opensupports/server/controllers/system/delete-department.php

<?php
use Respect\Validation\Validator as DataValidator;
DataValidator::with('CustomValidations', true);

/**
 * @api {post} /system/delete-department Delete department
 * @apiVersion 4.7.0
 *
 * @apiName Delete department
 *
 * @apiGroup System
 *
 * @apiDescription This path deletes a department.
 *
 * @apiPermission staff3
 *
 * @apiParam {Number} departmentId Id of the department to be deleted.
 * @apiParam {Number} transferDepartmentId Id of the department where the tickets will be transfer to.
 *
 * @apiUse NO_PERMISSION
 * @apiUse INVALID_DEPARTMENT
 * @apiUse SAME_DEPARTMENT
 *
 * @apiSuccess {Object} data Empty object
 *
 */

class DeleteDepartmentController extends Controller {
    const PATH = '/delete-department';
    const METHOD = 'POST';

    private $departmentId;
    private $transferDepartmentId;

    public function validations() {
        return [
            'permission' => 'staff_3',
            'requestData' => [
                'departmentId' => [
                    'validation' => DataValidator::dataStoreId('department'),
                    'error' => ERRORS::INVALID_DEPARTMENT
                ],
                'transferDepartmentId' => [
                    'validation' => DataValidator::dataStoreId('department'),
                    'error' => ERRORS::INVALID_DEPARTMENT
                ]
            ]
        ];
    }

    public function handler() {
        
        $this->departmentId = Controller::request('departmentId');
        $this->transferDepartmentId = Controller::request('transferDepartmentId');
        
        $this->checkDepartmentIdDefault();

        if ($this->departmentId === $this->transferDepartmentId) {
            throw new RequestException(ERRORS::SAME_DEPARTMENT);
        }

        $departmentToTransfer = Department::getDataStore($this->transferDepartmentId);
        $departmentInstance = Department::getDataStore($this->departmentId);

        if($departmentToTransfer->private && Ticket::count(' author_id IS NOT NULL AND department_id = ? ', [$departmentInstance->id])) {
            throw new RequestException(ERRORS::DEPARTMENT_PRIVATE_TICKETS);
        }

        $this->transferDepartmentTickets();
        $departmentInstance->delete();

        Log::createLog('DELETE_DEPARTMENT', $departmentInstance->name);

        Response::respondSuccess();
    }

    public function transferDepartmentTickets() {
        $tickets = Ticket::find('department_id = ?', [$this->departmentId]);
        $newDepartment = Department::getDataStore($this->transferDepartmentId);

        foreach($tickets as $ticket) {
            $staffOwner = $ticket->owner;

            if($staffOwner) {
                $hasDepartment = false;

                foreach($staffOwner->sharedDepartmentList as $department) {
                    if($department->id === $newDepartment->id) {
                        $hasDepartment = true;
                    }
                }

                if(!$hasDepartment) {
                    $staffOwner->sharedTicketList->remove($ticket);
                    $staffOwner->store();

                    $ticket->owner = null;
                    $ticket->unread = true;

                    $event = Ticketevent::getEvent(Ticketevent::UN_ASSIGN);
                    $event->setProperties(array(
                        'authorStaff' => $staffOwner,
                        'date' => Date::getCurrentDate()
                    ));

                    $ticket->addEvent($event);
                }
            }

            $ticket->department = $newDepartment;
            $ticket->store();
        }
    }
    public function checkDepartmentIdDefault() {
        $defaultDepartment = Setting::getSetting('default-department-id');

        if ($defaultDepartment && $this->departmentId == $defaultDepartment->value) throw new Exception(ERRORS::CAN_NOT_DELETE_DEFAULT_DEPARTMENT);
    }
}