oms-Workflow/Templates/Permission/Workflow.php

<?php
/**
 * Karaka
 *
 * PHP Version 8.0
 *
 * @package   Modules\Workflow
 * @copyright Dennis Eichhorn
 * @license   OMS License 1.0
 * @version   1.0.0
 * @link      https://karaka.app
 */
declare(strict_types=1);

namespace Modules\Workflow\Templates\Permission;

use Modules\Workflow\Models\WorkflowInterface;
use phpOMS\DataStorage\Database\Connection\ConnectionAbstract;

/**
 * Workflow class.
 *
 * @package Modules\Workflow
 * @license OMS License 1.0
 * @link    https://karaka.app
 * @since   1.0.0
 */
class Workflow implements WorkflowInterface
{
    private $id = 0;

    private $state = 0;

    private $con = null;

    /**
     * Constructor.
     *
     * @param ConnectionAbstract $con Database connection
     *
     * @since 1.0.0
     */
    public function __construct(ConnectionAbstract $con)
    {
        $this->con = $con;
    }

    /**
     * Execute the workflow
     *
     * @return int
     *
     * @since 1.0.0
     */
    public function run($data) : int
    {
        switch ($this->state) {
            case States::DEFAULT:
                $this->state = $this->runRequest($data);
                break;
            case States::PENDING:
                $this->state = $this->runPending($data);
                break;
            default:
        }

        return $this->state;
    }

    /**
     * Run tasks during the request
     *
     * @return int
     *
     * @since 1.0.0
     */
    public function runRequest($data) : int
    {
        // create workflow
        // create task
        // set state

        return 0;
    }

    /**
     * Run tasks after the status change from pending
     *
     * The next status could be a new request, an approval or dismissal
     *
     * @return int
     *
     * @since 1.0.0
     */
    public function runPending($data) : int
    {
        // approve?!

        return 0;
    }

    /**
     * Get the state of the workflow
     *
     * @return int
     *
     * @since 1.0.0
     */
    public function getState() : int
    {
        return $this->state;
    }
}