<?php

/**
 * ---------------------------------------------------------------------
 *
 * GLPI - Gestionnaire Libre de Parc Informatique
 *
 * http://glpi-project.org
 *
 * @copyright 2015-2024 Teclib' and contributors.
 * @copyright 2003-2014 by the INDEPNET Development Team.
 * @licence   https://www.gnu.org/licenses/gpl-3.0.html
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * ---------------------------------------------------------------------
 */

/**
 * Group_User Class
 *
 *  Relation between Group and User
 **/
class Group_User extends CommonDBRelation
{
   // From CommonDBRelation
    public static $itemtype_1                 = 'User';
    public static $items_id_1                 = 'users_id';

    public static $itemtype_2                 = 'Group';
    public static $items_id_2                 = 'groups_id';

    /**
     * Check if a user belongs to a group
     *
     * @since 9.4
     *
     * @param integer $users_id  the user ID
     * @param integer $groups_id the group ID
     *
     * @return boolean true if the user belongs to the group
     */
    public static function isUserInGroup($users_id, $groups_id)
    {
        return countElementsInTable(
            'glpi_groups_users',
            [
                'users_id' => $users_id,
                'groups_id' => $groups_id
            ]
        ) > 0;
    }

    /**
     * Get groups for a user
     *
     * @param integer $users_id  User id
     * @param array   $condition Query extra condition (default [])
     *
     * @return array
     **/
    public static function getUserGroups($users_id, $condition = [])
    {
        /** @var \DBmysql $DB */
        global $DB;

        $groups = [];
        $iterator = $DB->request([
            'SELECT' => [
                'glpi_groups.*',
                'glpi_groups_users.id AS IDD',
                'glpi_groups_users.id AS linkid',
                'glpi_groups_users.is_dynamic AS is_dynamic',
                'glpi_groups_users.is_manager AS is_manager',
                'glpi_groups_users.is_userdelegate AS is_userdelegate'
            ],
            'FROM'   => self::getTable(),
            'LEFT JOIN'    => [
                Group::getTable() => [
                    'FKEY' => [
                        Group::getTable() => 'id',
                        self::getTable()  => 'groups_id'
                    ]
                ]
            ],
            'WHERE'        => [
                'glpi_groups_users.users_id' => $users_id
            ] + $condition,
            'ORDER'        => 'glpi_groups.name'
        ]);
        foreach ($iterator as $row) {
            $groups[] = $row;
        }

        return $groups;
    }


    /**
     * Get users for a group
     *
     * @since 0.84
     *
     * @param integer $groups_id Group ID
     * @param array   $condition Query extra condition (default [])
     *
     * @return array
     **/
    public static function getGroupUsers($groups_id, $condition = [])
    {
        /** @var \DBmysql $DB */
        global $DB;

        $users = [];

        $iterator = $DB->request([
            'SELECT' => [
                'glpi_users.*',
                'glpi_groups_users.id AS IDD',
                'glpi_groups_users.id AS linkid',
                'glpi_groups_users.is_dynamic AS is_dynamic',
                'glpi_groups_users.is_manager AS is_manager',
                'glpi_groups_users.is_userdelegate AS is_userdelegate'
            ],
            'FROM'   => self::getTable(),
            'LEFT JOIN'    => [
                User::getTable() => [
                    'FKEY' => [
                        User::getTable() => 'id',
                        self::getTable()  => 'users_id'
                    ]
                ]
            ],
            'WHERE'        => [
                'glpi_groups_users.groups_id' => $groups_id
            ] + $condition,
            'ORDER'        => 'glpi_users.name'
        ]);
        foreach ($iterator as $row) {
            $users[] = $row;
        }

        return $users;
    }


    /**  Show groups of a user
     *
     * @param $user   User object
     **/
    public static function showForUser(User $user)
    {
        /** @var array $CFG_GLPI */
        global $CFG_GLPI;

        $ID = $user->fields['id'];
        if (
            !Group::canView()
            || !$user->can($ID, READ)
        ) {
            return false;
        }

        $canedit = $user->can($ID, UPDATE);

        $rand    = mt_rand();

        $iterator = self::getListForItem($user);
        $groups = [];
       //$groups  = self::getUserGroups($ID);
        $used    = [];
        foreach ($iterator as $data) {
            $used[$data["id"]] = $data["id"];
            $groups[] = $data;
        }

        if ($canedit) {
            echo "<div class='firstbloc'>";
            echo "<form name='groupuser_form$rand' id='groupuser_form$rand' method='post'";
            echo " action='" . Toolbox::getItemTypeFormURL('User') . "'>";

            echo "<table class='tab_cadre_fixe'>";
            echo "<tr class='tab_bg_1'><th colspan='6'>" . __('Associate to a group') . "</th></tr>";
            echo "<tr class='tab_bg_2'><td class='center'>";
            echo "<input type='hidden' name='users_id' value='$ID'>";

            $params = [
                'used'      => $used,
                'condition' => [
                    'is_usergroup' => 1,
                ] + getEntitiesRestrictCriteria(Group::getTable(), '', '', true)
            ];
            Group::dropdown($params);
            echo "</td><td>" . _n('Manager', 'Managers', 1) . "</td><td>";
            Dropdown::showYesNo('is_manager');

            echo "</td><td>" . __('Delegatee') . "</td><td>";
            Dropdown::showYesNo('is_userdelegate');

            echo "</td><td class='tab_bg_2 center'>";
            echo "<input type='submit' name='addgroup' value=\"" . _sx('button', 'Add') . "\"
                class='btn btn-primary'>";

            echo "</td></tr>";
            echo "</table>";
            Html::closeForm();
            echo "</div>";
        }

        echo "<div class='spaced'>";
        if ($canedit && count($used)) {
            $rand = mt_rand();
            Html::openMassiveActionsForm('mass' . __CLASS__ . $rand);
            echo "<input type='hidden' name='users_id' value='" . $user->fields['id'] . "'>";
            $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], count($used)),
                'container'     => 'mass' . __CLASS__ . $rand
            ];
            Html::showMassiveActions($massiveactionparams);
        }
        echo "<table class='tab_cadre_fixehov'>";
        $header_begin  = "<tr>";
        $header_top    = '';
        $header_bottom = '';
        $header_end    = '';

        if ($canedit && count($used)) {
            $header_begin  .= "<th width='10'>";
            $header_top    .= Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
            $header_bottom .= Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
            $header_end    .= "</th>";
        }
        $header_end .= "<th>" . Group::getTypeName(1) . "</th>";
        $header_end .= "<th>" . __('Dynamic') . "</th>";
        $header_end .= "<th>" . _n('Manager', 'Managers', 1) . "</th>";
        $header_end .= "<th>" . __('Delegatee') . "</th></tr>";
        echo $header_begin . $header_top . $header_end;

        $group = new Group();
        if (!empty($groups)) {
            Session::initNavigateListItems(
                'Group',
                //TRANS : %1$s is the itemtype name,
                              //        %2$s is the name of the item (used for headings of a list)
                                        sprintf(
                                            __('%1$s = %2$s'),
                                            User::getTypeName(1),
                                            $user->getName()
                                        )
            );

            foreach ($groups as $data) {
                if (!$group->getFromDB($data["id"])) {
                    continue;
                }
                Session::addToNavigateListItems('Group', $data["id"]);
                echo "<tr class='tab_bg_1'>";

                if ($canedit && count($used)) {
                    echo "<td width='10'>";
                    Html::showMassiveActionCheckBox(__CLASS__, $data["linkid"]);
                    echo "</td>";
                }
                echo "<td>" . $group->getLink() . "</td>";
                echo "<td class='center'>";
                if ($data['is_dynamic']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                     __('Dynamic') . "\">";
                }
                echo "<td class='center'>";
                if ($data['is_manager']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                    _n('Manager', 'Managers', 1) . "\">";
                }
                echo "</td><td class='center'>";
                if ($data['is_userdelegate']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                     __('Delegatee') . "\">";
                }
                echo "</td></tr>";
            }
            echo $header_begin . $header_bottom . $header_end;
        } else {
            echo "<tr class='tab_bg_1'>";
            echo "<td colspan='5' class='center'>" . __('None') . "</td></tr>";
        }
        echo "</table>";

        if ($canedit && count($used)) {
            $massiveactionparams['ontop'] = false;
            Html::showMassiveActions($massiveactionparams);
            Html::closeForm();
        }
        echo "</div>";
    }


    /**
     * Show form to add a user in current group
     *
     * @since 0.83
     *
     * @param $group                    Group object
     * @param $used_ids        Array    of already add users
     * @param $entityrestrict  Array    of entities
     * @param $crit            String   for criteria (for default dropdown)
     **/
    private static function showAddUserForm(Group $group, $used_ids, $entityrestrict, $crit)
    {
        $rand = mt_rand();
        $res  = User::getSqlSearchResult(true, "all", $entityrestrict, 0, $used_ids, '', 0, -1, 0, 1);

        $nb = count($res);

        if ($nb) {
            echo "<form name='groupuser_form$rand' id='groupuser_form$rand' method='post'
                action='" . Toolbox::getItemTypeFormURL(__CLASS__) . "'>";
            echo "<input type='hidden' name='groups_id' value='" . $group->fields['id'] . "'>";

            echo "<div class='firstbloc'>";
            echo "<table class='tab_cadre_fixe'>";
            echo "<tr class='tab_bg_1'><th colspan='6'>" . __('Add a user') . "</th></tr>";
            echo "<tr class='tab_bg_2'><td class='center'>";

            User::dropdown(['right'  => "all",
                'entity' => $entityrestrict,
                'with_no_right' => true,
                'used'   => $used_ids
            ]);

            echo "</td><td>" . _n('Manager', 'Managers', 1) . "</td><td>";
            Dropdown::showYesNo('is_manager', (($crit == 'is_manager') ? 1 : 0));

            echo "</td><td>" . __('Delegatee') . "</td><td>";
            Dropdown::showYesNo('is_userdelegate', (($crit == 'is_userdelegate') ? 1 : 0));

            echo "</td><td class='tab_bg_2 center'>";
            echo "<input type='hidden' name'is_dynamic' value='0'>";
            echo "<input type='submit' name='add' value=\"" . _sx('button', 'Add') . "\" class='btn btn-primary'>";
            echo "</td></tr>";
            echo "</table></div>";
            Html::closeForm();
        }
    }


    /**
     * Retrieve list of member of a Group
     *
     * @since 0.83
     *
     * @param Group    $group            Group object
     * @param array    $members          Array filled on output of member (filtered)
     * @param array    $ids              Array of ids (not filtered)
     * @param string   $crit             Filter (is_manager, is_userdelegate) (default '')
     * @param bool|int $tree             True to include member of sub-group (default 0)
     * @param bool     $check_entities   Apply entities restrictions ?
     *
     * @return String tab of entity for restriction
     **/
    public static function getDataForGroup(
        Group $group,
        &$members,
        &$ids,
        $crit = '',
        $tree = 0,
        bool $check_entities = true
    ) {
        /** @var \DBmysql $DB */
        global $DB;

        // Entity restriction for this group, according to user allowed entities
        if ($group->fields['is_recursive']) {
            $entityrestrict = getSonsOf('glpi_entities', $group->fields['entities_id']);

            // active entity could be a child of object entity
            if (
                ($_SESSION['glpiactive_entity'] != $group->fields['entities_id'])
                && in_array($_SESSION['glpiactive_entity'], $entityrestrict)
            ) {
                $entityrestrict = getSonsOf('glpi_entities', $_SESSION['glpiactive_entity']);
            }
        } else {
            $entityrestrict = $group->fields['entities_id'];
        }

        if ($tree) {
            $restrict = getSonsOf('glpi_groups', $group->getID());
        } else {
            $restrict = $group->getID();
        }

        // All group members
        $pu_table = Profile_User::getTable();
        $query = [
            'SELECT' => [
                'glpi_users.id',
                'glpi_groups_users.id AS linkid',
                'glpi_groups_users.groups_id',
                'glpi_groups_users.is_dynamic AS is_dynamic',
                'glpi_groups_users.is_manager AS is_manager',
                'glpi_groups_users.is_userdelegate AS is_userdelegate'
            ],
            'DISTINCT'  => true,
            'FROM'      => self::getTable(),
            'LEFT JOIN' => [
                User::getTable() => [
                    'ON' => [
                        self::getTable() => 'users_id',
                        User::getTable() => 'id'
                    ]
                ],
                $pu_table => [
                    'ON' => [
                        $pu_table        => 'users_id',
                        User::getTable() => 'id'
                    ]
                ]
            ],
            'WHERE' => [
                self::getTable() . '.groups_id'  => $restrict,
            ],
            'ORDERBY' => [
                User::getTable() . '.realname',
                User::getTable() . '.firstname',
                User::getTable() . '.name'
            ]
        ];

        // Add entities restrictions
        if ($check_entities) {
            $query['WHERE']['OR'] = [
                "$pu_table.entities_id" => null
            ] + getEntitiesRestrictCriteria($pu_table, '', $entityrestrict, 1);
        }

        $iterator = $DB->request($query);

        foreach ($iterator as $data) {
            // Add to display list, according to criterion
            if (empty($crit) || $data[$crit]) {
                $members[] = $data;
            }
            // Add to member list (member of sub-group are not member)
            if ($data['groups_id'] == $group->getID()) {
                $ids[]  = $data['id'];
            }
        }

        return $entityrestrict;
    }


    /**
     * Show users of a group
     *
     * @since 0.83
     *
     * @param $group  Group object: the group
     **/
    public static function showForGroup(Group $group)
    {
        /** @var array $CFG_GLPI */
        global $CFG_GLPI;

        $ID = $group->getID();
        if (
            !User::canView()
            || !$group->can($ID, READ)
        ) {
            return false;
        }

       // Have right to manage members
        $canedit = self::canUpdate();
        $rand    = mt_rand();
        $user    = new User();
        $crit    = Session::getSavedOption(__CLASS__, 'criterion', '');
        $tree    = Session::getSavedOption(__CLASS__, 'tree', 0);
        $used    = [];
        $ids     = [];

       // Retrieve member list
       // TODO: migrate to use CommonDBRelation::getListForItem()
        $entityrestrict = self::getDataForGroup($group, $used, $ids, $crit, $tree, false);

        if ($canedit) {
            self::showAddUserForm($group, $ids, $entityrestrict, $crit);
        }

       // Mini Search engine
        echo "<table class='tab_cadre_fixe'>";
        echo "<tr class='tab_bg_1'><th colspan='2'>" . User::getTypeName(Session::getPluralNumber()) . "</th></tr>";
        echo "<tr class='tab_bg_1'><td class='center'>";
        echo _n('Criterion', 'Criteria', 1) . "&nbsp;";
        $crits = ['is_manager'      => _n('Manager', 'Managers', 1),
            'is_userdelegate' => __('Delegatee')
        ];
        Dropdown::showFromArray(
            'crit',
            $crits,
            ['value'               => $crit,
                'on_change'           => 'reloadTab("start=0&criterion="+this.value)',
                'display_emptychoice' => true
            ]
        );
        if ($group->haveChildren()) {
            echo "</td><td class='center'>" . __('Child groups');
            Dropdown::showYesNo(
                'tree',
                $tree,
                -1,
                ['on_change' => 'reloadTab("start=0&tree="+this.value)']
            );
        } else {
            $tree = 0;
        }
        echo "</td></tr></table>";
        $number = count($used);
        $start  = (isset($_GET['start']) ? intval($_GET['start']) : 0);
        if ($start >= $number) {
            $start = 0;
        }

       // Display results
        if ($number) {
            echo "<div class='spaced'>";
            Html::printAjaxPager(
                sprintf(
                    __('%1$s (%2$s)'),
                    User::getTypeName(Session::getPluralNumber()),
                    __('D=Dynamic')
                ),
                $start,
                $number
            );

            Session::initNavigateListItems(
                'User',
                //TRANS : %1$s is the itemtype name,
                              //        %2$s is the name of the item (used for headings of a list)
                                        sprintf(
                                            __('%1$s = %2$s'),
                                            Group::getTypeName(1),
                                            $group->getName()
                                        )
            );

            if ($canedit) {
                Html::openMassiveActionsForm('mass' . __CLASS__ . $rand);
                $massiveactionparams = ['num_displayed'    => min(
                    $number - $start,
                    $_SESSION['glpilist_limit']
                ),
                    'container'        => 'mass' . __CLASS__ . $rand
                ];
                Html::showMassiveActions($massiveactionparams);
            }

            echo "<table class='tab_cadre_fixehov'>";

            $header_begin  = "<tr>";
            $header_top    = '';
            $header_bottom = '';
            $header_end    = '';

            if ($canedit) {
                $header_begin  .= "<th width='10'>";
                $header_top    .= Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
                $header_bottom .= Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
                $header_end    .= "</th>";
            }
            $header_end .= "<th>" . User::getTypeName(1) . "</th>";
            if ($tree) {
                $header_end .= "<th>" . Group::getTypeName(1) . "</th>";
            }
            $header_end .= "<th>" . __('Dynamic') . "</th>";
            $header_end .= "<th>" . _n('Manager', 'Managers', 1) . "</th>";
            $header_end .= "<th>" . __('Delegatee') . "</th>";
            $header_end .= "<th>" . __('Active') . "</th></tr>";
            echo $header_begin . $header_top . $header_end;

            $tmpgrp = new Group();

            for ($i = $start, $j = 0; ($i < $number) && ($j < $_SESSION['glpilist_limit']); $i++, $j++) {
                $data = $used[$i];
                $user->getFromDB($data["id"]);
                Session::addToNavigateListItems('User', $data["id"]);

                echo "\n<tr class='tab_bg_" . ($user->isDeleted() ? '1_2' : '1') . "'>";
                if ($canedit) {
                    echo "<td width='10'>";
                    Html::showMassiveActionCheckBox(__CLASS__, $data["linkid"]);
                    echo "</td>";
                }
                echo "<td>" . $user->getLink();
                if ($tree) {
                    echo "</td><td>";
                    if ($tmpgrp->getFromDB($data['groups_id'])) {
                        echo $tmpgrp->getLink(['comments' => true]);
                    }
                }
                echo "</td><td class='center'>";
                if ($data['is_dynamic']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                      __('Dynamic') . "\">";
                }
                echo "</td><td class='center'>";
                if ($data['is_manager']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                    _n('Manager', 'Managers', 1) . "\">";
                }
                echo "</td><td class='center'>";
                if ($data['is_userdelegate']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                      __('Delegatee') . "\">";
                }
                echo "</td><td class='center'>";
                if ($user->fields['is_active']) {
                    echo "<img src='" . $CFG_GLPI["root_doc"] . "/pics/ok.png' width='14' height='14' alt=\"" .
                    __('Active') . "\">";
                }
                echo "</tr>";
            }
            echo $header_begin . $header_bottom . $header_end;
            echo "</table>";
            if ($canedit) {
                $massiveactionparams['ontop'] = false;
                Html::showMassiveActions($massiveactionparams);
                Html::closeForm();
            }
            Html::printAjaxPager(
                sprintf(
                    __('%1$s (%2$s)'),
                    User::getTypeName(Session::getPluralNumber()),
                    __('D=Dynamic')
                ),
                $start,
                $number
            );

            echo "</div>";
        } else {
            echo "<p class='center b'>" . __('No item found') . "</p>";
        }
    }


    /**
     * @since 0.85
     *
     * @see CommonDBRelation::getRelationMassiveActionsSpecificities()
     **/
    public static function getRelationMassiveActionsSpecificities()
    {
        $specificities                           = parent::getRelationMassiveActionsSpecificities();

        $specificities['select_items_options_1'] = ['right'     => 'all'];
        $specificities['select_items_options_2'] = [
            'condition' => [
                'is_usergroup' => 1,
            ] + getEntitiesRestrictCriteria(Group::getTable(), '', '', true)
        ];

       // Define normalized action for add_item and remove_item
        $specificities['normalized']['add'][]    = 'add_supervisor';
        $specificities['normalized']['add'][]    = 'add_delegatee';

        $specificities['button_labels']['add_supervisor'] = $specificities['button_labels']['add'];
        $specificities['button_labels']['add_delegatee']  = $specificities['button_labels']['add'];

        $specificities['update_if_different'] = true;

        return $specificities;
    }


    public static function getRelationInputForProcessingOfMassiveActions(
        $action,
        CommonDBTM $item,
        array $ids,
        array $input
    ) {
        switch ($action) {
            case 'add_supervisor':
                return ['is_manager' => 1];

            case 'add_delegatee':
                return ['is_userdelegate' => 1];
        }

        return [];
    }


    /**
     * Get search function for the class
     *
     * @return array of search option
     **/
    public function rawSearchOptions()
    {
        $tab = [];

        $tab[] = [
            'id'                 => 'common',
            'name'               => __('Characteristics')
        ];

        $tab[] = [
            'id'                 => '2',
            'table'              => $this->getTable(),
            'field'              => 'id',
            'name'               => __('ID'),
            'massiveaction'      => false,
            'datatype'           => 'number'
        ];

        $tab[] = [
            'id'                 => '3',
            'table'              => $this->getTable(),
            'field'              => 'is_dynamic',
            'name'               => __('Dynamic'),
            'datatype'           => 'bool',
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '4',
            'table'              => 'glpi_groups',
            'field'              => 'completename',
            'name'               => Group::getTypeName(1),
            'massiveaction'      => false,
            'datatype'           => 'dropdown'
        ];

        $tab[] = [
            'id'                 => '5',
            'table'              => 'glpi_users',
            'field'              => 'name',
            'name'               => User::getTypeName(1),
            'massiveaction'      => false,
            'datatype'           => 'dropdown',
            'right'              => 'all'
        ];

        $tab[] = [
            'id'                 => '6',
            'table'              => $this->getTable(),
            'field'              => 'is_manager',
            'name'               => _n('Manager', 'Managers', 1),
            'datatype'           => 'bool'
        ];

        $tab[] = [
            'id'                 => '7',
            'table'              => $this->getTable(),
            'field'              => 'is_userdelegate',
            'name'               => __('Delegatee'),
            'datatype'           => 'bool'
        ];

        return $tab;
    }


    /**
     * @param $user_ID
     * @param $only_dynamic (false by default
     **/
    public static function deleteGroups($user_ID, $only_dynamic = false)
    {
        $crit['users_id'] = $user_ID;
        if ($only_dynamic) {
            $crit['is_dynamic'] = '1';
        }
        $obj = new self();
        $obj->deleteByCriteria($crit);
    }


    public function getTabNameForItem(CommonGLPI $item, $withtemplate = 0)
    {

        if (!$withtemplate) {
            $nb = 0;
            switch ($item->getType()) {
                case 'User':
                    if (Group::canView()) {
                        if ($_SESSION['glpishow_count_on_tabs']) {
                            $nb = self::countForItem($item);
                        }
                        return self::createTabEntry(Group::getTypeName(Session::getPluralNumber()), $nb);
                    }
                    break;

                case 'Group':
                    if (User::canView()) {
                        if ($_SESSION['glpishow_count_on_tabs']) {
                              $nb = self::countForItem($item);
                        }
                        return self::createTabEntry(User::getTypeName(Session::getPluralNumber()), $nb);
                    }
                    break;
            }
        }
        return '';
    }


    public static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $withtemplate = 0)
    {

        switch ($item->getType()) {
            case 'User':
                self::showForUser($item);
                break;

            case 'Group':
                self::showForGroup($item);
                break;
        }
        return true;
    }

    /**
     * Get linked items list for specified item
     *
     * @since 9.3.1
     *
     * @param CommonDBTM $item  Item instance
     * @param boolean    $noent Flag to not compute entity information (see Document_Item::getListForItemParams)
     *
     * @return array
     */
    protected static function getListForItemParams(CommonDBTM $item, $noent = false)
    {
        $params = parent::getListForItemParams($item, $noent);
        $params['SELECT'][] = self::getTable() . '.is_manager';
        $params['SELECT'][] = self::getTable() . '.is_userdelegate';
        return $params;
    }


    public function post_addItem()
    {
        /** @var \DBmysql $DB */
        global $DB;

        parent::post_addItem();

       // add new user to plannings
        $groups_id  = $this->fields['groups_id'];
        $planning_k = 'group_' . $groups_id . '_users';

       // find users with the current group in their plannings
        $user_inst = new User();
        $users = $user_inst->find([
            'plannings' => ['LIKE', "%$planning_k%"]
        ]);

       // add the new user to found plannings
        $query = $DB->buildUpdate(
            User::getTable(),
            [
                'plannings' => new QueryParam(),
            ],
            [
                'id'        => new QueryParam()
            ]
        );
        $stmt = $DB->prepare($query);
        $in_transaction = $DB->inTransaction();
        if (!$in_transaction) {
            $DB->beginTransaction();
        }
        foreach ($users as $user) {
            $users_id  = $user['id'];
            $plannings = importArrayFromDB($user['plannings']);
            $nb_users  = count($plannings['plannings'][$planning_k]['users']);

           // add the planning for the user
            $plannings['plannings'][$planning_k]['users']['user_' . $this->fields['users_id']] = [
                'color'   => Planning::getPaletteColor('bg', $nb_users),
                'display' => true,
                'type'    => 'user'
            ];

           // if current user logged, append also to its session
            if ($users_id == Session::getLoginUserID()) {
                $_SESSION['glpi_plannings'] = $plannings;
            }

           // save the planning completed to db
            $json_plannings = exportArrayToDB($plannings);
            $stmt->bind_param('si', $json_plannings, $users_id);
            $DB->executeStatement($stmt);
        }

        if (!$in_transaction) {
            $DB->commit();
        }
        $stmt->close();
    }


    public function post_purgeItem()
    {
        /** @var \DBmysql $DB */
        global $DB;

        parent::post_purgeItem();

       // remove user from plannings
        $groups_id  = $this->fields['groups_id'];
        $planning_k = 'group_' . $groups_id . '_users';

       // find users with the current group in their plannings
        $user_inst = new User();
        $users = $user_inst->find([
            'plannings' => ['LIKE', "%$planning_k%"]
        ]);

       // remove the deleted user to found plannings
        $query = $DB->buildUpdate(
            User::getTable(),
            [
                'plannings' => new QueryParam(),
            ],
            [
                'id'        => new QueryParam()
            ]
        );
        $stmt = $DB->prepare($query);
        $in_transaction = $DB->inTransaction();
        if (!$in_transaction) {
            $DB->beginTransaction();
        }
        foreach ($users as $user) {
            $users_id  = $user['id'];
            $plannings = importArrayFromDB($user['plannings']);

           // delete planning for the user
            unset($plannings['plannings'][$planning_k]['users']['user_' . $this->fields['users_id']]);

           // if current user logged, append also to its session
            if ($users_id == Session::getLoginUserID()) {
                $_SESSION['glpi_plannings'] = $plannings;
            }

           // save the planning completed to db
            $json_plannings = exportArrayToDB($plannings);
            $stmt->bind_param('si', $json_plannings, $users_id);
            $DB->executeStatement($stmt);
        }

        if (!$in_transaction) {
            $DB->commit();
        }
        $stmt->close();
    }
}
