Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Model/Group.php
*/
namespace Friendica\Model;
use Friendica\BaseObject;
use Friendica\Database\DBM;
use dba;
require_once 'boot.php';
require_once 'include/text.php';
/**
* @brief functions for interacting with the group database table
*/
class Group extends BaseObject
{
/**
* @brief Create a new contact group
*
* Note: If we found a deleted group with the same name, we restore it
*
* @param int $uid
* @param string $name
* @return boolean
*/
public static function create($uid, $name)
{
$return = false;
if (x($uid) && x($name)) {
$gid = self::getIdByName($uid, $name); // check for dupes
if ($gid !== false) {
// This could be a problem.
// Let's assume we've just created a group which we once deleted
// all the old members are gone, but the group remains so we don't break any security
// access lists. What we're doing here is reviving the dead group, but old content which
// was restricted to this group may now be seen by the new group members.
$group = dba::select('group', ['deleted'], ['id' => $gid], ['limit' => 1]);
if (DBM::is_result($group) && $group['deleted']) {
dba::update('group', ['deleted' => 0], ['gid' => $gid]);
notice(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);
}
return true;
}
$return = dba::insert('group', ['uid' => $uid, 'name' => $name]);
}
return $return;
}
/**
* @brief Get a list of group ids a contact belongs to
*
* @todo Get rid of $uid, the contact id already bears the information
*
* @param int $uid
* @param int $cid
* @return array
*/
private static function getByContactIdForUserId($uid, $cid)
{
$stmt = dba::p('SELECT `id`
FROM `group`
INNER JOIN `group_member`
ON `group_member`.`gid` = `group`.`id`
WHERE `group`.`uid` = ?
AND `group_member`.`contact-id` = ?',
$uid,
$cid
);
$return = [];
if (DBM::is_result($stmt)) {
while($group = dba::fetch($stmt)) {
$return[] = $group['id'];
}
}
return $return;
}
/**
* @brief count unread group items
*
* Count unread items of each groups of the local user
*
* @return array
* 'id' => group id
* 'name' => group name
* 'count' => counted unseen group items
*/
public static function countUnseen()
{
$stmt = dba::p("SELECT `group`.`id`, `group`.`name`,
(SELECT COUNT(*) FROM `item` FORCE INDEX (`uid_unseen_contactid`)
WHERE `uid` = ?
AND `unseen`
AND `contact-id` IN
(SELECT `contact-id`
FROM `group_member`
WHERE `group_member`.`gid` = `group`.`id`
AND `group_member`.`uid` = ?)
) AS `count`
FROM `group`
WHERE `group`.`uid` = ?;",
local_user(),
local_user(),
local_user()
);
return dba::inArray($stmt);
}
/**
* @brief Get the group id for a user/name couple
*
* Returns false if no group has been found.
*
* @param int $uid
* @param string $name
* @return int|boolean
*/
public static function getIdByName($uid, $name)
{
if ((! $uid) || (! strlen($name))) {
return false;
}
$group = dba::select('group', ['id'], ['uid' => $uid, 'name' => $name], ['limit' => 1]);
if (DBM::is_result($group)) {
return $group['id'];
}
return false;
}
/**
* @brief Mark a group as deleted
*
* @param type $gid
* @return boolean
*/
public static function remove($gid) {
if (! $gid) {
return false;
}
// remove group from default posting lists
$user = dba::select('user', ['def_gid', 'allow_gid', 'deny_gid'], ['uid' => $uid], ['limit' => 1]);
if (DBM::is_result($user)) {
$change = false;
if ($user['def_gid'] == $gid) {
$user['def_gid'] = 0;
$change = true;
}
if (strpos($user['allow_gid'], '<' . $gid . '>') !== false) {
$user['allow_gid'] = str_replace('<' . $gid . '>', '', $user['allow_gid']);
$change = true;
}
if (strpos($user['deny_gid'], '<' . $gid . '>') !== false) {
$user['deny_gid'] = str_replace('<' . $gid . '>', '', $user['deny_gid']);
$change = true;
}
if ($change) {
dba::update('user', $user, ['uid' => $uid]);
}
}
// remove all members
dba::delete('group_member', ['gid' => $gid]);
// remove group
$return = dba::update('group', ['deleted' => 1], ['id' => $gid]);
return $return;
}
/**
* @brief Mark a group as deleted based on its name
*
* @deprecated Use Group::remove instead
*
* @param type $uid
* @param type $name
* @return type
*/
public static function removeByName($uid, $name) {
$return = false;
if (x($uid) && x($name)) {
$gid = self::getIdByName($uid, $name);
$return = self::remove($gid);
}
return $return;
}
/**
* @brief Adds a contact to a group
*
* @param int $gid
* @param int $cid
* @return boolean
*/
public static function addMember($gid, $cid)
{
if (!($gid && $cid)) {
return false;
}
$row_exists = dba::exists('group_member', ['gid' => $gid, 'contact-id' => $cid]);
if ($row_exists) {
// Row already existing, nothing to do
$return = true;
} else {
$return = dba::insert('group_member', ['gid' => $gid, 'contact-id' => $cid]);
}
return $return;
}
/**
* @brief Removes a contact from a group
*
* @param int $gid
* @param int $cid
* @return boolean
*/
public static function removeMember($gid, $cid)
{
if (!$gid) {
return false;
}
if (!($gid && $cid)) {
return false;
}
$return = dba::delete('group_member', ['gid' => $gid, 'contact-id' => $cid]);
return $return;
}
/**
* @brief Removes a contact from a group based on its name
*
* @deprecated Use Group::removeMember instead
*
* @param int $uid
* @param string $name
* @param int $cid
* @return boolean
*/
public static function removeMemberByName($uid, $name, $cid)
{
$gid = self::getIdByName($uid, $name);
$return = self::removeMember($gid, $cid);
return $return;
}
/**
* @brief Returns the combined list of contact ids from a group id list
*
* @param array $group_ids
* @param boolean $check_dead
* @param boolean $use_gcontact
* @return array
*/
public static function expand($group_ids, $check_dead = false, $use_gcontact = false)
{
if (!(is_array($group_ids) && count($group_ids))) {
return [];
}
$condition = '`gid` IN (' . substr(str_repeat("?, ", count($group_ids)), 0, -2) . ')';
if ($use_gcontact) {
$sql = 'SELECT `gcontact`.`id` AS `contact-id` FROM `group_member`
INNER JOIN `contact` ON `contact`.`id` = `group_member`.`contact-id`
INNER JOIN `gcontact` ON `gcontact`.`nurl` = `contact`.`nurl`
WHERE ' . $condition;
$param_arr = array_merge([$sql], $group_ids);
$stmt = call_user_func_array('dba::p', $param_arr);
} else {
$condition_array = array_merge([$condition], $group_ids);
$stmt = dba::select('group_member', ['contact-id'], $condition_array);
}
$return = array();
if (DBM::is_result($stmt)) {
while($group_member = dba::fetch($stmt)) {
$return[] = $group_member['contact-id'];
}
}
if ($check_dead && !$use_gcontact) {
require_once 'include/acl_selectors.php';
$return = prune_deadguys($return);
}
return $return;
}
/**
* @brief Returns a templated group selection list
*
* @param int $uid
* @param int $gid An optional pre-selected group
* @param string $label An optional label of the list
* @return string
*/
public static function displayGroupSelection($uid, $gid = 0, $label = '')
{
$o = '';
$groups = dba::select('group', [], ['deleted' => 0, 'uid' => $uid], ['order' => ['name' => 'ASC']]);
$display_groups = [
[
'name' => '',
'id' => '0',
'selected' => ''
]
];
foreach ($groups as $group) {
$display_groups[] = [
'name' => $group['name'],
'id' => $group['id'],
'selected' => $gid == $group['id'] ? 'true' : ''
];
}
logger('groups: ' . print_r($display_groups, true));
if ($label == '') {
$label = t('Default privacy group for new contacts');
}
$o = replace_macros(get_markup_template('group_selection.tpl'), array(
'$label' => $label,
'$groups' => $display_groups
));
return $o;
}
/**
* @brief Create group sidebar widget
*
* @param string $every
* @param string $each
* @param string $editmode
* 'standard' => include link 'Edit groups'
* 'extended' => include link 'Create new group'
* 'full' => include link 'Create new group' and provide for each group a link to edit this group
* @param int $group_id
* @param int $cid
* @return string
*/
public static function sidebarWidget($every = 'contacts', $each = 'group', $editmode = 'standard', $group_id = 0, $cid = 0)
{
$o = '';
if (!local_user()) {
return '';
}
$display_groups = [
[
'text' => t('Everybody'),
'id' => 0,
'selected' => (($group_id == 0) ? 'group-selected' : ''),
'href' => $every,
]
];
$groups = dba::select('group', [], ['deleted' => 0, 'uid' => local_user()], ['order' => ['name' => 'ASC']]);
$member_of = array();
if ($cid) {
$member_of = self::getByContactIdForUserId(local_user(), $cid);
}
if (DBM::is_result($groups)) {
foreach ($groups as $group) {
$selected = (($group_id == $group['id']) ? ' group-selected' : '');
if ($editmode == 'full') {
$groupedit = [
'href' => 'group/' . $group['id'],
'title' => t('edit'),
];
} else {
$groupedit = null;
}
$display_groups[] = [
'id' => $group['id'],
'cid' => $cid,
'text' => $group['name'],
'href' => $each . '/' . $group['id'],
'edit' => $groupedit,
'selected' => $selected,
'ismember' => in_array($group['id'], $member_of),
];
}
}
$tpl = get_markup_template('group_side.tpl');
$o = replace_macros($tpl, [
'$add' => t('add'),
'$title' => t('Groups'),
'$groups' => $display_groups,
'newgroup' => $editmode == 'extended' || $editmode == 'full' ? 1 : '',
'grouppage' => 'group/',
'$edittext' => t('Edit group'),
'$ungrouped' => $every === 'contacts' ? t('Contacts not in any group') : '',
'$createtext' => t('Create a new group'),
'$creategroup' => t('Group Name: '),
'$editgroupstext' => t('Edit groups'),
'$form_security_token' => get_form_security_token('group_edit'),
]);
return $o;
}
}