<' . $gid . '>') !== false) {
 172                                 $user['allow_gid'] = str_replace('<' . $gid . '>', '', $user['allow_gid']);
 173                                 $change = true;
 174                         }
 175                         if (strpos($user['deny_gid'], '<' . $gid . '>') !== false) {
 176                                 $user['deny_gid'] = str_replace('<' . $gid . '>', '', $user['deny_gid']);
 177                                 $change = true;
 178                         }
 179
 180                         if ($change) {
 181                                 DBA::update('user', $user, ['uid' => $group['uid']]);
 182                         }
 183                 }
 184
 185                 // remove all members
 186                 DBA::delete('group_member', ['gid' => $gid]);
 187
 188                 // remove group
 189                 $return = DBA::update('group', ['deleted' => 1], ['id' => $gid]);
 190
 191                 return $return;
 192         }
 193
 194         /**
 195          * @brief Mark a group as deleted based on its name
 196          *
 197          * @deprecated Use Group::remove instead
 198          *
 199          * @param int $uid
 200          * @param string $name
 201          * @return bool
 202          */
 203         public static function removeByName($uid, $name) {
 204                 $return = false;
 205                 if (!empty($uid) && !empty($name)) {
 206                         $gid = self::getIdByName($uid, $name);
 207
 208                         $return = self::remove($gid);
 209                 }
 210
 211                 return $return;
 212         }
 213
 214         /**
 215          * @brief Adds a contact to a group
 216          *
 217          * @param int $gid
 218          * @param int $cid
 219          * @return boolean
 220          */
 221         public static function addMember($gid, $cid)
 222         {
 223                 if (!$gid || !$cid) {
 224                         return false;
 225                 }
 226
 227                 $row_exists = DBA::exists('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 228                 if ($row_exists) {
 229                         // Row already existing, nothing to do
 230                         $return = true;
 231                 } else {
 232                         $return = DBA::insert('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 233                 }
 234
 235                 return $return;
 236         }
 237
 238         /**
 239          * @brief Removes a contact from a group
 240          *
 241          * @param int $gid
 242          * @param int $cid
 243          * @return boolean
 244          */
 245         public static function removeMember($gid, $cid)
 246         {
 247                 if (!$gid || !$cid) {
 248                         return false;
 249                 }
 250
 251                 $return = DBA::delete('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 252
 253                 return $return;
 254         }
 255
 256         /**
 257          * @brief Removes a contact from a group based on its name
 258          *
 259          * @deprecated Use Group::removeMember instead
 260          *
 261          * @param int $uid
 262          * @param string $name
 263          * @param int $cid
 264          * @return boolean
 265          */
 266         public static function removeMemberByName($uid, $name, $cid)
 267         {
 268                 $gid = self::getIdByName($uid, $name);
 269
 270                 $return = self::removeMember($gid, $cid);
 271
 272                 return $return;
 273         }
 274
 275         /**
 276          * @brief Returns the combined list of contact ids from a group id list
 277          *
 278          * @param array $group_ids
 279          * @param boolean $check_dead
 280          * @return array
 281          */
 282         public static function expand($group_ids, $check_dead = false)
 283         {
 284                 if (!is_array($group_ids) || !count($group_ids)) {
 285                         return [];
 286                 }
 287
 288                 $stmt = DBA::select('group_member', ['contact-id'], ['gid' => $group_ids]);
 289
 290                 $return = [];
 291                 while($group_member = DBA::fetch($stmt)) {
 292                         $return[] = $group_member['contact-id'];
 293                 }
 294
 295                 if ($check_dead) {
 296                         Contact::pruneUnavailable($return);
 297                 }
 298
 299                 return $return;
 300         }
 301
 302         /**
 303          * @brief Returns a templated group selection list
 304          *
 305          * @param int $uid
 306          * @param int $gid An optional pre-selected group
 307          * @param string $label An optional label of the list
 308          * @return string
 309          */
 310         public static function displayGroupSelection($uid, $gid = 0, $label = '')
 311         {
 312                 $o = '';
 313
 314                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => $uid], ['order' => ['name']]);
 315
 316                 $display_groups = [
 317                         [
 318                                 'name' => '',
 319                                 'id' => '0',
 320                                 'selected' => ''
 321                         ]
 322                 ];
 323                 while ($group = DBA::fetch($stmt)) {
 324                         $display_groups[] = [
 325                                 'name' => $group['name'],
 326                                 'id' => $group['id'],
 327                                 'selected' => $gid == $group['id'] ? 'true' : ''
 328                         ];
 329                 }
 330                 Logger::log('groups: ' . print_r($display_groups, true));
 331
 332                 if ($label == '') {
 333                         $label = L10n::t('Default privacy group for new contacts');
 334                 }
 335
 336                 $o = Renderer::replaceMacros(Renderer::getMarkupTemplate('group_selection.tpl'), [
 337                         '$label' => $label,
 338                         '$groups' => $display_groups
 339                 ]);
 340                 return $o;
 341         }
 342
 343         /**
 344          * @brief Create group sidebar widget
 345          *
 346          * @param string $every
 347          * @param string $each
 348          * @param string $editmode
 349          *      'standard' => include link 'Edit groups'
 350          *      'extended' => include link 'Create new group'
 351          *      'full' => include link 'Create new group' and provide for each group a link to edit this group
 352          * @param int $group_id
 353          * @param int $cid
 354          * @return string
 355          */
 356         public static function sidebarWidget($every = 'contact', $each = 'group', $editmode = 'standard', $group_id = '', $cid = 0)
 357         {
 358                 $o = '';
 359
 360                 if (!local_user()) {
 361                         return '';
 362                 }
 363
 364                 $display_groups = [
 365                         [
 366                                 'text' => L10n::t('Everybody'),
 367                                 'id' => 0,
 368                                 'selected' => (($group_id === 'everyone') ? 'group-selected' : ''),
 369                                 'href' => $every,
 370                         ]
 371                 ];
 372
 373                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => local_user()], ['order' => ['name']]);
 374
 375                 $member_of = [];
 376                 if ($cid) {
 377                         $member_of = self::getIdsByContactId($cid);
 378                 }
 379
 380                 while ($group = DBA::fetch($stmt)) {
 381                         $selected = (($group_id == $group['id']) ? ' group-selected' : '');
 382
 383                         if ($editmode == 'full') {
 384                                 $groupedit = [
 385                                         'href' => 'group/' . $group['id'],
 386                                         'title' => L10n::t('edit'),
 387                                 ];
 388                         } else {
 389                                 $groupedit = null;
 390                         }
 391
 392                         $display_groups[] = [
 393                                 'id'   => $group['id'],
 394                                 'cid'  => $cid,
 395                                 'text' => $group['name'],
 396                                 'href' => $each . '/' . $group['id'],
 397                                 'edit' => $groupedit,
 398                                 'selected' => $selected,
 399                                 'ismember' => in_array($group['id'], $member_of),
 400                         ];
 401                 }
 402
 403                 // Don't show the groups on the network page when there is only one
 404                 if ((count($display_groups) <= 2) && ($each == 'network')) {
 405                         return '';
 406                 }
 407
 408                 $tpl = Renderer::getMarkupTemplate('group_side.tpl');
 409                 $o = Renderer::replaceMacros($tpl, [
 410                         '$add' => L10n::t('add'),
 411                         '$title' => L10n::t('Groups'),
 412                         '$groups' => $display_groups,
 413                         'newgroup' => $editmode == 'extended' || $editmode == 'full' ? 1 : '',
 414                         'grouppage' => 'group/',
 415                         '$edittext' => L10n::t('Edit group'),
 416                         '$ungrouped' => $every === 'contact' ? L10n::t('Contacts not in any group') : '',
 417                         '$ungrouped_selected' => (($group_id === 'none') ? 'group-selected' : ''),
 418                         '$createtext' => L10n::t('Create a new group'),
 419                         '$creategroup' => L10n::t('Group Name: '),
 420                         '$editgroupstext' => L10n::t('Edit groups'),
 421                         '$form_security_token' => BaseModule::getFormSecurityToken('group_edit'),
 422                 ]);
 423
 424
 425                 return $o;
 426         }
 427 }