<?php
/**
 * AJAX component: VFS Tre
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @package Wombat
 */

WBClass::load('WBAjax'
    , 'WBLog');

/**
 * AJAX component: VFS Tre
 *
 * @version 0.3.0
 * @package Wombat
 */
class WBAjax_VFS_Tree extends WBAjax
{
    const VFS_SELECT_DIR_LAST   =   'vfsdir_select_dir_last';
    const VFS_USER              =   'vfsfile_user';

    /**
     * File Table Access
     * @var WBLog
     */
    private $log;

    /**
     * File Table Access
     * @var WBDatasource_Tree
     */
    private $dirtree;


    /**
     * second constructor
     *
     * This protect the actual constructor.
     */
    protected function init()
    {
        // empty default implementation
        $this->log          =   WBLog::start('VFSTree');

        if (!$this->sess->has(self::VFS_SELECT_DIR_LAST)) {
            $this->sess->set(self::VFS_SELECT_DIR_LAST, 0);
        }

        $user   =   $this->sess->get(self::VFS_USER);
        if (empty($user)) {
            $user   =   $this->user->getId();
        }

        // Tree member
        $this->dirtree      =   WBClass::create('WBDatasource_Tree', array("treetable" => "vfsdir"));
        $clause             =   array();
        $clause[]           =   array(
                                        'field' =>  $this->dirtree->getIdentifier('user'),
                                        'value' =>  $user
                                        );
        $this->dirtree->setClause($clause);
    }

    /**
     * create move view
     *
     * @return view to move a file
     */
    protected function select()
    {
        $type               =    $this->req->get('type');
        $from               =    $this->req->get('src');
        $vfsdid             =    $this->sess->get(self::VFS_SELECT_DIR_LAST);
        if (strcmp($type, 'file') == 0) {
            $from           =   $this->req->get('id');
        }
        else {
            $from           =   $this->req->get('id');
        }

        return $this->selectDisplay($type, $from, $vfsdid);
    }

    /**
     * create view to select target dir
     *
     * @return view to select target dir
     */
    protected function selectDes()
    {
        $type               =    $this->req->get('type');
        $from               =    $this->req->get('from');
        $vfsdid             =    $this->req->get('id', $this->sess->get(self::VFS_SELECT_DIR_LAST));

        $this->sess->set(self::VFS_SELECT_DIR_LAST, $vfsdid);

        return $this->selectDisplay($type, $from, $vfsdid);
    }

    /**
     * Actually Display
     *
     * @param string $type
     * @param string $from
     * @param string $vfsdid
     */
    private function selectDisplay($type, $from, $vfsdid)
    {
        if (0 == $vfsdid) {
            $vfsdid =   null;
        }

        $parents            =    $this->dirtree->getParent($vfsdid, 0);
        $list               =    $this->dirtree->getChildren($vfsdid);
        $cwd                =    $this->dirtree->get($vfsdid);

        $this->tmpl->addGlobalVar('from', $from);
        $this->tmpl->addGlobalVar('type', $type);
        $this->tmpl->addGlobalVar('cwd_parent_count', count($parents));
        $this->tmpl->addGlobalVar('list_count', count($list));
        $this->tmpl->addGlobalVars($cwd, 'cwd_');
        $this->tmpl->readTemplatesFromInput('VFS/ajax/tree/tree.tmpl');
        $this->tmpl->addRows('parent_list_entry', $parents);
        $this->tmpl->addRows('list_entry', $list);

        return $this->tmpl->getParsedTemplate('snippet');
    }
}