<?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/>.
 *
 * ---------------------------------------------------------------------
 */

use Glpi\Application\View\TemplateRenderer;

/**
 *  Contract class
 */
class Contract extends CommonDBTM
{
    use Glpi\Features\Clonable;

   // From CommonDBTM
    public $dohistory                   = true;
    protected static $forward_entity_to = ['ContractCost'];

    public static $rightname                   = 'contract';
    protected $usenotepad               = true;

    const RENEWAL_NEVER = 0;
    const RENEWAL_TACIT = 1;
    const RENEWAL_EXPRESS = 2;

    public function getCloneRelations(): array
    {
        return [
            Contract_Item::class,
            Contract_Supplier::class,
            ContractCost::class,
        ];
    }



    public static function getTypeName($nb = 0)
    {
        return _n('Contract', 'Contracts', $nb);
    }


    public function post_getEmpty()
    {

        if (isset($_SESSION['glpiactive_entity'])) {
            $this->fields["alert"] = Entity::getUsedConfig(
                "use_contracts_alert",
                $_SESSION['glpiactive_entity'],
                "default_contract_alert",
                0
            );
        }
        $this->fields["notice"] = 0;
    }


    public function cleanDBonPurge()
    {

        $this->deleteChildrenAndRelationsFromDb(
            [
                Contract_Item::class,
                Contract_Supplier::class,
                ContractCost::class,
            ]
        );

       // Alert does not extends CommonDBConnexity
        $alert = new Alert();
        $alert->cleanDBonItemDelete($this->getType(), $this->fields['id']);
    }


    public function defineTabs($options = [])
    {

        $ong = [];
        $this->addDefaultFormTab($ong);
        $this->addImpactTab($ong, $options);
        $this->addStandardTab('ContractCost', $ong, $options);
        $this->addStandardTab('Contract_Supplier', $ong, $options);
        $this->addStandardTab('Contract_Item', $ong, $options);
        $this->addStandardTab('Document_Item', $ong, $options);
        $this->addStandardTab('ManualLink', $ong, $options);
        $this->addStandardTab('Notepad', $ong, $options);
        $this->addStandardTab('KnowbaseItem_Item', $ong, $options);
        $this->addStandardTab(Ticket_Contract::class, $ong, $options);
        $this->addStandardTab('Log', $ong, $options);

        return $ong;
    }


    public function pre_updateInDB()
    {

       // Clean end alert if begin_date is after old one
       // Or if duration is greater than old one
        if (
            (isset($this->oldvalues['begin_date'])
            && ($this->oldvalues['begin_date'] < $this->fields['begin_date']))
            || (isset($this->oldvalues['duration'])
              && ($this->oldvalues['duration'] < $this->fields['duration']))
        ) {
            $alert = new Alert();
            $alert->clear($this->getType(), $this->fields['id'], Alert::END);
        }

       // Clean notice alert if begin_date is after old one
       // Or if duration is greater than old one
       // Or if notice is lesser than old one
        if (
            (isset($this->oldvalues['begin_date'])
            && ($this->oldvalues['begin_date'] < $this->fields['begin_date']))
            || (isset($this->oldvalues['duration'])
              && ($this->oldvalues['duration'] < $this->fields['duration']))
            || (isset($this->oldvalues['notice'])
              && ($this->oldvalues['notice'] > $this->fields['notice']))
        ) {
            $alert = new Alert();
            $alert->clear($this->getType(), $this->fields['id'], Alert::NOTICE);
        }
    }

    /**
     * Print the contract form
     *
     * @param $ID        integer ID of the item
     * @param $options   array
     *     - target filename : where to go when done.
     *     - withtemplate boolean : template or basic item
     *
     *@return boolean item found
     */
    public function showForm($ID, array $options = [])
    {
        $this->initForm($ID, $options);
        TemplateRenderer::getInstance()->display('pages/management/contract.html.twig', [
            'item'   => $this,
            'params' => $options,
        ]);
        return true;
    }


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

        $tab = [];

        $joinparams = [
            'beforejoin' => [
                'table'      => 'glpi_contracts_items',
                'joinparams' => [
                    'jointype' => 'itemtype_item'
                ]
            ]
        ];

        $joinparamscost = [
            'jointype'   => 'child',
            'beforejoin' => [
                'table'      => 'glpi_contracts',
                'joinparams' => $joinparams
            ]
        ];

        $tab[] = [
            'id'                 => 'contract',
            'name'               => self::getTypeName(Session::getPluralNumber())
        ];

        $tab[] = [
            'id'                 => '139',
            'table'              => 'glpi_contracts_items',
            'field'              => 'id',
            'name'               => _x('quantity', 'Number of contracts'),
            'forcegroupby'       => true,
            'usehaving'          => true,
            'datatype'           => 'count',
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'itemtype_item'
            ]
        ];

        $tab[] = [
            'id'                 => '29',
            'table'              => 'glpi_contracts',
            'field'              => 'name',
            'name'               => __('Name'),
            'forcegroupby'       => true,
            'datatype'           => 'itemlink',
            'massiveaction'      => false,
            'joinparams'         => $joinparams
        ];

        $tab[] = [
            'id'                 => '30',
            'table'              => 'glpi_contracts',
            'field'              => 'num',
            'name'               => __('Number'),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams,
            'datatype'           => 'string'
        ];

        $tab[] = [
            'id'                 => '129',
            'table'              => 'glpi_contracttypes',
            'field'              => 'name',
            'name'               => _n('Type', 'Types', 1),
            'datatype'           => 'dropdown',
            'massiveaction'      => false,
            'joinparams'         => [
                'beforejoin'         => [
                    'table'              => 'glpi_contracts',
                    'joinparams'         => $joinparams
                ]
            ]
        ];

        $tab[] = [
            'id'                 => '130',
            'table'              => 'glpi_contracts',
            'field'              => 'duration',
            'name'               => __('Duration'),
            'datatype'           => 'number',
            'max'                => '120',
            'unit'               => 'month',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams
        ];

        $tab[] = [
            'id'                 => '131',
            'table'              => 'glpi_contracts',
            'field'              => 'periodicity',
                                 //TRANS: %1$s is Contract, %2$s is field name
            'name'               => __('Periodicity'),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams,
            'datatype'           => 'number',
            'min'                => '12',
            'max'                => '60',
            'step'               => '12',
            'toadd'              => [
                0 => Dropdown::EMPTY_VALUE,
                1 => sprintf(_n('%d month', '%d months', 1), 1),
                2 => sprintf(_n('%d month', '%d months', 2), 2),
                3 => sprintf(_n('%d month', '%d months', 3), 3),
                6 => sprintf(_n('%d month', '%d months', 6), 6)
            ],
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '132',
            'table'              => 'glpi_contracts',
            'field'              => 'begin_date',
            'name'               => __('Start date'),
            'forcegroupby'       => true,
            'datatype'           => 'date',
            'maybefuture'        => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams
        ];

        $tab[] = [
            'id'                 => '133',
            'table'              => 'glpi_contracts',
            'field'              => 'accounting_number',
            'name'               => __('Account number'),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'datatype'           => 'string',
            'joinparams'         => $joinparams,
        ];

        $tab[] = [
            'id'                 => '134',
            'table'              => 'glpi_contracts',
            'field'              => 'end_date',
            'name'               => __('End date'),
            'forcegroupby'       => true,
            'datatype'           => 'date_delay',
            'maybefuture'        => true,
            'datafields'         => [
                '1'                  => 'begin_date',
                '2'                  => 'duration'
            ],
            'searchunit'         => 'MONTH',
            'delayunit'          => 'MONTH',
            'massiveaction'      => false,
            'joinparams'         => $joinparams
        ];

        $tab[] = [
            'id'                 => '135',
            'table'              => 'glpi_contracts',
            'field'              => 'notice',
            'name'               => __('Notice'),
            'datatype'           => 'number',
            'max'                => '120',
            'unit'               => 'month',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams
        ];

        $tab[] = [
            'id'                 => '136',
            'table'              => 'glpi_contractcosts',
            'field'              => 'totalcost',
            'name'               => _n('Cost', 'Costs', 1),
            'forcegroupby'       => true,
            'usehaving'          => true,
            'datatype'           => 'decimal',
            'massiveaction'      => false,
            'joinparams'         => $joinparamscost,
            'computation'        =>
            '(SUM(' . $DB->quoteName('TABLE.cost') . ') / COUNT(' .
            $DB->quoteName('TABLE.id') . ')) * COUNT(DISTINCT ' .
            $DB->quoteName('TABLE.id') . ')',
            'nometa'             => true, // cannot GROUP_CONCAT a SUM
        ];

        $tab[] = [
            'id'                 => '137',
            'table'              => 'glpi_contracts',
            'field'              => 'billing',
            'name'               => __('Invoice period'),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams,
            'datatype'           => 'number',
            'min'                => '12',
            'max'                => '60',
            'step'               => '12',
            'toadd'              => [
                0 => Dropdown::EMPTY_VALUE,
                1 => sprintf(_n('%d month', '%d months', 1), 1),
                2 => sprintf(_n('%d month', '%d months', 2), 2),
                3 => sprintf(_n('%d month', '%d months', 3), 3),
                6 => sprintf(_n('%d month', '%d months', 6), 6)
            ],
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '138',
            'table'              => 'glpi_contracts',
            'field'              => 'renewal',
            'name'               => __('Renewal'),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => $joinparams,
            'datatype'           => 'specific'
        ];

        $tab[] = [
            'id'                 => '139',
            'table'              => 'glpi_locations',
            'field'              => 'completename',
            'name'               => Location::getTypeName(1),
            'datatype'           => 'dropdown',
            'massiveaction'      => false,
            'joinparams'         => [
                'beforejoin'         => [
                    'table'              => 'glpi_contracts',
                    'joinparams'         => $joinparams
                ]
            ]
        ];

        return $tab;
    }


    public function getSpecificMassiveActions($checkitem = null)
    {

        $isadmin = static::canUpdate();
        $actions = parent::getSpecificMassiveActions($checkitem);

        if ($isadmin) {
            $prefix                    = 'Contract_Item' . MassiveAction::CLASS_ACTION_SEPARATOR;
            $actions[$prefix . 'add']    = _x('button', 'Add an item');
            $actions[$prefix . 'remove'] = _x('button', 'Remove an item');
            $actions['Contract_Supplier' . MassiveAction::CLASS_ACTION_SEPARATOR . 'add']
               = _x('button', 'Add a supplier');
        }

        return $actions;
    }


    public static function getSpecificValueToSelect($field, $name = '', $values = '', array $options = [])
    {

        if (!is_array($values)) {
            $values = [$field => $values];
        }
        $options['display'] = false;
        switch ($field) {
            case 'alert':
                $options['name']  = $name;
                $options['value'] = $values[$field];
                return self::dropdownAlert($options);

            case 'renewal':
                $options['name']  = $name;
                return self::dropdownContractRenewal($name, $values[$field], false);
        }
        return parent::getSpecificValueToSelect($field, $name, $values, $options);
    }


    public static function getSpecificValueToDisplay($field, $values, array $options = [])
    {

        if (!is_array($values)) {
            $values = [$field => $values];
        }
        switch ($field) {
            case 'alert':
                return self::getAlertName($values[$field]);

            case 'renewal':
                return self::getContractRenewalName($values[$field]);

            case '_virtual_expiration':
                return Infocom::getWarrantyExpir(
                    $values['begin_date'],
                    $values['duration'],
                    0,
                    true,
                    ($values['renewal'] == self::RENEWAL_TACIT)
                );
        }
        return parent::getSpecificValueToDisplay($field, $values, $options);
    }


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

        $tab = [];

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

        $tab[] = [
            'id'                 => '1',
            'table'              => $this->getTable(),
            'field'              => 'name',
            'name'               => __('Name'),
            'datatype'           => 'itemlink',
            'massiveaction'      => false,
        ];

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

        $locations_sos = Location::rawSearchOptionsToAdd();
        foreach ($locations_sos as &$locations_so) {
            if ($locations_so['id'] == '3') {
                //initially used in contracts
                $locations_so['id'] = '8';
            }
        }
        $tab = array_merge($tab, $locations_sos);

        $tab[] = [
            'id'                 => '3',
            'table'              => $this->getTable(),
            'field'              => 'num',
            'name'               => _x('phone', 'Number'),
            'datatype'           => 'string',
        ];

        $tab[] = [
            'id'                 => '31',
            'table'              => 'glpi_states',
            'field'              => 'completename',
            'name'               => __('Status'),
            'datatype'           => 'dropdown',
            'condition'          => ['is_visible_contract' => 1]
        ];

        $tab[] = [
            'id'                 => '4',
            'table'              => 'glpi_contracttypes',
            'field'              => 'name',
            'name'               => _n('Type', 'Types', 1),
            'datatype'           => 'dropdown'
        ];

        $tab[] = [
            'id'                 => '5',
            'table'              => $this->getTable(),
            'field'              => 'begin_date',
            'name'               => __('Start date'),
            'datatype'           => 'date',
            'maybefuture'        => true
        ];

        $tab[] = [
            'id'                 => '6',
            'table'              => $this->getTable(),
            'field'              => 'duration',
            'name'               => __('Duration'),
            'datatype'           => 'number',
            'max'                => 120,
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '19',
            'table'              => $this->getTable(),
            'field'              => 'date_mod',
            'name'               => __('Last update'),
            'datatype'           => 'datetime',
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '121',
            'table'              => $this->getTable(),
            'field'              => 'date_creation',
            'name'               => __('Creation date'),
            'datatype'           => 'datetime',
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '20',
            'table'              => $this->getTable(),
            'field'              => 'end_date',
            'name'               => __('End date'),
            'datatype'           => 'date_delay',
            'datafields'         => [
                '1'                  => 'begin_date',
                '2'                  => 'duration'
            ],
            'searchunit'         => 'MONTH',
            'delayunit'          => 'MONTH',
            'maybefuture'        => true,
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '7',
            'table'              => $this->getTable(),
            'field'              => 'notice',
            'name'               => __('Notice'),
            'datatype'           => 'number',
            'max'                => 120,
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '21',
            'table'              => $this->getTable(),
            'field'              => 'periodicity',
            'name'               => __('Periodicity'),
            'datatype'           => 'number',
            'min'                => 12,
            'max'                => 60,
            'step'               => 12,
            'toadd'              => [
                0 => Dropdown::EMPTY_VALUE,
                1 => sprintf(_n('%d month', '%d months', 1), 1),
                2 => sprintf(_n('%d month', '%d months', 2), 2),
                3 => sprintf(_n('%d month', '%d months', 3), 3),
                6 => sprintf(_n('%d month', '%d months', 6), 6)
            ],
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '22',
            'table'              => $this->getTable(),
            'field'              => 'billing',
            'name'               => __('Invoice period'),
            'datatype'           => 'number',
            'min'                => 12,
            'max'                => 60,
            'step'               => 12,
            'toadd'              => [
                0 => Dropdown::EMPTY_VALUE,
                1 => sprintf(_n('%d month', '%d months', 1), 1),
                2 => sprintf(_n('%d month', '%d months', 2), 2),
                3 => sprintf(_n('%d month', '%d months', 3), 3),
                6 => sprintf(_n('%d month', '%d months', 6), 6)
            ],
            'unit'               => 'month'
        ];

        $tab[] = [
            'id'                 => '10',
            'table'              => $this->getTable(),
            'field'              => 'accounting_number',
            'name'               => __('Account number'),
            'datatype'           => 'string'
        ];

        $tab[] = [
            'id'                 => '23',
            'table'              => $this->getTable(),
            'field'              => 'renewal',
            'name'               => __('Renewal'),
            'datatype'           => 'specific',
            'searchtype'         => ['equals', 'notequals']
        ];

        $tab[] = [
            'id'                 => '12',
            'table'              => $this->getTable(),
            'field'              => '_virtual_expiration', // virtual field
            'additionalfields'   => [
                'begin_date',
                'duration',
                'renewal'
            ],
            'name'               => __('Expiration'),
            'datatype'           => 'specific',
            'nosearch'           => true,
            'nosort'             => true,
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '13',
            'table'              => $this->getTable(),
            'field'              => 'expire_notice',
            'name'               => __('Expiration date + notice'),
            'datatype'           => 'date_delay',
            'datafields'         => [
                '1'                  => 'begin_date',
                '2'                  => 'duration',
                '3'                  => 'notice'
            ],
            'searchunit'         => 'DAY',
            'delayunit'          => 'MONTH',
            'maybefuture'        => true,
            'massiveaction'      => false
        ];

        $tab[] = [
            'id'                 => '16',
            'table'              => $this->getTable(),
            'field'              => 'comment',
            'name'               => __('Comments'),
            'datatype'           => 'text'
        ];

        $tab[] = [
            'id'                 => '80',
            'table'              => 'glpi_entities',
            'field'              => 'completename',
            'name'               => Entity::getTypeName(1),
            'massiveaction'      => false,
            'datatype'           => 'dropdown'
        ];

        $tab[] = [
            'id'                 => '59',
            'table'              => $this->getTable(),
            'field'              => 'alert',
            'name'               => __('Email alarms'),
            'datatype'           => 'specific',
            'searchtype'         => ['equals', 'notequals']
        ];

        $tab[] = [
            'id'                 => '86',
            'table'              => $this->getTable(),
            'field'              => 'is_recursive',
            'name'               => __('Child entities'),
            'datatype'           => 'bool'
        ];

        $tab[] = [
            'id'                 => '72',
            'table'              => 'glpi_contracts_items',
            'field'              => 'id',
            'name'               => _x('quantity', 'Number of items'),
            'forcegroupby'       => true,
            'usehaving'          => true,
            'datatype'           => 'count',
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ]
        ];

        $tab[] = [
            'id'                 => '29',
            'table'              => 'glpi_suppliers',
            'field'              => 'name',
            'name'               => _n(
                'Associated supplier',
                'Associated suppliers',
                Session::getPluralNumber()
            ),
            'forcegroupby'       => true,
            'datatype'           => 'itemlink',
            'massiveaction'      => false,
            'joinparams'         => [
                'beforejoin'         => [
                    'table'              => 'glpi_contracts_suppliers',
                    'joinparams'         => [
                        'jointype'           => 'child'
                    ]
                ]
            ]
        ];

        $tab[] = [
            'id'                 => '50',
            'table'              => $this->getTable(),
            'field'              => 'template_name',
            'name'               => __('Template name'),
            'datatype'           => 'text',
            'massiveaction'      => false,
            'nosearch'           => true,
            'nodisplay'          => true,
        ];

       // add objectlock search options
        $tab = array_merge($tab, ObjectLock::rawSearchOptionsToAdd(get_class($this)));

        $tab = array_merge($tab, Notepad::rawSearchOptionsToAdd());

        $tab[] = [
            'id'                 => 'cost',
            'name'               => _n('Cost', 'Costs', 1)
        ];

        $tab[] = [
            'id'                 => '11',
            'table'              => 'glpi_contractcosts',
            'field'              => 'totalcost',
            'name'               => __('Total cost'),
            'datatype'           => 'decimal',
            'forcegroupby'       => true,
            'usehaving'          => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ],
            'computation'        =>
            '(SUM(' . $DB->quoteName('TABLE.cost') . ') / COUNT(' .
            $DB->quoteName('TABLE.id') . ')) * COUNT(DISTINCT ' .
            $DB->quoteName('TABLE.id') . ')',
            'nometa'             => true, // cannot GROUP_CONCAT a SUM
        ];

        $tab[] = [
            'id'                 => '41',
            'table'              => 'glpi_contractcosts',
            'field'              => 'cost',
            'name'               => _n('Cost', 'Costs', Session::getPluralNumber()),
            'datatype'           => 'decimal',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ]
        ];

        $tab[] = [
            'id'                 => '42',
            'table'              => 'glpi_contractcosts',
            'field'              => 'begin_date',
            'name'               => sprintf(__('%1$s - %2$s'), _n('Cost', 'Costs', 1), __('Begin date')),
            'datatype'           => 'date',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ]
        ];

        $tab[] = [
            'id'                 => '43',
            'table'              => 'glpi_contractcosts',
            'field'              => 'end_date',
            'name'               => sprintf(__('%1$s - %2$s'), _n('Cost', 'Costs', 1), __('End date')),
            'datatype'           => 'date',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ]
        ];

        $tab[] = [
            'id'                 => '44',
            'table'              => 'glpi_contractcosts',
            'field'              => 'name',
            'name'               => sprintf(__('%1$s - %2$s'), _n('Cost', 'Costs', 1), __('Name')),
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'jointype'           => 'child'
            ],
            'datatype'           => 'dropdown'
        ];

        $tab[] = [
            'id'                 => '45',
            'table'              => 'glpi_budgets',
            'field'              => 'name',
            'name'               => sprintf(__('%1$s - %2$s'), _n('Cost', 'Costs', 1), Budget::getTypeName(1)),
            'datatype'           => 'dropdown',
            'forcegroupby'       => true,
            'massiveaction'      => false,
            'joinparams'         => [
                'beforejoin'         => [
                    'table'              => 'glpi_contractcosts',
                    'joinparams'         => [
                        'jointype'           => 'child'
                    ]
                ]
            ]
        ];

        return $tab;
    }


    /**
     * Show central contract resume
     * HTML array
     *
     * @param bool $display if false, return html
     *
     * @return string|void Return generated content if `display` parameter is true.
     **/
    public static function showCentral(bool $display = true)
    {
        /**
         * @var array $CFG_GLPI
         * @var \DBmysql $DB
         */
        global $CFG_GLPI, $DB;

        if (!Contract::canView()) {
            return;
        }

       // No recursive contract, not in local management
       // contrats echus depuis moins de 30j
        $table = self::getTable();
        $result = $DB->request([
            'COUNT'  => 'cpt',
            'FROM'   => $table,
            'WHERE'  => [
                'is_deleted'   => 0,
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())>-30'),
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())<0')
            ] + getEntitiesRestrictCriteria($table)
        ])->current();
        $contract0 = $result['cpt'];

       // contrats  echeance j-7
        $result = $DB->request([
            'COUNT'  => 'cpt',
            'FROM'   => $table,
            'WHERE'  => [
                'is_deleted'   => 0,
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())>0'),
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())<=7')
            ] + getEntitiesRestrictCriteria($table)
        ])->current();
        $contract7 = $result['cpt'];

       // contrats echeance j -30
        $result = $DB->request([
            'COUNT'  => 'cpt',
            'FROM'   => $table,
            'WHERE'  => [
                'is_deleted'   => 0,
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())>7'),
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL ' . $DB->quoteName("duration") . ' MONTH),CURDATE())<30')
            ] + getEntitiesRestrictCriteria($table)
        ])->current();
        $contract30 = $result['cpt'];

       // contrats avec pr??avis echeance j-7
        $result = $DB->request([
            'COUNT'  => 'cpt',
            'FROM'   => $table,
            'WHERE'  => [
                'is_deleted'   => 0,
                'notice'       => ['<>', 0],
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL (' . $DB->quoteName("duration") . '-' . $DB->quoteName('notice') . ') MONTH),CURDATE())>0'),
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL (' . $DB->quoteName("duration") . '-' . $DB->quoteName('notice') . ') MONTH),CURDATE())<=7')
            ] + getEntitiesRestrictCriteria($table)
        ])->current();
        $contractpre7 = $result['cpt'];

       // contrats avec pr??avis echeance j -30
        $result = $DB->request([
            'COUNT'  => 'cpt',
            'FROM'   => $table,
            'WHERE'  => [
                'is_deleted'   => 0,
                'notice'       => ['<>', 0],
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL (' . $DB->quoteName("duration") . '-' . $DB->quoteName('notice') . ') MONTH),CURDATE())>7'),
                new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName("begin_date") . ', INTERVAL (' . $DB->quoteName("duration") . '-' . $DB->quoteName('notice') . ') MONTH),CURDATE())<30')
            ] + getEntitiesRestrictCriteria($table)
        ])->current();
        $contractpre30 = $result['cpt'];

        $twig_params = [
            'title'     => [
                'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?reset=reset",
                'text'   =>  self::getTypeName(1),
                'icon'   => self::getIcon(),
            ],
            'items'     => []
        ];

        $options = [
            'reset' => 'reset',
            'sort'  => 12,
            'order' => 'DESC',
            'start' => 0,
            'criteria' => [
                [
                    'field'      => 12,
                    'value'      => '<0',
                    'searchtype' => 'contains',
                ],
                [
                    'field'      => 12,
                    'link'       => 'AND',
                    'value'      => '>-30',
                    'searchtype' => 'contains',
                ]
            ]
        ];

        $twig_params['items'][] = [
            'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?" . Toolbox::append_params($options),
            'text'   => __('Contracts expired in the last 30 days'),
            'count'  => $contract0
        ];

        $options['criteria'][0]['value'] = '>0';
        $options['criteria'][1]['value'] = '<7';
        $twig_params['items'][] = [
            'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?" . Toolbox::append_params($options),
            'text'   => __('Contracts expiring in less than 7 days'),
            'count'  => $contract7
        ];

        $options['criteria'][0]['value'] = '>6';
        $options['criteria'][1]['value'] = '<30';
        $twig_params['items'][] = [
            'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?" . Toolbox::append_params($options),
            'text'   => __('Contracts expiring in less than 30 days'),
            'count'  => $contract30
        ];

        $options['criteria'][0]['field'] = 13;
        $options['criteria'][0]['value'] = '>0';
        $options['criteria'][1]['field'] = 13;
        $options['criteria'][1]['value'] = '<7';
        $twig_params['items'][] = [
            'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?" . Toolbox::append_params($options),
            'text'   => __('Contracts where notice begins in less than 7 days'),
            'count'  => $contractpre7
        ];

        $options['criteria'][0]['value'] = '>6';
        $options['criteria'][1]['value'] = '<30';
        $twig_params['items'][] = [
            'link'   => $CFG_GLPI["root_doc"] . "/front/contract.php?" . Toolbox::append_params($options),
            'text'   => __('Contracts where notice begins in less than 30 days'),
            'count'  => $contractpre30
        ];

        $output = TemplateRenderer::getInstance()->render('central/lists/itemtype_count.html.twig', $twig_params);
        if ($display) {
            echo $output;
        } else {
            return $output;
        }
    }


    /**
     * Get the entreprise name  for the contract
     *
     *@return string of names (HTML)
     **/
    public function getSuppliersNames()
    {
        /** @var \DBmysql $DB */
        global $DB;

        $iterator = $DB->request([
            'SELECT'       => 'glpi_suppliers.id',
            'FROM'         => 'glpi_suppliers',
            'INNER JOIN'   => [
                'glpi_contracts_suppliers' => [
                    'ON' => [
                        'glpi_contracts_suppliers' => 'suppliers_id',
                        'glpi_suppliers'           => 'id'
                    ]
                ]
            ],
            'WHERE'        => ['contracts_id' => $this->fields['id']]
        ]);
        $out    = "";
        foreach ($iterator as $data) {
            $out .= Dropdown::getDropdownName("glpi_suppliers", $data['id']) . "<br>";
        }
        return $out;
    }


    public static function cronInfo($name)
    {
        return ['description' => __('Send alarms on contracts')];
    }


    /**
     * Cron action on contracts : alert depending of the config : on notice and expire
     *
     * @param CronTask $task CronTask for log, if NULL display (default NULL)
     *
     * @return integer
     **/
    public static function cronContract(CronTask $task = null)
    {
        /**
         * @var array $CFG_GLPI
         * @var \DBmysql $DB
         */
        global $CFG_GLPI, $DB;

        if (!$CFG_GLPI["use_notifications"]) {
            return 0;
        }

        $message       = [];
        $cron_status   = 0;

        $contract_infos    = [
            Alert::END    => [],
            Alert::NOTICE => [],
        ];
        $contract_messages = [];

        foreach (Entity::getEntitiesToNotify('use_contracts_alert') as $entity => $value) {
            $before       = Entity::getUsedConfig('send_contracts_alert_before_delay', $entity);

            $query_notice = [
                'SELECT'    => [
                    'glpi_contracts.*',
                ],
                'FROM'      => self::getTable(),
                'LEFT JOIN' => [
                    'glpi_alerts' => [
                        'FKEY' => [
                            'glpi_alerts'    => 'items_id',
                            'glpi_contracts' => 'id',
                            [
                                'AND' => [
                                    'glpi_alerts.itemtype' => 'Contract',
                                    'glpi_alerts.type'     => Alert::NOTICE,
                                ],
                            ],
                        ]
                    ]
                ],
                'WHERE'     => [
                    [
                        'RAW' => [
                            DBmysql::quoteName('glpi_contracts.alert') . ' & ' . pow(2, Alert::NOTICE) => ['>', 0]
                        ]
                    ],
                    'glpi_alerts.date'           => null,
                    'glpi_contracts.is_deleted'  => 0,
                    [
                        'NOT' => ['glpi_contracts.begin_date' => null],
                    ],
                    'glpi_contracts.duration'    => ['!=', 0],
                    'glpi_contracts.notice'      => ['!=', 0],
                    'glpi_contracts.entities_id' => $entity,
                    [
                        'RAW' => [
                            'DATEDIFF(
                         ADDDATE(
                            ' . DBmysql::quoteName('glpi_contracts.begin_date') . ',
                            INTERVAL ' . DBmysql::quoteName('glpi_contracts.duration') . ' MONTH
                         ),
                         CURDATE()
                      )' => ['>', 0]
                        ]
                    ],
                    [
                        'RAW' => [
                            'DATEDIFF(
                         ADDDATE(
                            ' . DBmysql::quoteName('glpi_contracts.begin_date') . ',
                            INTERVAL (
                               ' . DBmysql::quoteName('glpi_contracts.duration') . '
                               - ' . DBmysql::quoteName('glpi_contracts.notice') . '
                            ) MONTH
                         ),
                         CURDATE()
                      )' => ['<', $before]
                        ]
                    ],
                ],
            ];

            $query_end = [
                'SELECT'    => [
                    'glpi_contracts.*',
                ],
                'FROM'      => self::getTable(),
                'LEFT JOIN' => [
                    'glpi_alerts' => [
                        'FKEY' => [
                            'glpi_alerts'    => 'items_id',
                            'glpi_contracts' => 'id',
                            [
                                'AND' => [
                                    'glpi_alerts.itemtype' => 'Contract',
                                    'glpi_alerts.type'     => Alert::END,
                                ],
                            ],
                        ]
                    ]
                ],
                'WHERE'     => [
                    [
                        'RAW' => [
                            DBmysql::quoteName('glpi_contracts.alert') . ' & ' . pow(2, Alert::END) => ['>', 0]
                        ]
                    ],
                    'glpi_alerts.date'           => null,
                    'glpi_contracts.is_deleted'  => 0,
                    [
                        'NOT' => ['glpi_contracts.begin_date' => null],
                    ],
                    'glpi_contracts.duration'    => ['!=', 0],
                    'glpi_contracts.entities_id' => $entity,
                    [
                        'RAW' => [
                            'DATEDIFF(
                         ADDDATE(
                            ' . DBmysql::quoteName('glpi_contracts.begin_date') . ',
                            INTERVAL ' . DBmysql::quoteName('glpi_contracts.duration') . ' MONTH
                         ),
                         CURDATE()
                      )' => ['<', $before]
                        ]
                    ],
                ],
            ];

            $querys = ['notice' => $query_notice,
                'end'    => $query_end
            ];

            foreach ($querys as $type => $query) {
                $result = $DB->request($query);
                foreach ($result as $data) {
                    $entity  = $data['entities_id'];

                    $message = sprintf(
                        __('%1$s: %2$s') . "<br>\n",
                        $data["name"],
                        Infocom::getWarrantyExpir(
                            $data["begin_date"],
                            $data["duration"],
                            $data["notice"]
                        )
                    );
                    $data['items']      = Contract_Item::getItemsForContract($data['id'], $entity);
                    $contract_infos[$type][$entity][$data['id']] = $data;

                    if (!isset($contract_messages[$type][$entity])) {
                        switch ($type) {
                            case 'notice':
                                $contract_messages[$type][$entity] = __('Contract entered in notice time') .
                                                            "<br>";
                                break;

                            case 'end':
                                 $contract_messages[$type][$entity] = __('Contract ended') . "<br>";
                                break;
                        }
                    }
                    $contract_messages[$type][$entity] .= $message;
                }
            }

           // Get contrats with periodicity alerts
            $valPow = pow(2, Alert::PERIODICITY);
            $query_periodicity = ['FROM' => 'glpi_contracts',
                'WHERE' => ['alert' => ['&', $valPow],
                    'entities_id' => $entity,
                    'is_deleted' => 0
                ]
            ];

           // Foreach ones :
            foreach ($DB->request($query_periodicity) as $data) {
                $entity = $data['entities_id'];

               // For contracts with begin date and periodicity
                if (!empty($data['begin_date']) && $data['periodicity']) {
                    $todo = ['periodicity' => Alert::PERIODICITY];
                    if ($data['alert'] & pow(2, Alert::NOTICE)) {
                        $todo['periodicitynotice'] = Alert::NOTICE;
                    }

                   // For the todo...
                    foreach ($todo as $type => $event) {
                        /**
                         * Previous alert
                         */
                       // Get previous alerts from DB
                        $previous_alert = [
                            $type => Alert::getAlertDate(__CLASS__, $data['id'], $event),
                        ];
                       // If alert never occurs...
                        if (empty($previous_alert[$type])) {
                           // We define it a long time ago [in a galaxy far, far away... ;-)]
                            $previous_alert[$type] = date('Y-m-d', 0);
                        }

                        /**
                         * Next alert
                         */
                       // Computation of first alert : Contract [begin date + initial duration] - Config [alert xxx days before]
                        $initial_duration = $data['duration'] != 0 ? $data['duration'] : $data['periodicity'];
                        $next_alert = [
                            $type => date('Y-m-d', strtotime($data['begin_date'] . " +" . $initial_duration . " month -" . ($before) . " day")),
                        ];
                       // If a notice is defined
                        if ($event == Alert::NOTICE) {
                           // Will decrease of the Contract notice duration
                            $next_alert[$type] = date('Y-m-d', strtotime($next_alert[$type] . " -" . ($data['notice']) . " month"));
                        }

                      // Computation of contract renewal
                        while ($next_alert[$type] < $previous_alert[$type]) {
                           // Increasing of Contract periodicity...
                            $next_alert[$type] = date('Y-m-d', strtotime($next_alert[$type] . " +" . ($data['periodicity']) . " month"));
                        }

                      // If this date is passed : clean alerts and send again
                        if ($next_alert[$type] <= date('Y-m-d')) {
                            $alert = new Alert();
                            $alert->clear(__CLASS__, $data['id'], $event);
                           // Computation of the real date => add Config [alert xxx days before]
                            $real_alert_date = date('Y-m-d', strtotime($next_alert[$type] . " +" . ($before) . " day"));
                            $message = sprintf(__('%1$s: %2$s') . "<br>\n", $data["name"], Html::convDate($real_alert_date));
                            $data['alert_date'] = $real_alert_date;
                            $contract_infos[$type][$entity][$data['id']] = $data;

                            switch ($type) {
                                case 'periodicitynotice':
                                      $contract_messages[$type][$entity] = __('Contract entered in notice time for period') . "<br>";
                                    break;

                                case 'periodicity':
                                    $contract_messages[$type][$entity] = __('Contract period ended') . "<br>";
                                    break;
                            }
                            $contract_messages[$type][$entity] .= $message;
                        }
                    }
                }
            }
        }
        foreach (
            ['notice'            => Alert::NOTICE,
                'end'               => Alert::END,
                'periodicity'       => Alert::PERIODICITY,
                'periodicitynotice' => Alert::NOTICE
            ] as $event => $type
        ) {
            if (isset($contract_infos[$event]) && count($contract_infos[$event])) {
                foreach ($contract_infos[$event] as $entity => $contracts) {
                    if (
                        NotificationEvent::raiseEvent(
                            $event,
                            new self(),
                            ['entities_id' => $entity,
                                'items'       => $contracts
                            ]
                        )
                    ) {
                        $message     = $contract_messages[$event][$entity];
                        $cron_status = 1;
                        $entityname  = Dropdown::getDropdownName("glpi_entities", $entity);
                        if ($task) {
                            $task->log(sprintf(__('%1$s: %2$s') . "\n", $entityname, $message));
                            $task->addVolume(1);
                        } else {
                            Session::addMessageAfterRedirect(sprintf(
                                __('%1$s: %2$s'),
                                $entityname,
                                $message
                            ));
                        }

                        $alert = new Alert();
                        $input = [
                            'itemtype' => __CLASS__,
                            'type'     => $type,
                        ];
                        foreach ($contracts as $id => $contract) {
                            $input["items_id"] = $id;

                            $alert->add($input);
                            unset($alert->fields['id']);
                        }
                    } else {
                        $entityname = Dropdown::getDropdownName('glpi_entities', $entity);
                     //TRANS: %1$s is entity name, %2$s is the message
                        $msg = sprintf(__('%1$s: %2$s'), $entityname, __('send contract alert failed'));
                        if ($task) {
                            $task->log($msg);
                        } else {
                            Session::addMessageAfterRedirect($msg, false, ERROR);
                        }
                    }
                }
            }
        }

        return $cron_status;
    }


    /**
     * Print a select with contracts
     *
     * Print a select named $name with contracts options and selected value $value
     * @param array $options
     *    - name          : string / name of the select (default is contracts_id)
     *    - value         : integer / preselected value (default 0)
     *    - entity        : integer or array / restrict to a defined entity or array of entities
     *                      (default -1 : no restriction)
     *    - rand          : (defauolt mt_rand)
     *    - entity_sons   : boolean / if entity restrict specified auto select its sons
     *                      only available if entity is a single value not an array (default false)
     *    - used          : array / Already used items ID: not to display in dropdown (default empty)
     *    - nochecklimit  : boolean / disable limit for nomber of device (for supplier, default false)
     *    - on_change     : string / value to transmit to "onChange"
     *    - display       : boolean / display or return string (default true)
     *    - expired       : boolean / display expired contract (default false)
     *    - toadd         : array / array of specific values to add at the beginning
     *    - hide_if_no_elements  : boolean / hide dropdown if there is no elements (default false)
     *
     * @return string|integer HTML output, or random part of dropdown ID.
     **/
    public static function dropdown($options = [])
    {
        /** @var \DBmysql $DB */
        global $DB;

       //$name,$entity_restrict=-1,$alreadyused=array(),$nochecklimit=false
        $p = [
            'name'           => 'contracts_id',
            'value'          => '',
            'entity'         => '',
            'rand'           => mt_rand(),
            'entity_sons'    => false,
            'used'           => [],
            'nochecklimit'   => false,
            'on_change'      => '',
            'display'        => true,
            'expired'        => false,
            'toadd'          => [],
            'class'          => "form-select",
            'width'          => "",
            'hide_if_no_elements' => false,
        ];

        if (is_array($options) && count($options)) {
            foreach ($options as $key => $val) {
                $p[$key] = $val;
            }
        }

        if (
            !($p['entity'] < 0)
            && $p['entity_sons']
        ) {
            if (is_array($p['entity'])) {
               // no translation needed (only for dev)
                echo "entity_sons options is not available with array of entity";
            } else {
                $p['entity'] = getSonsOf('glpi_entities', $p['entity']);
            }
        }

        $WHERE = [];
        if ($p['entity'] >= 0) {
            $WHERE = $WHERE + getEntitiesRestrictCriteria('glpi_contracts', 'entities_id', $p['entity'], true);
        }
        if (count($p['used'])) {
            $WHERE['NOT'] = ['glpi_contracts.id' => $p['used']];
        }
        if (!$p['expired']) {
            $WHERE[] = self::getExpiredCriteria();
        }

        $iterator = $DB->request([
            'SELECT'    => 'glpi_contracts.*',
            'FROM'      => 'glpi_contracts',
            'LEFT JOIN' => [
                'glpi_entities'   => [
                    'ON' => [
                        'glpi_contracts'  => 'entities_id',
                        'glpi_entities'   => 'id'
                    ]
                ]
            ],
            'WHERE'     => array_merge([
                'glpi_contracts.is_deleted'   => 0,
                'glpi_contracts.is_template'  => 0
            ], $WHERE),
            'ORDERBY'   => [
                'glpi_entities.completename',
                'glpi_contracts.name ASC',
                'glpi_contracts.begin_date DESC'
            ]
        ]);

        if ($p['hide_if_no_elements'] && $iterator->count() === 0) {
            return;
        }

        $group  = '';
        $prev   = -1;
        $values = $p['toadd'];
        foreach ($iterator as $data) {
            if (
                $p['nochecklimit']
                || ($data["max_links_allowed"] == 0)
                || ($data["max_links_allowed"] > countElementsInTable(
                    'glpi_contracts_items',
                    ['contracts_id' => $data['id']]
                ))
            ) {
                if ($data["entities_id"] != $prev) {
                    $group = Dropdown::getDropdownName("glpi_entities", $data["entities_id"]);
                    $prev = $data["entities_id"];
                }

                $name = $data["name"];
                if (
                    $_SESSION["glpiis_ids_visible"]
                    || empty($data["name"])
                ) {
                    $name = sprintf(__('%1$s (%2$s)'), $name, $data["id"]);
                }

                $tmp = sprintf(__('%1$s - %2$s'), $name, $data["num"]);
                $tmp = sprintf(__('%1$s - %2$s'), $tmp, Html::convDateTime($data["begin_date"]));
                $values[$group][$data['id']] = $tmp;
            }
        }
        return Dropdown::showFromArray($p['name'], $values, [
            'value'               => $p['value'],
            'on_change'           => $p['on_change'],
            'display'             => $p['display'],
            'display_emptychoice' => true,
            'class'               => $p['class'],
            'width'               => $p['width'],
        ]);
    }


    /**
     * Print a select with contract renewal
     *
     * Print a select named $name with contract renewal options and selected value $value
     *
     * @param string  $name    HTML select name
     * @param integer $value   HTML select selected value (default = 0)
     * @param boolean $display get or display string ? (true by default)
     *
     * @return string|integer HTML output, or random part of dropdown ID.
     **/
    public static function dropdownContractRenewal($name, $value = 0, $display = true)
    {

        $values = [
            self::RENEWAL_NEVER => __('Never'),
            self::RENEWAL_TACIT => __('Tacit'),
            self::RENEWAL_EXPRESS => __('Express'),
        ];
        return Dropdown::showFromArray($name, $values, ['value'   => $value,
            'display' => $display
        ]);
    }


    /**
     * Get the renewal type name
     *
     * @param $value integer   HTML select selected value
     *
     * @return string
     **/
    public static function getContractRenewalName($value)
    {

        switch ($value) {
            case 0:
                return __('Never');

            case 1:
                return __('Tacit');

            case 2:
                return __('Express');

            default:
                return "";
        }
    }


    /**
     * Get renewal ID by name
     *
     * @param string $value the name of the renewal
     *
     * @return integer ID of the renewal
     **/
    public static function getContractRenewalIDByName($value)
    {

        if (stristr($value, __('Tacit'))) {
            return 1;
        }
        if (stristr($value, __('Express'))) {
            return 2;
        }
        return 0;
    }


    /**
     * @param array $options
     *
     * @return string|integer HTML output, or random part of dropdown ID.
     **/
    public static function dropdownAlert(array $options)
    {

        $p = [
            'name'           => 'alert',
            'value'          => 0,
            'display'        => true,
            'inherit_parent' => false,
        ];

        if (count($options)) {
            foreach ($options as $key => $val) {
                $p[$key] = $val;
            }
        }

        $tab = [];
        if ($p['inherit_parent']) {
            $tab[Entity::CONFIG_PARENT] = __('Inheritance of the parent entity');
        }

        $tab += self::getAlertName();

        return Dropdown::showFromArray($p['name'], $tab, $p);
    }


    /**
     * Get the possible value for contract alert
     *
     * @since 0.83
     *
     * @param string|integer|null $val if not set, ask for all values, else for 1 value (default NULL)
     *
     * @return string|string[]
     **/
    public static function getAlertName($val = null)
    {

        $names = [
            0                                                  => Dropdown::EMPTY_VALUE,
            pow(2, Alert::END)                                 => __('End'),
            pow(2, Alert::NOTICE)                              => __('Notice'),
            (pow(2, Alert::END) + pow(2, Alert::NOTICE))       => __('End + Notice'),
            pow(2, Alert::PERIODICITY)                         => __('Period end'),
            pow(2, Alert::PERIODICITY) + pow(2, Alert::NOTICE) => __('Period end + Notice'),
        ];

        if (is_null($val)) {
            return $names;
        }
       // Default value for display
        $names[0] = ' ';

        if (isset($names[$val])) {
            return $names[$val];
        }
       // If not set and is a string return value
        if (is_string($val)) {
            return $val;
        }
        return NOT_AVAILABLE;
    }


    /**
     * Display debug information for current object
     **/
    public function showDebug()
    {

        $options = [
            'entities_id' => $this->getEntityID(),
            'contracts'   => [],
            'items'       => [],
        ];
        NotificationEvent::debugEvent($this, $options);
    }


    public function getUnallowedFieldsForUnicity()
    {

        return array_merge(
            parent::getUnallowedFieldsForUnicity(),
            ['begin_date', 'duration', 'entities_id', 'sunday_begin_hour',
                'sunday_end_hour', 'saturday_begin_hour', 'saturday_end_hour',
                'week_begin_hour',
                'week_end_hour'
            ]
        );
    }


    public static function getMassiveActionsForItemtype(
        array &$actions,
        $itemtype,
        $is_deleted = false,
        CommonDBTM $checkitem = null
    ) {
        /** @var array $CFG_GLPI */
        global $CFG_GLPI;

        if (in_array($itemtype, $CFG_GLPI["contract_types"])) {
            if (self::canUpdate()) {
                $action_prefix                    = 'Contract_Item' . MassiveAction::CLASS_ACTION_SEPARATOR;
                $actions[$action_prefix . 'add']    = "<i class='fa-fw " . self::getIcon() . "'></i>" .
                                                _x('button', 'Add a contract');
                $actions[$action_prefix . 'remove'] = _x('button', 'Remove a contract');
            }
        }
    }

    /**
     * @param integer $output_type Output type
     * @param string  $mass_id     id of the form to check all
     */
    public static function commonListHeader(
        $output_type = Search::HTML_OUTPUT,
        $mass_id = '',
        array $params = []
    ) {
        echo Search::showNewLine($output_type);
        $header_num = 1;

        $items = [];
        $items[(empty($mass_id) ? '&nbsp' : Html::getCheckAllAsCheckbox($mass_id))] = '';
        $items[__('Name')] = "name";
        $items[Entity::getTypeName(1)] = "entities_id";
        $items[_n('Type', 'Types', 1)] = ContractType::getForeignKeyField();
        $items[_x('phone', 'Number')] = "num";
        $items[__('Start date')] = "begin_date";
        $items[__('End date')] = "end_date";
        $items[__('Comments')] = "comment";

        foreach (array_keys($items) as $key) {
            $link   = "";
            echo Search::showHeaderItem($output_type, $key, $header_num, $link);
        }
       // End Line for column headers
        echo Search::showEndLine($output_type);
    }

    /**
     * Display a line for an object
     *
     * @param $id                 Integer  ID of the object
     * @param $options            array of options
     *      output_type            : Default output type (see Search class / default Search::HTML_OUTPUT)
     *      row_num                : row num used for display
     *      type_for_massiveaction : itemtype for massive action
     *      id_for_massaction      : default 0 means no massive action
     *      followups              : show followup columns
     */
    public static function showShort($id, $options = [])
    {
        $p = [
            'output_type'            => Search::HTML_OUTPUT,
            'row_num'                => 0,
            'type_for_massiveaction' => 0,
            'id_for_massiveaction'   => 0,
        ];

        if (count($options)) {
            foreach ($options as $key => $val) {
                $p[$key] = $val;
            }
        }

        $item = new self();
        $align = "class='left'";

        $candelete = self::canDelete();
        $canupdate = self::canUpdate();

        if ($item->getFromDB($id)) {
            $item_num = 1;
            echo Search::showNewLine($p['output_type'], $p['row_num'] % 2, $item->isDeleted());

            $check_col = '';
            if (($candelete || $canupdate) && ($p['output_type'] == Search::HTML_OUTPUT) && $p['id_for_massiveaction']) {
                $check_col = Html::getMassiveActionCheckBox($p['type_for_massiveaction'], $p['id_for_massiveaction']);
            }
            echo Search::showItem($p['output_type'], $check_col, $item_num, $p['row_num'], $align);

            $name = $item->getLink();
            echo Search::showItem($p['output_type'], $name, $item_num, $p['row_num'], $align);

            $entity = Dropdown::getDropdownName(Entity::getTable(), $item->fields[Entity::getForeignKeyField()]);
            echo Search::showItem($p['output_type'], $entity, $item_num, $p['row_num'], $align);

            $type = Dropdown::getDropdownName(ContractType::getTable(), $item->fields[ContractType::getForeignKeyField()]);
            echo Search::showItem($p['output_type'], $type, $item_num, $p['row_num'], $align);

            $num = $item->fields['num'];
            echo Search::showItem($p['output_type'], $num, $item_num, $p['row_num'], $align);

            $start_date = Html::convDate($item->fields['begin_date']);
            echo Search::showItem($p['output_type'], $start_date, $item_num, $p['row_num'], $align);

            $end_date = Infocom::getWarrantyExpir($item->fields['begin_date'], $item->fields['duration'], 0, true);
            echo Search::showItem($p['output_type'], $end_date, $item_num, $p['row_num'], $align);

            $comment = $item->fields['comment'];
            echo Search::showItem($p['output_type'], $comment, $item_num, $p['row_num'], $align);
        } else {
            echo "<tr class='tab_bg_2'>";
            echo "<td colspan='6' ><i>" . __('No item.') . "</i></td></tr>";
        }
    }

    public static function getIcon()
    {
        return "ti ti-writing-sign";
    }

    /**
     * @FIXME Rename method in GLPI 10.1. Method returns criteria to find NOT expired contracts.
     */
    public static function getExpiredCriteria()
    {
        /** @var \DBmysql $DB */
        global $DB;

        return ['OR' => [
            'glpi_contracts.renewal' => 1,
            new \QueryExpression('DATEDIFF(ADDDATE(' . $DB->quoteName('glpi_contracts.begin_date') . ', INTERVAL ' . $DB->quoteName('glpi_contracts.duration') . ' MONTH), CURDATE()) > 0'),
        ]
        ];
    }
}
