<?php

/**
 * Project: 
 * Contenido Content Management System
 * 
 * Description: 
 * Workflow items
 * 
 * Requirements: 
 * @con_php_req 5.0
 * 
 *
 * @package    Contenido Backend classes
 * @version    1.3
 * @author     Timo Hummel
 * @copyright  four for business AG <www.4fb.de>
 * @license    http://www.contenido.org/license/LIZENZ.txt
 * @link       http://www.4fb.de
 * @link       http://www.contenido.org
 * 
 * {@internal 
 *   created 2003-07-18
 *   
 *   $Id: class.workflowitems.php 128 2019-07-03 11:58:28Z oldperl $
 * }}
 * 
 */
if (!defined('CON_FRAMEWORK')) {
    die('Illegal call');
}

/**
 * Class WorkflowItems
 * Class for workflow item management
 * @author Timo A. Hummel <Timo.Hummel@4fb.de>
 * @version 0.2
 * @copyright four for business 2003
 */
class WorkflowItems extends ItemCollection {

    /**
     * Constructor Function
     * @param string $table The table to use as information source
     */
    function __construct() {
        global $cfg;
        parent::__construct($cfg["tab"]["workflow_items"], "idworkflowitem");
        $this->_setItemClass("WorkflowItem");
    }

    /** @deprecated  [2011-03-15] Old constructor function for downwards compatibility */
    function WorkflowItems() {
        cWarning(__FILE__, __LINE__, "Deprecated method call, use __construct()");
        $this->__construct();
    }

    function delete($id) {
        global $cfg;
        $item = new WorkflowItem;
        $item->loadByPrimaryKey($id);
        $pos = $item->get("position");
        $idworkflow = $item->get("idworkflow");
        $oDb = new DB_ConLite();

        $this->select("position > $pos AND idworkflow = '" . Contenido_Security::escapeDB($idworkflow, $oDb) . "'");
        while ($obj = $this->next()) {
            $obj->setPosition($obj->get("position") - 1);
            $obj->store();
        }

        $aUserSequencesDelete = array();
        $sSql = 'SELECT idusersequence FROM ' . $cfg["tab"]["workflow_user_sequences"] . ' WHERE idworkflowitem = ' . $id . ';';
        $oDb->query($sSql);
        while ($oDb->next_record()) {
            array_push($aUserSequencesDelete, Contenido_Security::escapeDB($oDb->f('idusersequence'), $oDb));
        }

        $sSql = 'DELETE FROM ' . $cfg["tab"]["workflow_actions"] . ' WHERE idworkflowitem = ' . Contenido_Security::escapeDB($id, $oDb) . ';';
        $oDb->query($sSql);

        $this->updateArtAllocation($id, 1);

        if (count($aUserSequencesDelete) > 0) {
            $sSql = 'DELETE FROM ' . $cfg["tab"]["workflow_user_sequences"] . ' WHERE idusersequence in (' . implode(',', $aUserSequencesDelete) . ');';
            $oDb->query($sSql);
        }
    }

    function updateArtAllocation($idworkflowitem, $delete = false) {
        global $idworkflow, $cfg;
        $oDb = new DB_ConLite();

        $aUserSequences = array();
        $sSql = 'SELECT idusersequence FROM ' . $cfg["tab"]["workflow_user_sequences"] . ' WHERE idworkflowitem = ' . Contenido_Security::escapeDB($idworkflowitem, $oDb) . ';';

        $oDb->query($sSql);
        while ($oDb->next_record()) {
            array_push($aUserSequences, Contenido_Security::escapeDB($oDb->f('idusersequence'), $oDb));
        }

        $aIdArtLang = array();
        if (count($aUserSequences) > 0) {
            $sSql = 'SELECT idartlang FROM ' . $cfg["tab"]["workflow_art_allocation"] . ' WHERE idusersequence in (' . implode(',', $aUserSequences) . ');';
            $oDb->query($sSql);
            while ($oDb->next_record()) {
                array_push($aIdArtLang, $oDb->f('idartlang'));
            }
            $sSql = 'DELETE FROM ' . $cfg["tab"]["workflow_art_allocation"] . ' WHERE idusersequence in (' . implode(',', $aUserSequences) . ');';
            $oDb->query($sSql);
        }

        if ($delete) {
            parent::delete($idworkflowitem);
        }

        foreach ($aIdArtLang as $iIdArtLang) {
            setUserSequence($iIdArtLang, $idworkflow);
        }
    }

    function swap($idworkflow, $pos1, $pos2) {
        $this->select("idworkflow = '$idworkflow' AND position = '$pos1'");
        if (($item = $this->next()) === false) {
            $this->lasterror = i18n("Swapping items failed: Item doesn't exist", "workflow");
            return false;
        }

        $pos1ID = $item->getField("idworkflowitem");

        $this->select("idworkflow = '$idworkflow' AND position = '$pos2'");
        if (($item = $this->next()) === false) {
            $this->lasterror = i18n("Swapping items failed: Item doesn't exist", "workflow");
            return false;
        }

        $pos2ID = $item->getField("idworkflowitem");

        $item = new WorkflowItem();
        $item->loadByPrimaryKey($pos1ID);
        $item->setPosition($pos2);
        $item->store();
        $item->loadByPrimaryKey($pos2ID);
        $item->setPosition($pos1);
        $item->store();

        $this->updateArtAllocation($pos1ID);
        $this->updateArtAllocation($pos2ID);
        return (true);
    }

    function create($idworkflow) {
        $workflows = new Workflows;

        $workflows->select("idworkflow = '$idworkflow'");

        if ($workflows->next() === false) {
            $this->lasterror = i18n("Can't add item to workflow: Workflow doesn't exist", "workflow");
            return false;
        }

        $this->select("idworkflow = '$idworkflow'", "", "position DESC", "1");

        $item = $this->next();

        if ($item === false) {
            $lastPos = 1;
        } else {
            $lastPos = $item->getField("position") + 1;
        }

        $newItem = parent::createNewItem();
        if ($newItem->init($idworkflow, $lastPos) === false) {
            $this->delete($newItem->getField("idworkflowitem"));
            $this->lasterror = $newItem->lasterror;
            return false;
        }

        if ($item === false) {
            $this->updateArtAllocation(0);
        }

        return ($newItem);
    }

}

/**
 * Class WorkflowItem
 * Class for a single workflow item
 * @author Timo A. Hummel <Timo.Hummel@4fb.de>
 * @version 0.1
 * @copyright four for business 2003
 */
class WorkflowItem extends Item {

    /**
     * Constructor Function
     * @param string $table The table to use as information source
     */
    function __construct() {
        global $cfg;

        parent::__construct($cfg["tab"]["workflow_items"], "idworkflowitem");
    }

    /** @deprecated  [2011-03-15] Old constructor function for downwards compatibility */
    function WorkflowItem() {
        cWarning(__FILE__, __LINE__, "Deprecated method call, use __construct()");
        $this->__construct();
    }

    function getStepRights() {
        $idwfi = $this->values["idworkflowitem"];
        $workflowActions = new WorkflowActions;

        $actions = WorkflowActions::getAvailableWorkflowActions();

        foreach ($actions as $key => $value) {
            $rights[$key] = $workflowActions->get($idwfi, $key);
        }

        return $rights;
    }

    /**
     * Overridden setField function.
     * @param string $field Void field since we override the usual setField function
     * @param string $value Void field since we override the usual setField function
     */
    function setField($field, $value, $bSafe = TRUE) {
        if ($this->virgin == true) {
            $this->lasterror = i18n("No item loaded", "workflow");
            return false;
        }

        if ($field == "idsequence") {
            die("You can't set the idsequence field using this method. Use 'create' in the WorkflowItems class.");
        }

        if ($field == "idworkflow") {
            die("You can't set the workflow ID using this method. Use 'create' in the WorkflowItems class!");
        }

        if ($field == "position") {
            die("You can't set the position ID using this method. Use 'create' or 'swap' to create or move items!");
        }

        if ($field == "idtask" && $value != 0) {
            $taskCollection = new WorkflowTasks;
            $taskCollection->select("idtask = '$value'");
            if ($taskCollection->next() === false) {
                $this->lasterror = i18n("Requested task doesn't exist, can't assign", "workflow");
                return false;
            }
        }

        parent::setField($field, $value, $bSafe);
    }

    /**
     * init initializes a new wf_items entry. Should
     * only be called by the create function.
     * @param int $idworkflow The workflow to set the item to
     */
    function init($idworkflow, $idposition) {
        global $cfg;

        $workflows = new Workflows;

        $workflows->select("idworkflow = '$idworkflow'");

        if ($workflows->next() === false) {
            $this->lasterror = i18n("Workflow doesn't exist", "workflow");
            return false;
        }

        $workflowItems = new WorkflowItems;
        $workflowItems->select("position = '$idposition' AND idworkflow = '$idworkflow'");
        if ($workflowItems->next()) {
            $this->lasterror = i18n("Position in this workflow already exists.", "workflow");
            return false;
        }

        parent::setField("idworkflow", $idworkflow);
        parent::setField("position", $idposition);
        parent::store();
        return true;
    }

    /**
     * setPosition Sets the position for an item. Should only be 
     * called by the "swap" function
     * @param int $idposition The new position ID
     */
    function setPosition($idposition) {
        parent::setField("position", $idposition);
        parent::store();
        return true;
    }

}

?>