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
  14 /**
  15  * @brief functions for interacting with the group database table
  16  */
  17 class Group extends BaseObject
  18 {
  19         /**
  20          * @brief Create a new contact group
  21          *
  22          * Note: If we found a deleted group with the same name, we restore it
  23          *
  24          * @param int    $uid
  25          * @param string $name
  26          * @return boolean
  27          * @throws \Exception
  28          */
  29         public static function create($uid, $name)
  30         {
  31                 $return = false;
  32                 if (!empty($uid) && !empty($name)) {
  33                         $gid = self::getIdByName($uid, $name); // check for dupes
  34                         if ($gid !== false) {
  35                                 // This could be a problem.
  36                                 // Let's assume we've just created a group which we once deleted
  37                                 // all the old members are gone, but the group remains so we don't break any security
  38                                 // access lists. What we're doing here is reviving the dead group, but old content which
  39                                 // was restricted to this group may now be seen by the new group members.
  40                                 $group = DBA::selectFirst('group', ['deleted'], ['id' => $gid]);
  41                                 if (DBA::isResult($group) && $group['deleted']) {
  42                                         DBA::update('group', ['deleted' => 0], ['id' => $gid]);
  43                                         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);
  44                                 }
  45                                 return true;
  46                         }
  47
  48                         $return = DBA::insert('group', ['uid' => $uid, 'name' => $name]);
  49                         if ($return) {
  50                                 $return = DBA::lastInsertId();
  51                         }
  52                 }
  53                 return $return;
  54         }
  55
  56         /**
  57          * Update group information.
  58          *
  59          * @param  int    $id   Group ID
  60          * @param  string $name Group name
  61          *
  62          * @return bool Was the update successful?
  63          * @throws \Exception
  64          */
  65         public static function update($id, $name)
  66         {
  67                 return DBA::update('group', ['name' => $name], ['id' => $id]);
  68         }
  69
  70         /**
  71          * @brief Get a list of group ids a contact belongs to
  72          *
  73          * @param int $cid
  74          * @return array
  75          * @throws \Exception
  76          */
  77         public static function getIdsByContactId($cid)
  78         {
  79                 $condition = ['contact-id' => $cid];
  80                 $stmt = DBA::select('group_member', ['gid'], $condition);
  81
  82                 $return = [];
  83
  84                 while ($group = DBA::fetch($stmt)) {
  85                         $return[] = $group['gid'];
  86                 }
  87
  88                 return $return;
  89         }
  90
  91         /**
  92          * @brief count unread group items
  93          *
  94          * Count unread items of each groups of the local user
  95          *
  96          * @return array
  97          *    'id' => group id
  98          *    'name' => group name
  99          *    'count' => counted unseen group items
 100          * @throws \Exception
 101          */
 102         public static function countUnseen()
 103         {
 104                 $stmt = DBA::p("SELECT `group`.`id`, `group`.`name`,
 105                                 (SELECT COUNT(*) FROM `item` FORCE INDEX (`uid_unseen_contactid`)
 106                                         WHERE `uid` = ?
 107                                         AND `unseen`
 108                                         AND `contact-id` IN
 109                                                 (SELECT `contact-id`
 110                                                 FROM `group_member`
 111                                                 WHERE `group_member`.`gid` = `group`.`id`)
 112                                         ) AS `count`
 113                                 FROM `group`
 114                                 WHERE `group`.`uid` = ?;",
 115                         local_user(),
 116                         local_user()
 117                 );
 118
 119                 return DBA::toArray($stmt);
 120         }
 121
 122         /**
 123          * @brief Get the group id for a user/name couple
 124          *
 125          * Returns false if no group has been found.
 126          *
 127          * @param int    $uid
 128          * @param string $name
 129          * @return int|boolean
 130          * @throws \Exception
 131          */
 132         public static function getIdByName($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 $gid
 150          * @return boolean
 151          * @throws \Exception
 152          */
 153         public static function remove($gid) {
 154                 if (! $gid) {
 155                         return false;
 156                 }
 157
 158                 $group = DBA::selectFirst('group', ['uid'], ['id' => $gid]);
 159                 if (!DBA::isResult($group)) {
 160                         return false;
 161                 }
 162
 163                 // remove group from default posting lists
 164                 $user = DBA::selectFirst('user', ['def_gid', 'allow_gid', 'deny_gid'], ['uid' => $group['uid']]);
 165                 if (DBA::isResult($user)) {
 166                         $change = false;
 167
 168                         if ($user['def_gid'] == $gid) {
 169                                 $user['def_gid'] = 0;
 170                                 $change = true;
 171                         }
 172                         if (strpos($user['allow_gid'], '<' . $gid . '>') !== false) {
 173                                 $user['allow_gid'] = str_replace('<' . $gid . '>', '', $user['allow_gid']);
 174                                 $change = true;
 175                         }
 176                         if (strpos($user['deny_gid'], '<' . $gid . '>') !== false) {
 177                                 $user['deny_gid'] = str_replace('<' . $gid . '>', '', $user['deny_gid']);
 178                                 $change = true;
 179                         }
 180
 181                         if ($change) {
 182                                 DBA::update('user', $user, ['uid' => $group['uid']]);
 183                         }
 184                 }
 185
 186                 // remove all members
 187                 DBA::delete('group_member', ['gid' => $gid]);
 188
 189                 // remove group
 190                 $return = DBA::update('group', ['deleted' => 1], ['id' => $gid]);
 191
 192                 return $return;
 193         }
 194
 195         /**
 196          * @brief      Mark a group as deleted based on its name
 197          *
 198          * @deprecated Use Group::remove instead
 199          *
 200          * @param int    $uid
 201          * @param string $name
 202          * @return bool
 203          * @throws \Exception
 204          */
 205         public static function removeByName($uid, $name) {
 206                 $return = false;
 207                 if (!empty($uid) && !empty($name)) {
 208                         $gid = self::getIdByName($uid, $name);
 209
 210                         $return = self::remove($gid);
 211                 }
 212
 213                 return $return;
 214         }
 215
 216         /**
 217          * @brief Adds a contact to a group
 218          *
 219          * @param int $gid
 220          * @param int $cid
 221          * @return boolean
 222          * @throws \Exception
 223          */
 224         public static function addMember($gid, $cid)
 225         {
 226                 if (!$gid || !$cid) {
 227                         return false;
 228                 }
 229
 230                 $row_exists = DBA::exists('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 231                 if ($row_exists) {
 232                         // Row already existing, nothing to do
 233                         $return = true;
 234                 } else {
 235                         $return = DBA::insert('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 236                 }
 237
 238                 return $return;
 239         }
 240
 241         /**
 242          * @brief Removes a contact from a group
 243          *
 244          * @param int $gid
 245          * @param int $cid
 246          * @return boolean
 247          * @throws \Exception
 248          */
 249         public static function removeMember($gid, $cid)
 250         {
 251                 if (!$gid || !$cid) {
 252                         return false;
 253                 }
 254
 255                 $return = DBA::delete('group_member', ['gid' => $gid, 'contact-id' => $cid]);
 256
 257                 return $return;
 258         }
 259
 260         /**
 261          * @brief      Removes a contact from a group based on its name
 262          *
 263          * @deprecated Use Group::removeMember instead
 264          *
 265          * @param int    $uid
 266          * @param string $name
 267          * @param int    $cid
 268          * @return boolean
 269          * @throws \Exception
 270          */
 271         public static function removeMemberByName($uid, $name, $cid)
 272         {
 273                 $gid = self::getIdByName($uid, $name);
 274
 275                 $return = self::removeMember($gid, $cid);
 276
 277                 return $return;
 278         }
 279
 280         /**
 281          * @brief Returns the combined list of contact ids from a group id list
 282          *
 283          * @param array   $group_ids
 284          * @param boolean $check_dead
 285          * @return array
 286          * @throws \Exception
 287          */
 288         public static function expand($group_ids, $check_dead = false)
 289         {
 290                 if (!is_array($group_ids) || !count($group_ids)) {
 291                         return [];
 292                 }
 293
 294                 $stmt = DBA::select('group_member', ['contact-id'], ['gid' => $group_ids]);
 295
 296                 $return = [];
 297                 while($group_member = DBA::fetch($stmt)) {
 298                         $return[] = $group_member['contact-id'];
 299                 }
 300
 301                 if ($check_dead) {
 302                         Contact::pruneUnavailable($return);
 303                 }
 304
 305                 return $return;
 306         }
 307
 308         /**
 309          * @brief Returns a templated group selection list
 310          *
 311          * @param int    $uid
 312          * @param int    $gid   An optional pre-selected group
 313          * @param string $label An optional label of the list
 314          * @return string
 315          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 316          */
 317         public static function displayGroupSelection($uid, $gid = 0, $label = '')
 318         {
 319                 $o = '';
 320
 321                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => $uid], ['order' => ['name']]);
 322
 323                 $display_groups = [
 324                         [
 325                                 'name' => '',
 326                                 'id' => '0',
 327                                 'selected' => ''
 328                         ]
 329                 ];
 330                 while ($group = DBA::fetch($stmt)) {
 331                         $display_groups[] = [
 332                                 'name' => $group['name'],
 333                                 'id' => $group['id'],
 334                                 'selected' => $gid == $group['id'] ? 'true' : ''
 335                         ];
 336                 }
 337                 Logger::log('groups: ' . print_r($display_groups, true));
 338
 339                 if ($label == '') {
 340                         $label = L10n::t('Default privacy group for new contacts');
 341                 }
 342
 343                 $o = Renderer::replaceMacros(Renderer::getMarkupTemplate('group_selection.tpl'), [
 344                         '$label' => $label,
 345                         '$groups' => $display_groups
 346                 ]);
 347                 return $o;
 348         }
 349
 350         /**
 351          * @brief Create group sidebar widget
 352          *
 353          * @param string $every
 354          * @param string $each
 355          * @param string $editmode
 356          *    'standard' => include link 'Edit groups'
 357          *    'extended' => include link 'Create new group'
 358          *    'full' => include link 'Create new group' and provide for each group a link to edit this group
 359          * @param string $group_id
 360          * @param int    $cid
 361          * @return string
 362          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 363          */
 364         public static function sidebarWidget($every = 'contact', $each = 'group', $editmode = 'standard', $group_id = '', $cid = 0)
 365         {
 366                 if (!local_user()) {
 367                         return '';
 368                 }
 369
 370                 $display_groups = [
 371                         [
 372                                 'text' => L10n::t('Everybody'),
 373                                 'id' => 0,
 374                                 'selected' => (($group_id === 'everyone') ? 'group-selected' : ''),
 375                                 'href' => $every,
 376                         ]
 377                 ];
 378
 379                 $stmt = DBA::select('group', [], ['deleted' => 0, 'uid' => local_user()], ['order' => ['name']]);
 380
 381                 $member_of = [];
 382                 if ($cid) {
 383                         $member_of = self::getIdsByContactId($cid);
 384                 }
 385
 386                 while ($group = DBA::fetch($stmt)) {
 387                         $selected = (($group_id == $group['id']) ? ' group-selected' : '');
 388
 389                         if ($editmode == 'full') {
 390                                 $groupedit = [
 391                                         'href' => 'group/' . $group['id'],
 392                                         'title' => L10n::t('edit'),
 393                                 ];
 394                         } else {
 395                                 $groupedit = null;
 396                         }
 397
 398                         $display_groups[] = [
 399                                 'id'   => $group['id'],
 400                                 'cid'  => $cid,
 401                                 'text' => $group['name'],
 402                                 'href' => $each . '/' . $group['id'],
 403                                 'edit' => $groupedit,
 404                                 'selected' => $selected,
 405                                 'ismember' => in_array($group['id'], $member_of),
 406                         ];
 407                 }
 408
 409                 // Don't show the groups on the network page when there is only one
 410                 if ((count($display_groups) <= 2) && ($each == 'network')) {
 411                         return '';
 412                 }
 413
 414                 $tpl = Renderer::getMarkupTemplate('group_side.tpl');
 415                 $o = Renderer::replaceMacros($tpl, [
 416                         '$add' => L10n::t('add'),
 417                         '$title' => L10n::t('Groups'),
 418                         '$groups' => $display_groups,
 419                         'newgroup' => $editmode == 'extended' || $editmode == 'full' ? 1 : '',
 420                         'grouppage' => 'group/',
 421                         '$edittext' => L10n::t('Edit group'),
 422                         '$ungrouped' => $every === 'contact' ? L10n::t('Contacts not in any group') : '',
 423                         '$ungrouped_selected' => (($group_id === 'none') ? 'group-selected' : ''),
 424                         '$createtext' => L10n::t('Create a new group'),
 425                         '$creategroup' => L10n::t('Group Name: '),
 426                         '$editgroupstext' => L10n::t('Edit groups'),
 427                         '$form_security_token' => BaseModule::getFormSecurityToken('group_edit'),
 428                 ]);
 429
 430
 431                 return $o;
 432         }
 433 }